diff options
Diffstat (limited to 'libavfilter/video.c')
-rw-r--r-- | libavfilter/video.c | 169 |
1 files changed, 104 insertions, 65 deletions
diff --git a/libavfilter/video.c b/libavfilter/video.c index 4afce99..9ab8edb 100644 --- a/libavfilter/video.c +++ b/libavfilter/video.c @@ -1,24 +1,29 @@ /* - * This file is part of Libav. + * Copyright 2007 Bobby Bingham + * Copyright Stefano Sabatini <stefasab gmail com> + * Copyright Vitor Sessak <vitor1001 gmail com> * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <string.h> #include <stdio.h> +#include "libavutil/avassert.h" #include "libavutil/imgutils.h" #include "libavutil/mem.h" @@ -26,79 +31,68 @@ #include "internal.h" #include "video.h" -#ifdef DEBUG -static char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms) -{ - snprintf(buf, buf_size, "%s%s%s%s%s%s", - perms & AV_PERM_READ ? "r" : "", - perms & AV_PERM_WRITE ? "w" : "", - perms & AV_PERM_PRESERVE ? "p" : "", - perms & AV_PERM_REUSE ? "u" : "", - perms & AV_PERM_REUSE2 ? "U" : "", - perms & AV_PERM_NEG_LINESIZES ? "n" : ""); - return buf; -} -#endif - -static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end) -{ - av_unused char buf[16]; - av_dlog(ctx, - "ref[%p buf:%p refcount:%d perms:%s data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64, - ref, ref->buf, ref->buf->refcount, ff_get_ref_perms_string(buf, sizeof(buf), ref->perms), ref->data[0], - ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3], - ref->pts, ref->pos); - - if (ref->video) { - av_dlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c", - ref->video->pixel_aspect.num, ref->video->pixel_aspect.den, - ref->video->w, ref->video->h, - !ref->video->interlaced ? 'P' : /* Progressive */ - ref->video->top_field_first ? 'T' : 'B', /* Top / Bottom */ - ref->video->key_frame, - av_get_picture_type_char(ref->video->pict_type)); - } - if (ref->audio) { - av_dlog(ctx, " cl:%"PRId64"d n:%d r:%d p:%d", - ref->audio->channel_layout, - ref->audio->nb_samples, - ref->audio->sample_rate, - ref->audio->planar); - } - - av_dlog(ctx, "]%s", end ? "\n" : ""); -} - AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h) { return ff_get_video_buffer(link->dst->outputs[0], perms, w, h); } -/* TODO: set the buffer's priv member to a context structure for the whole - * filter chain. This will allow for a buffer pool instead of the constant - * alloc & free cycle currently implemented. */ AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h) { int linesize[4]; uint8_t *data[4]; + int i; AVFilterBufferRef *picref = NULL; + AVFilterPool *pool = link->pool; + int full_perms = AV_PERM_READ | AV_PERM_WRITE | AV_PERM_PRESERVE | + AV_PERM_REUSE | AV_PERM_REUSE2 | AV_PERM_ALIGN; + + av_assert1(!(perms & ~(full_perms | AV_PERM_NEG_LINESIZES))); + + if (pool) { + for (i = 0; i < POOL_SIZE; i++) { + picref = pool->pic[i]; + if (picref && picref->buf->format == link->format && picref->buf->w == w && picref->buf->h == h) { + AVFilterBuffer *pic = picref->buf; + pool->pic[i] = NULL; + pool->count--; + picref->video->w = w; + picref->video->h = h; + picref->perms = full_perms; + picref->format = link->format; + pic->refcount = 1; + memcpy(picref->data, pic->data, sizeof(picref->data)); + memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize)); + pool->refcount++; + return picref; + } + } + } else { + pool = link->pool = av_mallocz(sizeof(AVFilterPool)); + pool->refcount = 1; + } - // +2 is needed for swscaler, +16 to be SIMD-friendly - if (av_image_alloc(data, linesize, w, h, link->format, 16) < 0) + // align: +2 is needed for swscaler, +16 to be SIMD-friendly + if ((i = av_image_alloc(data, linesize, w, h, link->format, 32)) < 0) return NULL; picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize, - perms, w, h, link->format); + full_perms, w, h, link->format); if (!picref) { av_free(data[0]); return NULL; } + memset(data[0], 128, i); + + picref->buf->priv = pool; + picref->buf->free = NULL; + pool->refcount++; + return picref; } AVFilterBufferRef * -avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms, +avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const int linesize[4], int perms, int w, int h, enum PixelFormat format) { AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer)); @@ -147,8 +141,8 @@ AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int AVFilterBufferRef *ret = NULL; av_unused char buf[16]; - FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); - av_dlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h); + FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0); + ff_tlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h); if (link->dstpad->get_video_buffer) ret = link->dstpad->get_video_buffer(link, perms, w, h); @@ -159,7 +153,7 @@ AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int if (ret) ret->type = AVMEDIA_TYPE_VIDEO; - FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " returning "); ff_dlog_ref(NULL, ret, 1); + FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " returning "); ff_tlog_ref(NULL, ret, 1); return ret; } @@ -179,7 +173,7 @@ int ff_inplace_start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref) AVFilterBufferRef *outpicref = NULL, *for_next_filter; int ret = 0; - if ((inpicref->perms & AV_PERM_WRITE) && !