+/* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
+
/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
#include "transcoder.h"
#include "job.h"
#include "filter.h"
-#include "options.h"
#include "exceptions.h"
#include "image.h"
#include "util.h"
#include "ffmpeg_decoder.h"
#include "filter_graph.h"
#include "subtitle.h"
+#include "audio_buffers.h"
#include "i18n.h"
using boost::dynamic_pointer_cast;
using libdcp::Size;
-FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, DecodeOptions o)
- : Decoder (f, o)
- , VideoDecoder (f, o)
- , AudioDecoder (f, o)
+boost::mutex FFmpegDecoder::_mutex;
+
+FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<const FFmpegContent> c, bool video, bool audio, bool subtitles)
+ : Decoder (f)
+ , VideoDecoder (f)
+ , AudioDecoder (f, c)
+ , _ffmpeg_content (c)
, _format_context (0)
, _video_stream (-1)
, _frame (0)
, _audio_codec (0)
, _subtitle_codec_context (0)
, _subtitle_codec (0)
+ , _decode_video (video)
+ , _decode_audio (audio)
+ , _decode_subtitles (subtitles)
{
setup_general ();
setup_video ();
FFmpegDecoder::~FFmpegDecoder ()
{
+ boost::mutex::scoped_lock lm (_mutex);
+
if (_audio_codec_context) {
avcodec_close (_audio_codec_context);
}
-
+
if (_video_codec_context) {
avcodec_close (_video_codec_context);
}
{
av_register_all ();
- if (avformat_open_input (&_format_context, _film->content_path().c_str(), 0, 0) < 0) {
- throw OpenFileError (_film->content_path ());
+ if (avformat_open_input (&_format_context, _ffmpeg_content->file().string().c_str(), 0, 0) < 0) {
+ throw OpenFileError (_ffmpeg_content->file().string ());
}
if (avformat_find_stream_info (_format_context, 0) < 0) {
throw DecodeError (_("could not find stream information"));
}
- /* Find video, audio and subtitle streams and choose the first of each */
+ /* Find video, audio and subtitle streams */
for (uint32_t i = 0; i < _format_context->nb_streams; ++i) {
AVStream* s = _format_context->streams[i];
}
_audio_streams.push_back (
- shared_ptr<AudioStream> (
- new FFmpegAudioStream (stream_name (s), i, s->codec->sample_rate, s->codec->channel_layout)
- )
+ FFmpegAudioStream (stream_name (s), i, s->codec->sample_rate, s->codec->channels)
);
-
+
} else if (s->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
- _subtitle_streams.push_back (
- shared_ptr<SubtitleStream> (
- new SubtitleStream (stream_name (s), i)
- )
- );
+ _subtitle_streams.push_back (FFmpegSubtitleStream (stream_name (s), i));
}
}
void
FFmpegDecoder::setup_video ()
{
+ boost::mutex::scoped_lock lm (_mutex);
+
_video_codec_context = _format_context->streams[_video_stream]->codec;
_video_codec = avcodec_find_decoder (_video_codec_context->codec_id);
void
FFmpegDecoder::setup_audio ()
{
- if (!_audio_stream) {
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (!_ffmpeg_content->audio_stream ()) {
return;
}
- shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
- assert (ffa);
-
- _audio_codec_context = _format_context->streams[ffa->id()]->codec;
+ _audio_codec_context = _format_context->streams[_ffmpeg_content->audio_stream()->id]->codec;
_audio_codec = avcodec_find_decoder (_audio_codec_context->codec_id);
if (_audio_codec == 0) {
void
FFmpegDecoder::setup_subtitle ()
{
- if (!_subtitle_stream || _subtitle_stream->id() >= int (_format_context->nb_streams)) {
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (!_ffmpeg_content->subtitle_stream() || _ffmpeg_content->subtitle_stream()->id >= int (_format_context->nb_streams)) {
