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712 lines
24 KiB
712 lines
24 KiB
/* |
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* Copyright (c) 2010 Stefano Sabatini |
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* Copyright (c) 2008 Victor Paesa |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* movie video source |
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* |
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* @todo support a PTS correction mechanism |
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*/ |
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#include "config_components.h" |
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#include <stdint.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/mem.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/internal.h" |
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#include "libavcodec/avcodec.h" |
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#include "libavformat/avformat.h" |
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#include "audio.h" |
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#include "avfilter.h" |
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#include "filters.h" |
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#include "formats.h" |
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#include "video.h" |
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typedef struct MovieStream { |
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AVFilterLink *link; |
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AVStream *st; |
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AVCodecContext *codec_ctx; |
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int64_t discontinuity_threshold; |
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int64_t last_pts; |
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AVFrame *frame; |
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int eof; |
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} MovieStream; |
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typedef struct MovieContext { |
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/* common A/V fields */ |
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const AVClass *class; |
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int64_t seek_point; ///< seekpoint in microseconds |
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double seek_point_d; |
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char *format_name; |
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char *file_name; |
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char *stream_specs; /**< user-provided list of streams, separated by + */ |
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int stream_index; /**< for compatibility */ |
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int loop_count; |
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int64_t discontinuity_threshold; |
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int64_t ts_offset; |
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int dec_threads; |
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AVPacket *pkt; |
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AVFormatContext *format_ctx; |
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int eof; |
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int max_stream_index; /**< max stream # actually used for output */ |
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MovieStream *st; /**< array of all streams, one per output */ |
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int *out_index; /**< stream number -> output number map, or -1 */ |
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AVDictionary *format_opts; |
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} MovieContext; |
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#define OFFSET(x) offsetof(MovieContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
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static const AVOption movie_options[]= { |
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{ "filename", NULL, OFFSET(file_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
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{ "format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
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{ "f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
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{ "stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
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{ "si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
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{ "seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, |
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{ "sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, |
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{ "streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS }, |
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{ "s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS }, |
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{ "loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, FLAGS }, |
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{ "discontinuity", "set discontinuity threshold", OFFSET(discontinuity_threshold), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, FLAGS }, |
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{ "dec_threads", "set the number of threads for decoding", OFFSET(dec_threads), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS }, |
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{ "format_opts", "set format options for the opened file", OFFSET(format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS}, |
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{ NULL }, |
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}; |
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static int movie_config_output_props(AVFilterLink *outlink); |
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static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec) |
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{ |
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int i, ret, already = 0, stream_id = -1; |
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char type_char[2], dummy; |
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AVStream *found = NULL; |
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enum AVMediaType type; |
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ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy); |
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if (ret >= 1 && ret <= 2) { |
