From b7760dd8d437d1b5d325d48a9dd317281d1d973c Mon Sep 17 00:00:00 2001 From: Jan Sebechlebsky Date: Thu, 7 Jul 2016 17:56:10 +0200 Subject: [PATCH] avformat/tee: Use BSF list API Signed-off-by: Jan Sebechlebsky --- libavformat/tee.c | 136 +++++++++++++++++++++++++++--------------------------- 1 file changed, 69 insertions(+), 67 deletions(-) diff --git a/libavformat/tee.c b/libavformat/tee.c index 5689ca39be..518af4a5d8 100644 --- a/libavformat/tee.c +++ b/libavformat/tee.c @@ -37,7 +37,7 @@ typedef enum { typedef struct { AVFormatContext *avf; - AVBitStreamFilterContext **bsfs; ///< bitstream filters per stream + AVBSFContext **bsfs; ///< bitstream filters per stream SlaveFailurePolicy on_fail; @@ -64,46 +64,6 @@ static const AVClass tee_muxer_class = { .version = LIBAVUTIL_VERSION_INT, }; -/** - * Parse list of bitstream filters and add them to the list of filters - * pointed to by bsfs. - * - * The list must be specified in the form: - * BSFS ::= BSF[,BSFS] - */ -static int parse_bsfs(void *log_ctx, const char *bsfs_spec, - AVBitStreamFilterContext **bsfs) -{ - char *bsf_name, *buf, *dup, *saveptr; - int ret = 0; - - if (!(dup = buf = av_strdup(bsfs_spec))) - return AVERROR(ENOMEM); - - while (bsf_name = av_strtok(buf, ",", &saveptr)) { - AVBitStreamFilterContext *bsf = av_bitstream_filter_init(bsf_name); - - if (!bsf) { - av_log(log_ctx, AV_LOG_ERROR, - "Cannot initialize bitstream filter with name '%s', " - "unknown filter or internal error happened\n", - bsf_name); - ret = AVERROR_UNKNOWN; - goto end; - } - - /* append bsf context to the list of bsf contexts */ - *bsfs = bsf; - bsfs = &bsf->next; - - buf = NULL; - } - -end: - av_free(dup); - return ret; -} - static inline int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave) { if (!opt) { @@ -135,14 +95,8 @@ static int close_slave(TeeSlave *tee_slave) ret = av_write_trailer(avf); if (tee_slave->bsfs) { - for (i = 0; i < avf->nb_streams; ++i) { - AVBitStreamFilterContext *bsf_next, *bsf = tee_slave->bsfs[i]; - while (bsf) { - bsf_next = bsf->next; - av_bitstream_filter_close(bsf); - bsf = bsf_next; - } - } + for (i = 0; i < avf->nb_streams; ++i) + av_bsf_free(&tee_slave->bsfs[i]); } av_freep(&tee_slave->stream_map); av_freep(&tee_slave->bsfs); @@ -312,7 +266,7 @@ static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave) "output '%s', filters will be ignored\n", i, filename); continue; } - ret = parse_bsfs(avf, entry->value, &tee_slave->bsfs[i]); + ret = av_bsf_list_parse_str(entry->value, &tee_slave->bsfs[i]); if (ret < 0) { av_log(avf, AV_LOG_ERROR, "Error parsing bitstream filter sequence '%s' associated to " @@ -325,6 +279,37 @@ static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave) av_dict_set(&options, entry->key, NULL, 0); } + for (i = 0; i < avf->nb_streams; i++){ + int target_stream = tee_slave->stream_map[i]; + if (target_stream < 0) + continue; + + if (!tee_slave->bsfs[target_stream]) { + /* Add pass-through bitstream filter */ + ret = av_bsf_get_null_filter(&tee_slave->bsfs[target_stream]); + if (ret < 0) { + av_log(avf, AV_LOG_ERROR, + "Failed to create pass-through bitstream filter: %s\n", + av_err2str(ret)); + goto end; + } + } + + tee_slave->bsfs[target_stream]->time_base_in = avf->streams[i]->time_base; + ret = avcodec_parameters_copy(tee_slave->bsfs[target_stream]->par_in, + avf->streams[i]->codecpar); + if (ret < 0) + goto end; + + ret = av_bsf_init(tee_slave->bsfs[target_stream]); + if (ret < 0) { + av_log(avf, AV_LOG_ERROR, + "Failed to initialize bitstream filter(s): %s\n", + av_err2str(ret)); + goto end; + } + } + if (options) { entry = NULL; while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX))) @@ -349,20 +334,16 @@ static void log_slave(TeeSlave *slave, void *log_ctx, int log_level) slave->avf->filename, slave->avf->oformat->name); for (i = 0; i < slave->avf->nb_streams; i++) { AVStream *st = slave->avf->streams[i]; - AVBitStreamFilterContext *bsf = slave->bsfs[i]; + AVBSFContext *bsf = slave->bsfs[i]; + const char *bsf_name; av_log(log_ctx, log_level, " stream:%d codec:%s type:%s", i, avcodec_get_name(st->codecpar->codec_id), av_get_media_type_string(st->codecpar->codec_type)); - if (bsf) { - av_log(log_ctx, log_level, " bsfs:"); - while (bsf) { - av_log(log_ctx, log_level, "%s%s", - bsf->filter->name, bsf->next ? "," : ""); - bsf = bsf->next; - } - } - av_log(log_ctx, log_level, "\n"); + + bsf_name = bsf->filter->priv_class ? + bsf->filter->priv_class->item_name(bsf) : bsf->filter->name; + av_log(log_ctx, log_level, " bsfs: %s\n", bsf_name); } } @@ -469,11 +450,11 @@ static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt) { TeeContext *tee = avf->priv_data; AVFormatContext *avf2; + AVBSFContext *bsfs; AVPacket pkt2; int ret_all = 0, ret; unsigned i, s; int s2; - AVRational tb, tb2; for (i = 0; i < tee->nb_slaves; i++) { if (!(avf2 = tee->slaves[i].avf)) @@ -501,14 +482,35 @@ static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt) ret_all = ret; continue; } - tb = avf ->streams[s ]->time_base; - tb2 = avf2->streams[s2]->time_base; - av_packet_rescale_ts(&pkt2, tb, tb2); + bsfs = tee->slaves[i].bsfs[s2]; pkt2.stream_index = s2; - if ((ret = av_apply_bitstream_filters(avf2->streams[s2]->codec, &pkt2, - tee->slaves[i].bsfs[s2])) < 0 || - (ret = av_interleaved_write_frame(avf2, &pkt2)) < 0) { + ret = av_bsf_send_packet(bsfs, &pkt2); + if (ret < 0) { + av_log(avf, AV_LOG_ERROR, "Error while sending packet to bitstream filter: %s\n", + av_err2str(ret)); + ret = tee_process_slave_failure(avf, i, ret); + if (!ret_all && ret < 0) + ret_all = ret; + } + + while(1) { + ret = av_bsf_receive_packet(bsfs, &pkt2); + if (ret == AVERROR(EAGAIN)) { + ret = 0; + break; + } else if (ret < 0) { + break; + } + + av_packet_rescale_ts(&pkt2, bsfs->time_base_out, + avf2->streams[s2]->time_base); + ret = av_interleaved_write_frame(avf2, &pkt2); + if (ret < 0) + break; + }; + + if (ret < 0) { ret = tee_process_slave_failure(avf, i, ret); if (!ret_all && ret < 0) ret_all = ret; -- 2.11.0