return;
}
- _subtitle_codec_context = _format_context->streams[_subtitle_stream->id()]->codec;
+ _subtitle_codec_context = _format_context->streams[_ffmpeg_content->subtitle_stream()->id]->codec;
_subtitle_codec = avcodec_find_decoder (_subtitle_codec_context->codec_id);
if (_subtitle_codec == 0) {
FFmpegDecoder::pass ()
{
int r = av_read_frame (_format_context, &_packet);
-
+
if (r < 0) {
if (r != AVERROR_EOF) {
/* Maybe we should fail here, but for now we'll just finish off instead */
/* XXX: should we reset _packet.data and size after each *_decode_* call? */
- int frame_finished;
-
- if (_opt.decode_video) {
- while (avcodec_decode_video2 (_video_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
- filter_and_emit_video ();
- }
+ if (_decode_video) {
+ while (decode_video_packet ());
}
-
- if (_audio_stream && _opt.decode_audio) {
+
+ if (_ffmpeg_content->audio_stream() && _decode_audio) {
decode_audio_packet ();
}
avcodec_get_frame_defaults (_frame);
- shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
-
- if (_packet.stream_index == _video_stream && _opt.decode_video) {
-
- int frame_finished;
- int const r = avcodec_decode_video2 (_video_codec_context, _frame, &frame_finished, &_packet);
- if (r >= 0 && frame_finished) {
-
- if (r != _packet.size) {
- _film->log()->log (String::compose (N_("Used only %1 bytes of %2 in packet"), r, _packet.size));
- }
-
- filter_and_emit_video ();
- }
-
- } else if (ffa && _packet.stream_index == ffa->id() && _opt.decode_audio) {
+ if (_packet.stream_index == _video_stream && _decode_video) {
+ decode_video_packet ();
+ } else if (_ffmpeg_content->audio_stream() && _packet.stream_index == _ffmpeg_content->audio_stream()->id && _decode_audio) {
decode_audio_packet ();
- } else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->id() && _opt.decode_subtitles) {
+ } else if (_ffmpeg_content->subtitle_stream() && _packet.stream_index == _ffmpeg_content->subtitle_stream()->id && _decode_subtitles) {
int got_subtitle;
AVSubtitle sub;
shared_ptr<AudioBuffers>
FFmpegDecoder::deinterleave_audio (uint8_t** data, int size)
{
- assert (_film->audio_channels());
+ assert (_ffmpeg_content->audio_channels());
assert (bytes_per_audio_sample());
- shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
- assert (ffa);
-
/* Deinterleave and convert to float */
- assert ((size % (bytes_per_audio_sample() * ffa->channels())) == 0);
+ assert ((size % (bytes_per_audio_sample() * _ffmpeg_content->audio_channels())) == 0);
int const total_samples = size / bytes_per_audio_sample();
- int const frames = total_samples / _film->audio_channels();
- shared_ptr<AudioBuffers> audio (new AudioBuffers (ffa->channels(), frames));
+ int const frames = total_samples / _ffmpeg_content->audio_channels();
+ shared_ptr<AudioBuffers> audio (new AudioBuffers (_ffmpeg_content->audio_channels(), frames));
switch (audio_sample_format()) {
case AV_SAMPLE_FMT_S16:
audio->data(channel)[sample] = float(*p++) / (1 << 15);
++channel;
- if (channel == _film->audio_channels()) {
+ if (channel == _ffmpeg_content->audio_channels()) {
channel = 0;
++sample;
}
case AV_SAMPLE_FMT_S16P:
{
int16_t** p = reinterpret_cast<int16_t **> (data);
- for (int i = 0; i < _film->audio_channels(); ++i) {
+ for (int i = 0; i < _ffmpeg_content->audio_channels(); ++i) {
for (int j = 0; j < frames; ++j) {
audio->data(i)[j] = static_cast<float>(p[i][j]) / (1 << 15);
}
audio->data(channel)[sample] = static_cast<float>(*p++) / (1 << 31);
