diff options
Diffstat (limited to 'libavfilter/vsrc_movie.c')
-rw-r--r-- | libavfilter/vsrc_movie.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/libavfilter/vsrc_movie.c b/libavfilter/vsrc_movie.c deleted file mode 100644 index 0e5df32..0000000 --- a/libavfilter/vsrc_movie.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * Copyright (c) 2010 Stefano Sabatini - * Copyright (c) 2008 Victor Paesa - * - * This file is part of Libav. - * - * Libav 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, - * 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 - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * movie video source - * - * @todo use direct rendering (no allocation of a new frame) - * @todo support a PTS correction mechanism - * @todo support more than one output stream - */ - -#include <float.h> -#include <stdint.h> - -#include "libavutil/attributes.h" -#include "libavutil/avstring.h" -#include "libavutil/opt.h" -#include "libavutil/imgutils.h" -#include "libavformat/avformat.h" -#include "avfilter.h" -#include "formats.h" -#include "internal.h" -#include "video.h" - -typedef struct MovieContext { - const AVClass *class; - int64_t seek_point; ///< seekpoint in microseconds - double seek_point_d; - char *format_name; - char *file_name; - int stream_index; - - AVFormatContext *format_ctx; - AVCodecContext *codec_ctx; - int is_done; - AVFrame *frame; ///< video frame to store the decoded images in - - int w, h; -} MovieContext; - -#define OFFSET(x) offsetof(MovieContext, x) -#define FLAGS AV_OPT_FLAG_VIDEO_PARAM - -static const AVOption movie_options[]= { - { "filename", NULL, OFFSET(file_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, - { "format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, - { "f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, - { "stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, - { "si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, - { "seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, - { "sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, - { NULL }, -}; - -static const char *movie_get_name(void *ctx) -{ - return "movie"; -} - -static const AVClass movie_class = { - "MovieContext", - movie_get_name, - movie_options -}; - -static av_cold int movie_init(AVFilterContext *ctx) -{ - MovieContext *movie = ctx->priv; - AVInputFormat *iformat = NULL; - AVCodec *codec; - int ret; - int64_t timestamp; - - av_register_all(); - - // Try to find the movie format (container) - iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL; - - movie->format_ctx = NULL; - if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, NULL)) < 0) { - av_log(ctx, AV_LOG_ERROR, - "Failed to avformat_open_input '%s'\n", movie->file_name); - return ret; - } - if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0) - av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n"); - - // if seeking requested, we execute it - if (movie->seek_point > 0) { - timestamp = movie->seek_point; - // add the stream start time, should it exist - if (movie->format_ctx->start_time != AV_NOPTS_VALUE) { - if (timestamp > INT64_MAX - movie->format_ctx->start_time) { - av_log(ctx, AV_LOG_ERROR, - "%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n", - movie->file_name, movie->format_ctx->start_time, movie->seek_point); - return AVERROR(EINVAL); - } - timestamp += movie->format_ctx->start_time; - } - if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) { - av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n", - movie->file_name, timestamp); - return ret; - } - } - - /* select the video stream */ - if ((ret = av_find_best_stream(movie->format_ctx, AVMEDIA_TYPE_VIDEO, - movie->stream_index, -1, NULL, 0)) < 0) { - av_log(ctx, AV_LOG_ERROR, "No video stream with index '%d' found\n", - movie->stream_index); - return ret; - } - movie->stream_index = ret; - movie->codec_ctx = movie->format_ctx->streams[movie->stream_index]->codec; - - /* - * So now we've got a pointer to the so-called codec context for our video - * stream, but we still have to find the actual codec and open it. - */ - codec = avcodec_find_decoder(movie->codec_ctx->codec_id); - if (!codec) { - av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n"); - return AVERROR(EINVAL); - } - - movie->codec_ctx->refcounted_frames = 1; - - if ((ret = avcodec_open2(movie->codec_ctx, codec, NULL)) < 0) { - av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n"); - return ret; - } - - movie->w = movie->codec_ctx->width; - movie->h = movie->codec_ctx->height; - - av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n", - movie->seek_point, movie->format_name, movie->file_name, - movie->stream_index); - - return 0; -} - -static av_cold int init(AVFilterContext *ctx) -{ - MovieContext *movie = ctx->priv; - - movie->seek_point = movie->seek_point_d * 1000000 + 0.5; - - return movie_init(ctx); -} - -static av_cold void uninit(AVFilterContext *ctx) -{ - MovieContext *movie = ctx->priv; - - if (movie->codec_ctx) - avcodec_close(movie->codec_ctx); - if (movie->format_ctx) - avformat_close_input(&movie->format_ctx); - av_frame_free(&movie->frame); -} - -static int query_formats(AVFilterContext *ctx) -{ - MovieContext *movie = ctx->priv; - enum AVPixelFormat pix_fmts[] = { movie->codec_ctx->pix_fmt, AV_PIX_FMT_NONE }; - - ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); - return 0; -} - -static int config_output_props(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - - outlink->w = movie->w; - outlink->h = movie->h; - outlink->time_base = movie->format_ctx->streams[movie->stream_index]->time_base; - - return 0; -} - -static int movie_get_frame(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - AVPacket pkt; - int ret, frame_decoded; - - if (movie->is_done == 1) - return 0; - - movie->frame = av_frame_alloc(); - if (!movie->frame) - return AVERROR(ENOMEM); - - while ((ret = av_read_frame(movie->format_ctx, &pkt)) >= 0) { - // Is this a packet from the video stream? - if (pkt.stream_index == movie->stream_index) { - avcodec_decode_video2(movie->codec_ctx, movie->frame, &frame_decoded, &pkt); - - if (frame_decoded) { - if (movie->frame->pkt_pts != AV_NOPTS_VALUE) - movie->frame->pts = movie->frame->pkt_pts; - av_dlog(outlink->src, - "movie_get_frame(): file:'%s' pts:%"PRId64" time:%f aspect:%d/%d\n", - movie->file_name, movie->frame->pts, - (double)movie->frame->pts * - av_q2d(movie->format_ctx->streams[movie->stream_index]->time_base), - movie->frame->sample_aspect_ratio.num, - movie->frame->sample_aspect_ratio.den); - // We got it. Free the packet since we are returning - av_free_packet(&pkt); - - return 0; - } - } - // Free the packet that was allocated by av_read_frame - av_free_packet(&pkt); - } - - // On multi-frame source we should stop the mixing process when - // the movie source does not have more frames - if (ret == AVERROR_EOF) - movie->is_done = 1; - return ret; -} - -static int request_frame(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - int ret; - - if (movie->is_done) - return AVERROR_EOF; - if ((ret = movie_get_frame(outlink)) < 0) - return ret; - - ret = ff_filter_frame(outlink, movie->frame); - movie->frame = NULL; - - return ret; -} - -static const AVFilterPad avfilter_vsrc_movie_outputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .request_frame = request_frame, - .config_props = config_output_props, - }, - { NULL } -}; - -AVFilter ff_vsrc_movie = { - .name = "movie", - .description = NULL_IF_CONFIG_SMALL("Read from a movie source."), - .priv_size = sizeof(MovieContext), - .priv_class = &movie_class, - .init = init, - .uninit = uninit, - .query_formats = query_formats, - - .inputs = NULL, - .outputs = avfilter_vsrc_movie_outputs, -}; |