/* * avconv main * Copyright (c) 2000-2011 The Libav developers * * 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 */ #include "config.h" #include #include #include #include #include #include #include #include #include "libavformat/avformat.h" #include "libavdevice/avdevice.h" #include "libswscale/swscale.h" #include "libavresample/avresample.h" #include "libavutil/opt.h" #include "libavutil/channel_layout.h" #include "libavutil/parseutils.h" #include "libavutil/samplefmt.h" #include "libavutil/fifo.h" #include "libavutil/internal.h" #include "libavutil/intreadwrite.h" #include "libavutil/dict.h" #include "libavutil/mathematics.h" #include "libavutil/pixdesc.h" #include "libavutil/avstring.h" #include "libavutil/libm.h" #include "libavutil/imgutils.h" #include "libavutil/time.h" #include "libavformat/os_support.h" # include "libavfilter/avfilter.h" # include "libavfilter/buffersrc.h" # include "libavfilter/buffersink.h" #if HAVE_SYS_RESOURCE_H #include #include #include #elif HAVE_GETPROCESSTIMES #include #endif #if HAVE_GETPROCESSMEMORYINFO #include #include #endif #if HAVE_SYS_SELECT_H #include #endif #if HAVE_PTHREADS #include #endif #include #include "avconv.h" #include "cmdutils.h" #include "libavutil/avassert.h" const char program_name[] = "avconv"; const int program_birth_year = 2000; static FILE *vstats_file; static int nb_frames_drop = 0; #if HAVE_PTHREADS /* signal to input threads that they should exit; set by the main thread */ static int transcoding_finished; #endif InputStream **input_streams = NULL; int nb_input_streams = 0; InputFile **input_files = NULL; int nb_input_files = 0; OutputStream **output_streams = NULL; int nb_output_streams = 0; OutputFile **output_files = NULL; int nb_output_files = 0; FilterGraph **filtergraphs; int nb_filtergraphs; static void term_exit(void) { av_log(NULL, AV_LOG_QUIET, ""); } static volatile int received_sigterm = 0; static volatile int received_nb_signals = 0; static void sigterm_handler(int sig) { received_sigterm = sig; received_nb_signals++; term_exit(); } static void term_init(void) { signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */ signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */ #ifdef SIGXCPU signal(SIGXCPU, sigterm_handler); #endif } static int decode_interrupt_cb(void *ctx) { return received_nb_signals > 1; } const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL }; static void avconv_cleanup(int ret) { int i, j; for (i = 0; i < nb_filtergraphs; i++) { FilterGraph *fg = filtergraphs[i]; avfilter_graph_free(&fg->graph); for (j = 0; j < fg->nb_inputs; j++) { av_freep(&fg->inputs[j]->name); av_freep(&fg->inputs[j]); } av_freep(&fg->inputs); for (j = 0; j < fg->nb_outputs; j++) { av_freep(&fg->outputs[j]->name); av_freep(&fg->outputs[j]); } av_freep(&fg->outputs); av_freep(&fg->graph_desc); av_freep(&filtergraphs[i]); } av_freep(&filtergraphs); /* close files */ for (i = 0; i < nb_output_files; i++) { OutputFile *of = output_files[i]; AVFormatContext *s = of->ctx; if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb) avio_close(s->pb); avformat_free_context(s); av_dict_free(&of->opts); av_freep(&output_files[i]); } for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; for (j = 0; j < ost->nb_bitstream_filters; j++) av_bsf_free(&ost->bsf_ctx[j]); av_freep(&ost->bsf_ctx); av_freep(&ost->bitstream_filters); av_frame_free(&ost->filtered_frame); av_parser_close(ost->parser); avcodec_free_context(&ost->parser_avctx); av_freep(&ost->forced_keyframes); av_freep(&ost->avfilter); av_freep(&ost->logfile_prefix); avcodec_free_context(&ost->enc_ctx); av_freep(&output_streams[i]); } for (i = 0; i < nb_input_files; i++) { avformat_close_input(&input_files[i]->ctx); av_freep(&input_files[i]); } for (i = 0; i < nb_input_streams; i++) { InputStream *ist = input_streams[i]; av_frame_free(&ist->decoded_frame); av_frame_free(&ist->filter_frame); av_dict_free(&ist->decoder_opts); av_freep(&ist->filters); av_freep(&ist->hwaccel_device); avcodec_free_context(&ist->dec_ctx); av_freep(&input_streams[i]); } if (vstats_file) fclose(vstats_file); av_free(vstats_filename); av_freep(&input_streams); av_freep(&input_files); av_freep(&output_streams); av_freep(&output_files); uninit_opts(); avformat_network_deinit(); if (received_sigterm) { av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n", (int) received_sigterm); exit (255); } } void assert_avoptions(AVDictionary *m) { AVDictionaryEntry *t; if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) { av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key); exit_program(1); } } static void abort_codec_experimental(AVCodec *c, int encoder) { const char *codec_string = encoder ? "encoder" : "decoder"; AVCodec *codec; av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad " "results.\nAdd '-strict experimental' if you want to use it.\n", codec_string, c->name); codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id); if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL)) av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n", codec_string, codec->name); exit_program(1); } static void write_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost) { AVStream *st = ost->st; int ret; /* * Audio encoders may split the packets -- #frames in != #packets out. * But there is no reordering, so we can limit the number of output packets * by simply dropping them here. * Counting encoded video frames needs to be done separately because of * reordering, see do_video_out() */ if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) { if (ost->frame_number >= ost->max_frames) { av_packet_unref(pkt); return; } ost->frame_number++; } if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR, NULL); ost->quality = sd ? *(int *)sd : -1; if (ost->frame_rate.num) { pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate), ost->st->time_base); } } if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) && ost->last_mux_dts != AV_NOPTS_VALUE && pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) { av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream " "%d:%d; previous: %"PRId64", current: %"PRId64"; ", ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts); if (exit_on_error) { av_log(NULL, AV_LOG_FATAL, "aborting.\n"); exit_program(1); } av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result " "in incorrect timestamps in the output file.\n", ost->last_mux_dts + 1); pkt->dts = ost->last_mux_dts + 1; if (pkt->pts != AV_NOPTS_VALUE) pkt->pts = FFMAX(pkt->pts, pkt->dts); } ost->last_mux_dts = pkt->dts; ost->data_size += pkt->size; ost->packets_written++; pkt->stream_index = ost->index; ret = av_interleaved_write_frame(s, pkt); if (ret < 0) { print_error("av_interleaved_write_frame()", ret); exit_program(1); } } static void output_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost) { int ret = 0; /* apply the output bitstream filters, if any */ if (ost->nb_bitstream_filters) { int idx; ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt); if (ret < 0) goto finish; idx = 1; while (idx) { /* get a packet from the previous filter up the chain */ ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt); if (ret == AVERROR(EAGAIN)) { ret = 0; idx--; continue; } else if (ret < 0) goto finish; /* send it to the next filter down the chain or to the muxer */ if (idx < ost->nb_bitstream_filters) { ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt); if (ret < 0) goto finish; idx++; } else write_packet(s, pkt, ost); } } else write_packet(s, pkt, ost); finish: if (ret < 0 && ret != AVERROR_EOF) { av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output " "packet for stream #%d:%d.