using boost::dynamic_pointer_cast;
using libdcp::Size;
-FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, DecodeOptions o)
+FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<FFmpegContent> c, DecodeOptions o)
: Decoder (f, o)
- , VideoDecoder (f, o)
- , AudioDecoder (f, o)
+ , VideoDecoder (f, c, o)
+ , AudioDecoder (f, c, o)
+ , _ffmpeg_content (c)
, _format_context (0)
, _video_stream (-1)
, _frame (0)
{
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) {
}
_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->channel_layout)
);
} 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_audio ()
{
- if (!_audio_stream) {
+ 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)) {
+ 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) {
}
}
- if (_audio_stream && _opt.decode_audio) {
- while (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
- int const data_size = av_samples_get_buffer_size (
- 0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
- );
-
- assert (_audio_codec_context->channels == _film->audio_channels());
- Audio (deinterleave_audio (_frame->data, data_size));
- }
+ if (_ffmpeg_content->audio_stream() && _opt.decode_audio) {
+ decode_audio_packet ();
}
return true;
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;
}
}
- } else if (ffa && _packet.stream_index == ffa->id() && _opt.decode_audio) {
-
- int frame_finished;
- if (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
-
- /* Where we are in the source, in seconds */
- double const source_pts_seconds = av_q2d (_format_context->streams[_packet.stream_index]->time_base)
- * av_frame_get_best_effort_timestamp(_frame);
-
- /* We only decode audio if we've had our first video packet through, and if it
- was before this packet. Until then audio is thrown away.
- */
-
- if ((_first_video && _first_video.get() <= source_pts_seconds) || !_opt.decode_video) {
-
- if (!_first_audio && _opt.decode_video) {
- _first_audio = source_pts_seconds;
-
- /* This is our first audio frame, and if we've arrived here we must have had our
- first video frame. Push some silence to make up any gap between our first
- video frame and our first audio.
- */
-
- /* frames of silence that we must push */
- int const s = rint ((_first_audio.get() - _first_video.get()) * ffa->sample_rate ());
-
- _film->log()->log (
- String::compose (
- N_("First video at %1, first audio at %2, pushing %3 audio frames of silence for %4 channels (%5 bytes per sample)"),
- _first_video.get(), _first_audio.get(), s, ffa->channels(), bytes_per_audio_sample()
- )
- );
-
- if (s) {
- shared_ptr<AudioBuffers> audio (new AudioBuffers (ffa->channels(), s));
- audio->make_silent ();
- Audio (audio);
- }
- }
-
- int const data_size = av_samples_get_buffer_size (
- 0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
- );
-
- assert (_audio_codec_context->channels == _film->audio_channels());
- Audio (deinterleave_audio (_frame->data, data_size));
- }
- }
-
- } else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->id() && _opt.decode_subtitles && _first_video) {
+ } else if (_ffmpeg_content->audio_stream() && _packet.stream_index == _ffmpeg_content->audio_stream()->id && _opt.decode_audio) {
+ decode_audio_packet ();
+ } else if (_ffmpeg_content->subtitle_stream() && _packet.stream_index == _ffmpeg_content->subtitle_stream()->id && _opt.decode_subtitles && _first_video) {
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));
}
}
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 (AVFrame* frame)
{
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);
- }
- }
-
- _name = t;
-}
-
-string
-FFmpegAudioStream::to_string () const
-{
- return String::compose (N_("ffmpeg %1 %2 %3 %4"), _id, _sample_rate, _channel_layout, _name);
-}
-
void
FFmpegDecoder::out_with_sync ()
{
}
/** @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 av_frame_get_best_effort_timestamp(_frame) * av_q2d (_format_context->streams[_video_stream]->time_base);
}
+void
+FFmpegDecoder::decode_audio_packet ()
+{
+ /* Audio packets can contain multiple frames, so we may have to call avcodec_decode_audio4
+ several times.
+ */
+
+ AVPacket copy_packet = _packet;
+
+ while (copy_packet.size > 0) {
+
+ int frame_finished;
+ int const decode_result = avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, ©_packet);
+ if (decode_result >= 0 && frame_finished) {
+
+ /* Where we are in the source, in seconds */
+ double const source_pts_seconds = av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
+ * av_frame_get_best_effort_timestamp(_frame);
+
+ /* We only decode audio if we've had our first video packet through, and if it
+ was before this packet. Until then audio is thrown away.
+ */
+
+ if ((_first_video && _first_video.get() <= source_pts_seconds) || !_opt.decode_video) {
+
+ if (!_first_audio && _opt.decode_video) {
+ _first_audio = source_pts_seconds;
+
+ /* This is our first audio frame, and if we've arrived here we must have had our
+ first video frame. Push some silence to make up any gap between our first
+ video frame and our first audio.
+ */
+
+ /* frames of silence that we must push */
+ int const s = rint ((_first_audio.get() - _first_video.get()) * _ffmpeg_content->audio_frame_rate ());
+
+ _film->log()->log (
+ String::compose (
+ N_("First video at %1, first audio at %2, pushing %3 audio frames of silence for %4 channels (%5 bytes per sample)"),
+ _first_video.get(), _first_audio.get(), s, _ffmpeg_content->audio_channels(), bytes_per_audio_sample()
+ )
+ );
+
+ if (s) {
+ shared_ptr<AudioBuffers> audio (new AudioBuffers (_ffmpeg_content->audio_channels(), s));
+ audio->make_silent ();
+ Audio (audio);
+ }
+ }
+
+ int const data_size = av_samples_get_buffer_size (
+ 0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
+ );
+
+ assert (_audio_codec_context->channels == _ffmpeg_content->audio_channels());
+ Audio (deinterleave_audio (_frame->data, data_size));
+ }
+ }
+
+ if (decode_result >= 0) {
+ copy_packet.data += decode_result;
+ copy_packet.size -= decode_result;
+ }
+ }
+}
projects / dcpomatic.git / blobdiff