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type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO; |
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ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0); |
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if (ret < 0) { |
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av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n", |
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av_get_media_type_string(type), stream_id); |
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return NULL; |
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} |
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return avf->streams[ret]; |
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} |
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for (i = 0; i < avf->nb_streams; i++) { |
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ret = avformat_match_stream_specifier(avf, avf->streams[i], spec); |
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if (ret < 0) { |
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av_log(log, AV_LOG_ERROR, |
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"Invalid stream specifier \"%s\"\n", spec); |
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return NULL; |
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} |
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if (!ret) |
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continue; |
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if (avf->streams[i]->discard != AVDISCARD_ALL) { |
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already++; |
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continue; |
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} |
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if (found) { |
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av_log(log, AV_LOG_WARNING, |
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"Ambiguous stream specifier \"%s\", using #%d\n", spec, i); |
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break; |
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} |
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found = avf->streams[i]; |
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} |
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if (!found) { |
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av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec, |
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already ? "matched only already used streams" : |
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"did not match any stream"); |
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return NULL; |
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} |
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if (found->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && |
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found->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) { |
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av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream," |
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"currently unsupported by libavfilter\n", spec, |
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av_get_media_type_string(found->codecpar->codec_type)); |
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return NULL; |
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} |
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return found; |
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} |
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static int get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) |
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{ |
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int linesize_align[AV_NUM_DATA_POINTERS]; |
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MovieStream *st = avctx->opaque; |
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AVFilterLink *outlink = st->link; |
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int w, h, ow, oh, copy = 0; |
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AVFrame *new; |
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h = oh = frame->height; |
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w = ow = frame->width; |
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copy = frame->format != outlink->format; |
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switch (avctx->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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if (w != outlink->w || h != outlink->h) |
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copy |= 1; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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if (outlink->sample_rate != frame->sample_rate || |
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av_channel_layout_compare(&outlink->ch_layout, &frame->ch_layout)) |
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copy |= 1; |
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break; |
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} |
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if (copy || !(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) |
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return avcodec_default_get_buffer2(avctx, frame, flags); |
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switch (avctx->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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avcodec_align_dimensions2(avctx, &w, &h, linesize_align); |
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new = ff_default_get_video_buffer(outlink, w, h); |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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new = ff_default_get_audio_buffer(outlink, frame->nb_samples); |
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break; |
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default: |
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return -1; |
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} |
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av_frame_copy_props(new, frame); |
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av_frame_unref(frame); |
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av_frame_move_ref(frame, new); |
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av_frame_free(&new); |
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frame->width = ow; |
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frame->height = oh; |
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return 0; |
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} |