++channel;
- if (channel == _film->audio_channels()) {
+ if (channel == _ffmpeg_content->audio_channels()) {
channel = 0;
++sample;
}
audio->data(channel)[sample] = *p++;
++channel;
- if (channel == _film->audio_channels()) {
+ if (channel == _ffmpeg_content->audio_channels()) {
channel = 0;
++sample;
}
case AV_SAMPLE_FMT_FLTP:
{
float** p = reinterpret_cast<float**> (data);
- for (int i = 0; i < _film->audio_channels(); ++i) {
+ for (int i = 0; i < _ffmpeg_content->audio_channels(); ++i) {
memcpy (audio->data(i), p[i], frames * sizeof(float));
}
}
}
float
-FFmpegDecoder::frames_per_second () const
+FFmpegDecoder::video_frame_rate () const
{
AVStream* s = _format_context->streams[_video_stream];
FFmpegDecoder::stream_name (AVStream* s) const
{
stringstream n;
-
- AVDictionaryEntry const * lang = av_dict_get (s->metadata, N_("language"), 0, 0);
- if (lang) {
- n << lang->value;
- }
-
- AVDictionaryEntry const * title = av_dict_get (s->metadata, N_("title"), 0, 0);
- if (title) {
- if (!n.str().empty()) {
- n << N_(" ");
+
+ if (s->metadata) {
+ AVDictionaryEntry const * lang = av_dict_get (s->metadata, N_("language"), 0, 0);
+ if (lang) {
+ n << lang->value;
+ }
+
+ AVDictionaryEntry const * title = av_dict_get (s->metadata, N_("title"), 0, 0);
+ if (title) {
+ if (!n.str().empty()) {
+ n << N_(" ");
+ }
+ n << title->value;
}
- n << title->value;
}
if (n.str().empty()) {
return av_get_bytes_per_sample (audio_sample_format ());
}
-void
-FFmpegDecoder::set_audio_stream (shared_ptr<AudioStream> s)
-{
- AudioDecoder::set_audio_stream (s);
- setup_audio ();
-}
-
-void
-FFmpegDecoder::set_subtitle_stream (shared_ptr<SubtitleStream> s)
-{
- VideoDecoder::set_subtitle_stream (s);
- setup_subtitle ();
- OutputChanged ();
-}
-
-void
-FFmpegDecoder::filter_and_emit_video ()
+bool
+FFmpegDecoder::seek (double p)
{
- boost::mutex::scoped_lock lm (_filter_graphs_mutex);
-
- shared_ptr<FilterGraph> graph;
-
- list<shared_ptr<FilterGraph> >::iterator i = _filter_graphs.begin();
- while (i != _filter_graphs.end() && !(*i)->can_process (libdcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format)) {
- ++i;
- }
-
- if (i == _filter_graphs.end ()) {
- graph.reset (new FilterGraph (_film, this, libdcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format));
- _filter_graphs.push_back (graph);
- _film->log()->log (String::compose (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format));
- } else {
- graph = *i;
- }
-
- list<shared_ptr<Image> > images = graph->process (_frame);
-
- for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
- int64_t const bet = av_frame_get_best_effort_timestamp (_frame);
- if (bet != AV_NOPTS_VALUE) {
- emit_video (*i, false, bet * av_q2d (_format_context->streams[_video_stream]->time_base));
- } else {
- _film->log()->log ("Dropping frame without PTS");
- }
- }
+ return do_seek (p, false, false);
}
bool
-FFmpegDecoder::seek (double p)
+FFmpegDecoder::seek_back ()
{
- return do_seek (p, false);
+ if (last_content_time() < 2.5) {
+ return true;
+ }
+
+ return do_seek (last_content_time() - 2.5 / video_frame_rate(), true, true);
}
bool
-FFmpegDecoder::seek_to_last ()
+FFmpegDecoder::seek_forward ()
{
- /* This AVSEEK_FLAG_BACKWARD in do_seek is a bit of a hack; without it, if we ask for a seek to the same place as last time
- (used when we change decoder parameters and want to re-fetch the frame) we end up going forwards rather than
- staying in the same place.