\n", ost->file_index, ost->index); exit_program(1); } } static int check_recording_time(OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; if (of->recording_time != INT64_MAX && av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time, AV_TIME_BASE_Q) >= 0) { ost->finished = 1; return 0; } return 1; } static void do_audio_out(AVFormatContext *s, OutputStream *ost, AVFrame *frame) { AVCodecContext *enc = ost->enc_ctx; AVPacket pkt; int ret; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0) frame->pts = ost->sync_opts; ost->sync_opts = frame->pts + frame->nb_samples; ost->samples_encoded += frame->nb_samples; ost->frames_encoded++; ret = avcodec_send_frame(enc, frame); if (ret < 0) goto error; while (1) { ret = avcodec_receive_packet(enc, &pkt); if (ret == AVERROR(EAGAIN)) break; if (ret < 0) goto error; av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base); output_packet(s, &pkt, ost); } return; error: av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n"); exit_program(1); } static void do_subtitle_out(AVFormatContext *s, OutputStream *ost, InputStream *ist, AVSubtitle *sub, int64_t pts) { static uint8_t *subtitle_out = NULL; int subtitle_out_max_size = 1024 * 1024; int subtitle_out_size, nb, i; AVCodecContext *enc; AVPacket pkt; if (pts == AV_NOPTS_VALUE) { av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n"); if (exit_on_error) exit_program(1); return; } enc = ost->enc_ctx; if (!subtitle_out) { subtitle_out = av_malloc(subtitle_out_max_size); } /* Note: DVB subtitle need one packet to draw them and one other packet to clear them */ /* XXX: signal it in the codec context ? */ if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) nb = 2; else nb = 1; for (i = 0; i < nb; i++) { ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base); if (!check_recording_time(ost)) return; sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q); // start_display_time is required to be 0 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); sub->end_display_time -= sub->start_display_time; sub->start_display_time = 0; ost->frames_encoded++; subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out, subtitle_out_max_size, sub); if (subtitle_out_size < 0) { av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n"); exit_program(1); } av_init_packet(&pkt); pkt.data = subtitle_out; pkt.size = subtitle_out_size; pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base); if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { /* XXX: the pts correction is handled here. Maybe handling it in the codec would be better */ if (i == 0) pkt.pts += 90 * sub->start_display_time; else pkt.pts += 90 * sub->end_display_time; } output_packet(s, &pkt, ost); } } static void do_video_out(AVFormatContext *s, OutputStream *ost, AVFrame *in_picture, int *frame_size) { int ret, format_video_sync; AVPacket pkt; AVCodecContext *enc = ost->enc_ctx; *frame_size = 0; format_video_sync = video_sync_method; if (format_video_sync == VSYNC_AUTO) format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR; if (format_video_sync != VSYNC_PASSTHROUGH && ost->frame_number && in_picture->pts != AV_NOPTS_VALUE && in_picture->pts < ost->sync_opts) { nb_frames_drop++; av_log(NULL, AV_LOG_WARNING, "*** dropping frame %d from stream %d at ts %"PRId64"\n", ost->frame_number, ost->st->index, in_picture->pts); return; } if (in_picture->pts == AV_NOPTS_VALUE) in_picture->pts = ost->sync_opts; ost->sync_opts = in_picture->pts; if (!ost->frame_number) ost->first_pts = in_picture->pts; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; if (ost->frame_number >= ost->max_frames) return; if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) && ost->top_field_first >= 0) in_picture->top_field_first = !!ost->top_field_first; in_picture->quality = enc->global_quality; in_picture->pict_type = 0; if (ost->forced_kf_index < ost->forced_kf_count && in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) { in_picture->pict_type = AV_PICTURE_TYPE_I; ost->forced_kf_index++; } ost->frames_encoded++; ret = avcodec_send_frame(enc, in_picture); if (ret < 0) goto error; /* * For video, there may be reordering, so we can't throw away frames on * encoder flush, we need to limit them here, before they go into encoder. */ ost->frame_number++; while (1) { ret = avcodec_receive_packet(enc, &pkt); if (ret == AVERROR(EAGAIN)) break; if (ret < 0) goto error; av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base); output_packet(s, &pkt, ost); *frame_size = pkt.size; /* if two pass, output log */ if (ost->logfile && enc->stats_out) { fprintf(ost->logfile, "%s", enc->stats_out); } ost->sync_opts++; } return; error: av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF); av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n"); exit_program(1); } #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME static double psnr(double d) { return -10.0 * log(d) / log(10.0); } #endif static void do_video_stats(OutputStream *ost, int frame_size) { AVCodecContext *enc; int frame_number; double ti1, bitrate, avg_bitrate; /* this is executed just the first time do_video_stats is called */ if (!vstats_file) { vstats_file = fopen(vstats_filename, "w"); if (!vstats_file) { perror("fopen"); exit_program(1); } } enc = ost->enc_ctx; if (enc->codec_type == AVMEDIA_TYPE_VIDEO) { frame_number = ost->frame_number; fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, ost->quality / (float)FF_QP2LAMBDA); #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME FF_DISABLE_DEPRECATION_WARNINGS if (enc->flags & AV_CODEC_FLAG_PSNR) fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0))); FF_ENABLE_DEPRECATION_WARNINGS #endif fprintf(vstats_file,"f_size= %6d ", frame_size); /* compute pts value */ ti1 = ost->sync_opts * av_q2d(enc->time_base); if (ti1 < 0.01) ti1 = 0.01; bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0; avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0; fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ", (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate); #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type)); FF_ENABLE_DEPRECATION_WARNINGS #endif } } /* * Read one frame for lavfi output for ost and encode it. */ static int poll_filter(OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; AVFrame *filtered_frame = NULL; int frame_size, ret; if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) { return AVERROR(ENOMEM); } filtered_frame = ost->filtered_frame; if (ost->enc->type == AVMEDIA_TYPE_AUDIO && !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame, ost->enc_ctx->frame_size); else ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame); if (ret < 0) return ret; if (filtered_frame->pts != AV_NOPTS_VALUE) { int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time; filtered_frame->pts = av_rescale_q(filtered_frame->pts, ost->filter->filter->inputs[0]->time_base, ost->enc_ctx->time_base) - av_rescale_q(start_time, AV_TIME_BASE_Q, ost->enc_ctx->time_base); } switch (ost->filter->filter->inputs[0]->type) { case AVMEDIA_TYPE_VIDEO: if (!ost->frame_aspect_ratio) ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio; do_video_out(of->ctx, ost, filtered_frame, &frame_size); if (vstats_filename && frame_size) do_video_stats(ost, frame_size); break; case AVMEDIA_TYPE_AUDIO: do_audio_out(of->ctx, ost, filtered_frame); break; default: // TODO support subtitle filters av_assert0(0); } av_frame_unref(filtered_frame); return 0; } static void finish_output_stream(OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; int i; ost->finished = 1; if (of->shortest) { for (i = 0; i < of->ctx->nb_streams; i++) output_streams[of->ost_index + i]->finished = 1; } } /* * Read as many frames from possible from lavfi and encode them. * * Always read from the active stream with the lowest timestamp. If no frames * are available for it then return EAGAIN and wait for more input. This way we * can use lavfi sources that generate unlimited amount of frames without memory * usage exploding. */ static int poll_filters(void) { int i, ret = 0; while (ret >= 0 && !received_sigterm) { OutputStream *ost = NULL; int64_t min_pts = INT64_MAX; /* choose output stream with the lowest timestamp */ for (i = 0; i < nb_output_streams; i++) { int64_t pts = output_streams[i]->sync_opts; if (!output_streams[i]->filter || output_streams[i]->finished) continue; pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base, AV_TIME_BASE_Q); if (pts < min_pts) { min_pts = pts; ost = output_streams[i]; } } if (!ost) break; ret = poll_filter(ost); if (ret == AVERROR_EOF) { finish_output_stream(ost); ret = 0; } else if (ret == AVERROR(EAGAIN)) return 0; } return ret; } static void print_final_stats(int64_t total_size) { uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0; uint64_t data_size = 0; float percent = -1.0; int i, j; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; switch (ost->enc_ctx->codec_type) { case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break; case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break; default: other_size += ost->data_size; break; } extra_size += ost->enc_ctx->extradata_size; data_size += ost->data_size; } if (data_size && total_size >= data_size) percent = 100.0 * (total_size - data_size) / data_size; av_log(NULL, AV_LOG_INFO, "\n"); av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ", video_size / 1024.0, audio_size / 1024.0, other_size / 1024.0, extra_size / 1024.0); if (percent >= 0.0) av_log(NULL, AV_LOG_INFO, "%f%%", percent); else av_log(NULL, AV_LOG_INFO, "unknown"); av_log(NULL, AV_LOG_INFO, "\n"); /* print verbose per-stream stats */ for (i = 0; i < nb_input_files; i++) { InputFile *f = input_files[i]; uint64_t total_packets = 0, total_size = 0; av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n", i, f->ctx->filename); for (j = 0; j < f->nb_streams; j++) { InputStream *ist = input_streams[f->ist_index + j]; enum AVMediaType type = ist->dec_ctx->codec_type; total_size += ist->data_size; total_packets += ist->nb_packets; av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ", i, j, media_type_string(type)); av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ", ist->nb_packets, ist->data_size); if (ist->decoding_needed) { av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded", ist->frames_decoded); if (type == AVMEDIA_TYPE_AUDIO) av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded); av_log(NULL, AV_LOG_VERBOSE, "; "); } av_log(NULL, AV_LOG_VERBOSE, "\n"); } av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n", total_packets, total_size); } for (i = 0; i < nb_output_files; i++) { OutputFile *of = output_files[i]; uint64_t total_packets = 0, total_size = 0; av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n", i, of->ctx->filename); for (j = 0; j < of->ctx->nb_streams; j++) { OutputStream *ost = output_streams[of->ost_index + j]; enum AVMediaType type = ost->enc_ctx->codec_type; total_size += ost->data_size; total_packets += ost->packets_written; av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ", i, j, media_type_string(type)); if (ost->encoding_needed) { av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded", ost->frames_encoded); if (type == AVMEDIA_TYPE_AUDIO) av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded); av_log(NULL, AV_LOG_VERBOSE, "; "); } av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ", ost->packets_written, ost->data_size); av_log(NULL, AV_LOG_VERBOSE, "\n"); } av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n", total_packets, total_size); } } static void print_report(int is_last_report, int64_t timer_start) { char buf[1024]; OutputStream *ost; AVFormatContext *oc; int64_t total_size; AVCodecContext *enc; int frame_number, vid, i; double bitrate, ti1, pts; static int64_t last_time = -1; static int qp_histogram[52]; if (!print_stats && !is_last_report) return; if (!is_last_report) { int64_t cur_time; /* display the report every 0.5 seconds */ cur_time = av_gettime_relative(); if (last_time == -1) { last_time = cur_time; return; } if ((cur_time - last_time) < 500000) return; last_time = cur_time; } oc = output_files[0]->ctx; total_size = avio_size(oc->pb); if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too total_size = avio_tell(oc->pb); if (total_size < 0) { char errbuf[128]; av_strerror(total_size, errbuf, sizeof(errbuf)); av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, " "avio_tell() failed: %s\n", errbuf); total_size = 0; } buf[0] = '\0'; ti1 = 1e10; vid = 0; for (i = 0; i < nb_output_streams; i++) { float q = -1; ost = output_streams[i]; enc = ost->enc_ctx; if (!ost->stream_copy) q = ost->quality / (float) FF_QP2LAMBDA; if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) { snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q); } if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) { float t = (av_gettime_relative() - timer_start) / 1000000.0; frame_number = ost->frame_number; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ", frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q); if (is_last_report) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L"); if (qp_hist) { int j; int qp = lrintf(q); if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram)) qp_histogram[qp]++; for (j = 0; j < 32; j++) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1))); } #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME FF_DISABLE_DEPRECATION_WARNINGS if (enc->flags & AV_CODEC_FLAG_PSNR) { int j; double error, error_sum = 0; double scale, scale_sum = 0; char type[3] = { 'Y','U','V' }; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR="); for (j = 0; j < 3; j++) { if (is_last_report) { error = enc->error[j]; scale = enc->width * enc->height * 255.0 * 255.0 * frame_number; } else { error = enc->coded_frame->error[j]; scale = enc->width * enc->height * 255.0 * 255.0; } if (j) scale /= 4; error_sum += error; scale_sum += scale; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale)); } snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum)); } FF_ENABLE_DEPRECATION_WARNINGS #endif vid = 1; } /* compute min output value */ pts = (double)ost->last_mux_dts * av_q2d(ost->st->time_base); if ((pts < ti1) && (pts > 0)) ti1 = pts; } if (ti1 < 0.01) ti1 = 0.01; bitrate = (double)(total_size * 8) / ti1 / 1000.0; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s", (double)total_size / 1024, ti1, bitrate); if (nb_frames_drop) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d", nb_frames_drop); av_log(NULL, AV_LOG_INFO, "%s \r", buf); fflush(stderr); if (is_last_report) print_final_stats(total_size); } static void flush_encoders(void) { int i, ret; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; AVCodecContext *enc = ost->enc_ctx; AVFormatContext *os = output_files[ost->file_index]->ctx; int stop_encoding = 0; if (!ost->encoding_needed) continue; if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1) continue; if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO) continue; avcodec_send_frame(enc, NULL); for (;;) { const char *desc = NULL; switch (enc->codec_type) { case AVMEDIA_TYPE_AUDIO: desc = "Audio"; break; case AVMEDIA_TYPE_VIDEO: desc = "Video"; break; default: av_assert0(0); } if (1) { AVPacket pkt; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; ret = avcodec_receive_packet(enc, &pkt); if (ret < 0 && ret != AVERROR_EOF) { av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc); exit_program(1); } if (ost->logfile && enc->stats_out) { fprintf(ost->logfile, "%s", enc->stats_out); } if (ret == AVERROR_EOF) { stop_encoding = 1; break; } av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base); output_packet(os, &pkt, ost); } if (stop_encoding) break; } } } /* * Check whether a packet from ist should be written into ost at this time */ static int check_output_constraints(InputStream *ist, OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; int ist_index = input_files[ist->file_index]->ist_index + ist->st->index; if (ost->source_index != ist_index) return 0; if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time) return 0; return 1; } static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt) { OutputFile *of = output_files[ost->file_index]; InputFile *f = input_files [ist->file_index]; int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time; int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base); AVPacket opkt; av_init_packet(&opkt); if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !ost->copy_initial_nonkeyframes) return; if (of->recording_time != INT64_MAX && ist->last_dts >= of->recording_time + start_time) { ost->finished = 1; return; } if (f->recording_time != INT64_MAX) { start_time = f->ctx->start_time; if (f->start_time != AV_NOPTS_VALUE) start_time += f->start_time; if (ist->last_dts >= f->recording_time + start_time) { ost->finished = 1; return; } } /* force the input stream PTS */ if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) ost->sync_opts++; if (pkt->pts != AV_NOPTS_VALUE) opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time; else opkt.pts = AV_NOPTS_VALUE; if (pkt->dts == AV_NOPTS_VALUE) opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base); else opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base); opkt.dts -= ost_tb_start_time; opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base); opkt.flags = pkt->flags; // FIXME remove the following 2 lines they shall be replaced by the bitstream filters if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1 ) { if (av_parser_change(ost->parser, ost->parser_avctx, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) { opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0); if (!opkt.buf) exit_program(1); } } else { opkt.data = pkt->data; opkt.size = pkt->size; } output_packet(of->ctx, &opkt, ost); } // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2. // There is the following difference: if you got a frame, you must call // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet) static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt) { int ret; *got_frame = 0; if (pkt) { ret = avcodec_send_packet(avctx, pkt); // In particular, we don't expect AVERROR(EAGAIN), because we read all // decoded frames with avcodec_receive_frame() until done. if (ret < 0) return ret == AVERROR_EOF ? 