(inpicref->perms & AV_PERM_PRESERVE)) { + if (inpicref->perms & AV_PERM_WRITE) { outpicref = avfilter_ref_buffer(inpicref, ~0); if (!outpicref) return AVERROR(ENOMEM); @@ -222,6 +216,8 @@ static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref) return AVERROR(ENOMEM); avfilter_copy_buffer_ref_props(outlink->out_buf, picref); + outlink->out_buf->video->w = outlink->w; + outlink->out_buf->video->h = outlink->h; buf_out = avfilter_ref_buffer(outlink->out_buf, ~0); if (!buf_out) return AVERROR(ENOMEM); @@ -236,6 +232,7 @@ static void clear_link(AVFilterLink *link) avfilter_unref_bufferp(&link->cur_buf); avfilter_unref_bufferp(&link->src_buf); avfilter_unref_bufferp(&link->out_buf); + link->cur_buf_copy = NULL; /* we do not own the reference */ } /* XXX: should we do the duplicating of the picture ref here, instead of @@ -243,14 +240,26 @@ static void clear_link(AVFilterLink *link) int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref) { int (*start_frame)(AVFilterLink *, AVFilterBufferRef *); + AVFilterPad *src = link->srcpad; AVFilterPad *dst = link->dstpad; - int ret, perms = picref->perms; + int ret, perms; + AVFilterCommand *cmd= link->dst->command_queue; + int64_t pts; - FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1); + FF_TPRINTF_START(NULL, start_frame); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " "); ff_tlog_ref(NULL, picref, 1); + + if (link->closed) { + avfilter_unref_buffer(picref); + return AVERROR_EOF; + } if (!(start_frame = dst->start_frame)) start_frame = default_start_frame; + av_assert1((picref->perms & src->min_perms) == src->min_perms); + picref->perms &= ~ src->rej_perms; + perms = picref->perms; + if (picref->linesize[0] < 0) perms |= AV_PERM_NEG_LINESIZES; /* prepare to copy the picture if it has insufficient permissions */ @@ -268,13 +277,33 @@ int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref) link->src_buf = picref; avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf); + + /* copy palette if required */ + if (av_pix_fmt_descriptors[link->format].flags & PIX_FMT_PAL) + memcpy(link->cur_buf->data[1], link->src_buf-> data[1], AVPALETTE_SIZE); } else link->cur_buf = picref; + link->cur_buf_copy = link->cur_buf; + + while(cmd && cmd->time <= picref->pts * av_q2d(link->time_base)){ + av_log(link->dst, AV_LOG_DEBUG, + "Processing command time:%f command:%s arg:%s\n", + cmd->time, cmd->command, cmd->arg); + avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags); + ff_command_queue_pop(link->dst); + cmd= link->dst->command_queue; + } + pts = link->cur_buf->pts; ret = start_frame(link, link->cur_buf); + ff_update_link_current_pts(link, pts); if (ret < 0) clear_link(link); + else + /* incoming buffers must not be freed in start frame, + because they can still be in use by the automatic copy mechanism */ + av_assert1(link->cur_buf_copy->buf->refcount > 0); return ret; } @@ -335,7 +364,7 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) int i, j, vsub, ret; int (*draw_slice)(AVFilterLink *, int, int, int); - FF_DPRINTF_START(NULL, draw_slice); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir); + FF_TPRINTF_START(NULL, draw_slice); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir); /* copy the slice if needed for permission reasons */ if (link->src_buf) { @@ -345,22 +374,22 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) if (link->src_buf->data[i]) { src[i] = link->src_buf-> data[i] + (y >> (i==1 || i==2 ? vsub : 0)) * link->src_buf-> linesize[i]; - dst[i] = link->cur_buf->data[i] + - (y >> (i==1 || i==2 ? vsub : 0)) * link->cur_buf->linesize[i]; + dst[i] = link->cur_buf_copy->data[i] + + (y >> (i==1 || i==2 ? vsub : 0)) * link->cur_buf_copy->linesize[i]; } else src[i] = dst[i] = NULL; } for (i = 0; i < 4; i++) { int planew = - av_image_get_linesize(link->format, link->cur_buf->video->w, i); + av_image_get_linesize(link->format, link->cur_buf_copy->video->w, i); if (!src[i]) continue; for (j = 0; j < h >> (i==1 || i==2 ? vsub : 0); j++) { memcpy(dst[i], src[i], planew); src[i] += link->src_buf->linesize[i]; - dst[i] += link->cur_buf->linesize[i]; + dst[i] += link->cur_buf_copy->linesize[i]; } } } @@ -370,5 +399,15 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) ret = draw_slice(link, y, h, slice_dir); if (ret < 0) clear_link(link); + else + /* incoming buffers must not be freed in start frame, + because they can still be in use by the automatic copy mechanism */ + av_assert1(link->cur_buf_copy->buf->refcount > 0); return ret; } + +int avfilter_default_end_frame(AVFilterLink *inlink) +{ + return default_end_frame(inlink); +} + |