| /* |
| * Copyright (c) 2010 Stefano Sabatini |
| * Copyright (c) 2008 Victor Paesa |
| * |
| * 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 |
| * movie video source |
| * |
| * @todo use direct rendering (no allocation of a new frame) |
| * @todo support a PTS correction mechanism |
| */ |
| |
| #include <float.h> |
| #include <stdint.h> |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/timestamp.h" |
| |
| #include "libavcodec/avcodec.h" |
| |
| #include "libavformat/avformat.h" |
| |
| #include "audio.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct MovieStream { |
| AVStream *st; |
| AVCodecContext *codec_ctx; |
| int64_t discontinuity_threshold; |
| int64_t last_pts; |
| } MovieStream; |
| |
| typedef struct MovieContext { |
| /* common A/V fields */ |
| const AVClass *class; |
| int64_t seek_point; ///< seekpoint in microseconds |
| double seek_point_d; |
| char *format_name; |
| char *file_name; |
| char *stream_specs; /**< user-provided list of streams, separated by + */ |
| int stream_index; /**< for compatibility */ |
| int loop_count; |
| int64_t discontinuity_threshold; |
| int64_t ts_offset; |
| |
| AVFormatContext *format_ctx; |
| |
| int max_stream_index; /**< max stream # actually used for output */ |
| MovieStream *st; /**< array of all streams, one per output */ |
| int *out_index; /**< stream number -> output number map, or -1 */ |
| } MovieContext; |
| |
| #define OFFSET(x) offsetof(MovieContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_AUDIO_PARAM | 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 }, |
| { "streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS }, |
| { "s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, 0, 0, FLAGS }, |
| { "loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, FLAGS }, |
| { "discontinuity", "set discontinuity threshold", OFFSET(discontinuity_threshold), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, FLAGS }, |
| { NULL }, |
| }; |
| |
| static int movie_config_output_props(AVFilterLink *outlink); |
| static int movie_request_frame(AVFilterLink *outlink); |
| |
| static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec) |
| { |
| int i, ret, already = 0, stream_id = -1; |
| char type_char[2], dummy; |
| AVStream *found = NULL; |
| enum AVMediaType type; |
| |
| ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy); |
| if (ret >= 1 && ret <= 2) { |
| type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO; |
| ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0); |
| if (ret < 0) { |
| av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n", |
| av_get_media_type_string(type), stream_id); |
| return NULL; |
| } |
| return avf->streams[ret]; |
| } |
| for (i = 0; i < avf->nb_streams; i++) { |
| ret = avformat_match_stream_specifier(avf, avf->streams[i], spec); |
| if (ret < 0) { |
| av_log(log, AV_LOG_ERROR, |
| "Invalid stream specifier \"%s\"\n", spec); |
| return NULL; |
| } |
| if (!ret) |
| continue; |
| if (avf->streams[i]->discard != AVDISCARD_ALL) { |
| already++; |
| continue; |
| } |
| if (found) { |
| av_log(log, AV_LOG_WARNING, |
| "Ambiguous stream specifier \"%s\", using #%d\n", spec, i); |
| break; |
| } |
| found = avf->streams[i]; |
| } |
| if (!found) { |
| av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec, |
| already ? "matched only already used streams" : |
| "did not match any stream"); |
| return NULL; |
| } |
| if (found->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && |
| found->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) { |
| av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream," |
| "currently unsupported by libavfilter\n", spec, |
| av_get_media_type_string(found->codecpar->codec_type)); |
| return NULL; |
| } |
| return found; |
| } |
| |
| static int open_stream(AVFilterContext *ctx, MovieStream *st) |
| { |
| const AVCodec *codec; |
| int ret; |
| |
| codec = avcodec_find_decoder(st->st->codecpar->codec_id); |
| if (!codec) { |
| av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| st->codec_ctx = avcodec_alloc_context3(codec); |