0 : ret; } ret = avcodec_receive_frame(avctx, frame); if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) return ret; if (ret >= 0) *got_frame = 1; return 0; } int guess_input_channel_layout(InputStream *ist) { AVCodecContext *dec = ist->dec_ctx; if (!dec->channel_layout) { char layout_name[256]; dec->channel_layout = av_get_default_channel_layout(dec->channels); if (!dec->channel_layout) return 0; av_get_channel_layout_string(layout_name, sizeof(layout_name), dec->channels, dec->channel_layout); av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream " "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name); } return 1; } static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output) { AVFrame *decoded_frame, *f; AVCodecContext *avctx = ist->dec_ctx; int i, ret, err = 0, resample_changed; if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc())) return AVERROR(ENOMEM); if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc())) return AVERROR(ENOMEM); decoded_frame = ist->decoded_frame; ret = decode(avctx, decoded_frame, got_output, pkt); if (!*got_output || ret < 0) return ret; ist->samples_decoded += decoded_frame->nb_samples; ist->frames_decoded++; /* if the decoder provides a pts, use it instead of the last packet pts. the decoder could be delaying output by a packet or more. */ if (decoded_frame->pts != AV_NOPTS_VALUE) ist->next_dts = decoded_frame->pts; else if (pkt && pkt->pts != AV_NOPTS_VALUE) { decoded_frame->pts = pkt->pts; } resample_changed = ist->resample_sample_fmt != decoded_frame->format || ist->resample_channels != avctx->channels || ist->resample_channel_layout != decoded_frame->channel_layout || ist->resample_sample_rate != decoded_frame->sample_rate; if (resample_changed) { char layout1[64], layout2[64]; if (!guess_input_channel_layout(ist)) { av_log(NULL, AV_LOG_FATAL, "Unable to find default channel " "layout for Input Stream #%d.%d\n", ist->file_index, ist->st->index); exit_program(1); } decoded_frame->channel_layout = avctx->channel_layout; av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels, ist->resample_channel_layout); av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels, decoded_frame->channel_layout); av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n", ist->file_index, ist->st->index, ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt), ist->resample_channels, layout1, decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format), avctx->channels, layout2); ist->resample_sample_fmt = decoded_frame->format; ist->resample_sample_rate = decoded_frame->sample_rate; ist->resample_channel_layout = decoded_frame->channel_layout; ist->resample_channels = avctx->channels; for (i = 0; i < nb_filtergraphs; i++) if (ist_in_filtergraph(filtergraphs[i], ist) && configure_filtergraph(filtergraphs[i]) < 0) { av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n"); exit_program(1); } } if (decoded_frame->pts != AV_NOPTS_VALUE) decoded_frame->pts = av_rescale_q(decoded_frame->pts, ist->st->time_base, (AVRational){1, avctx->sample_rate}); ist->nb_samples = decoded_frame->nb_samples; for (i = 0; i < ist->nb_filters; i++) { if (i < ist->nb_filters - 1) { f = ist->filter_frame; err = av_frame_ref(f, decoded_frame); if (err < 0) break; } else f = decoded_frame; err = av_buffersrc_add_frame(ist->filters[i]->filter, f); if (err < 0) break; } av_frame_unref(ist->filter_frame); av_frame_unref(decoded_frame); return err < 0 ? err : ret; } static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output) { AVFrame *decoded_frame, *f; int i, ret = 0, err = 0, resample_changed; if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc())) return AVERROR(ENOMEM); if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc())) return AVERROR(ENOMEM); decoded_frame = ist->decoded_frame; ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt); if (!*got_output || ret < 0) return ret; ist->frames_decoded++; if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) { err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame); if (err < 0) goto fail; } ist->hwaccel_retrieved_pix_fmt = decoded_frame->format; decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts, decoded_frame->pkt_dts); if (ist->st->sample_aspect_ratio.num) decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio; resample_changed = ist->resample_width != decoded_frame->width || ist->resample_height != decoded_frame->height || ist->resample_pix_fmt != decoded_frame->format; if (resample_changed) { av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n", ist->file_index, ist->st->index, ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt), decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format)); ret = poll_filters(); if (ret < 0 && ret != AVERROR_EOF) { char errbuf[128]; av_strerror(ret, errbuf, sizeof(errbuf)); av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf); } ist->resample_width = decoded_frame->width; ist->resample_height = decoded_frame->height; ist->resample_pix_fmt = decoded_frame->format; for (i = 0; i < nb_filtergraphs; i++) if (ist_in_filtergraph(filtergraphs[i], ist) && configure_filtergraph(filtergraphs[i]) < 0) { av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n"); exit_program(1); } } for (i = 0; i < ist->nb_filters; i++) { if (i < ist->nb_filters - 1) { f = ist->filter_frame; err = av_frame_ref(f, decoded_frame); if (err < 0) break; } else f = decoded_frame; err = av_buffersrc_add_frame(ist->filters[i]->filter, f); if (err < 0) break; } fail: av_frame_unref(ist->filter_frame); av_frame_unref(decoded_frame); return err < 0 ? err : ret; } static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output) { AVSubtitle subtitle; int i, ret = avcodec_decode_subtitle2(ist->dec_ctx, &subtitle, got_output, pkt); if (ret < 0) return ret; if (!*got_output) return ret; ist->frames_decoded++; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (!check_output_constraints(ist, ost) || !ost->encoding_needed) continue; do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts); } avsubtitle_free(&subtitle); return ret; } static int send_filter_eof(InputStream *ist) { int i, ret; for (i = 0; i < ist->nb_filters; i++) { ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL); if (ret < 0) return ret; } return 0; } /* pkt = NULL means EOF (needed to flush decoder buffers) */ static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof) { int i; int repeating = 0; AVPacket avpkt; if (ist->next_dts == AV_NOPTS_VALUE) ist->next_dts = ist->last_dts; if (!pkt) { /* EOF handling */ av_init_packet(&avpkt); avpkt.data = NULL; avpkt.size = 0; } else { avpkt = *pkt; } if (pkt && pkt->dts != AV_NOPTS_VALUE) ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q); // while we have more to decode or while the decoder did output something on EOF while (ist->decoding_needed && (!pkt || avpkt.size > 0)) { int ret = 0; int got_output = 0; if (!repeating) ist->last_dts = ist->next_dts; switch (ist->dec_ctx->codec_type) { case AVMEDIA_TYPE_AUDIO: ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output); break; case AVMEDIA_TYPE_VIDEO: ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output); if (repeating && !got_output) ; else if (pkt && pkt->duration) ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q); else if (ist->st->avg_frame_rate.num) ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), AV_TIME_BASE_Q); else if (ist->dec_ctx->framerate.num != 0) { int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame; ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q); } break; case AVMEDIA_TYPE_SUBTITLE: if (repeating) break; ret = transcode_subtitles(ist, &avpkt, &got_output); break; default: return; } if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n", ist->file_index, ist->st->index); if (exit_on_error) exit_program(1); break; } if (!got_output) break; repeating = 1; } /* after flushing, send an EOF on all the filter inputs attached to the stream */ /* except when looping we need to flush but not to send an EOF */ if (!pkt && ist->decoding_needed && !no_eof) { int ret = send_filter_eof(ist); if (ret < 0) { av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n"); exit_program(1); } } /* handle stream copy */ if (!ist->decoding_needed) { ist->last_dts = ist->next_dts; switch (ist->dec_ctx->codec_type) { case AVMEDIA_TYPE_AUDIO: ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) / ist->dec_ctx->sample_rate; break; case AVMEDIA_TYPE_VIDEO: if (ist->dec_ctx->framerate.num != 0) { int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame; ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->framerate.den * ticks) / ist->dec_ctx->framerate.num; } break; } } for (i = 0; pkt && i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (!check_output_constraints(ist, ost) || ost->encoding_needed) continue; do_streamcopy(ist, ost, pkt); } return; } static void print_sdp(void) { char sdp[16384]; int i; AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files); if (!avc) exit_program(1); for (i = 0; i < nb_output_files; i++) avc[i] = output_files[i]->ctx; av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp)); printf("SDP:\n%s\n", sdp); fflush(stdout); av_freep(&avc); } static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt) { int i; for (i = 0; hwaccels[i].name; i++) if (hwaccels[i].pix_fmt == pix_fmt) return &hwaccels[i]; return NULL; } static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts) { InputStream *ist = s->opaque; const enum AVPixelFormat *p; int ret; for (p = pix_fmts; *p != -1; p++) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p); const HWAccel *hwaccel; if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) break; hwaccel = get_hwaccel(*p); if (!hwaccel || (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) || (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id)) continue; ret = hwaccel->init(s); if (ret < 0) { if (ist->hwaccel_id == hwaccel->id) { av_log(NULL, AV_LOG_FATAL, "%s hwaccel requested for input stream #%d:%d, " "but cannot be initialized.\n", hwaccel->name, ist->file_index, ist->st->index); return AV_PIX_FMT_NONE; } continue; } ist->active_hwaccel_id = hwaccel->id; ist->hwaccel_pix_fmt = *p; break; } return *p; } static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags) { InputStream *ist = s->opaque; if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt) return ist->hwaccel_get_buffer(s, frame, flags); return avcodec_default_get_buffer2(s, frame, flags); } static int init_input_stream(int ist_index, char *error, int error_len) { int ret; InputStream *ist = input_streams[ist_index]; if (ist->decoding_needed) { AVCodec *codec = ist->dec; if (!codec) { snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d", ist->dec_ctx->codec_id, ist->file_index, ist->st->index); return AVERROR(EINVAL); } ist->dec_ctx->opaque = ist; ist->dec_ctx->get_format = get_format; ist->dec_ctx->get_buffer2 = get_buffer; ist->dec_ctx->thread_safe_callbacks = 1; av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0); if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0)) av_dict_set(&ist->decoder_opts, "threads", "auto", 0); if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) { char errbuf[128]; if (ret == AVERROR_EXPERIMENTAL) abort_codec_experimental(codec, 0); av_strerror(ret, errbuf, sizeof(errbuf)); snprintf(error, error_len, "Error while opening decoder for input stream " "#%d:%d : %s", ist->file_index, ist->st->index, errbuf); return ret; } assert_avoptions(ist->decoder_opts); } ist->last_dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0; ist->next_dts = AV_NOPTS_VALUE; init_pts_correction(&ist->pts_ctx); return 0; } static InputStream *get_input_stream(OutputStream *ost) { if (ost->source_index >= 0) return input_streams[ost->source_index]; if (ost->filter) { FilterGraph *fg = ost->filter->graph; int i; for (i = 0; i < fg->nb_inputs; i++) if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type) return fg->inputs[i]->ist; } return NULL; } static int init_output_bsfs(OutputStream *ost) { AVBSFContext *ctx; int i, ret; if (!ost->nb_bitstream_filters) return 0; ost->bsf_ctx = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_ctx)); if (!ost->bsf_ctx) return AVERROR(ENOMEM); for (i = 0; i < ost->nb_bitstream_filters; i++) { ret = av_bsf_alloc(ost->bitstream_filters[i], &ctx); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n"); return ret; } ost->bsf_ctx[i] = ctx; ret = avcodec_parameters_copy(ctx->par_in, i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar); if (ret < 0) return ret; ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base; ret = av_bsf_init(ctx); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n", ost->bitstream_filters[i]->name); return ret; } } ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1]; ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out); if (ret < 0) return ret; ost->st->time_base = ctx->time_base_out; return 0; } static int init_output_stream(OutputStream *ost, char *error, int error_len) { int ret = 0; if (ost->encoding_needed) { AVCodec *codec = ost->enc; AVCodecContext *dec = NULL; InputStream *ist; if ((ist = get_input_stream(ost))) dec = ist->dec_ctx; if (dec && dec->subtitle_header) { ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size); if (!ost->enc_ctx->subtitle_header) return AVERROR(ENOMEM); memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size); ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size; } if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0)) av_dict_set(&ost->encoder_opts, "threads", "auto", 0); if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) { ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx); if (!ost->enc_ctx->hw_frames_ctx) return AVERROR(ENOMEM); } if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) { if (ret == AVERROR_EXPERIMENTAL) abort_codec_experimental(codec, 1); snprintf(error, error_len, "Error while opening encoder for output stream #%d:%d - " "maybe incorrect parameters such as bit_rate, rate, width or height", ost->file_index, ost->index); return ret; } assert_avoptions(ost->encoder_opts); if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000) av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low." "It takes bits/s as argument, not kbits/s\n"); ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx); if (ret < 0) { av_log(NULL, AV_LOG_FATAL, "Error initializing the output stream codec context.\n"); exit_program(1); } if (ost->enc_ctx->nb_coded_side_data) { int i; ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data, sizeof(*ost->st->side_data)); if (!ost->st->side_data) return AVERROR(ENOMEM); for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) { const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i]; AVPacketSideData *sd_dst = &ost->st->side_data[i]; sd_dst->data = av_malloc(sd_src->size); if (!sd_dst->data) return AVERROR(ENOMEM); memcpy(sd_dst->data, sd_src->data, sd_src->size); sd_dst->size = sd_src->size; sd_dst->type = sd_src->type; ost->st->nb_side_data++; } } ost->st->time_base = ost->enc_ctx->time_base; } else { ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts); if (ret < 0) return ret; /* * FIXME: will the codec context used by the parser during streamcopy * This should go away with the new parser API. */ ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar); if (ret < 0) return ret; } /* initialize bitstream filters for the output stream * needs to be done here, because the codec id for streamcopy is not * known until now */ ret = init_output_bsfs(ost); if (ret < 0) return ret; return ret; } static void parse_forced_key_frames(char *kf, OutputStream *ost, AVCodecContext *avctx) { char *p; int n = 1, i; int64_t t; for (p = kf; *p; p++) if (*p == ',') n++; ost->forced_kf_count = n; ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n); if (!ost->forced_kf_pts) { av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n"); exit_program(1); } p = kf; for (i = 0; i < n; i++) { char *next = strchr(p, ','); if (next) *next++ = 0; t = parse_time_or_die("force_key_frames", p, 1); ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base); p = next; } } static void set_encoder_id(OutputFile *of, OutputStream *ost) { AVDictionaryEntry *e; uint8_t *encoder_string; int encoder_string_len; int format_flags = 0; e = av_dict_get(of->opts, "fflags", NULL, 0); if (e) { const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0); if (!o) return; av_opt_eval_flags(of->ctx, o, e->value, &format_flags); } encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2; encoder_string = av_mallocz(encoder_string_len); if (!encoder_string) exit_program(1); if (!