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static int open_stream(AVFilterContext *ctx, MovieStream *st, int dec_threads) |
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{ |
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const AVCodec *codec; |
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int ret; |
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codec = avcodec_find_decoder(st->st->codecpar->codec_id); |
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if (!codec) { |
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av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n"); |
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return AVERROR(EINVAL); |
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} |
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st->codec_ctx = avcodec_alloc_context3(codec); |
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if (!st->codec_ctx) |
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return AVERROR(ENOMEM); |
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st->codec_ctx->opaque = st; |
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st->codec_ctx->get_buffer2 = get_buffer; |
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ret = avcodec_parameters_to_context(st->codec_ctx, st->st->codecpar); |
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if (ret < 0) |
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return ret; |
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if (!dec_threads) |
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dec_threads = ff_filter_get_nb_threads(ctx); |
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st->codec_ctx->thread_count = dec_threads; |
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if ((ret = avcodec_open2(st->codec_ctx, codec, NULL)) < 0) { |
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av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n"); |
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return ret; |
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} |
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return 0; |
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} |
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static int guess_channel_layout(MovieStream *st, int st_index, void *log_ctx) |
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{ |
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AVCodecParameters *dec_par = st->st->codecpar; |
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char buf[256]; |
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AVChannelLayout chl = { 0 }; |
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av_channel_layout_default(&chl, dec_par->ch_layout.nb_channels); |
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if (!KNOWN(&chl)) { |
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av_log(log_ctx, AV_LOG_WARNING, |
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"Channel layout is not set in stream %d, and could not " |
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"be guessed from the number of channels (%d)\n", |
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st_index, dec_par->ch_layout.nb_channels); |
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return av_channel_layout_copy(&dec_par->ch_layout, &chl); |
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} |
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av_channel_layout_describe(&chl, buf, sizeof(buf)); |
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av_log(log_ctx, AV_LOG_WARNING, |
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"Channel layout is not set in output stream %d, " |
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"guessed channel layout is '%s'\n", |
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st_index, buf); |
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return av_channel_layout_copy(&dec_par->ch_layout, &chl); |
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} |
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static av_cold int movie_common_init(AVFilterContext *ctx) |
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{ |
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MovieContext *movie = ctx->priv; |
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const AVInputFormat *iformat = NULL; |
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int64_t timestamp; |
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int nb_streams = 1, ret, i; |
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char default_streams[16], *stream_specs, *spec, *cursor; |
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AVStream *st; |
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if (!movie->file_name) { |
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av_log(ctx, AV_LOG_ERROR, "No filename provided!\n"); |
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return AVERROR(EINVAL); |
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} |
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movie->seek_point = movie->seek_point_d * 1000000 + 0.5; |
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stream_specs = movie->stream_specs; |
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if (!stream_specs) { |
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snprintf(default_streams, sizeof(default_streams), "d%c%d", |
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!strcmp(ctx->filter->name, "amovie") ? 'a' : 'v', |
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movie->stream_index); |
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stream_specs = default_streams; |
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} |
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for (cursor = stream_specs; *cursor; cursor++) |
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if (*cursor == '+') |
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nb_streams++; |
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if (movie->loop_count != 1 && nb_streams != 1) { |
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av_log(ctx, AV_LOG_ERROR, |
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"Loop with several streams is currently unsupported\n"); |
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return AVERROR_PATCHWELCOME; |
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} |
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// Try to find the movie format (container) |
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iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL; |
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movie->format_ctx = NULL; |
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if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, &movie->format_opts)) < 0) { |