| if (!st->codec_ctx) |
| return AVERROR(ENOMEM); |
| |
| ret = avcodec_parameters_to_context(st->codec_ctx, st->st->codecpar); |
| if (ret < 0) |
| return ret; |
| |
| st->codec_ctx->thread_count = ff_filter_get_nb_threads(ctx); |
| |
| if ((ret = avcodec_open2(st->codec_ctx, codec, NULL)) < 0) { |
| av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int guess_channel_layout(MovieStream *st, int st_index, void *log_ctx) |
| { |
| AVCodecParameters *dec_par = st->st->codecpar; |
| char buf[256]; |
| int64_t chl = av_get_default_channel_layout(dec_par->channels); |
| |
| if (!chl) { |
| av_log(log_ctx, AV_LOG_ERROR, |
| "Channel layout is not set in stream %d, and could not " |
| "be guessed from the number of channels (%d)\n", |
| st_index, dec_par->channels); |
| return AVERROR(EINVAL); |
| } |
| |
| av_get_channel_layout_string(buf, sizeof(buf), dec_par->channels, chl); |
| av_log(log_ctx, AV_LOG_WARNING, |
| "Channel layout is not set in output stream %d, " |
| "guessed channel layout is '%s'\n", |
| st_index, buf); |
| dec_par->channel_layout = chl; |
| return 0; |
| } |
| |
| static av_cold int movie_common_init(AVFilterContext *ctx) |
| { |
| MovieContext *movie = ctx->priv; |
| AVInputFormat *iformat = NULL; |
| int64_t timestamp; |
| int nb_streams = 1, ret, i; |
| char default_streams[16], *stream_specs, *spec, *cursor; |
| AVStream *st; |
| |
| if (!movie->file_name) { |
| av_log(ctx, AV_LOG_ERROR, "No filename provided!\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| movie->seek_point = movie->seek_point_d * 1000000 + 0.5; |
| |
| stream_specs = movie->stream_specs; |
| if (!stream_specs) { |
| snprintf(default_streams, sizeof(default_streams), "d%c%d", |
| !strcmp(ctx->filter->name, "amovie") ? 'a' : 'v', |
| movie->stream_index); |
| stream_specs = default_streams; |
| } |
| for (cursor = stream_specs; *cursor; cursor++) |
| if (*cursor == '+') |
| nb_streams++; |
| |
| if (movie->loop_count != 1 && nb_streams != 1) { |
| av_log(ctx, AV_LOG_ERROR, |
| "Loop with several streams is currently unsupported\n"); |
| return AVERROR_PATCHWELCOME; |
| } |
| |
| // 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 > 0 && movie->format_ctx->start_time > INT64_MAX - timestamp) { |
| 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; |
| } |
| } |
| |
| for (i = 0; i < movie->format_ctx->nb_streams; i++) |
| movie->format_ctx->streams[i]->discard = AVDISCARD_ALL; |
| |
| movie->st = av_calloc(nb_streams, sizeof(*movie->st)); |
| if (!movie->st) |
| return AVERROR(ENOMEM); |
| |
| for (i = 0; i < nb_streams; i++) { |
| spec = av_strtok(stream_specs, "+", &cursor); |
| if (!spec) |
| return AVERROR_BUG; |
| stream_specs = NULL; /* for next strtok */ |
| st = find_stream(ctx, movie->format_ctx, spec); |
| if (!st) |
| return AVERROR(EINVAL); |
| st->discard = AVDISCARD_DEFAULT; |
| movie->st[i].st = st; |
| movie->max_stream_index = FFMAX(movie->max_stream_index, st->index); |
| movie->st[i].discontinuity_threshold = |
| av_rescale_q(movie->discontinuity_threshold, AV_TIME_BASE_Q, st->time_base); |
| } |
| if (av_strtok(NULL, "+", &cursor)) |
| return AVERROR_BUG; |
| |
| movie->out_index = av_calloc(movie->max_stream_index + 1, |
| sizeof(*movie->out_index)); |
| if (!movie->out_index) |
| return AVERROR(ENOMEM); |
| for (i = 0; i <= movie->max_stream_index; i++) |
| movie->out_index[i] = -1; |
| for (i = 0; i < nb_streams; i++) { |
| AVFilterPad pad = { 0 }; |
| movie->out_index[movie->st[i].st->index] = i; |
| pad.type = movie->st[i].st->codecpar->codec_type; |
| pad.name = av_asprintf("out%d", i); |
| if (!pad.name) |
| return AVERROR(ENOMEM); |
| pad.config_props = movie_config_output_props; |
| pad.request_frame = movie_request_frame; |
| if ((ret = ff_insert_outpad(ctx, i, &pad)) < 0) { |
| av_freep(&pad.name); |
| return ret; |
| } |
| if ( movie->st[i].st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && |
| !movie->st[i].st->codecpar->channel_layout) { |
| ret = guess_channel_layout(&movie->st[i], i, ctx); |