(format_flags & AVFMT_FLAG_BITEXACT)) av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len); av_strlcat(encoder_string, ost->enc->name, encoder_string_len); av_dict_set(&ost->st->metadata, "encoder", encoder_string, AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE); } static int transcode_init(void) { int ret = 0, i, j, k; AVFormatContext *oc; OutputStream *ost; InputStream *ist; char error[1024]; int want_sdp = 1; /* init framerate emulation */ for (i = 0; i < nb_input_files; i++) { InputFile *ifile = input_files[i]; if (ifile->rate_emu) for (j = 0; j < ifile->nb_streams; j++) input_streams[j + ifile->ist_index]->start = av_gettime_relative(); } /* for each output stream, we compute the right encoding parameters */ for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; oc = output_files[ost->file_index]->ctx; ist = get_input_stream(ost); if (ost->attachment_filename) continue; if (ist) { ost->st->disposition = ist->st->disposition; } if (ost->stream_copy) { AVCodecParameters *par_dst = ost->st->codecpar; AVCodecParameters *par_src = ist->st->codecpar; AVRational sar; uint64_t extra_size; av_assert0(ist && !ost->filter); extra_size = (uint64_t)par_src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE; if (extra_size > INT_MAX) { return AVERROR(EINVAL); } /* if stream_copy is selected, no need to decode or encode */ par_dst->codec_id = par_src->codec_id; par_dst->codec_type = par_src->codec_type; if (!par_dst->codec_tag) { if (!oc->oformat->codec_tag || av_codec_get_id (oc->oformat->codec_tag, par_src->codec_tag) == par_dst->codec_id || av_codec_get_tag(oc->oformat->codec_tag, par_src->codec_id) <= 0) par_dst->codec_tag = par_src->codec_tag; } par_dst->bit_rate = par_src->bit_rate; par_dst->field_order = par_src->field_order; par_dst->chroma_location = par_src->chroma_location; par_dst->extradata = av_mallocz(extra_size); if (!par_dst->extradata) { return AVERROR(ENOMEM); } memcpy(par_dst->extradata, par_src->extradata, par_src->extradata_size); par_dst->extradata_size = par_src->extradata_size; ost->st->time_base = ist->st->time_base; if (ist->st->nb_side_data) { ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data, sizeof(*ist->st->side_data)); if (!ost->st->side_data) return AVERROR(ENOMEM); for (j = 0; j < ist->st->nb_side_data; j++) { const AVPacketSideData *sd_src = &ist->st->side_data[j]; AVPacketSideData *sd_dst = &ost->st->side_data[j]; sd_dst->data = av_malloc(sd_src->size); if (!sd_dst->data) return AVERROR(ENOMEM); memcpy(sd_dst->data, sd_src->data, sd_src->size); sd_dst->size = sd_src->size; sd_dst->type = sd_src->type; ost->st->nb_side_data++; } } ost->parser = av_parser_init(par_dst->codec_id); ost->parser_avctx = avcodec_alloc_context3(NULL); if (!ost->parser_avctx) return AVERROR(ENOMEM); switch (par_dst->codec_type) { case AVMEDIA_TYPE_AUDIO: if (audio_volume != 256) { av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n"); exit_program(1); } par_dst->channel_layout = par_src->channel_layout; par_dst->sample_rate = par_src->sample_rate; par_dst->channels = par_src->channels; par_dst->block_align = par_src->block_align; break; case AVMEDIA_TYPE_VIDEO: par_dst->format = par_src->format; par_dst->width = par_src->width; par_dst->height = par_src->height; if (ost->frame_aspect_ratio) sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255); else if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio; else sar = par_src->sample_aspect_ratio; ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar; break; case AVMEDIA_TYPE_SUBTITLE: par_dst->width = par_src->width; par_dst->height = par_src->height; break; case AVMEDIA_TYPE_DATA: case AVMEDIA_TYPE_ATTACHMENT: break; default: abort(); } } else { AVCodecContext *enc_ctx = ost->enc_ctx; AVCodecContext *dec_ctx = NULL; if (!ost->enc) { /* should only happen when a default codec is not present. */ snprintf(error, sizeof(error), "Automatic encoder selection " "failed for output stream #%d:%d. Default encoder for " "format %s is probably disabled. Please choose an " "encoder manually.\n", ost->file_index, ost->index, oc->oformat->name); ret = AVERROR(EINVAL); goto dump_format; } set_encoder_id(output_files[ost->file_index], ost); if (ist) { dec_ctx = ist->dec_ctx; enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample; enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location; } /* * We want CFR output if and only if one of those is true: * 1) user specified output framerate with -r * 2) user specified -vsync cfr * 3) output format is CFR and the user didn't force vsync to * something else than CFR * * in such a case, set ost->frame_rate */ if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && !ost->frame_rate.num && ist && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) { if (ist->framerate.num) ost->frame_rate = ist->framerate; else if (ist->st->avg_frame_rate.num) ost->frame_rate = ist->st->avg_frame_rate; else { av_log(NULL, AV_LOG_WARNING, "Constant framerate requested " "for the output stream #%d:%d, but no information " "about the input framerate is available. Falling " "back to a default value of 25fps. Use the -r option " "if you want a different framerate.\n", ost->file_index, ost->index); ost->frame_rate = (AVRational){ 25, 1 }; } if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) { int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates); ost->frame_rate = ost->enc->supported_framerates[idx]; } } #if CONFIG_LIBMFX if (qsv_transcode_init(ost)) exit_program(1); #endif if (!ost->filter && (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO || enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) { FilterGraph *fg; fg = init_simple_filtergraph(ist, ost); if (configure_filtergraph(fg)) { av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n"); exit_program(1); } } switch (enc_ctx->codec_type) { case AVMEDIA_TYPE_AUDIO: enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format; enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate; enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout; enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout); enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate }; break; case AVMEDIA_TYPE_VIDEO: enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base; enc_ctx->width = ost->filter->filter->inputs[0]->w; enc_ctx->height = ost->filter->filter->inputs[0]->h; enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio = ost->frame_aspect_ratio ? // overridden by the -aspect cli option av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) : ost->filter->filter->inputs[0]->sample_aspect_ratio; enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format; ost->st->avg_frame_rate = ost->frame_rate; if (dec_ctx && (enc_ctx->width != dec_ctx->width || enc_ctx->height != dec_ctx->height || enc_ctx->pix_fmt != dec_ctx->pix_fmt)) { enc_ctx->bits_per_raw_sample = 0; } if (ost->forced_keyframes) parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx); break; case AVMEDIA_TYPE_SUBTITLE: enc_ctx->time_base = (AVRational){1, 1000}; break; default: abort(); break; } } } /* init input streams */ for (i = 0; i < nb_input_streams; i++) if ((ret = init_input_stream(i, error, sizeof(error))) < 0) goto dump_format; /* open each encoder */ for (i = 0; i < nb_output_streams; i++) { ret = init_output_stream(output_streams[i], error, sizeof(error)); if (ret < 0) goto dump_format; } /* discard unused programs */ for (i = 0; i < nb_input_files; i++) { InputFile *ifile = input_files[i]; for (j = 0; j < ifile->ctx->nb_programs; j++) { AVProgram *p = ifile->ctx->programs[j]; int discard = AVDISCARD_ALL; for (k = 0; k < p->nb_stream_indexes; k++) if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) { discard = AVDISCARD_DEFAULT; break; } p->discard = discard; } } /* open files and write file headers */ for (i = 0; i < nb_output_files; i++) { oc = output_files[i]->ctx; oc->interrupt_callback = int_cb; if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) { char errbuf[128]; av_strerror(ret, errbuf, sizeof(errbuf)); snprintf(error, sizeof(error), "Could not write header for output file #%d " "(incorrect codec parameters ?): %s", i, errbuf); ret = AVERROR(EINVAL); goto dump_format; } assert_avoptions(output_files[i]->opts); if (strcmp(oc->oformat->name, "rtp")) { want_sdp = 0; } } dump_format: /* dump the file output parameters - cannot be done before in case of stream copy */ for (i = 0; i < nb_output_files; i++) { av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1); } /* dump the stream mapping */ av_log(NULL, AV_LOG_INFO, "Stream mapping:\n"); for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; for (j = 0; j < ist->nb_filters; j++) { if (ist->filters[j]->graph->graph_desc) { av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s", ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?", ist->filters[j]->name); if (nb_filtergraphs > 1) av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index); av_log(NULL, AV_LOG_INFO, "\n"); } } } for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost->attachment_filename) { /* an attached file */ av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n", ost->attachment_filename, ost->file_index, ost->index); continue; } if (ost->filter && ost->filter->graph->graph_desc) { /* output from a complex graph */ av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name); if (nb_filtergraphs > 1) av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index); av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index, ost->index, ost->enc ? ost->enc->name : "?"); continue; } av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d", input_streams[ost->source_index]->file_index, input_streams[ost->source_index]->st->index, ost->file_index, ost->index); if (ost->sync_ist != input_streams[ost->source_index]) av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]", ost->sync_ist->file_index, ost->sync_ist->st->index); if (ost->stream_copy) av_log(NULL, AV_LOG_INFO, " (copy)"); else { const AVCodec *in_codec = input_streams[ost->source_index]->dec; const AVCodec *out_codec = ost->enc; const char *decoder_name = "?"; const char *in_codec_name = "?"; const char *encoder_name = "?"; const char *out_codec_name = "?"; const AVCodecDescriptor *desc; if (in_codec) { decoder_name = in_codec->name; desc = avcodec_descriptor_get(in_codec->id); if (desc) in_codec_name = desc->name; if (!strcmp(decoder_name, in_codec_name)) decoder_name = "native"; } if (out_codec) { encoder_name = out_codec->name; desc = avcodec_descriptor_get(out_codec->id); if (desc) out_codec_name = desc->name; if (!strcmp(encoder_name, out_codec_name)) encoder_name = "native"; } av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))", in_codec_name, decoder_name, out_codec_name, encoder_name); } av_log(NULL, AV_LOG_INFO, "\n"); } if (ret) { av_log(NULL, AV_LOG_ERROR, "%s\n", error); return ret; } if (want_sdp) { print_sdp(); } return 0; } /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */ static int need_output(void) { int i; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; OutputFile *of = output_files[ost->file_index]; AVFormatContext *os = output_files[ost->file_index]->ctx; if (ost->finished || (os->pb && avio_tell(os->pb) >= of->limit_filesize)) continue; if (ost->frame_number >= ost->max_frames) { int j; for (j = 0; j < of->ctx->nb_streams; j++) output_streams[of->ost_index + j]->finished = 1; continue; } return 1; } return 0; } static InputFile *select_input_file(void) { InputFile *ifile = NULL; int64_t ipts_min = INT64_MAX; int i; for (i = 0; i < nb_input_streams; i++) { InputStream *ist = input_streams[i]; int64_t ipts = ist->last_dts; if (ist->discard || input_files[ist->file_index]->eagain) continue; if (!input_files[ist->file_index]->eof_reached) { if (ipts < ipts_min) { ipts_min = ipts; ifile = input_files[ist->file_index]; } } } return ifile; } #if HAVE_PTHREADS static void *input_thread(void *arg) { InputFile *f = arg; int ret = 0; while (!transcoding_finished && ret >= 0) { AVPacket pkt; ret = av_read_frame(f->ctx, &pkt); if (ret == AVERROR(EAGAIN)) { av_usleep(10000); ret = 0; continue; } else if (ret < 0) break; pthread_mutex_lock(&f->fifo_lock); while (!av_fifo_space(f->fifo)) pthread_cond_wait(&f->fifo_cond, &f->fifo_lock); av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL); pthread_mutex_unlock(&f->fifo_lock); } f->finished = 1; return NULL; } static void free_input_threads(void) { int i; if (nb_input_files == 1) return; transcoding_finished = 1; for (i = 0; i < nb_input_files; i++) { InputFile *f = input_files[i]; AVPacket pkt; if (!f->fifo || f->joined) continue; pthread_mutex_lock(&f->fifo_lock); while (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL); av_packet_unref(&pkt); } pthread_cond_signal(&f->fifo_cond); pthread_mutex_unlock(&f->fifo_lock); pthread_join(f->thread, NULL); f->joined = 1; while (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL); av_packet_unref(&pkt); } av_fifo_free(f->fifo); } } static int init_input_threads(void) { int i, ret; if (nb_input_files == 1) return 0; for (i = 0; i < nb_input_files; i++) { InputFile *f = input_files[i]; if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket)))) return AVERROR(ENOMEM); pthread_mutex_init(&f->fifo_lock, NULL); pthread_cond_init (&f->fifo_cond, NULL); if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) return AVERROR(ret); } return 0; } static int get_input_packet_mt(InputFile *f, AVPacket *pkt) { int ret = 0; pthread_mutex_lock(&f->fifo_lock); if (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL); pthread_cond_signal(&f->fifo_cond); } else { if (f->finished) ret = AVERROR_EOF; else ret = AVERROR(EAGAIN); } pthread_mutex_unlock(&f->fifo_lock); return ret; } #endif static int get_input_packet(InputFile *f, AVPacket *pkt) { if (f->rate_emu) { int i; for (i = 0; i < f->nb_streams; i++) { InputStream *ist = input_streams[f->ist_index + i]; int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE); int64_t now = av_gettime_relative() - ist->start; if (pts > now) return AVERROR(EAGAIN); } } #if HAVE_PTHREADS if (nb_input_files > 1) return get_input_packet_mt(f, pkt); #endif return av_read_frame(f->ctx, pkt); } static int got_eagain(void) { int i; for (i = 0; i < nb_input_files; i++) if (input_files[i]->eagain) return 1; return 0; } static void reset_eagain(void) { int i; for (i = 0; i < nb_input_files; i++) input_files[i]->eagain = 0; } // set duration to max(tmp, duration) in a proper time base and return duration's time_base static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base, AVRational time_base) { int ret; if (!