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av_log(ctx, AV_LOG_ERROR, |
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"Failed to avformat_open_input '%s'\n", movie->file_name); |
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return ret; |
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} |
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if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0) |
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av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n"); |
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// if seeking requested, we execute it |
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if (movie->seek_point > 0) { |
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timestamp = movie->seek_point; |
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// add the stream start time, should it exist |
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if (movie->format_ctx->start_time != AV_NOPTS_VALUE) { |
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if (timestamp > 0 && movie->format_ctx->start_time > INT64_MAX - timestamp) { |
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av_log(ctx, AV_LOG_ERROR, |
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"%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n", |
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movie->file_name, movie->format_ctx->start_time, movie->seek_point); |
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return AVERROR(EINVAL); |
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} |
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timestamp += movie->format_ctx->start_time; |
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} |
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if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) { |
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av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n", |
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movie->file_name, timestamp); |
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return ret; |
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} |
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} |
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for (i = 0; i < movie->format_ctx->nb_streams; i++) |
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movie->format_ctx->streams[i]->discard = AVDISCARD_ALL; |
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movie->pkt = av_packet_alloc(); |
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if (!movie->pkt) |
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return AVERROR(ENOMEM); |
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movie->st = av_calloc(nb_streams, sizeof(*movie->st)); |
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if (!movie->st) |
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return AVERROR(ENOMEM); |
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for (i = 0; i < nb_streams; i++) { |
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spec = av_strtok(stream_specs, "+", &cursor); |
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if (!spec) |
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return AVERROR_BUG; |
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stream_specs = NULL; /* for next strtok */ |
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st = find_stream(ctx, movie->format_ctx, spec); |
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if (!st) |
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return AVERROR(EINVAL); |
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st->discard = AVDISCARD_DEFAULT; |
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movie->st[i].st = st; |
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movie->max_stream_index = FFMAX(movie->max_stream_index, st->index); |
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movie->st[i].discontinuity_threshold = |
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av_rescale_q(movie->discontinuity_threshold, AV_TIME_BASE_Q, st->time_base); |
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movie->st[i].frame = av_frame_alloc(); |
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if (!movie->st[i].frame) |
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return AVERROR(ENOMEM); |
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} |
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if (av_strtok(NULL, "+", &cursor)) |
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return AVERROR_BUG; |
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movie->out_index = av_calloc(movie->max_stream_index + 1, |
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sizeof(*movie->out_index)); |
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if (!movie->out_index) |
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return AVERROR(ENOMEM); |
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for (i = 0; i <= movie->max_stream_index; i++) |
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movie->out_index[i] = -1; |
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for (i = 0; i < nb_streams; i++) { |
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AVFilterPad pad = { 0 }; |
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movie->out_index[movie->st[i].st->index] = i; |
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pad.type = movie->st[i].st->codecpar->codec_type; |
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pad.name = av_asprintf("out%d", i); |
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if (!pad.name) |
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return AVERROR(ENOMEM); |
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pad.config_props = movie_config_output_props; |
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if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0) |
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return ret; |
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if ( movie->st[i].st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
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!KNOWN(&movie->st[i].st->codecpar->ch_layout)) { |
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ret = guess_channel_layout(&movie->st[i], i, ctx); |
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if (ret < 0) |
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return ret; |
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} |
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ret = open_stream(ctx, &movie->st[i], movie->dec_threads); |
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if (ret < 0) |
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return ret; |