| if (ret < 0) |
| return ret; |
| } |
| ret = open_stream(ctx, &movie->st[i]); |
| if (ret < 0) |
| return ret; |
| } |
| |
| 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 void movie_uninit(AVFilterContext *ctx) |
| { |
| MovieContext *movie = ctx->priv; |
| int i; |
| |
| for (i = 0; i < ctx->nb_outputs; i++) { |
| av_freep(&ctx->output_pads[i].name); |
| if (movie->st[i].st) |
| avcodec_free_context(&movie->st[i].codec_ctx); |
| } |
| av_freep(&movie->st); |
| av_freep(&movie->out_index); |
| if (movie->format_ctx) |
| avformat_close_input(&movie->format_ctx); |
| } |
| |
| static int movie_query_formats(AVFilterContext *ctx) |
| { |
| MovieContext *movie = ctx->priv; |
| int list[] = { 0, -1 }; |
| int64_t list64[] = { 0, -1 }; |
| int i, ret; |
| |
| for (i = 0; i < ctx->nb_outputs; i++) { |
| MovieStream *st = &movie->st[i]; |
| AVCodecParameters *c = st->st->codecpar; |
| AVFilterLink *outlink = ctx->outputs[i]; |
| |
| switch (c->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| list[0] = c->format; |
| if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0) |
| return ret; |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| list[0] = c->format; |
| if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.formats)) < 0) |
| return ret; |
| list[0] = c->sample_rate; |
| if ((ret = ff_formats_ref(ff_make_format_list(list), &outlink->incfg.samplerates)) < 0) |
| return ret; |
| list64[0] = c->channel_layout; |
| if ((ret = ff_channel_layouts_ref(ff_make_format64_list(list64), |
| &outlink->incfg.channel_layouts)) < 0) |
| return ret; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int movie_config_output_props(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| MovieContext *movie = ctx->priv; |
| unsigned out_id = FF_OUTLINK_IDX(outlink); |
| MovieStream *st = &movie->st[out_id]; |
| AVCodecParameters *c = st->st->codecpar; |
| |
| outlink->time_base = st->st->time_base; |
| |
| switch (c->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| outlink->w = c->width; |
| outlink->h = c->height; |
| outlink->frame_rate = st->st->r_frame_rate; |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static char *describe_frame_to_str(char *dst, size_t dst_size, |
| AVFrame *frame, enum AVMediaType frame_type, |
| AVFilterLink *link) |
| { |
| switch (frame_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| snprintf(dst, dst_size, |
| "video pts:%s time:%s size:%dx%d aspect:%d/%d", |
| av_ts2str(frame->pts), av_ts2timestr(frame->pts, &link->time_base), |
| frame->width, frame->height, |
| frame->sample_aspect_ratio.num, |
| frame->sample_aspect_ratio.den); |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| snprintf(dst, dst_size, |
| "audio pts:%s time:%s samples:%d", |
| av_ts2str(frame->pts), av_ts2timestr(frame->pts, &link->time_base), |
| frame->nb_samples); |
| break; |
| default: |
| snprintf(dst, dst_size, "%s BUG", av_get_media_type_string(frame_type)); |
| break; |
| } |
| return dst; |
| } |
| |
| static int rewind_file(AVFilterContext *ctx) |
| { |
| MovieContext *movie = ctx->priv; |
| int64_t timestamp = movie->seek_point; |
| int ret, i; |
| |
| if (movie->format_ctx->start_time != AV_NOPTS_VALUE) |
| timestamp += movie->format_ctx->start_time; |
| ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD); |
| if (ret < 0) { |
| av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret)); |
| movie->loop_count = 1; /* do not try again */ |
| return ret; |
| } |
| |
| for (i = 0; i < ctx->nb_outputs; i++) { |
| avcodec_flush_buffers(movie->st[i].codec_ctx); |
| } |
| return 0; |
| } |
| |
| static int movie_decode_packet(AVFilterContext *ctx) |
| { |
| MovieContext *movie = ctx->priv; |
| AVPacket pkt = { 0 }; |
| int pkt_out_id, ret; |
| |
| /* read a new packet from input stream */ |
| ret = av_read_frame(movie->format_ctx, &pkt); |
| if (ret == AVERROR_EOF) { |
| /* EOF -> set all decoders for flushing */ |
| for (int i = 0; i < ctx->nb_outputs; i++) { |
| ret = avcodec_send_packet(movie->st[i].codec_ctx, NULL); |