- */
- return do_seek (last_source_time(), true);
+ if (last_content_time() >= (video_length() - video_frame_rate())) {
+ return true;
+ }
+
+ return do_seek (last_content_time() - 0.5 / video_frame_rate(), true, true);
}
bool
-FFmpegDecoder::do_seek (double p, bool backwards)
+FFmpegDecoder::do_seek (double p, bool backwards, bool accurate)
{
int64_t const vt = p / av_q2d (_format_context->streams[_video_stream]->time_base);
int const r = av_seek_frame (_format_context, _video_stream, vt, backwards ? AVSEEK_FLAG_BACKWARD : 0);
-
+
avcodec_flush_buffers (_video_codec_context);
if (_subtitle_codec_context) {
avcodec_flush_buffers (_subtitle_codec_context);
}
-
- return r < 0;
-}
-shared_ptr<FFmpegAudioStream>
-FFmpegAudioStream::create (string t, optional<int> v)
-{
- if (!v) {
- /* version < 1; no type in the string, and there's only FFmpeg streams anyway */
- return shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (t, v));
- }
-
- stringstream s (t);
- string type;
- s >> type;
- if (type != N_("ffmpeg")) {
- return shared_ptr<FFmpegAudioStream> ();
- }
-
- return shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (t, v));
-}
-
-FFmpegAudioStream::FFmpegAudioStream (string t, optional<int> version)
-{
- stringstream n (t);
-
- int name_index = 4;
- if (!version) {
- name_index = 2;
- int channels;
- n >> _id >> channels;
- _channel_layout = av_get_default_channel_layout (channels);
- _sample_rate = 0;
- } else {
- string type;
- /* Current (marked version 1) */
- n >> type >> _id >> _sample_rate >> _channel_layout;
- assert (type == N_("ffmpeg"));
- }
-
- for (int i = 0; i < name_index; ++i) {
- size_t const s = t.find (' ');
- if (s != string::npos) {
- t = t.substr (s + 1);
+ if (accurate) {
+ while (1) {
+ int r = av_read_frame (_format_context, &_packet);
+ if (r < 0) {
+ return true;
+ }
+
+ avcodec_get_frame_defaults (_frame);
+
+ if (_packet.stream_index == _video_stream) {
+ int finished = 0;
+ int const r = avcodec_decode_video2 (_video_codec_context, _frame, &finished, &_packet);
+ if (r >= 0 && finished) {
+ int64_t const bet = av_frame_get_best_effort_timestamp (_frame);
+ if (bet > vt) {
+ break;
+ }
+ }
+ }
+
+ av_free_packet (&_packet);
}
}
-
- _name = t;
-}
-
-string
-FFmpegAudioStream::to_string () const
-{
- return String::compose (N_("ffmpeg %1 %2 %3 %4"), _id, _sample_rate, _channel_layout, _name);
+
+ return r < 0;
}
void
boost::mutex::scoped_lock lm (_filter_graphs_mutex);
_filter_graphs.clear ();
}
- OutputChanged ();
break;
default:
}
/** @return Length (in video frames) according to our content's header */
-SourceFrame
-FFmpegDecoder::length () const
+ContentVideoFrame
+FFmpegDecoder::video_length () const
{
- return (double(_format_context->duration) / AV_TIME_BASE) * frames_per_second();
+ return (double(_format_context->duration) / AV_TIME_BASE) * video_frame_rate();
}
void
FFmpegDecoder::decode_audio_packet ()
{
- shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
- assert (ffa);
-
/* Audio packets can contain multiple frames, so we may have to call avcodec_decode_audio4
several times.
*/
0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
);
- assert (_audio_codec_context->channels == _film->audio_channels());
+ assert (_audio_codec_context->channels == _ffmpeg_content->audio_channels());
Audio (deinterleave_audio (_frame->data, data_size), source_pts_seconds);
}
}
}
}
+
+bool
+FFmpegDecoder::decode_video_packet ()
+{
+ int frame_finished;
+ if (avcodec_decode_video2 (_video_codec_context, _frame, &frame_finished, &_packet) < 0 || !frame_finished) {
+ return false;
+ }
+
+ boost::mutex::scoped_lock lm (_filter_graphs_mutex);
+
+ shared_ptr<FilterGraph> graph;
+
+ list<shared_ptr<FilterGraph> >::iterator i = _filter_graphs.begin();
+ while (i != _filter_graphs.end() && !(*i)->can_process (libdcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format)) {
+ ++i;
+ }
+
+ if (i == _filter_graphs.end ()) {
+ graph.reset (new FilterGraph (_film, this, libdcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format));
+ _filter_graphs.push_back (graph);
+ _film->log()->log (String::compose (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format));
+ } else {
+ graph = *i;
+ }
+
+ list<shared_ptr<Image> > images = graph->process (_frame);
+
+ for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
+ int64_t const bet = av_frame_get_best_effort_timestamp (_frame);
+ if (bet != AV_NOPTS_VALUE) {
+ /* XXX: may need to insert extra frames / remove frames here ...
+ (as per old Matcher)
+ */
+ emit_video (*i, false, bet * av_q2d (_format_context->streams[_video_stream]->time_base) * TIME_HZ);
+ } else {
+ _film->log()->log ("Dropping frame without PTS");
+ }
+ }
+
+ return true;
+}
projects / dcpomatic.git / blobdiff