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} |
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av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n", |
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movie->seek_point, movie->format_name, movie->file_name, |
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movie->stream_index); |
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return 0; |
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} |
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static av_cold void movie_uninit(AVFilterContext *ctx) |
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{ |
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MovieContext *movie = ctx->priv; |
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int i; |
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for (i = 0; i < ctx->nb_outputs; i++) { |
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if (movie->st[i].st) |
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avcodec_free_context(&movie->st[i].codec_ctx); |
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av_frame_free(&movie->st[i].frame); |
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} |
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av_packet_free(&movie->pkt); |
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av_freep(&movie->st); |
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av_freep(&movie->out_index); |
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if (movie->format_ctx) |
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avformat_close_input(&movie->format_ctx); |
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} |
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static int movie_query_formats(AVFilterContext *ctx) |
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{ |
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MovieContext *movie = ctx->priv; |
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int list[] = { 0, -1 }; |
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AVChannelLayout list64[] = { { 0 }, { 0 } }; |
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int i, ret; |
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for (i = 0; i < ctx->nb_outputs; i++) { |
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MovieStream *st = &movie->st[i]; |
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AVCodecParameters *c = st->st->codecpar; |
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AVFilterLink *outlink = ctx->outputs[i]; |
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switch (c->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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list[0] = c->format; |
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if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0) |
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return ret; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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list[0] = c->format; |
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if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0) |
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return ret; |
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list[0] = c->sample_rate; |
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if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.samplerates)) < 0) |
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return ret; |
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list64[0] = c->ch_layout; |
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if ((ret = ff_channel_layouts_ref(ff_make_channel_layout_list(list64), |
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&outlink->incfg.channel_layouts)) < 0) |
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return ret; |
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break; |
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} |
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} |
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return 0; |
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} |
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static int movie_config_output_props(AVFilterLink *outlink) |
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{ |
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FilterLink *l = ff_filter_link(outlink); |
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AVFilterContext *ctx = outlink->src; |
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MovieContext *movie = ctx->priv; |
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unsigned out_id = FF_OUTLINK_IDX(outlink); |
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MovieStream *st = &movie->st[out_id]; |
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AVCodecParameters *c = st->st->codecpar; |
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outlink->time_base = st->st->time_base; |
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switch (c->codec_type) { |
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case AVMEDIA_TYPE_VIDEO: |
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outlink->w = c->width; |
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outlink->h = c->height; |
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l->frame_rate = st->st->r_frame_rate; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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break; |
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} |
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st->link = outlink; |
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return 0; |
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} |
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static int rewind_file(AVFilterContext *ctx) |
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{ |
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MovieContext *movie = ctx->priv; |
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int64_t timestamp = movie->seek_point; |
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int ret, i; |
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if (movie->format_ctx->start_time != AV_NOPTS_VALUE) |
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timestamp += movie->format_ctx->start_time; |
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ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD); |
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if (ret < 0) { |
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av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret)); |
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movie->loop_count = 1; /* do not try again */ |
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return ret; |
