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FFmpeg/avconv.c
Diego Biurrun e46a6fb773 avconv: Check that muxing_queue exists before reading from it 
This avoids a segfault on nonexisting codec names.
2016-07-27 10:59:48 +02:00

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/*
* 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 <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>
#include <stdint.h>
#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 <sys/time.h>
#include <sys/types.h>
#include <sys/resource.h>
#elif HAVE_GETPROCESSTIMES
#include <windows.h>
#endif
#if HAVE_GETPROCESSMEMORYINFO
#include <windows.h>
#include <psapi.h>
#endif
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#if HAVE_PTHREADS
#include <pthread.h>
#endif
#include <time.h>
#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;
static int want_sdp = 1;
#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++) {
while (av_fifo_size(fg->inputs[j]->frame_queue)) {
AVFrame *frame;
av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
sizeof(frame), NULL);
av_frame_free(&frame);
}
av_fifo_free(fg->inputs[j]->frame_queue);
av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
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]->formats);
av_freep(&fg->outputs[j]->channel_layouts);
av_freep(&fg->outputs[j]->sample_rates);
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);
if (ost->muxing_queue) {
while (av_fifo_size(ost->muxing_queue)) {
AVPacket pkt;
av_log(NULL, AV_LOG_INFO, "after av_fifo_size()\n");
av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
av_packet_unref(&pkt);
}
av_fifo_free(ost->muxing_queue);
}
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(OutputFile *of, AVPacket *pkt, OutputStream *ost)
{
AVFormatContext *s = of->ctx;
AVStream *st = ost->st;
int ret;
if (!of->header_written) {
AVPacket tmp_pkt;
/* the muxer is not initialized yet, buffer the packet */
if (!av_fifo_space(ost->muxing_queue)) {
int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
ost->max_muxing_queue_size);
if (new_size <= av_fifo_size(ost->muxing_queue)) {
av_log(NULL, AV_LOG_ERROR,
"Too many packets buffered for output stream %d:%d.\n",
ost->file_index, ost->st->index);
exit_program(1);
}
ret = av_fifo_realloc2(ost->muxing_queue, new_size);
if (ret < 0)
exit_program(1);
}
av_packet_move_ref(&tmp_pkt, pkt);
av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
return;
}
/*
* 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->mux_timebase);
}
}
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;
av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
ret = av_interleaved_write_frame(s, pkt);
if (ret < 0) {
print_error("av_interleaved_write_frame()", ret);
exit_program(1);
}
}
static void output_packet(OutputFile *of, 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(of, pkt, ost);
}
} else
write_packet(of, 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(OutputFile *of, 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;
output_packet(of, &pkt, ost);
}
return;
error:
av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
exit_program(1);
}
static void do_subtitle_out(OutputFile *of,
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->mux_timebase);
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(of, &pkt, ost);
}
}
static void do_video_out(OutputFile *of,
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 = (of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
(of->ctx->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;
output_packet(of, &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
}
}
static int init_output_stream(OutputStream *ost, char *error, int error_len);
/*
* 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->initialized) {
char error[1024];
ret = init_output_stream(ost, error, sizeof(error));
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
ost->file_index, ost->index, error);
exit_program(1);
}
}
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, 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, 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 ||
!output_streams[i]->filter->graph->graph)
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->mux_timebase);
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;
OutputFile *of = output_files[ost->file_index];
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;
}
output_packet(of, &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->mux_timebase);
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->mux_timebase) - 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->mux_timebase);
else
opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
opkt.dts -= ost_tb_start_time;
opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
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, &opkt, ost);
}
static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
{
FilterGraph *fg = ifilter->graph;
int need_reinit, ret, i;
/* determine if the parameters for this input changed */
need_reinit = ifilter->format != frame->format;
if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
(ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
need_reinit = 1;
switch (ifilter->ist->st->codecpar->codec_type) {
case AVMEDIA_TYPE_AUDIO:
need_reinit |= ifilter->sample_rate != frame->sample_rate ||
ifilter->channel_layout != frame->channel_layout;
break;
case AVMEDIA_TYPE_VIDEO:
need_reinit |= ifilter->width != frame->width ||
ifilter->height != frame->height;
break;
}
if (need_reinit) {
ret = ifilter_parameters_from_frame(ifilter, frame);
if (ret < 0)
return ret;
}
/* (re)init the graph if possible, otherwise buffer the frame and return */
if (need_reinit || !fg->graph) {
for (i = 0; i < fg->nb_inputs; i++) {
if (fg->inputs[i]->format < 0) {
AVFrame *tmp = av_frame_clone(frame);
if (!tmp)
return AVERROR(ENOMEM);
av_frame_unref(frame);
if (!av_fifo_space(ifilter->frame_queue)) {
ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
if (ret < 0)
return ret;
}
av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
return 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);
return ret;
}
ret = configure_filtergraph(fg);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
return ret;
}
}
ret = av_buffersrc_add_frame(ifilter->filter, frame);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error while filtering\n");
return ret;
}
return 0;
}
static int ifilter_send_eof(InputFilter *ifilter)
{
int i, j, ret;
ifilter->eof = 1;
if (ifilter->filter) {
ret = av_buffersrc_add_frame(ifilter->filter, NULL);
if (ret < 0)
return ret;
} else {
// the filtergraph was never configured
FilterGraph *fg = ifilter->graph;
for (i = 0; i < fg->nb_inputs; i++)
if (!fg->inputs[i]->eof)
break;
if (i == fg->nb_inputs) {
// All the input streams have finished without the filtergraph
// ever being configured.