*duration) { *duration = tmp; return tmp_time_base; } ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base); if (ret < 0) { *duration = tmp; return tmp_time_base; } return time_base; } static int seek_to_start(InputFile *ifile, AVFormatContext *is) { InputStream *ist; AVCodecContext *avctx; int i, ret, has_audio = 0; int64_t duration = 0; ret = av_seek_frame(is, -1, is->start_time, 0); if (ret < 0) return ret; for (i = 0; i < ifile->nb_streams; i++) { ist = input_streams[ifile->ist_index + i]; avctx = ist->dec_ctx; // flush decoders if (ist->decoding_needed) { process_input_packet(ist, NULL, 1); avcodec_flush_buffers(avctx); } /* duration is the length of the last frame in a stream * when audio stream is present we don't care about * last video frame length because it's not defined exactly */ if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) has_audio = 1; } for (i = 0; i < ifile->nb_streams; i++) { ist = input_streams[ifile->ist_index + i]; avctx = ist->dec_ctx; if (has_audio) { if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) { AVRational sample_rate = {1, avctx->sample_rate}; duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base); } else continue; } else { if (ist->framerate.num) { duration = av_rescale_q(1, ist->framerate, ist->st->time_base); } else if (ist->st->avg_frame_rate.num) { duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base); } else duration = 1; } if (!ifile->duration) ifile->time_base = ist->st->time_base; /* the total duration of the stream, max_pts - min_pts is * the duration of the stream without the last frame */ duration += ist->max_pts - ist->min_pts; ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base, ifile->time_base); } if (ifile->loop > 0) ifile->loop--; return ret; } /* * Read one packet from an input file and send it for * - decoding -> lavfi (audio/video) * - decoding -> encoding -> muxing (subtitles) * - muxing (streamcopy) * * Return * - 0 -- one packet was read and processed * - AVERROR(EAGAIN) -- no packets were available for selected file, * this function should be called again * - AVERROR_EOF -- this function should not be called again */ static int process_input(void) { InputFile *ifile; AVFormatContext *is; InputStream *ist; AVPacket pkt; int ret, i, j; int64_t duration; /* select the stream that we must read now */ ifile = select_input_file(); /* if none, if is finished */ if (!ifile) { if (got_eagain()) { reset_eagain(); av_usleep(10000); return AVERROR(EAGAIN); } av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n"); return AVERROR_EOF; } is = ifile->ctx; ret = get_input_packet(ifile, &pkt); if (ret == AVERROR(EAGAIN)) { ifile->eagain = 1; return ret; } if (ret < 0 && ifile->loop) { if ((ret = seek_to_start(ifile, is)) < 0) return ret; ret = get_input_packet(ifile, &pkt); } if (ret < 0) { if (ret != AVERROR_EOF) { print_error(is->filename, ret); if (exit_on_error) exit_program(1); } ifile->eof_reached = 1; for (i = 0; i < ifile->nb_streams; i++) { ist = input_streams[ifile->ist_index + i]; if (ist->decoding_needed) process_input_packet(ist, NULL, 0); /* mark all outputs that don't go through lavfi as finished */ for (j = 0; j < nb_output_streams; j++) { OutputStream *ost = output_streams[j]; if (ost->source_index == ifile->ist_index + i && (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE)) finish_output_stream(ost); } } return AVERROR(EAGAIN); } reset_eagain(); if (do_pkt_dump) { av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump, is->streams[pkt.stream_index]); } /* the following test is needed in case new streams appear dynamically in stream : we ignore them */ if (pkt.stream_index >= ifile->nb_streams) goto discard_packet; ist = input_streams[ifile->ist_index + pkt.stream_index]; ist->data_size += pkt.size; ist->nb_packets++; if (ist->discard) goto discard_packet; /* add the stream-global side data to the first packet */ if (ist->nb_packets == 1) for (i = 0; i < ist->st->nb_side_data; i++) { AVPacketSideData *src_sd = &ist->st->side_data[i]; uint8_t *dst_data; if (av_packet_get_side_data(&pkt, src_sd->type, NULL)) continue; if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX) continue; dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size); if (!dst_data) exit_program(1); memcpy(dst_data, src_sd->data, src_sd->size); } if (pkt.dts != AV_NOPTS_VALUE) pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts *= ist->ts_scale; if (pkt.dts != AV_NOPTS_VALUE) pkt.dts *= ist->ts_scale; if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO || ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) && pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && (is->iformat->flags & AVFMT_TS_DISCONT)) { int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q); int64_t delta = pkt_dts - ist->next_dts; if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) { ifile->ts_offset -= delta; av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, ifile->ts_offset); pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base); } } duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) { pkt.pts += duration; ist->max_pts = FFMAX(pkt.pts, ist->max_pts); ist->min_pts = FFMIN(pkt.pts, ist->min_pts); } if (pkt.dts != AV_NOPTS_VALUE) pkt.dts += duration; process_input_packet(ist, &pkt, 0); discard_packet: av_packet_unref(&pkt); return 0; } /* * The following code is the main loop of the file converter */ static int transcode(void) { int ret, i, need_input = 1; AVFormatContext *os; OutputStream *ost; InputStream *ist; int64_t timer_start; ret = transcode_init(); if (ret < 0) goto fail; av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n"); term_init(); timer_start = av_gettime_relative(); #if HAVE_PTHREADS if ((ret = init_input_threads()) < 0) goto fail; #endif while (!received_sigterm) { /* check if there's any stream where output is still needed */ if (!need_output()) { av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n"); break; } /* read and process one input packet if needed */ if (need_input) { ret = process_input(); if (ret == AVERROR_EOF) need_input = 0; } ret = poll_filters(); if (ret < 0 && ret != AVERROR_EOF) { char errbuf[128]; av_strerror(ret, errbuf, sizeof(errbuf)); av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf); break; } /* dump report by using the output first video and audio streams */ print_report(0, timer_start); } #if HAVE_PTHREADS free_input_threads(); #endif /* at the end of stream, we must flush the decoder buffers */ for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) { process_input_packet(ist, NULL, 0); } } poll_filters(); flush_encoders(); term_exit(); /* write the trailer if needed and close file */ for (i = 0; i < nb_output_files; i++) { os = output_files[i]->ctx; av_write_trailer(os); } /* dump report by using the first video and audio streams */ print_report(1, timer_start); /* close each encoder */ for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost->encoding_needed) { av_freep(&ost->enc_ctx->stats_in); } } /* close each decoder */ for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; if (ist->decoding_needed) { avcodec_close(ist->dec_ctx); if (ist->hwaccel_uninit) ist->hwaccel_uninit(ist->dec_ctx); } } av_buffer_unref(&hw_device_ctx); /* finished ! */ ret = 0; fail: #if HAVE_PTHREADS free_input_threads(); #endif if (output_streams) { for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost) { if (ost->logfile) { fclose(ost->logfile); ost->logfile = NULL; } av_free(ost->forced_kf_pts); av_dict_free(&ost->encoder_opts); av_dict_free(&ost->resample_opts); } } } return ret; } static int64_t getutime(void) { #if HAVE_GETRUSAGE struct rusage rusage; getrusage(RUSAGE_SELF, &rusage); return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec; #elif HAVE_GETPROCESSTIMES HANDLE proc; FILETIME c, e, k, u; proc = GetCurrentProcess(); GetProcessTimes(proc, &c, &e, &k, &u); return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10; #else return av_gettime_relative(); #endif } static int64_t getmaxrss(void) { #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS struct rusage rusage; getrusage(RUSAGE_SELF, &rusage); return (int64_t)rusage.ru_maxrss * 1024; #elif HAVE_GETPROCESSMEMORYINFO HANDLE proc; PROCESS_MEMORY_COUNTERS memcounters; proc = GetCurrentProcess(); memcounters.cb = sizeof(memcounters); GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters)); return memcounters.PeakPagefileUsage; #else return 0; #endif } int main(int argc, char **argv) { int ret; int64_t ti; register_exit(avconv_cleanup); av_log_set_flags(AV_LOG_SKIP_REPEATED); parse_loglevel(argc, argv, options); avcodec_register_all(); #if CONFIG_AVDEVICE avdevice_register_all(); #endif avfilter_register_all(); av_register_all(); avformat_network_init(); show_banner(); /* parse options and open all input/output files */ ret = avconv_parse_options(argc, argv); if (ret < 0) exit_program(1); if (nb_output_files <= 0 && nb_input_files == 0) { show_usage(); av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name); exit_program(1); } /* file converter / grab */ if (nb_output_files <= 0) { fprintf(stderr, "At least one output file must be specified\n"); exit_program(1); } ti = getutime(); if (transcode() < 0) exit_program(1); ti = getutime() - ti; if (do_benchmark) { int maxrss = getmaxrss() / 1024; printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss); } exit_program(0); return 0; }