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} |
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for (i = 0; i < ctx->nb_outputs; i++) { |
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avcodec_flush_buffers(movie->st[i].codec_ctx); |
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} |
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return 0; |
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} |
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static int flush_decoder(AVFilterContext *ctx, int i) |
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{ |
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MovieContext *movie = ctx->priv; |
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AVCodecContext *dec = movie->st[i].codec_ctx; |
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return avcodec_send_packet(dec, NULL); |
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} |
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static int decode_packet(AVFilterContext *ctx, int i) |
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{ |
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AVFilterLink *outlink = ctx->outputs[i]; |
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MovieContext *movie = ctx->priv; |
|
MovieStream *st = &movie->st[i]; |
|
AVCodecContext *dec = movie->st[i].codec_ctx; |
|
AVFrame *frame = movie->st[i].frame; |
|
AVPacket *pkt = movie->pkt; |
|
int ret = 0; |
|
|
|
// submit the packet to the decoder |
|
if (!movie->eof) { |
|
ret = avcodec_send_packet(dec, pkt); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
// get all the available frames from the decoder |
|
if (ret >= 0) { |
|
ret = avcodec_receive_frame(dec, frame); |
|
if (ret < 0) { |
|
// those two return values are special and mean there is no output |
|
// frame available, but there were no errors during decoding |
|
if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN)) |
|
return 0; |
|
return ret; |
|
} |
|
|
|
frame->pts = frame->best_effort_timestamp; |
|
if (frame->pts != AV_NOPTS_VALUE) { |
|
if (movie->ts_offset) |
|
frame->pts += av_rescale_q_rnd(movie->ts_offset, AV_TIME_BASE_Q, outlink->time_base, AV_ROUND_UP); |
|
if (st->discontinuity_threshold) { |
|
if (st->last_pts != AV_NOPTS_VALUE) { |
|
int64_t diff = frame->pts - st->last_pts; |
|
if (diff < 0 || diff > st->discontinuity_threshold) { |
|
av_log(ctx, AV_LOG_VERBOSE, "Discontinuity in stream:%d diff:%"PRId64"\n", i, diff); |
|
movie->ts_offset += av_rescale_q_rnd(-diff, outlink->time_base, AV_TIME_BASE_Q, AV_ROUND_UP); |
|
frame->pts -= diff; |
|
} |
|
} |
|
} |
|
st->last_pts = frame->pts; |
|
} |
|
ret = ff_filter_frame(outlink, av_frame_clone(frame)); |
|
if (ret < 0) |
|
return ret; |
|
if (ret == 0) |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int activate(AVFilterContext *ctx) |
|
{ |
|
MovieContext *movie = ctx->priv; |
|
int wanted = 0, ret; |
|
|
|
for (int i = 0; i < ctx->nb_outputs; i++) { |
|
if (ff_outlink_frame_wanted(ctx->outputs[i])) |
|
wanted++; |
|
} |
|
|
|
if (wanted == 0) |
|
return FFERROR_NOT_READY; |
|
|
|
if (!movie->eof) { |
|
ret = av_read_frame(movie->format_ctx, movie->pkt); |
|
if (ret < 0) { |
|
movie->eof = 1; |
|
for (int i = 0; i < ctx->nb_outputs; i++) |
|
flush_decoder(ctx, i); |
|
ff_filter_set_ready(ctx, 100); |
|
return 0; |
|
} else { |
|
int pkt_out_id = movie->pkt->stream_index > movie->max_stream_index ? -1 : |
|
movie->out_index[movie->pkt->stream_index]; |
|
|
|
if (pkt_out_id >= 0) { |
|
ret = decode_packet(ctx, pkt_out_id); |
|
} |
|
av_packet_unref(movie->pkt); |
|
ff_filter_set_ready(ctx, 100); |
|
return (ret <= 0) ? ret : 0; |
|
} |
|
} else { |
|
int nb_eofs = 0; |
|
|
|
for (int i = 0; i < ctx->nb_outputs; i++) { |
|
if (!movie->st[i].eof) { |
|
ret = decode_packet(ctx, i); |
|
if (ret <= 0) |
|
movie->st[i].eof = 1; |
|
} |
|
nb_eofs += movie->st[i].eof == 1; |
|
} |
|
if (nb_eofs == ctx->nb_outputs && movie->loop_count != 1) { |
|
ret = rewind_file(ctx); |
|
if (ret < 0) |
|
return ret; |
|
movie->loop_count -= movie->loop_count > 1; |
|
av_log(ctx, AV_LOG_VERBOSE, "Stream finished, looping.\n"); |
|
ff_filter_set_ready(ctx, 100); |
|
for (int i = 0; i < ctx->nb_outputs; i++) |
|
movie->st[i].eof = 0; |
|
movie->eof = 0; |
|
return 0; |
|
} else { |
|
for (int i = 0; i < ctx->nb_outputs; i++) { |
|
if (movie->st[i].eof) { |
|
ff_outlink_set_status(ctx->outputs[i], AVERROR_EOF, movie->st[i].last_pts); |
|
nb_eofs++; |
|
} |
|
} |
|
} |
|
|
|
if (nb_eofs < ctx->nb_outputs) |
|
ff_filter_set_ready(ctx, 100); |
|
return 0; |
|
} |
|
|
|
return FFERROR_NOT_READY; |
|
} |
|
|
|
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
|
char *res, int res_len, int flags) |
|
{ |
|
MovieContext *movie = ctx->priv; |
|
int ret = AVERROR(ENOSYS); |
|
|
|
if (!strcmp(cmd, "seek")) { |
|
int idx, flags, i; |
|
int64_t ts; |
|
char tail[2]; |
|
|
|
if (sscanf(args, "%i|%"SCNi64"|%i %1s", &idx, &ts, &flags, tail) != 3) |
|
return AVERROR(EINVAL); |
|
|
|
ret = av_seek_frame(movie->format_ctx, idx, ts, flags); |
|
if (ret < 0) |
|
return ret; |
|
|
|
for (i = 0; i < ctx->nb_outputs; i++) { |
|
avcodec_flush_buffers(movie->st[i].codec_ctx); |
|
} |
|
return ret; |
|
} else if (!strcmp(cmd, "get_duration")) { |
|
int print_len; |
|
char tail[2]; |
|
|
|
if (!res || res_len <= 0) |
|
return AVERROR(EINVAL); |
|
|
|
if (args && sscanf(args, "%1s", tail) == 1) |
|
return AVERROR(EINVAL); |
|
|
|
print_len = snprintf(res, res_len, "%"PRId64, movie->format_ctx->duration); |
|
if (print_len < 0 || print_len >= res_len) |
|
return AVERROR(EINVAL); |
|
|
|
return 0; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
AVFILTER_DEFINE_CLASS_EXT(movie, "(a)movie", movie_options); |
|
|
|
#if CONFIG_MOVIE_FILTER |
|
|
|
const AVFilter ff_avsrc_movie = { |
|
.name = "movie", |
|
.description = NULL_IF_CONFIG_SMALL("Read from a movie source."), |
|
.priv_size = sizeof(MovieContext), |
|
.priv_class = &movie_class, |
|
.init = movie_common_init, |
|
.activate = activate, |
|
.uninit = movie_uninit, |
|
FILTER_QUERY_FUNC(movie_query_formats), |
|
|
|
.inputs = NULL, |
|
.outputs = NULL, |
|
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
|
.process_command = process_command |
|
}; |
|
|
|
#endif /* CONFIG_MOVIE_FILTER */ |
|
|
|
#if CONFIG_AMOVIE_FILTER |
|
|
|
const AVFilter ff_avsrc_amovie = { |
|
.name = "amovie", |
|
.description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."), |
|
.priv_class = &movie_class, |
|
.priv_size = sizeof(MovieContext), |
|
.init = movie_common_init, |
|
.activate = activate, |
|
.uninit = movie_uninit, |
|
FILTER_QUERY_FUNC(movie_query_formats), |
|
|
|
.inputs = NULL, |
|
.outputs = NULL, |
|
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
|
.process_command = process_command, |
|
}; |
|
|
|
#endif /* CONFIG_AMOVIE_FILTER */
|
|
|