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Diffstat (limited to 'ffplay.c')
| -rw-r--r-- | ffplay.c | 3196 |
1 files changed, 3196 insertions, 0 deletions
diff --git a/ffplay.c b/ffplay.c new file mode 100644 index 0000000..2a07be1 --- /dev/null +++ b/ffplay.c @@ -0,0 +1,3196 @@ +/* + * Copyright (c) 2003 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * simple media player based on the FFmpeg libraries + */ + +#include "config.h" +#include <inttypes.h> +#include <math.h> +#include <limits.h> +#include <signal.h> +#include "libavutil/avstring.h" +#include "libavutil/colorspace.h" +#include "libavutil/mathematics.h" +#include "libavutil/pixdesc.h" +#include "libavutil/imgutils.h" +#include "libavutil/dict.h" +#include "libavutil/parseutils.h" +#include "libavutil/samplefmt.h" +#include "libavutil/avassert.h" +#include "libavutil/time.h" +#include "libavformat/avformat.h" +#include "libavdevice/avdevice.h" +#include "libswscale/swscale.h" +#include "libavutil/opt.h" +#include "libavcodec/avfft.h" +#include "libswresample/swresample.h" + +#if CONFIG_AVFILTER +# include "libavfilter/avcodec.h" +# include "libavfilter/avfilter.h" +# include "libavfilter/avfiltergraph.h" +# include "libavfilter/buffersink.h" +# include "libavfilter/buffersrc.h" +#endif + +#include <SDL.h> +#include <SDL_thread.h> + +#include "cmdutils.h" + +#include <assert.h> + +const char program_name[] = "ffplay"; +const int program_birth_year = 2003; + +#define MAX_QUEUE_SIZE (15 * 1024 * 1024) +#define MIN_FRAMES 5 + +/* SDL audio buffer size, in samples. Should be small to have precise + A/V sync as SDL does not have hardware buffer fullness info. */ +#define SDL_AUDIO_BUFFER_SIZE 1024 + +/* no AV sync correction is done if below the AV sync threshold */ +#define AV_SYNC_THRESHOLD 0.01 +/* no AV correction is done if too big error */ +#define AV_NOSYNC_THRESHOLD 10.0 + +/* maximum audio speed change to get correct sync */ +#define SAMPLE_CORRECTION_PERCENT_MAX 10 + +/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */ +#define AUDIO_DIFF_AVG_NB 20 + +/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */ +#define SAMPLE_ARRAY_SIZE (2 * 65536) + +static int sws_flags = SWS_BICUBIC; + +typedef struct PacketQueue { + AVPacketList *first_pkt, *last_pkt; + int nb_packets; + int size; + int abort_request; + SDL_mutex *mutex; + SDL_cond *cond; +} PacketQueue; + +#define VIDEO_PICTURE_QUEUE_SIZE 3 +#define SUBPICTURE_QUEUE_SIZE 4 + +typedef struct VideoPicture { + double pts; ///< presentation time stamp for this picture + int64_t pos; ///< byte position in file + int skip; + SDL_Overlay *bmp; + int width, height; /* source height & width */ + AVRational sample_aspect_ratio; + int allocated; + int reallocate; + +#if CONFIG_AVFILTER + AVFilterBufferRef *picref; +#endif +} VideoPicture; + +typedef struct SubPicture { + double pts; /* presentation time stamp for this picture */ + AVSubtitle sub; +} SubPicture; + +typedef struct AudioParams { + int freq; + int channels; + int channel_layout; + enum AVSampleFormat fmt; +} AudioParams; + +enum { + AV_SYNC_AUDIO_MASTER, /* default choice */ + AV_SYNC_VIDEO_MASTER, + AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */ +}; + +typedef struct VideoState { + SDL_Thread *read_tid; + SDL_Thread *video_tid; + SDL_Thread *refresh_tid; + AVInputFormat *iformat; + int no_background; + int abort_request; + int force_refresh; + int paused; + int last_paused; + int que_attachments_req; + int seek_req; + int seek_flags; + int64_t seek_pos; + int64_t seek_rel; + int read_pause_return; + AVFormatContext *ic; + + int audio_stream; + + int av_sync_type; + double external_clock; /* external clock base */ + int64_t external_clock_time; + + double audio_clock; + double audio_diff_cum; /* used for AV difference average computation */ + double audio_diff_avg_coef; + double audio_diff_threshold; + int audio_diff_avg_count; + AVStream *audio_st; + PacketQueue audioq; + int audio_hw_buf_size; + DECLARE_ALIGNED(16,uint8_t,audio_buf2)[AVCODEC_MAX_AUDIO_FRAME_SIZE * 4]; + uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE]; + uint8_t *audio_buf; + uint8_t *audio_buf1; + unsigned int audio_buf_size; /* in bytes */ + int audio_buf_index; /* in bytes */ + int audio_write_buf_size; + AVPacket audio_pkt_temp; + AVPacket audio_pkt; + struct AudioParams audio_src; + struct AudioParams audio_tgt; + struct SwrContext *swr_ctx; + double audio_current_pts; + double audio_current_pts_drift; + int frame_drops_early; + int frame_drops_late; + AVFrame *frame; + + enum ShowMode { + SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB + } show_mode; + int16_t sample_array[SAMPLE_ARRAY_SIZE]; + int sample_array_index; + int last_i_start; + RDFTContext *rdft; + int rdft_bits; + FFTSample *rdft_data; + int xpos; + + SDL_Thread *subtitle_tid; + int subtitle_stream; + int subtitle_stream_changed; + AVStream *subtitle_st; + PacketQueue subtitleq; + SubPicture subpq[SUBPICTURE_QUEUE_SIZE]; + int subpq_size, subpq_rindex, subpq_windex; + SDL_mutex *subpq_mutex; + SDL_cond *subpq_cond; + + double frame_timer; + double frame_last_pts; + double frame_last_duration; + double frame_last_dropped_pts; + double frame_last_returned_time; + double frame_last_filter_delay; + int64_t frame_last_dropped_pos; + double video_clock; ///< pts of last decoded frame / predicted pts of next decoded frame + int video_stream; + AVStream *video_st; + PacketQueue videoq; + double video_current_pts; ///< current displayed pts (different from video_clock if frame fifos are used) + double video_current_pts_drift; ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts + int64_t video_current_pos; ///< current displayed file pos + VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE]; + int pictq_size, pictq_rindex, pictq_windex; + SDL_mutex *pictq_mutex; + SDL_cond *pictq_cond; +#if !CONFIG_AVFILTER + struct SwsContext *img_convert_ctx; +#endif + + char filename[1024]; + int width, height, xleft, ytop; + int step; + +#if CONFIG_AVFILTER + AVFilterContext *in_video_filter; ///< the first filter in the video chain + AVFilterContext *out_video_filter; ///< the last filter in the video chain + int use_dr1; + FrameBuffer *buffer_pool; +#endif + + int refresh; + int last_video_stream, last_audio_stream, last_subtitle_stream; + + SDL_cond *continue_read_thread; +} VideoState; + +typedef struct AllocEventProps { + VideoState *is; + AVFrame *frame; +} AllocEventProps; + +/* options specified by the user */ +static AVInputFormat *file_iformat; +static const char *input_filename; +static const char *window_title; +static int fs_screen_width; +static int fs_screen_height; +static int screen_width = 0; +static int screen_height = 0; +static int audio_disable; +static int video_disable; +static int wanted_stream[AVMEDIA_TYPE_NB] = { + [AVMEDIA_TYPE_AUDIO] = -1, + [AVMEDIA_TYPE_VIDEO] = -1, + [AVMEDIA_TYPE_SUBTITLE] = -1, +}; +static int seek_by_bytes = -1; +static int display_disable; +static int show_status = 1; +static int av_sync_type = AV_SYNC_AUDIO_MASTER; +static int64_t start_time = AV_NOPTS_VALUE; +static int64_t duration = AV_NOPTS_VALUE; +static int workaround_bugs = 1; +static int fast = 0; +static int genpts = 0; +static int lowres = 0; +static int idct = FF_IDCT_AUTO; +static enum AVDiscard skip_frame = AVDISCARD_DEFAULT; +static enum AVDiscard skip_idct = AVDISCARD_DEFAULT; +static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT; +static int error_concealment = 3; +static int decoder_reorder_pts = -1; +static int autoexit; +static int exit_on_keydown; +static int exit_on_mousedown; +static int loop = 1; +static int framedrop = -1; +static int infinite_buffer = 0; +static enum ShowMode show_mode = SHOW_MODE_NONE; +static const char *audio_codec_name; +static const char *subtitle_codec_name; +static const char *video_codec_name; +static int rdftspeed = 20; +#if CONFIG_AVFILTER +static char *vfilters = NULL; +#endif + +/* current context */ +static int is_full_screen; +static int64_t audio_callback_time; + +static AVPacket flush_pkt; + +#define FF_ALLOC_EVENT (SDL_USEREVENT) +#define FF_REFRESH_EVENT (SDL_USEREVENT + 1) +#define FF_QUIT_EVENT (SDL_USEREVENT + 2) + +static SDL_Surface *screen; + +void av_noreturn exit_program(int ret) +{ + exit(ret); +} + +static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt) +{ + AVPacketList *pkt1; + + if (q->abort_request) + return -1; + + pkt1 = av_malloc(sizeof(AVPacketList)); + if (!pkt1) + return -1; + pkt1->pkt = *pkt; + pkt1->next = NULL; + + if (!q->last_pkt) + q->first_pkt = pkt1; + else + q->last_pkt->next = pkt1; + q->last_pkt = pkt1; + q->nb_packets++; + q->size += pkt1->pkt.size + sizeof(*pkt1); + /* XXX: should duplicate packet data in DV case */ + SDL_CondSignal(q->cond); + return 0; +} + +static int packet_queue_put(PacketQueue *q, AVPacket *pkt) +{ + int ret; + + /* duplicate the packet */ + if (pkt != &flush_pkt && av_dup_packet(pkt) < 0) + return -1; + + SDL_LockMutex(q->mutex); + ret = packet_queue_put_private(q, pkt); + SDL_UnlockMutex(q->mutex); + + if (pkt != &flush_pkt && ret < 0) + av_free_packet(pkt); + + return ret; +} + +/* packet queue handling */ +static void packet_queue_init(PacketQueue *q) +{ + memset(q, 0, sizeof(PacketQueue)); + q->mutex = SDL_CreateMutex(); + q->cond = SDL_CreateCond(); + q->abort_request = 1; +} + +static void packet_queue_flush(PacketQueue *q) +{ + AVPacketList *pkt, *pkt1; + + SDL_LockMutex(q->mutex); + for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) { + pkt1 = pkt->next; + av_free_packet(&pkt->pkt); + av_freep(&pkt); + } + q->last_pkt = NULL; + q->first_pkt = NULL; + q->nb_packets = 0; + q->size = 0; + SDL_UnlockMutex(q->mutex); +} + +static void packet_queue_destroy(PacketQueue *q) +{ + packet_queue_flush(q); + SDL_DestroyMutex(q->mutex); + SDL_DestroyCond(q->cond); +} + +static void packet_queue_abort(PacketQueue *q) +{ + SDL_LockMutex(q->mutex); + + q->abort_request = 1; + + SDL_CondSignal(q->cond); + + SDL_UnlockMutex(q->mutex); +} + +static void packet_queue_start(PacketQueue *q) +{ + SDL_LockMutex(q->mutex); + q->abort_request = 0; + packet_queue_put_private(q, &flush_pkt); + SDL_UnlockMutex(q->mutex); +} + +/* return < 0 if aborted, 0 if no packet and > 0 if packet. */ +static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block) +{ + AVPacketList *pkt1; + int ret; + + SDL_LockMutex(q->mutex); + + for (;;) { + if (q->abort_request) { + ret = -1; + break; + } + + pkt1 = q->first_pkt; + if (pkt1) { + q->first_pkt = pkt1->next; + if (!q->first_pkt) + q->last_pkt = NULL; + q->nb_packets--; + q->size -= pkt1->pkt.size + sizeof(*pkt1); + *pkt = pkt1->pkt; + av_free(pkt1); + ret = 1; + break; + } else if (!block) { + ret = 0; + break; + } else { + SDL_CondWait(q->cond, q->mutex); + } + } + SDL_UnlockMutex(q->mutex); + return ret; +} + +static inline void fill_rectangle(SDL_Surface *screen, + int x, int y, int w, int h, int color) +{ + SDL_Rect rect; + rect.x = x; + rect.y = y; + rect.w = w; + rect.h = h; + SDL_FillRect(screen, &rect, color); +} + +#define ALPHA_BLEND(a, oldp, newp, s)\ +((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s)) + +#define RGBA_IN(r, g, b, a, s)\ +{\ + unsigned int v = ((const uint32_t *)(s))[0];\ + a = (v >> 24) & 0xff;\ + r = (v >> 16) & 0xff;\ + g = (v >> 8) & 0xff;\ + b = v & 0xff;\ +} + +#define YUVA_IN(y, u, v, a, s, pal)\ +{\ + unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\ + a = (val >> 24) & 0xff;\ + y = (val >> 16) & 0xff;\ + u = (val >> 8) & 0xff;\ + v = val & 0xff;\ +} + +#define YUVA_OUT(d, y, u, v, a)\ +{\ + ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\ +} + + +#define BPP 1 + +static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh) +{ + int wrap, wrap3, width2, skip2; + int y, u, v, a, u1, v1, a1, w, h; + uint8_t *lum, *cb, *cr; + const uint8_t *p; + const uint32_t *pal; + int dstx, dsty, dstw, dsth; + + dstw = av_clip(rect->w, 0, imgw); + dsth = av_clip(rect->h, 0, imgh); + dstx = av_clip(rect->x, 0, imgw - dstw); + dsty = av_clip(rect->y, 0, imgh - dsth); + lum = dst->data[0] + dsty * dst->linesize[0]; + cb = dst->data[1] + (dsty >> 1) * dst->linesize[1]; + cr = dst->data[2] + (dsty >> 1) * dst->linesize[2]; + + width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1); + skip2 = dstx >> 1; + wrap = dst->linesize[0]; + wrap3 = rect->pict.linesize[0]; + p = rect->pict.data[0]; + pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */ + + if (dsty & 1) { + lum += dstx; + cb += skip2; + cr += skip2; + + if (dstx & 1) { + YUVA_IN(y, u, v, a, p, pal); + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0); + cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0); + cb++; + cr++; + lum++; + p += BPP; + } + for (w = dstw - (dstx & 1); w >= 2; w -= 2) { + YUVA_IN(y, u, v, a, p, pal); + u1 = u; + v1 = v; + a1 = a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + + YUVA_IN(y, u, v, a, p + BPP, pal); + u1 += u; + v1 += v; + a1 += a; + lum[1] = ALPHA_BLEND(a, lum[1], y, 0); + cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1); + cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1); + cb++; + cr++; + p += 2 * BPP; + lum += 2; + } + if (w) { + YUVA_IN(y, u, v, a, p, pal); + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0); + cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0); + p++; + lum++; + } + p += wrap3 - dstw * BPP; + lum += wrap - dstw - dstx; + cb += dst->linesize[1] - width2 - skip2; + cr += dst->linesize[2] - width2 - skip2; + } + for (h = dsth - (dsty & 1); h >= 2; h -= 2) { + lum += dstx; + cb += skip2; + cr += skip2; + + if (dstx & 1) { + YUVA_IN(y, u, v, a, p, pal); + u1 = u; + v1 = v; + a1 = a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + p += wrap3; + lum += wrap; + YUVA_IN(y, u, v, a, p, pal); + u1 += u; + v1 += v; + a1 += a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1); + cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1); + cb++; + cr++; + p += -wrap3 + BPP; + lum += -wrap + 1; + } + for (w = dstw - (dstx & 1); w >= 2; w -= 2) { + YUVA_IN(y, u, v, a, p, pal); + u1 = u; + v1 = v; + a1 = a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + + YUVA_IN(y, u, v, a, p + BPP, pal); + u1 += u; + v1 += v; + a1 += a; + lum[1] = ALPHA_BLEND(a, lum[1], y, 0); + p += wrap3; + lum += wrap; + + YUVA_IN(y, u, v, a, p, pal); + u1 += u; + v1 += v; + a1 += a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + + YUVA_IN(y, u, v, a, p + BPP, pal); + u1 += u; + v1 += v; + a1 += a; + lum[1] = ALPHA_BLEND(a, lum[1], y, 0); + + cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2); + cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2); + + cb++; + cr++; + p += -wrap3 + 2 * BPP; + lum += -wrap + 2; + } + if (w) { + YUVA_IN(y, u, v, a, p, pal); + u1 = u; + v1 = v; + a1 = a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + p += wrap3; + lum += wrap; + YUVA_IN(y, u, v, a, p, pal); + u1 += u; + v1 += v; + a1 += a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1); + cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1); + cb++; + cr++; + p += -wrap3 + BPP; + lum += -wrap + 1; + } + p += wrap3 + (wrap3 - dstw * BPP); + lum += wrap + (wrap - dstw - dstx); + cb += dst->linesize[1] - width2 - skip2; + cr += dst->linesize[2] - width2 - skip2; + } + /* handle odd height */ + if (h) { + lum += dstx; + cb += skip2; + cr += skip2; + + if (dstx & 1) { + YUVA_IN(y, u, v, a, p, pal); + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0); + cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0); + cb++; + cr++; + lum++; + p += BPP; + } + for (w = dstw - (dstx & 1); w >= 2; w -= 2) { + YUVA_IN(y, u, v, a, p, pal); + u1 = u; + v1 = v; + a1 = a; + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + + YUVA_IN(y, u, v, a, p + BPP, pal); + u1 += u; + v1 += v; + a1 += a; + lum[1] = ALPHA_BLEND(a, lum[1], y, 0); + cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1); + cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1); + cb++; + cr++; + p += 2 * BPP; + lum += 2; + } + if (w) { + YUVA_IN(y, u, v, a, p, pal); + lum[0] = ALPHA_BLEND(a, lum[0], y, 0); + cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0); + cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0); + } + } +} + +static void free_subpicture(SubPicture *sp) +{ + avsubtitle_free(&sp->sub); +} + +static void video_image_display(VideoState *is) +{ + VideoPicture *vp; + SubPicture *sp; + AVPicture pict; + float aspect_ratio; + int width, height, x, y; + SDL_Rect rect; + int i; + + vp = &is->pictq[is->pictq_rindex]; + if (vp->bmp) { + if (vp->sample_aspect_ratio.num == 0) + aspect_ratio = 0; + else + aspect_ratio = av_q2d(vp->sample_aspect_ratio); + + if (aspect_ratio <= 0.0) + aspect_ratio = 1.0; + aspect_ratio *= (float)vp->width / (float)vp->height; + + if (is->subtitle_st) { + if (is->subpq_size > 0) { + sp = &is->subpq[is->subpq_rindex]; + + if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) { + SDL_LockYUVOverlay (vp->bmp); + + pict.data[0] = vp->bmp->pixels[0]; + pict.data[1] = vp->bmp->pixels[2]; + pict.data[2] = vp->bmp->pixels[1]; + + pict.linesize[0] = vp->bmp->pitches[0]; + pict.linesize[1] = vp->bmp->pitches[2]; + pict.linesize[2] = vp->bmp->pitches[1]; + + for (i = 0; i < sp->sub.num_rects; i++) + blend_subrect(&pict, sp->sub.rects[i], + vp->bmp->w, vp->bmp->h); + + SDL_UnlockYUVOverlay (vp->bmp); + } + } + } + + + /* XXX: we suppose the screen has a 1.0 pixel ratio */ + height = is->height; + width = ((int)rint(height * aspect_ratio)) & ~1; + if (width > is->width) { + width = is->width; + height = ((int)rint(width / aspect_ratio)) & ~1; + } + x = (is->width - width) / 2; + y = (is->height - height) / 2; + is->no_background = 0; + rect.x = is->xleft + x; + rect.y = is->ytop + y; + rect.w = FFMAX(width, 1); + rect.h = FFMAX(height, 1); + SDL_DisplayYUVOverlay(vp->bmp, &rect); + } +} + +static inline int compute_mod(int a, int b) +{ + return a < 0 ? a%b + b : a%b; +} + +static void video_audio_display(VideoState *s) +{ + int i, i_start, x, y1, y, ys, delay, n, nb_display_channels; + int ch, channels, h, h2, bgcolor, fgcolor; + int16_t time_diff; + int rdft_bits, nb_freq; + + for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++) + ; + nb_freq = 1 << (rdft_bits - 1); + + /* compute display index : center on currently output samples */ + channels = s->audio_tgt.channels; + nb_display_channels = channels; + if (!s->paused) { + int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq); + n = 2 * channels; + delay = s->audio_write_buf_size; + delay /= n; + + /* to be more precise, we take into account the time spent since + the last buffer computation */ + if (audio_callback_time) { + time_diff = av_gettime() - audio_callback_time; + delay -= (time_diff * s->audio_tgt.freq) / 1000000; + } + + delay += 2 * data_used; + if (delay < data_used) + delay = data_used; + + i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE); + if (s->show_mode == SHOW_MODE_WAVES) { + h = INT_MIN; + for (i = 0; i < 1000; i += channels) { + int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE; + int a = s->sample_array[idx]; + int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE]; + int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE]; + int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE]; + int score = a - d; + if (h < score && (b ^ c) < 0) { + h = score; + i_start = idx; + } + } + } + + s->last_i_start = i_start; + } else { + i_start = s->last_i_start; + } + + bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00); + if (s->show_mode == SHOW_MODE_WAVES) { + fill_rectangle(screen, + s->xleft, s->ytop, s->width, s->height, + bgcolor); + + fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff); + + /* total height for one channel */ + h = s->height / nb_display_channels; + /* graph height / 2 */ + h2 = (h * 9) / 20; + for (ch = 0; ch < nb_display_channels; ch++) { + i = i_start + ch; + y1 = s->ytop + ch * h + (h / 2); /* position of center line */ + for (x = 0; x < s->width; x++) { + y = (s->sample_array[i] * h2) >> 15; + if (y < 0) { + y = -y; + ys = y1 - y; + } else { + ys = y1; + } + fill_rectangle(screen, + s->xleft + x, ys, 1, y, + fgcolor); + i += channels; + if (i >= SAMPLE_ARRAY_SIZE) + i -= SAMPLE_ARRAY_SIZE; + } + } + + fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff); + + for (ch = 1; ch < nb_display_channels; ch++) { + y = s->ytop + ch * h; + fill_rectangle(screen, + s->xleft, y, s->width, 1, + fgcolor); + } + SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height); + } else { + nb_display_channels= FFMIN(nb_display_channels, 2); + if (rdft_bits != s->rdft_bits) { + av_rdft_end(s->rdft); + av_free(s->rdft_data); + s->rdft = av_rdft_init(rdft_bits, DFT_R2C); + s->rdft_bits = rdft_bits; + s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data)); + } + { + FFTSample *data[2]; + for (ch = 0; ch < nb_display_channels; ch++) { + data[ch] = s->rdft_data + 2 * nb_freq * ch; + i = i_start + ch; + for (x = 0; x < 2 * nb_freq; x++) { + double w = (x-nb_freq) * (1.0 / nb_freq); + data[ch][x] = s->sample_array[i] * (1.0 - w * w); + i += channels; + if (i >= SAMPLE_ARRAY_SIZE) + i -= SAMPLE_ARRAY_SIZE; + } + av_rdft_calc(s->rdft, data[ch]); + } + // least efficient way to do this, we should of course directly access it but its more than fast enough + for (y = 0; y < s->height; y++) { + double w = 1 / sqrt(nb_freq); + int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1])); + int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0] + + data[1][2 * y + 1] * data[1][2 * y + 1])) : a; + a = FFMIN(a, 255); + b = FFMIN(b, 255); + fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2); + + fill_rectangle(screen, + s->xpos, s->height-y, 1, 1, + fgcolor); + } + } + SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height); + if (!s->paused) + s->xpos++; + if (s->xpos >= s->width) + s->xpos= s->xleft; + } +} + +static void stream_close(VideoState *is) +{ + VideoPicture *vp; + int i; + /* XXX: use a special url_shutdown call to abort parse cleanly */ + is->abort_request = 1; + SDL_WaitThread(is->read_tid, NULL); + SDL_WaitThread(is->refresh_tid, NULL); + packet_queue_destroy(&is->videoq); + packet_queue_destroy(&is->audioq); + packet_queue_destroy(&is->subtitleq); + + /* free all pictures */ + for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) { + vp = &is->pictq[i]; +#if CONFIG_AVFILTER + avfilter_unref_bufferp(&vp->picref); +#endif + if (vp->bmp) { + SDL_FreeYUVOverlay(vp->bmp); + vp->bmp = NULL; + } + } + SDL_DestroyMutex(is->pictq_mutex); + SDL_DestroyCond(is->pictq_cond); + SDL_DestroyMutex(is->subpq_mutex); + SDL_DestroyCond(is->subpq_cond); + SDL_DestroyCond(is->continue_read_thread); +#if !CONFIG_AVFILTER + if (is->img_convert_ctx) + sws_freeContext(is->img_convert_ctx); +#endif + av_free(is); +} + +static void do_exit(VideoState *is) +{ + if (is) { + stream_close(is); + } + av_lockmgr_register(NULL); + uninit_opts(); +#if CONFIG_AVFILTER + avfilter_uninit(); + av_freep(&vfilters); +#endif + avformat_network_deinit(); + if (show_status) + printf("\n"); + SDL_Quit(); + av_log(NULL, AV_LOG_QUIET, "%s", ""); + exit(0); +} + +static void sigterm_handler(int sig) +{ + exit(123); +} + +static int video_open(VideoState *is, int force_set_video_mode) +{ + int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL; + int w,h; + VideoPicture *vp = &is->pictq[is->pictq_rindex]; + + if (is_full_screen) flags |= SDL_FULLSCREEN; + else flags |= SDL_RESIZABLE; + + if (is_full_screen && fs_screen_width) { + w = fs_screen_width; + h = fs_screen_height; + } else if (!is_full_screen && screen_width) { + w = screen_width; + h = screen_height; + } else if (vp->width) { + w = vp->width; + h = vp->height; + } else { + w = 640; + h = 480; + } + if (screen && is->width == screen->w && screen->w == w + && is->height== screen->h && screen->h == h && !force_set_video_mode) + return 0; + screen = SDL_SetVideoMode(w, h, 0, flags); + if (!screen) { + fprintf(stderr, "SDL: could not set video mode - exiting\n"); + do_exit(is); + } + if (!window_title) + window_title = input_filename; + SDL_WM_SetCaption(window_title, window_title); + + is->width = screen->w; + is->height = screen->h; + + return 0; +} + +/* display the current picture, if any */ +static void video_display(VideoState *is) +{ + if (!screen) + video_open(is, 0); + if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO) + video_audio_display(is); + else if (is->video_st) + video_image_display(is); +} + +static int refresh_thread(void *opaque) +{ + VideoState *is= opaque; + while (!is->abort_request) { + SDL_Event event; + event.type = FF_REFRESH_EVENT; + event.user.data1 = opaque; + if (!is->refresh && (!is->paused || is->force_refresh)) { + is->refresh = 1; + SDL_PushEvent(&event); + } + //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly + av_usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000); + } + return 0; +} + +/* get the current audio clock value */ +static double get_audio_clock(VideoState *is) +{ + if (is->paused) { + return is->audio_current_pts; + } else { + return is->audio_current_pts_drift + av_gettime() / 1000000.0; + } +} + +/* get the current video clock value */ +static double get_video_clock(VideoState *is) +{ + if (is->paused) { + return is->video_current_pts; + } else { + return is->video_current_pts_drift + av_gettime() / 1000000.0; + } +} + +/* get the current external clock value */ +static double get_external_clock(VideoState *is) +{ + int64_t ti; + ti = av_gettime(); + return is->external_clock + ((ti - is->external_clock_time) * 1e-6); +} + +/* get the current master clock value */ +static double get_master_clock(VideoState *is) +{ + double val; + + if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) { + if (is->video_st) + val = get_video_clock(is); + else + val = get_audio_clock(is); + } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) { + if (is->audio_st) + val = get_audio_clock(is); + else + val = get_video_clock(is); + } else { + val = get_external_clock(is); + } + return val; +} + +/* seek in the stream */ +static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes) +{ + if (!is->seek_req) { + is->seek_pos = pos; + is->seek_rel = rel; + is->seek_flags &= ~AVSEEK_FLAG_BYTE; + if (seek_by_bytes) + is->seek_flags |= AVSEEK_FLAG_BYTE; + is->seek_req = 1; + } +} + +/* pause or resume the video */ +static void stream_toggle_pause(VideoState *is) +{ + if (is->paused) { + is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts; + if (is->read_pause_return != AVERROR(ENOSYS)) { + is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0; + } + is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0; + } + is->paused = !is->paused; +} + +static double compute_target_delay(double delay, VideoState *is) +{ + double sync_threshold, diff; + + /* update delay to follow master synchronisation source */ + if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || + is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) { + /* if video is slave, we try to correct big delays by + duplicating or deleting a frame */ + diff = get_video_clock(is) - get_master_clock(is); + + /* skip or repeat frame. We take into account the + delay to compute the threshold. I still don't know + if it is the best guess */ + sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay); + if (fabs(diff) < AV_NOSYNC_THRESHOLD) { + if (diff <= -sync_threshold) + delay = 0; + else if (diff >= sync_threshold) + delay = 2 * delay; + } + } + + av_dlog(NULL, "video: delay=%0.3f A-V=%f\n", + delay, -diff); + + return delay; +} + +static void pictq_next_picture(VideoState *is) { + /* update queue size and signal for next picture */ + if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE) + is->pictq_rindex = 0; + + SDL_LockMutex(is->pictq_mutex); + is->pictq_size--; + SDL_CondSignal(is->pictq_cond); + SDL_UnlockMutex(is->pictq_mutex); +} + +static void pictq_prev_picture(VideoState *is) { + VideoPicture *prevvp; + /* update queue size and signal for the previous picture */ + prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE]; + if (prevvp->allocated && !prevvp->skip) { + SDL_LockMutex(is->pictq_mutex); + if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) { + if (--is->pictq_rindex == -1) + is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1; + is->pictq_size++; + } + SDL_CondSignal(is->pictq_cond); + SDL_UnlockMutex(is->pictq_mutex); + } +} + +static void update_video_pts(VideoState *is, double pts, int64_t pos) { + double time = av_gettime() / 1000000.0; + /* update current video pts */ + is->video_current_pts = pts; + is->video_current_pts_drift = is->video_current_pts - time; + is->video_current_pos = pos; + is->frame_last_pts = pts; +} + +/* called to display each frame */ +static void video_refresh(void *opaque) +{ + VideoState *is = opaque; + VideoPicture *vp; + double time; + + SubPicture *sp, *sp2; + + if (is->video_st) { +retry: + if (is->pictq_size == 0) { + SDL_LockMutex(is->pictq_mutex); + if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) { + update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos); + is->frame_last_dropped_pts = AV_NOPTS_VALUE; + } + SDL_UnlockMutex(is->pictq_mutex); + // nothing to do, no picture to display in the que + } else { + double last_duration, duration, delay; + /* dequeue the picture */ + vp = &is->pictq[is->pictq_rindex]; + + if (vp->skip) { + pictq_next_picture(is); + goto retry; + } + + if (is->paused) + goto display; + + /* compute nominal last_duration */ + last_duration = vp->pts - is->frame_last_pts; + if (last_duration > 0 && last_duration < 10.0) { + /* if duration of the last frame was sane, update last_duration in video state */ + is->frame_last_duration = last_duration; + } + delay = compute_target_delay(is->frame_last_duration, is); + + time= av_gettime()/1000000.0; + if (time < is->frame_timer + delay) + return; + + if (delay > 0) + is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay)); + + SDL_LockMutex(is->pictq_mutex); + update_video_pts(is, vp->pts, vp->pos); + SDL_UnlockMutex(is->pictq_mutex); + + if (is->pictq_size > 1) { + VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE]; + duration = nextvp->pts - vp->pts; + if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){ + is->frame_drops_late++; + pictq_next_picture(is); + goto retry; + } + } + + if (is->subtitle_st) { + if (is->subtitle_stream_changed) { + SDL_LockMutex(is->subpq_mutex); + + while (is->subpq_size) { + free_subpicture(&is->subpq[is->subpq_rindex]); + + /* update queue size and signal for next picture */ + if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE) + is->subpq_rindex = 0; + + is->subpq_size--; + } + is->subtitle_stream_changed = 0; + + SDL_CondSignal(is->subpq_cond); + SDL_UnlockMutex(is->subpq_mutex); + } else { + if (is->subpq_size > 0) { + sp = &is->subpq[is->subpq_rindex]; + + if (is->subpq_size > 1) + sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE]; + else + sp2 = NULL; + + if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000))) + || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000)))) + { + free_subpicture(sp); + + /* update queue size and signal for next picture */ + if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE) + is->subpq_rindex = 0; + + SDL_LockMutex(is->subpq_mutex); + is->subpq_size--; + SDL_CondSignal(is->subpq_cond); + SDL_UnlockMutex(is->subpq_mutex); + } + } + } + } + +display: + /* display picture */ + if (!display_disable) + video_display(is); + + pictq_next_picture(is); + } + } else if (is->audio_st) { + /* draw the next audio frame */ + + /* if only audio stream, then display the audio bars (better + than nothing, just to test the implementation */ + + /* display picture */ + if (!display_disable) + video_display(is); + } + is->force_refresh = 0; + if (show_status) { + static int64_t last_time; + int64_t cur_time; + int aqsize, vqsize, sqsize; + double av_diff; + + cur_time = av_gettime(); + if (!last_time || (cur_time - last_time) >= 30000) { + aqsize = 0; + vqsize = 0; + sqsize = 0; + if (is->audio_st) + aqsize = is->audioq.size; + if (is->video_st) + vqsize = is->videoq.size; + if (is->subtitle_st) + sqsize = is->subtitleq.size; + av_diff = 0; + if (is->audio_st && is->video_st) + av_diff = get_audio_clock(is) - get_video_clock(is); + printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r", + get_master_clock(is), + av_diff, + is->frame_drops_early + is->frame_drops_late, + aqsize / 1024, + vqsize / 1024, + sqsize, + is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0, + is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0); + fflush(stdout); + last_time = cur_time; + } + } +} + +/* allocate a picture (needs to do that in main thread to avoid + potential locking problems */ +static void alloc_picture(AllocEventProps *event_props) +{ + VideoState *is = event_props->is; + AVFrame *frame = event_props->frame; + VideoPicture *vp; + + vp = &is->pictq[is->pictq_windex]; + + if (vp->bmp) + SDL_FreeYUVOverlay(vp->bmp); + +#if CONFIG_AVFILTER + avfilter_unref_bufferp(&vp->picref); +#endif + + vp->width = frame->width; + vp->height = frame->height; + + video_open(event_props->is, 0); + + vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height, + SDL_YV12_OVERLAY, + screen); + if (!vp->bmp || vp->bmp->pitches[0] < vp->width) { + /* SDL allocates a buffer smaller than requested if the video + * overlay hardware is unable to support the requested size. */ + fprintf(stderr, "Error: the video system does not support an image\n" + "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n" + "to reduce the image size.