// Mark the output streams as finished.
for (j = 0; j < fg->nb_outputs; j++)
finish_output_stream(fg->outputs[j]->ost);
}
}
return 0;
}
// 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;
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;
}
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 = ifilter_send_frame(ist->filters[i], 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;
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->pts,
decoded_frame->pkt_dts);
if (ist->framerate.num)
decoded_frame->pts = ist->cfr_next_pts++;
if (ist->st->sample_aspect_ratio.num)
decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
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 = ifilter_send_frame(ist->filters[i], 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], 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 = ifilter_send_eof(ist->filters[i]);
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;
for (i = 0; i < nb_output_files; i++) {
if (!output_files[i]->header_written)
return;
}
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;
}
if (ist->hw_frames_ctx) {
s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
if (!s->hw_frames_ctx)
return AV_PIX_FMT_NONE;
}
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;
}
/* open the muxer when all the streams are initialized */
static int check_init_output_file(OutputFile *of, int file_index)
{
int ret, i;
for (i = 0; i < of->ctx->nb_streams; i++) {
OutputStream *ost = output_streams[of->ost_index + i];
if (!ost->initialized)
return 0;
}
of->ctx->interrupt_callback = int_cb;
ret = avformat_write_header(of->ctx, &of->opts);
if (ret < 0) {
char errbuf[128];
av_strerror(ret, errbuf, sizeof(errbuf));
av_log(NULL, AV_LOG_ERROR,
"Could not write header for output file #%d "
"(incorrect codec parameters ?): %s",
file_index, errbuf);
return ret;
}
assert_avoptions(of->opts);
of->header_written = 1;
av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
if (want_sdp)
print_sdp();
/* flush the muxing queues */
for (i = 0; i < of->ctx->nb_streams; i++) {
OutputStream *ost = output_streams[of->ost_index + i];
while (av_fifo_size(ost->muxing_queue)) {
AVPacket pkt;
av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
write_packet(of, &pkt, ost);
}
}
return 0;
}
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_streamcopy(OutputStream *ost)
{
OutputFile *of = output_files[ost->file_index];
InputStream *ist = get_input_stream(ost);
AVCodecParameters *par_dst = ost->st->codecpar;
AVCodecParameters *par_src = ist->st->codecpar;
AVRational sar;
uint32_t codec_tag = par_dst->codec_tag;
int i, ret;
if (!codec_tag) {
if (!of->ctx->oformat->codec_tag ||
av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
av_codec_get_tag(of->ctx->oformat->codec_tag, par_src->codec_id) <= 0)
codec_tag = par_src->codec_tag;
}
ret = avcodec_parameters_copy(par_dst, par_src);
if (ret < 0)
return ret;
par_dst->codec_tag = codec_tag;
ost->st->disposition = ist->st->disposition;
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 (i = 0; i < ist->st->nb_side_data; i++) {
const AVPacketSideData *sd_src = &ist->st->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->parser = av_parser_init(par_dst->codec_id);
ost->parser_avctx = avcodec_alloc_context3(NULL);
if (!ost->parser_avctx)
return AVERROR(ENOMEM);
if (par_dst->codec_type == AVMEDIA_TYPE_VIDEO) {
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;
}
return 0;
}
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 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 int init_output_stream_encode(OutputStream *ost)
{
InputStream *ist = get_input_stream(ost);
AVCodecContext *enc_ctx = ost->enc_ctx;
AVCodecContext *dec_ctx = NULL;
set_encoder_id(output_files[ost->file_index], ost);
if (ist) {
ost->st->disposition = ist->st->disposition;
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;
}
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;
}
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;
ret = init_output_stream_encode(ost);
if (ret < 0)
return ret;
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 if (ost->stream_copy) {
ret = init_output_stream_streamcopy(ost);
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;
ost->mux_timebase = ost->st->time_base;
ost->initialized = 1;
ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
if (ret < 0)
return ret;
return ret;
}
static int transcode_init(void)
{
int ret = 0, i, j, k;
OutputStream *ost;
InputStream *ist;
char error[1024];
/* 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();
}
/* 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++) {
// skip streams fed from filtergraphs until we have a frame for them
if (output_streams[i]->filter)
continue;
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;
}
}
dump_format:
/* 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 (!filtergraph_is_simple(ist->filters[j]->graph)) {
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 && !filtergraph_is_simple(ost->filter->graph)) {
/* 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;
}
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;
if (!output_files[i]->header_written) {
av_log(NULL, AV_LOG_ERROR,
"Nothing was written into output file %d (%s), because "
"at least one of its streams received no packets.\n",
i, os->filename);
continue;
}
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 i, 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);
}
for (i = 0; i < nb_output_files; i++) {
if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
want_sdp = 0;
}
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;
}
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