| if (ret < 0 && ret != AVERROR_EOF) |
| return ret; |
| } |
| |
| return 0; |
| } else if (ret < 0) |
| return ret; |
| |
| /* send the packet to its decoder, if any */ |
| pkt_out_id = pkt.stream_index > movie->max_stream_index ? -1 : |
| movie->out_index[pkt.stream_index]; |
| if (pkt_out_id >= 0) |
| ret = avcodec_send_packet(movie->st[pkt_out_id].codec_ctx, &pkt); |
| av_packet_unref(&pkt); |
| |
| return ret; |
| } |
| |
| /** |
| * Try to push a frame to the requested output. |
| * |
| * @param ctx filter context |
| * @param out_id number of output where a frame is wanted; |
| * @return 0 if a frame was pushed on the requested output, |
| * AVERROR(EAGAIN) if the decoder requires more input |
| * AVERROR(EOF) if the decoder has been completely flushed |
| * <0 AVERROR code |
| */ |
| static int movie_push_frame(AVFilterContext *ctx, unsigned out_id) |
| { |
| MovieContext *movie = ctx->priv; |
| MovieStream *st = &movie->st[out_id]; |
| AVFilterLink *outlink = ctx->outputs[out_id]; |
| AVFrame *frame; |
| int ret; |
| |
| frame = av_frame_alloc(); |
| if (!frame) |
| return AVERROR(ENOMEM); |
| |
| ret = avcodec_receive_frame(st->codec_ctx, frame); |
| if (ret < 0) { |
| if (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)) |
| av_log(ctx, AV_LOG_WARNING, "Decode error: %s\n", av_err2str(ret)); |
| |
| av_frame_free(&frame); |
| 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", out_id, 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; |
| } |
| ff_dlog(ctx, "movie_push_frame(): file:'%s' %s\n", movie->file_name, |
| describe_frame_to_str((char[1024]){0}, 1024, frame, |
| st->st->codecpar->codec_type, outlink)); |
| |
| if (st->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
| if (frame->format != outlink->format) { |
| av_log(ctx, AV_LOG_ERROR, "Format changed %s -> %s, discarding frame\n", |
| av_get_pix_fmt_name(outlink->format), |
| av_get_pix_fmt_name(frame->format) |
| ); |
| av_frame_free(&frame); |
| return 0; |
| } |
| } |
| ret = ff_filter_frame(outlink, frame); |
| |
| if (ret < 0) |
| return ret; |
| return 0; |
| } |
| |
| static int movie_request_frame(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| MovieContext *movie = ctx->priv; |
| unsigned out_id = FF_OUTLINK_IDX(outlink); |
| |
| while (1) { |
| int got_eagain = 0, got_eof = 0; |
| int ret = 0; |
| |
| /* check all decoders for available output */ |
| for (int i = 0; i < ctx->nb_outputs; i++) { |
| ret = movie_push_frame(ctx, i); |
| if (ret == AVERROR(EAGAIN)) |
| got_eagain++; |
| else if (ret == AVERROR_EOF) |
| got_eof++; |
| else if (ret < 0) |
| return ret; |
| else if (i == out_id) |
| return 0; |
| } |
| |
| if (got_eagain) { |
| /* all decoders require more input -> read a new packet */ |
| ret = movie_decode_packet(ctx); |
| if (ret < 0) |
| return ret; |
| } else if (got_eof) { |
| /* all decoders flushed */ |
| if (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"); |
| continue; |
| } |
| return AVERROR_EOF; |
| } |
| } |
| } |
| |
| 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; |
| } |
| |
| #if CONFIG_MOVIE_FILTER |
| |
| AVFILTER_DEFINE_CLASS(movie); |
| |
| 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, |
| .uninit = movie_uninit, |
| .query_formats = movie_query_formats, |
| |
| .inputs = NULL, |
| .outputs = NULL, |
| .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| .process_command = process_command |
| }; |
| |
| #endif /* CONFIG_MOVIE_FILTER */ |
| |
| #if CONFIG_AMOVIE_FILTER |
| |
| #define amovie_options movie_options |
| AVFILTER_DEFINE_CLASS(amovie); |
| |
| AVFilter ff_avsrc_amovie = { |
| .name = "amovie", |
| .description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."), |
| .priv_size = sizeof(MovieContext), |
| .init = movie_common_init, |
| .uninit = movie_uninit, |
| .query_formats = movie_query_formats, |
| |
| .inputs = NULL, |
| .outputs = NULL, |
| .priv_class = &amovie_class, |
| .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| .process_command = process_command, |
| }; |
| |
| #endif /* CONFIG_AMOVIE_FILTER */ |