\n", vp->width, vp->height ); + do_exit(is); + } + + SDL_LockMutex(is->pictq_mutex); + vp->allocated = 1; + SDL_CondSignal(is->pictq_cond); + SDL_UnlockMutex(is->pictq_mutex); +} + +static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos) +{ + VideoPicture *vp; + double frame_delay, pts = pts1; + + /* compute the exact PTS for the picture if it is omitted in the stream + * pts1 is the dts of the pkt / pts of the frame */ + if (pts != 0) { + /* update video clock with pts, if present */ + is->video_clock = pts; + } else { + pts = is->video_clock; + } + /* update video clock for next frame */ + frame_delay = av_q2d(is->video_st->codec->time_base); + /* for MPEG2, the frame can be repeated, so we update the + clock accordingly */ + frame_delay += src_frame->repeat_pict * (frame_delay * 0.5); + is->video_clock += frame_delay; + +#if defined(DEBUG_SYNC) && 0 + printf("frame_type=%c clock=%0.3f pts=%0.3f\n", + av_get_picture_type_char(src_frame->pict_type), pts, pts1); +#endif + + /* wait until we have space to put a new picture */ + SDL_LockMutex(is->pictq_mutex); + + /* keep the last already displayed picture in the queue */ + while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 && + !is->videoq.abort_request) { + SDL_CondWait(is->pictq_cond, is->pictq_mutex); + } + SDL_UnlockMutex(is->pictq_mutex); + + if (is->videoq.abort_request) + return -1; + + vp = &is->pictq[is->pictq_windex]; + + /* alloc or resize hardware picture buffer */ + if (!vp->bmp || vp->reallocate || + vp->width != src_frame->width || + vp->height != src_frame->height) { + SDL_Event event; + AllocEventProps event_props; + + event_props.frame = src_frame; + event_props.is = is; + + vp->allocated = 0; + vp->reallocate = 0; + + /* the allocation must be done in the main thread to avoid + locking problems. We wait in this block for the event to complete, + so we can pass a pointer to event_props to it. */ + event.type = FF_ALLOC_EVENT; + event.user.data1 = &event_props; + SDL_PushEvent(&event); + + /* wait until the picture is allocated */ + SDL_LockMutex(is->pictq_mutex); + while (!vp->allocated && !is->videoq.abort_request) { + SDL_CondWait(is->pictq_cond, is->pictq_mutex); + } + /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */ + if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) { + while (!vp->allocated) { + SDL_CondWait(is->pictq_cond, is->pictq_mutex); + } + } + SDL_UnlockMutex(is->pictq_mutex); + + if (is->videoq.abort_request) + return -1; + } + + /* if the frame is not skipped, then display it */ + if (vp->bmp) { + AVPicture pict = { { 0 } }; +#if CONFIG_AVFILTER + avfilter_unref_bufferp(&vp->picref); + vp->picref = src_frame->opaque; +#endif + + /* get a pointer on the bitmap */ + SDL_LockYUVOverlay (vp->bmp); + + pict.data[0] = vp->bmp->pixels[0]; + pict.data[1] = vp->bmp->pixels[2]; + pict.data[2] = vp->bmp->pixels[1]; + + pict.linesize[0] = vp->bmp->pitches[0]; + pict.linesize[1] = vp->bmp->pitches[2]; + pict.linesize[2] = vp->bmp->pitches[1]; + +#if CONFIG_AVFILTER + // FIXME use direct rendering + av_picture_copy(&pict, (AVPicture *)src_frame, + src_frame->format, vp->width, vp->height); + vp->sample_aspect_ratio = vp->picref->video->sample_aspect_ratio; +#else + sws_flags = av_get_int(sws_opts, "sws_flags", NULL); + is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx, + vp->width, vp->height, src_frame->format, vp->width, vp->height, + PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL); + if (is->img_convert_ctx == NULL) { + fprintf(stderr, "Cannot initialize the conversion context\n"); + exit(1); + } + sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize, + 0, vp->height, pict.data, pict.linesize); + vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame); +#endif + /* update the bitmap content */ + SDL_UnlockYUVOverlay(vp->bmp); + + vp->pts = pts; + vp->pos = pos; + vp->skip = 0; + + /* now we can update the picture count */ + if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE) + is->pictq_windex = 0; + SDL_LockMutex(is->pictq_mutex); + is->pictq_size++; + SDL_UnlockMutex(is->pictq_mutex); + } + return 0; +} + +static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt) +{ + int got_picture, i; + + if (packet_queue_get(&is->videoq, pkt, 1) < 0) + return -1; + + if (pkt->data == flush_pkt.data) { + avcodec_flush_buffers(is->video_st->codec); + + SDL_LockMutex(is->pictq_mutex); + // Make sure there are no long delay timers (ideally we should just flush the que but thats harder) + for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) { + is->pictq[i].skip = 1; + } + while (is->pictq_size && !is->videoq.abort_request) { + SDL_CondWait(is->pictq_cond, is->pictq_mutex); + } + is->video_current_pos = -1; + is->frame_last_pts = AV_NOPTS_VALUE; + is->frame_last_duration = 0; + is->frame_timer = (double)av_gettime() / 1000000.0; + is->frame_last_dropped_pts = AV_NOPTS_VALUE; + SDL_UnlockMutex(is->pictq_mutex); + + return 0; + } + + if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0) + return 0; + + if (got_picture) { + int ret = 1; + + if (decoder_reorder_pts == -1) { + *pts = av_frame_get_best_effort_timestamp(frame); + } else if (decoder_reorder_pts) { + *pts = frame->pkt_pts; + } else { + *pts = frame->pkt_dts; + } + + if (*pts == AV_NOPTS_VALUE) { + *pts = 0; + } + + if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) && + (framedrop>0 || (framedrop && is->audio_st))) { + SDL_LockMutex(is->pictq_mutex); + if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) { + double clockdiff = get_video_clock(is) - get_master_clock(is); + double dpts = av_q2d(is->video_st->time_base) * *pts; + double ptsdiff = dpts - is->frame_last_pts; + if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD && + ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD && + clockdiff + ptsdiff - is->frame_last_filter_delay < 0) { + is->frame_last_dropped_pos = pkt->pos; + is->frame_last_dropped_pts = dpts; + is->frame_drops_early++; + ret = 0; + } + } + SDL_UnlockMutex(is->pictq_mutex); + } + + return ret; + } + return 0; +} + +#if CONFIG_AVFILTER +static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph, + AVFilterContext *source_ctx, AVFilterContext *sink_ctx) +{ + int ret; + AVFilterInOut *outputs = NULL, *inputs = NULL; + + if (filtergraph) { + outputs = avfilter_inout_alloc(); + inputs = avfilter_inout_alloc(); + if (!outputs || !inputs) { + ret = AVERROR(ENOMEM); + goto fail; + } + + outputs->name = av_strdup("in"); + outputs->filter_ctx = source_ctx; + outputs->pad_idx = 0; + outputs->next = NULL; + + inputs->name = av_strdup("out"); + inputs->filter_ctx = sink_ctx; + inputs->pad_idx = 0; + inputs->next = NULL; + + if ((ret = avfilter_graph_parse(graph, filtergraph, &inputs, &outputs, NULL)) < 0) + goto fail; + } else { + if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0) + goto fail; + } + + return avfilter_graph_config(graph, NULL); +fail: + avfilter_inout_free(&outputs); + avfilter_inout_free(&inputs); + return ret; +} + +static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters) +{ + static const enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE }; + char sws_flags_str[128]; + char buffersrc_args[256]; + int ret; + AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc(); + AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format, *filt_crop; + AVCodecContext *codec = is->video_st->codec; + + snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags); + graph->scale_sws_opts = av_strdup(sws_flags_str); + + snprintf(buffersrc_args, sizeof(buffersrc_args), + "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d", + codec->width, codec->height, codec->pix_fmt, + is->video_st->time_base.num, is->video_st->time_base.den, + codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den); + + if ((ret = avfilter_graph_create_filter(&filt_src, + avfilter_get_by_name("buffer"), + "ffplay_buffer", buffersrc_args, NULL, + graph)) < 0) + return ret; + + buffersink_params->pixel_fmts = pix_fmts; + ret = avfilter_graph_create_filter(&filt_out, + avfilter_get_by_name("ffbuffersink"), + "ffplay_buffersink", NULL, buffersink_params, graph); + av_freep(&buffersink_params); + if (ret < 0) + return ret; + + /* SDL YUV code is not handling odd width/height for some driver + * combinations, therefore we crop the picture to an even width/height. */ + if ((ret = avfilter_graph_create_filter(&filt_crop, + avfilter_get_by_name("crop"), + "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0) + return ret; + if ((ret = avfilter_graph_create_filter(&filt_format, + avfilter_get_by_name("format"), + "format", "yuv420p", NULL, graph)) < 0) + return ret; + if ((ret = avfilter_link(filt_crop, 0, filt_format, 0)) < 0) + return ret; + if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0) + return ret; + + if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0) + return ret; + + is->in_video_filter = filt_src; + is->out_video_filter = filt_out; + + return ret; +} + +#endif /* CONFIG_AVFILTER */ + +static int video_thread(void *arg) +{ + AVPacket pkt = { 0 }; + VideoState *is = arg; + AVFrame *frame = avcodec_alloc_frame(); + int64_t pts_int = AV_NOPTS_VALUE, pos = -1; + double pts; + int ret; + +#if CONFIG_AVFILTER + AVCodecContext *codec = is->video_st->codec; + AVFilterGraph *graph = avfilter_graph_alloc(); + AVFilterContext *filt_out = NULL, *filt_in = NULL; + int last_w = 0; + int last_h = 0; + enum PixelFormat last_format = -2; + + if (codec->codec->capabilities & CODEC_CAP_DR1) { + is->use_dr1 = 1; + codec->get_buffer = codec_get_buffer; + codec->release_buffer = codec_release_buffer; + codec->opaque = &is->buffer_pool; + } +#endif + + for (;;) { +#if CONFIG_AVFILTER + AVFilterBufferRef *picref; + AVRational tb; +#endif + while (is->paused && !is->videoq.abort_request) + SDL_Delay(10); + + avcodec_get_frame_defaults(frame); + av_free_packet(&pkt); + + ret = get_video_frame(is, frame, &pts_int, &pkt); + if (ret < 0) + goto the_end; + + if (!ret) + continue; + +#if CONFIG_AVFILTER + if ( last_w != is->video_st->codec->width + || last_h != is->video_st->codec->height + || last_format != is->video_st->codec->pix_fmt) { + av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n", + last_w, last_h, is->video_st->codec->width, is->video_st->codec->height); + avfilter_graph_free(&graph); + graph = avfilter_graph_alloc(); + if ((ret = configure_video_filters(graph, is, vfilters)) < 0) { + SDL_Event event; + event.type = FF_QUIT_EVENT; + event.user.data1 = is; + SDL_PushEvent(&event); + av_free_packet(&pkt); + goto the_end; + } + filt_in = is->in_video_filter; + filt_out = is->out_video_filter; + last_w = is->video_st->codec->width; + last_h = is->video_st->codec->height; + last_format = is->video_st->codec->pix_fmt; + } + + frame->pts = pts_int; + frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame); + if (is->use_dr1 && frame->opaque) { + FrameBuffer *buf = frame->opaque; + AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays( + frame->data, frame->linesize, + AV_PERM_READ | AV_PERM_PRESERVE, + frame->width, frame->height, + frame->format); + + avfilter_copy_frame_props(fb, frame); + fb->buf->priv = buf; + fb->buf->free = filter_release_buffer; + + buf->refcount++; + av_buffersrc_add_ref(filt_in, fb, AV_BUFFERSRC_FLAG_NO_COPY); + + } else + av_buffersrc_write_frame(filt_in, frame); + + av_free_packet(&pkt); + + while (ret >= 0) { + is->frame_last_returned_time = av_gettime() / 1000000.0; + + ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0); + if (ret < 0) { + ret = 0; + break; + } + + is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time; + if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0) + is->frame_last_filter_delay = 0; + + avfilter_copy_buf_props(frame, picref); + + pts_int = picref->pts; + tb = filt_out->inputs[0]->time_base; + pos = picref->pos; + frame->opaque = picref; + + if (av_cmp_q(tb, is->video_st->time_base)) { + av_unused int64_t pts1 = pts_int; + pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base); + av_dlog(NULL, "video_thread(): " + "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n", + tb.num, tb.den, pts1, + is->video_st->time_base.num, is->video_st->time_base.den, pts_int); + } + pts = pts_int * av_q2d(is->video_st->time_base); + ret = queue_picture(is, frame, pts, pos); + } +#else + pts = pts_int * av_q2d(is->video_st->time_base); + ret = queue_picture(is, frame, pts, pkt.pos); +#endif + + if (ret < 0) + goto the_end; + + if (is->step) + stream_toggle_pause(is); + } + the_end: + avcodec_flush_buffers(is->video_st->codec); +#if CONFIG_AVFILTER + avfilter_graph_free(&graph); +#endif + av_free_packet(&pkt); + av_free(frame); + return 0; +} + +static int subtitle_thread(void *arg) +{ + VideoState *is = arg; + SubPicture *sp; + AVPacket pkt1, *pkt = &pkt1; + int got_subtitle; + double pts; + int i, j; + int r, g, b, y, u, v, a; + + for (;;) { + while (is->paused && !is->subtitleq.abort_request) { + SDL_Delay(10); + } + if (packet_queue_get(&is->subtitleq, pkt, 1) < 0) + break; + + if (pkt->data == flush_pkt.data) { + avcodec_flush_buffers(is->subtitle_st->codec); + continue; + } + SDL_LockMutex(is->subpq_mutex); + while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE && + !is->subtitleq.abort_request) { + SDL_CondWait(is->subpq_cond, is->subpq_mutex); + } + SDL_UnlockMutex(is->subpq_mutex); + + if (is->subtitleq.abort_request) + return 0; + + sp = &is->subpq[is->subpq_windex]; + + /* NOTE: ipts is the PTS of the _first_ picture beginning in + this packet, if any */ + pts = 0; + if (pkt->pts != AV_NOPTS_VALUE) + pts = av_q2d(is->subtitle_st->time_base) * pkt->pts; + + avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub, + &got_subtitle, pkt); + + if (got_subtitle && sp->sub.format == 0) { + sp->pts = pts; + + for (i = 0; i < sp->sub.num_rects; i++) + { + for (j = 0; j < sp->sub.rects[i]->nb_colors; j++) + { + RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j); + y = RGB_TO_Y_CCIR(r, g, b); + u = RGB_TO_U_CCIR(r, g, b, 0); + v = RGB_TO_V_CCIR(r, g, b, 0); + YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a); + } + } + + /* now we can update the picture count */ + if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE) + is->subpq_windex = 0; + SDL_LockMutex(is->subpq_mutex); + is->subpq_size++; + SDL_UnlockMutex(is->subpq_mutex); + } + av_free_packet(pkt); + } + return 0; +} + +/* copy samples for viewing in editor window */ +static void update_sample_display(VideoState *is, short *samples, int samples_size) +{ + int size, len; + + size = samples_size / sizeof(short); + while (size > 0) { + len = SAMPLE_ARRAY_SIZE - is->sample_array_index; + if (len > size) + len = size; + memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short)); + samples += len; + is->sample_array_index += len; + if (is->sample_array_index >= SAMPLE_ARRAY_SIZE) + is->sample_array_index = 0; + size -= len; + } +} + +/* return the wanted number of samples to get better sync if sync_type is video + * or external master clock */ +static int synchronize_audio(VideoState *is, int nb_samples) +{ + int wanted_nb_samples = nb_samples; + + /* if not master, then we try to remove or add samples to correct the clock */ + if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) || + is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) { + double diff, avg_diff; + int min_nb_samples, max_nb_samples; + + diff = get_audio_clock(is) - get_master_clock(is); + + if (diff < AV_NOSYNC_THRESHOLD) { + is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum; + if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) { + /* not enough measures to have a correct estimate */ + is->audio_diff_avg_count++; + } else { + /* estimate the A-V difference */ + avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef); + + if (fabs(avg_diff) >= is->audio_diff_threshold) { + wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq); + min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100)); + max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100)); + wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples); + } + av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n", + diff, avg_diff, wanted_nb_samples - nb_samples, + is->audio_clock, is->video_clock, is->audio_diff_threshold); + } + } else { + /* too big difference : may be initial PTS errors, so + reset A-V filter */ + is->audio_diff_avg_count = 0; + is->audio_diff_cum = 0; + } + } + + return wanted_nb_samples; +} + +/* decode one audio frame and returns its uncompressed size */ +static int audio_decode_frame(VideoState *is, double *pts_ptr) +{ + AVPacket *pkt_temp = &is->audio_pkt_temp; + AVPacket *pkt = &is->audio_pkt; + AVCodecContext *dec = is->audio_st->codec; + int len1, len2, data_size, resampled_data_size; + int64_t dec_channel_layout; + int got_frame; + double pts; + int new_packet = 0; + int flush_complete = 0; + int wanted_nb_samples; + + for (;;) { + /* NOTE: the audio packet can contain several frames */ + while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) { + if (!is->frame) { + if (!(is->frame = avcodec_alloc_frame())) + return AVERROR(ENOMEM); + } else + avcodec_get_frame_defaults(is->frame); + + if (is->paused) + return -1; + + if (flush_complete) + break; + new_packet = 0; + len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp); + if (len1 < 0) { + /* if error, we skip the frame */ + pkt_temp->size = 0; + break; + } + + pkt_temp->data += len1; + pkt_temp->size -= len1; + + if (!got_frame) { + /* stop sending empty packets if the decoder is finished */ + if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY) + flush_complete = 1; + continue; + } + data_size = av_samples_get_buffer_size(NULL, dec->channels, + is->frame->nb_samples, + dec->sample_fmt, 1); + + dec_channel_layout = + (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ? + dec->channel_layout : av_get_default_channel_layout(dec->channels); + wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples); + + if (dec->sample_fmt != is->audio_src.fmt || + dec_channel_layout != is->audio_src.channel_layout || + dec->sample_rate != is->audio_src.freq || + (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) { + swr_free(&is->swr_ctx); + is->swr_ctx = swr_alloc_set_opts(NULL, + is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq, + dec_channel_layout, dec->sample_fmt, dec->sample_rate, + 0, NULL); + if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) { + fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n", + dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels, + is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels); + break; + } + is->audio_src.channel_layout = dec_channel_layout; + is->audio_src.channels = dec->channels; + is->audio_src.freq = dec->sample_rate; + is->audio_src.fmt = dec->sample_fmt; + } + + if (is->swr_ctx) { + const uint8_t **in = (const uint8_t **)is->frame->extended_data; + uint8_t *out[] = {is->audio_buf2}; + int out_count = sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt); + if (wanted_nb_samples != is->frame->nb_samples) { + if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate, + wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) { + fprintf(stderr, "swr_set_compensation() failed\n"); + break; + } + } + len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples); + if (len2 < 0) { + fprintf(stderr, "swr_convert() failed\n"); + break; + } + if (len2 == out_count) { + fprintf(stderr, "warning: audio buffer is probably too small\n"); + swr_init(is->swr_ctx); + } + is->audio_buf = is->audio_buf2; + resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt); + } else { + is->audio_buf = is->frame->data[0]; + resampled_data_size = data_size; + } + + /* if no pts, then compute it */ + pts = is->audio_clock; + *pts_ptr = pts; + is->audio_clock += (double)data_size / + (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt)); +#ifdef DEBUG + { + static double last_clock; + printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n", + is->audio_clock - last_clock, + is->audio_clock, pts); + last_clock = is->audio_clock; + } +#endif + return resampled_data_size; + } + + /* free the current packet */ + if (pkt->data) + av_free_packet(pkt); + memset(pkt_temp, 0, sizeof(*pkt_temp)); + + if (is->paused || is->audioq.abort_request) { + return -1; + } + + if (is->audioq.nb_packets == 0) + SDL_CondSignal(is->continue_read_thread); + + /* read next packet */ + if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0) + return -1; + + if (pkt->data == flush_pkt.data) { + avcodec_flush_buffers(dec); + flush_complete = 0; + } + + *pkt_temp = *pkt; + + /* if update the audio clock with the pts */ + if (pkt->pts != AV_NOPTS_VALUE) { + is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts; + } + } +} + +/* prepare a new audio buffer */ +static void sdl_audio_callback(void *opaque, Uint8 *stream, int len) +{ + VideoState *is = opaque; + int audio_size, len1; + int bytes_per_sec; + int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1); + double pts; + + audio_callback_time = av_gettime(); + + while (len > 0) { + if (is->audio_buf_index >= is->audio_buf_size) { + audio_size = audio_decode_frame(is, &pts); + if (audio_size < 0) { + /* if error, just output silence */ + is->audio_buf = is->silence_buf; + is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size; + } else { + if (is->show_mode != SHOW_MODE_VIDEO) + update_sample_display(is, (int16_t *)is->audio_buf, audio_size); + is->audio_buf_size = audio_size; + } + is->audio_buf_index = 0; + } + len1 = is->audio_buf_size - is->audio_buf_index; + if (len1 > len) + len1 = len; + memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1); + len -= len1; + stream += len1; + is->audio_buf_index += len1; + } + bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt); + is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index; + /* Let's assume the audio driver that is used by SDL has two periods. */ + is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec; + is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0; +} + +static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params) +{ + SDL_AudioSpec wanted_spec, spec; + const char *env; + const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6}; + + env = SDL_getenv("SDL_AUDIO_CHANNELS"); + if (env) { + wanted_nb_channels = atoi(env); + wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels); + } + if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) { + wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels); + wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX; + } + wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout); + wanted_spec.freq = wanted_sample_rate; + if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) { + fprintf(stderr, "Invalid sample rate or channel count!\n"); + return -1; + } + wanted_spec.format = AUDIO_S16SYS; + wanted_spec.silence = 0; + wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE; + wanted_spec.callback = sdl_audio_callback; + wanted_spec.userdata = opaque; + while (SDL_OpenAudio(&wanted_spec, &spec) < 0) { + fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError()); + wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)]; + if (!wanted_spec.channels) { + fprintf(stderr, "No more channel combinations to try, audio open failed\n"); + return -1; + } + wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels); + } + if (spec.format != AUDIO_S16SYS) { + fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format); + return -1; + } + if (spec.channels != wanted_spec.channels) { + wanted_channel_layout = av_get_default_channel_layout(spec.channels); + if (!wanted_channel_layout) { + fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels); + return -1; + } + } + + audio_hw_params->fmt = AV_SAMPLE_FMT_S16; + audio_hw_params->freq = spec.freq; + audio_hw_params->channel_layout = wanted_channel_layout; + audio_hw_params->channels = spec.channels; + return spec.size; +} + +/* open a given stream. Return 0 if OK */ +static int stream_component_open(VideoState *is, int stream_index) +{ + AVFormatContext *ic = is->ic; + AVCodecContext *avctx; + AVCodec *codec; + AVDictionary *opts; + AVDictionaryEntry *t = NULL; + + if (stream_index < 0 || stream_index >= ic->nb_streams) + return -1; + avctx = ic->streams[stream_index]->codec; + + codec = avcodec_find_decoder(avctx->codec_id); + opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec); + + switch(avctx->codec_type){ + case AVMEDIA_TYPE_AUDIO : is->last_audio_stream = stream_index; if(audio_codec_name ) codec= avcodec_find_decoder_by_name( audio_codec_name); break; + case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break; + case AVMEDIA_TYPE_VIDEO : is->last_video_stream = stream_index; if(video_codec_name ) codec= avcodec_find_decoder_by_name( video_codec_name); break; + } + if (!codec) + return -1; + + avctx->workaround_bugs = workaround_bugs; + avctx->lowres = lowres; + if(avctx->lowres > codec->max_lowres){ + av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n", + codec->max_lowres); + avctx->lowres= codec->max_lowres; + } + avctx->idct_algo = idct; + avctx->skip_frame = skip_frame; + avctx->skip_idct = skip_idct; + avctx->skip_loop_filter = skip_loop_filter; + avctx->error_concealment = error_concealment; + + if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE; + if (fast) avctx->flags2 |= CODEC_FLAG2_FAST; + if(codec->capabilities & CODEC_CAP_DR1) + avctx->flags |= CODEC_FLAG_EMU_EDGE; + + if (!av_dict_get(opts, "threads", NULL, 0)) + av_dict_set(&opts, "threads", "auto", 0); + if (!codec || + avcodec_open2(avctx, codec, &opts) < 0) + return -1; + if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) { + av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key); + return AVERROR_OPTION_NOT_FOUND; + } + + /* prepare audio output */ + if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { + int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src); + if (audio_hw_buf_size < 0) + return -1; + is->audio_hw_buf_size = audio_hw_buf_size; + is->audio_tgt = is->audio_src; + } + + ic->streams[stream_index]->discard = AVDISCARD_DEFAULT; + switch (avctx->codec_type) { + case AVMEDIA_TYPE_AUDIO: + is->audio_stream = stream_index; + is->audio_st = ic->streams[stream_index]; + is->audio_buf_size = 0; + is->audio_buf_index = 0; + + /* init averaging filter */ + is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB); + is->audio_diff_avg_count = 0; + /* since we do not have a precise anough audio fifo fullness, + we correct audio sync only if larger than this threshold */ + is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1); + + memset(&is->audio_pkt, 0, sizeof(is->audio_pkt)); + memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp)); + packet_queue_start(&is->audioq); + SDL_PauseAudio(0); + break; + case AVMEDIA_TYPE_VIDEO: + is->video_stream = stream_index; + is->video_st = ic->streams[stream_index]; + + packet_queue_start(&is->videoq); + is->video_tid = SDL_CreateThread(video_thread, is); + break; + case AVMEDIA_TYPE_SUBTITLE: + is->subtitle_stream = stream_index; + is->subtitle_st = ic->streams[stream_index]; + packet_queue_start(&is->subtitleq); + + is->subtitle_tid = SDL_CreateThread(subtitle_thread, is); + break; + default: + break; + } + return 0; +} + +static void stream_component_close(VideoState *is, int stream_index) +{ + AVFormatContext *ic = is->ic; + AVCodecContext *avctx; + + if (stream_index < 0 || stream_index >= ic->nb_streams) + return; + avctx = ic->streams[stream_index]->codec; + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_AUDIO: + packet_queue_abort(&is->audioq); + + SDL_CloseAudio(); + + packet_queue_flush(&is->audioq); + av_free_packet(&is->audio_pkt); + swr_free(&is->swr_ctx); + av_freep(&is->audio_buf1); + is->audio_buf = NULL; + av_freep(&is->frame); + + if (is->rdft) { + av_rdft_end(is->rdft); + av_freep(&is->rdft_data); + is->rdft = NULL; + is->rdft_bits = 0; + } + break; + case AVMEDIA_TYPE_VIDEO: + packet_queue_abort(&is->videoq); + + /* note: we also signal this mutex to make sure we deblock the + video thread in all cases */ + SDL_LockMutex(is->pictq_mutex); + SDL_CondSignal(is->pictq_cond); + SDL_UnlockMutex(is->pictq_mutex); + + SDL_WaitThread(is->video_tid, NULL); + + packet_queue_flush(&is->videoq); + break; + case AVMEDIA_TYPE_SUBTITLE: + packet_queue_abort(&is->subtitleq); + + /* note: we also signal this mutex to make sure we deblock the + video thread in all cases */ + SDL_LockMutex(is->subpq_mutex); + is->subtitle_stream_changed = 1; + + SDL_CondSignal(is->subpq_cond); + SDL_UnlockMutex(is->subpq_mutex); + + SDL_WaitThread(is->subtitle_tid, NULL); + + packet_queue_flush(&is->subtitleq); + break; + default: + break; + } + + ic->streams[stream_index]->discard = AVDISCARD_ALL; + avcodec_close(avctx); +#if CONFIG_AVFILTER + free_buffer_pool(&is->buffer_pool); +#endif + switch (avctx->codec_type) { + case AVMEDIA_TYPE_AUDIO: + is->audio_st = NULL; + is->audio_stream = -1; + break; + case AVMEDIA_TYPE_VIDEO: + is->video_st = NULL; + is->video_stream = -1; + break; + case AVMEDIA_TYPE_SUBTITLE: + is->subtitle_st = NULL; + is->subtitle_stream = -1; + break; + default: + break; + } +} + +static int decode_interrupt_cb(void *ctx) +{ + VideoState *is = ctx; + return is->abort_request; +} + +/* this thread gets the stream from the disk or the network */ +static int read_thread(void *arg) +{ + VideoState *is = arg; + AVFormatContext *ic = NULL; + int err, i, ret; + int st_index[AVMEDIA_TYPE_NB]; + AVPacket pkt1, *pkt = &pkt1; + int eof = 0; + int pkt_in_play_range = 0; + AVDictionaryEntry *t; + AVDictionary **opts; + int orig_nb_streams; + SDL_mutex *wait_mutex = SDL_CreateMutex(); + + memset(st_index, -1, sizeof(st_index)); + is->last_video_stream = is->video_stream = -1; + is->last_audio_stream = is->audio_stream = -1; + is->last_subtitle_stream = is->subtitle_stream = -1; + + ic = avformat_alloc_context(); + ic->interrupt_callback.callback = decode_interrupt_cb; + ic->interrupt_callback.opaque = is; + err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts); + if (err < 0) { + print_error(is->filename, err); + ret = -1; + goto fail; + } + if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) { + av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key); + ret = AVERROR_OPTION_NOT_FOUND; + goto fail; + } + is->ic = ic; + + if (genpts) + ic->flags |= AVFMT_FLAG_GENPTS; + + opts = setup_find_stream_info_opts(ic, codec_opts); + orig_nb_streams = ic->nb_streams; + + err = avformat_find_stream_info(ic, opts); + if (err < 0) { + fprintf(stderr, "%s: could not find codec parameters\n", is->filename); + ret = -1; + goto fail; + } + for (i = 0; i < orig_nb_streams; i++) + av_dict_free(&opts[i]); + av_freep(&opts); + + if (ic->pb) + ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end + + if (seek_by_bytes < 0) + seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT); + + /* if seeking requested, we execute it */ + if (start_time != AV_NOPTS_VALUE) { + int64_t timestamp; + + timestamp = start_time; + /* add the stream start time */ + if (ic->start_time != AV_NOPTS_VALUE) + timestamp += ic->start_time; + ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0); + if (ret < 0) { + fprintf(stderr, "%s: could not seek to position %0.3f\n", + is->filename, (double)timestamp / AV_TIME_BASE); + } + } + + for (i = 0; i < ic->nb_streams; i++) + ic->streams[i]->discard = AVDISCARD_ALL; + if (!video_disable) + st_index[AVMEDIA_TYPE_VIDEO] = + av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO, + wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0); + if (!audio_disable) + st_index[AVMEDIA_TYPE_AUDIO] = + av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO, + wanted_stream[AVMEDIA_TYPE_AUDIO], + st_index[AVMEDIA_TYPE_VIDEO], + NULL, 0); + if (!video_disable) + st_index[AVMEDIA_TYPE_SUBTITLE] = + av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE, + wanted_stream[AVMEDIA_TYPE_SUBTITLE], + (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ? + st_index[AVMEDIA_TYPE_AUDIO] : + st_index[AVMEDIA_TYPE_VIDEO]), + NULL, 0); + if (show_status) { + av_dump_format(ic, 0, is->filename, 0); + } + + is->show_mode = show_mode; + + /* open the streams */ + if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) { + stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]); + } + + ret = -1; + if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) { + ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]); + } + is->refresh_tid = SDL_CreateThread(refresh_thread, is); + if (is->show_mode == SHOW_MODE_NONE) + is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT; + + if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) { + stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]); + } + + if (is->video_stream < 0 && is->audio_stream < 0) { + fprintf(stderr, "%s: could not open codecs\n", is->filename); + ret = -1; + goto fail; + } + + for (;;) { + if (is->abort_request) + break; + if (is->paused != is->last_paused) { + is->last_paused = is->paused; + if (is->paused) + is->read_pause_return = av_read_pause(ic); + else + av_read_play(ic); + } +#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL + if (is->paused && + (!strcmp(ic->iformat->name, "rtsp") || + (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) { + /* wait 10 ms to avoid trying to get another packet */ + /* XXX: horrible */ + SDL_Delay(10); + continue; + } +#endif + if (is->seek_req) { + int64_t seek_target = is->seek_pos; + int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN; + int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX; +// FIXME the +-2 is due to rounding being not done in the correct direction in generation +// of the seek_pos/seek_rel variables + + ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags); + if (ret < 0) { + fprintf(stderr, "%s: error while seeking\n", is->ic->filename); + } else { + if (is->audio_stream >= 0) { + packet_queue_flush(&is->audioq); + packet_queue_put(&is->audioq, &flush_pkt); + } + if (is->subtitle_stream >= 0) { + packet_queue_flush(&is->subtitleq); + packet_queue_put(&is->subtitleq, &flush_pkt); + } + if (is->video_stream >= 0) { + packet_queue_flush(&is->videoq); + packet_queue_put(&is->videoq, &flush_pkt); + } + } + is->seek_req = 0; + eof = 0; + } + if (is->que_attachments_req) { + avformat_queue_attached_pictures(ic); + is->que_attachments_req = 0; + } + + /* if the queue are full, no need to read more */ + if (!infinite_buffer && + (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE + || ( (is->audioq .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request) + && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request) + && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) { + /* wait 10 ms */ + SDL_LockMutex(wait_mutex); + SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10); + SDL_UnlockMutex(wait_mutex); + continue; + } + if (eof) { + if (is->video_stream >= 0) { + av_init_packet(pkt); + pkt->data = NULL; + pkt->size = 0; + pkt->stream_index = is->video_stream; + packet_queue_put(&is->videoq, pkt); + } + if (is->audio_stream >= 0 && + is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) { + av_init_packet(pkt); + pkt->data = NULL; + pkt->size = 0; + pkt->stream_index = is->audio_stream; + packet_queue_put(&is->audioq, pkt); + } + SDL_Delay(10); + if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) { + if (loop != 1 && (!loop || --loop)) { + stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0); + } else if (autoexit) { + ret = AVERROR_EOF; + goto fail; + } + } + eof=0; + continue; + } + ret = av_read_frame(ic, pkt); + if (ret < 0) { + if (ret == AVERROR_EOF || url_feof(ic->pb)) + eof = 1; + if (ic->pb && ic->pb->error) + break; + SDL_Delay(100); /* wait for user event */ + continue; + } + /* check if packet is in play range specified by user, then queue, otherwise discard */ + pkt_in_play_range = duration == AV_NOPTS_VALUE || + (pkt->pts - ic->streams[pkt->stream_index]->start_time) * + av_q2d(ic->streams[pkt->stream_index]->time_base) - + (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000 + <= ((double)duration / 1000000); + if (pkt->stream_index == is->audio_stream && pkt_in_play_range) { + packet_queue_put(&is->audioq, pkt); + } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) { + packet_queue_put(&is->videoq, pkt); + } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) { + packet_queue_put(&is->subtitleq, pkt); + } else { + av_free_packet(pkt); + } + } + /* wait until the end */ + while (!is->abort_request) { + SDL_Delay(100); + } + + ret = 0; + fail: + /* close each stream */ + if (is->audio_stream >= 0) + stream_component_close(is, is->audio_stream); + if (is->video_stream >= 0) + stream_component_close(is, is->video_stream); + if (is->subtitle_stream >= 0) + stream_component_close(is, is->subtitle_stream); + if (is->ic) { + avformat_close_input(&is->ic); + } + + if (ret != 0) { + SDL_Event event; + + event.type = FF_QUIT_EVENT; + event.user.data1 = is; + SDL_PushEvent(&event); + } + SDL_DestroyMutex(wait_mutex); + return 0; +} + +static VideoState *stream_open(const char *filename, AVInputFormat *iformat) +{ + VideoState *is; + + is = av_mallocz(sizeof(VideoState)); + if (!is) + return NULL; + av_strlcpy(is->filename, filename, sizeof(is->filename)); + is->iformat = iformat; + is->ytop = 0; + is->xleft = 0; + + /* start video display */ + is->pictq_mutex = SDL_CreateMutex(); + is->pictq_cond = SDL_CreateCond(); + + is->subpq_mutex = SDL_CreateMutex(); + is->subpq_cond = SDL_CreateCond(); + + packet_queue_init(&is->videoq); + packet_queue_init(&is->audioq); + packet_queue_init(&is->subtitleq); + + is->continue_read_thread = SDL_CreateCond(); + + is->av_sync_type = av_sync_type; + is->read_tid = SDL_CreateThread(read_thread, is); + if (!is->read_tid) { + av_free(is); + return NULL; + } + return is; +} + +static void stream_cycle_channel(VideoState *is, int codec_type) +{ + AVFormatContext *ic = is->ic; + int start_index, stream_index; + int old_index; + AVStream *st; + + if (codec_type == AVMEDIA_TYPE_VIDEO) { + start_index = is->last_video_stream; + old_index = is->video_stream; + } else if (codec_type == AVMEDIA_TYPE_AUDIO) { + start_index = is->last_audio_stream; + old_index = is->audio_stream; + } else { + start_index = is->last_subtitle_stream; + old_index = is->subtitle_stream; + } + stream_index = start_index; + for (;;) { + if (++stream_index >= is->ic->nb_streams) + { + if (codec_type == AVMEDIA_TYPE_SUBTITLE) + { + stream_index = -1; + is->last_subtitle_stream = -1; + goto the_end; + } + if (start_index == -1) + return; + stream_index = 0; + } + if (stream_index == start_index) + return; + st = ic->streams[stream_index]; + if (st->codec->codec_type == codec_type) { + /* check that parameters are OK */ + switch (codec_type) { + case AVMEDIA_TYPE_AUDIO: + if (st->codec->sample_rate != 0 && + st->codec->channels != 0) + goto the_end; + break; + case AVMEDIA_TYPE_VIDEO: + case AVMEDIA_TYPE_SUBTITLE: + goto the_end; + default: + break; + } + } + } + the_end: + stream_component_close(is, old_index); + stream_component_open(is, stream_index); + if (codec_type == AVMEDIA_TYPE_VIDEO) + is->que_attachments_req = 1; +} + + +static void toggle_full_screen(VideoState *is) +{ +#if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14) + /* OS X needs to reallocate the SDL overlays */ + int i; + for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) + is->pictq[i].reallocate = 1; +#endif + is_full_screen = !is_full_screen; + video_open(is, 1); +} + +static void toggle_pause(VideoState *is) +{ + stream_toggle_pause(is); + is->step = 0; +} + +static void step_to_next_frame(VideoState *is) +{ + /* if the stream is paused unpause it, then step */ + if (is->paused) + stream_toggle_pause(is); + is->step = 1; +} + +static void toggle_audio_display(VideoState *is) +{ + int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00); + is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB; + fill_rectangle(screen, + is->xleft, is->ytop, is->width, is->height, + bgcolor); + SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height); +} + +/* handle an event sent by the GUI */ +static void event_loop(VideoState *cur_stream) +{ + SDL_Event event; + double incr, pos, frac; + + for (;;) { + double x; + SDL_WaitEvent(&event); + switch (event.type) { + case SDL_KEYDOWN: + if (exit_on_keydown) { + do_exit(cur_stream); + break; + } + switch (event.key.keysym.sym) { + case SDLK_ESCAPE: + case SDLK_q: + do_exit(cur_stream); + break; + case SDLK_f: + toggle_full_screen(cur_stream); + cur_stream->force_refresh = 1; + break; + case SDLK_p: + case SDLK_SPACE: + toggle_pause(cur_stream); + break; + case SDLK_s: // S: Step to next frame + step_to_next_frame(cur_stream); + break; + case SDLK_a: + stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO); + break; + case SDLK_v: + stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO); + break; + case SDLK_t: + stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE); + break; + case SDLK_w: + toggle_audio_display(cur_stream); + cur_stream->force_refresh = 1; + break; + case SDLK_PAGEUP: + incr = 600.0; + goto do_seek; + case SDLK_PAGEDOWN: + incr = -600.0; + goto do_seek; + case SDLK_LEFT: + incr = -10.0; + goto do_seek; + case SDLK_RIGHT: + incr = 10.0; + goto do_seek; + case SDLK_UP: + incr = 60.0; + goto do_seek; + case SDLK_DOWN: + incr = -60.0; + do_seek: + if (seek_by_bytes) { + if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) { + pos = cur_stream->video_current_pos; + } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) { + pos = cur_stream->audio_pkt.pos; + } else + pos = avio_tell(cur_stream->ic->pb); + if (cur_stream->ic->bit_rate) + incr *= cur_stream->ic->bit_rate / 8.0; + else + incr *= 180000.0; + pos += incr; + stream_seek(cur_stream, pos, incr, 1); + } else { + pos = get_master_clock(cur_stream); + pos += incr; + stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0); + } + break; + default: + break; + } + break; + case SDL_VIDEOEXPOSE: + cur_stream->force_refresh = 1; + break; + case SDL_MOUSEBUTTONDOWN: + if (exit_on_mousedown) { + do_exit(cur_stream); + break; + } + case SDL_MOUSEMOTION: + if (event.type == SDL_MOUSEBUTTONDOWN) { + x = event.button.x; + } else { + if (event.motion.state != SDL_PRESSED) + break; + x = event.motion.x; + } + if (seek_by_bytes || cur_stream->ic->duration <= 0) { + uint64_t size = avio_size(cur_stream->ic->pb); + stream_seek(cur_stream, size*x/cur_stream->width, 0, 1); + } else { + int64_t ts; + int ns, hh, mm, ss; + int tns, thh, tmm, tss; + tns = cur_stream->ic->duration / 1000000LL; + thh = tns / 3600; + tmm = (tns % 3600) / 60; + tss = (tns % 60); + frac = x / cur_stream->width; + ns = frac * tns; + hh = ns / 3600; + mm = (ns % 3600) / 60; + ss = (ns % 60); + fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100, + hh, mm, ss, thh, tmm, tss); + ts = frac * cur_stream->ic->duration; + if (cur_stream->ic->start_time != AV_NOPTS_VALUE) + ts += cur_stream->ic->start_time; + stream_seek(cur_stream, ts, 0, 0); + } + break; + case SDL_VIDEORESIZE: + screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0, + SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL); + screen_width = cur_stream->width = event.resize.w; + screen_height = cur_stream->height = event.resize.h; + cur_stream->force_refresh = 1; + break; + case SDL_QUIT: + case FF_QUIT_EVENT: + do_exit(cur_stream); + break; + case FF_ALLOC_EVENT: + alloc_picture(event.user.data1); + break; + case FF_REFRESH_EVENT: + if (cur_stream->force_refresh) + pictq_prev_picture(event.user.data1); + video_refresh(event.user.data1); + cur_stream->refresh = 0; + break; + default: + break; + } + } +} + +static int opt_frame_size(void *optctx, const char *opt, const char *arg) +{ + av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n"); + return opt_default(NULL, "video_size", arg); +} + +static int opt_width(void *optctx, const char *opt, const char *arg) +{ + screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX); + return 0; +} + +static int opt_height(void *optctx, const char *opt, const char *arg) +{ + screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX); + return 0; +} + +static int opt_format(void *optctx, const char *opt, const char *arg) +{ + file_iformat = av_find_input_format(arg); + if (!file_iformat) { + fprintf(stderr, "Unknown input format: %s\n", arg); + return AVERROR(EINVAL); + } + return 0; +} + +static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg) +{ + av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n"); + return opt_default(NULL, "pixel_format", arg); +} + +static int opt_sync(void *optctx, const char *opt, const char *arg) +{ + if (!strcmp(arg, "audio")) + av_sync_type = AV_SYNC_AUDIO_MASTER; + else if (!strcmp(arg, "video")) + av_sync_type = AV_SYNC_VIDEO_MASTER; + else if (!strcmp(arg, "ext")) + av_sync_type = AV_SYNC_EXTERNAL_CLOCK; + else { + fprintf(stderr, "Unknown value for %s: %s\n", opt, arg); + exit(1); + } + return 0; +} + +static int opt_seek(void *optctx, const char *opt, const char *arg) +{ + start_time = parse_time_or_die(opt, arg, 1); + return 0; +} + +static int opt_duration(void *optctx, const char *opt, const char *arg) +{ + duration = parse_time_or_die(opt, arg, 1); + return 0; +} + +static int opt_show_mode(void *optctx, const char *opt, const char *arg) +{ + show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO : + !strcmp(arg, "waves") ? SHOW_MODE_WAVES : + !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT : + parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1); + return 0; +} + +static void opt_input_file(void *optctx, const char *filename) +{ + if (input_filename) { + fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n", + filename, input_filename); + exit_program(1); + } + if (!strcmp(filename, "-")) + filename = "pipe:"; + input_filename = filename; +} + +static int opt_codec(void *o, const char *opt, const char *arg) +{ + switch(opt[strlen(opt)-1]){ + case 'a' : audio_codec_name = arg; break; + case 's' : subtitle_codec_name = arg; break; + case 'v' : video_codec_name = arg; break; + } + return 0; +} + +static int dummy; + +static const OptionDef options[] = { +#include "cmdutils_common_opts.h" + { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" }, + { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" }, + { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" }, + { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" }, + { "an", OPT_BOOL, { &audio_disable }, "disable audio" }, + { "vn", OPT_BOOL, { &video_disable }, "disable video" }, + { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" }, + { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" }, + { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" }, + { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" }, + { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" }, + { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" }, + { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" }, + { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" }, + { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" }, + { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" }, + { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" }, + { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" }, + { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" }, + { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""}, + { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" }, + { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" }, + { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" }, + { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" }, + { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" }, + { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" }, + { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" }, + { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" }, + { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" }, + { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" }, + { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" }, + { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" }, + { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" }, + { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" }, +#if CONFIG_AVFILTER + { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" }, +#endif + { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" }, + { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" }, + { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" }, + { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"}, + { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder" }, + { NULL, }, +}; + +static void show_usage(void) +{ + av_log(NULL, AV_LOG_INFO, "Simple media player\n"); + av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name); + av_log(NULL, AV_LOG_INFO, "\n"); +} + +void show_help_default(const char *opt, const char *arg) +{ + av_log_set_callback(log_callback_help); + show_usage(); + show_help_options(options, "Main options:", 0, OPT_EXPERT, 0); + show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0); + printf("\n"); + show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM); + show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM); +#if !CONFIG_AVFILTER + show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM); +#else + show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM); +#endif + printf("\nWhile playing:\n" + "q, ESC quit\n" + "f toggle full screen\n" + "p, SPC pause\n" + "a cycle audio channel\n" + "v cycle video channel\n" + "t cycle subtitle channel\n" + "w show audio waves\n" + "s activate frame-step mode\n" + "left/right seek backward/forward 10 seconds\n" + "down/up seek backward/forward 1 minute\n" + "page down/page up seek backward/forward 10 minutes\n" + "mouse click seek to percentage in file corresponding to fraction of width\n" + ); +} + +static int lockmgr(void **mtx, enum AVLockOp op) +{ + switch(op) { + case AV_LOCK_CREATE: + *mtx = SDL_CreateMutex(); + if(!*mtx) + return 1; + return 0; + case AV_LOCK_OBTAIN: + return !!SDL_LockMutex(*mtx); + case AV_LOCK_RELEASE: + return !!SDL_UnlockMutex(*mtx); + case AV_LOCK_DESTROY: + SDL_DestroyMutex(*mtx); + return 0; + } + return 1; +} + +/* Called from the main */ +int main(int argc, char **argv) +{ + int flags; + VideoState *is; + char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy"; + + av_log_set_flags(AV_LOG_SKIP_REPEATED); + parse_loglevel(argc, argv, options); + + /* register all codecs, demux and protocols */ + avcodec_register_all(); +#if CONFIG_AVDEVICE + avdevice_register_all(); +#endif +#if CONFIG_AVFILTER + avfilter_register_all(); +#endif + av_register_all(); + avformat_network_init(); + + init_opts(); + + signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */ + signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */ + + show_banner(argc, argv, options); + + parse_options(NULL, argc, argv, options, opt_input_file); + + if (!input_filename) { + show_usage(); + fprintf(stderr, "An input file must be specified\n"); + fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name); + exit(1); + } + + if (display_disable) { + video_disable = 1; + } + flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER; + if (audio_disable) + flags &= ~SDL_INIT_AUDIO; + if (display_disable) + SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */ +#if !defined(__MINGW32__) && !defined(__APPLE__) + flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */ +#endif + if (SDL_Init (flags)) { + fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError()); + fprintf(stderr, "(Did you set the DISPLAY variable?)\n"); + exit(1); + } + + if (!display_disable) { +#if HAVE_SDL_VIDEO_SIZE + const SDL_VideoInfo *vi = SDL_GetVideoInfo(); + fs_screen_width = vi->current_w; + fs_screen_height = vi->current_h; +#endif + } + + SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE); + SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE); + SDL_EventState(SDL_USEREVENT, SDL_IGNORE); + + if (av_lockmgr_register(lockmgr)) { + fprintf(stderr, "Could not initialize lock manager!\n"); + do_exit(NULL); + } + + av_init_packet(&flush_pkt); + flush_pkt.data = (char *)(intptr_t)"FLUSH"; + + is = stream_open(input_filename, file_iformat); + if (!is) { + fprintf(stderr, "Failed to initialize VideoState!\n"); + do_exit(NULL); + } + + event_loop(is); + + /* never returns */ + + return 0; +} |
