using boost::weak_ptr;
using boost::optional;
using namespace dcpomatic;
+#if BOOST_VERSION >= 106100
+using namespace boost::placeholders;
+#endif
int FFmpegFileEncoder::_video_stream_index = 0;
-int FFmpegFileEncoder::_audio_stream_index = 1;
+int FFmpegFileEncoder::_audio_stream_index_base = 1;
+
+
+class ExportAudioStream : public boost::noncopyable
+{
+public:
+ ExportAudioStream (string codec_name, int channels, int frame_rate, AVSampleFormat sample_format, AVFormatContext* format_context, int stream_index)
+ : _format_context (format_context)
+ , _stream_index (stream_index)
+ {
+ _codec = avcodec_find_encoder_by_name (codec_name.c_str());
+ if (!_codec) {
+ throw runtime_error (String::compose("could not find FFmpeg encoder %1", codec_name));
+ }
+
+ _codec_context = avcodec_alloc_context3 (_codec);
+ if (!_codec_context) {
+ throw runtime_error ("could not allocate FFmpeg audio context");
+ }
+
+ avcodec_get_context_defaults3 (_codec_context, _codec);
+
+ /* XXX: configurable */
+ _codec_context->bit_rate = channels * 128 * 1024;
+ _codec_context->sample_fmt = sample_format;
+ _codec_context->sample_rate = frame_rate;
+ _codec_context->channel_layout = av_get_default_channel_layout (channels);
+ _codec_context->channels = channels;
+
+ _stream = avformat_new_stream (format_context, _codec);
+ if (!_stream) {
+ throw runtime_error ("could not create FFmpeg output audio stream");
+ }
+
+ _stream->id = stream_index;
+DCPOMATIC_DISABLE_WARNINGS
+ _stream->codec = _codec_context;
+DCPOMATIC_ENABLE_WARNINGS
+
+ int r = avcodec_open2 (_codec_context, _codec, 0);
+ if (r < 0) {
+ char buffer[256];
+ av_strerror (r, buffer, sizeof(buffer));
+ throw runtime_error (String::compose("could not open FFmpeg audio codec (%1)", buffer));
+ }
+ }
+
+ ~ExportAudioStream ()
+ {
+ avcodec_close (_codec_context);
+ }
+
+ int frame_size () const {
+ return _codec_context->frame_size;
+ }
+
+ bool flush ()
+ {
+ AVPacket packet;
+ av_init_packet (&packet);
+ packet.data = 0;
+ packet.size = 0;
+ bool flushed = false;
+
+ int got_packet;
+DCPOMATIC_DISABLE_WARNINGS
+ avcodec_encode_audio2 (_codec_context, &packet, 0, &got_packet);
+DCPOMATIC_ENABLE_WARNINGS
+ if (got_packet) {
+ packet.stream_index = 0;
+ av_interleaved_write_frame (_format_context, &packet);
+ } else {
+ flushed = true;
+ }
+ av_packet_unref (&packet);
+ return flushed;
+ }
+
+ void write (int size, int channel_offset, int channels, float** data, int64_t sample_offset)
+ {
+ DCPOMATIC_ASSERT (size);
+
+ AVFrame* frame = av_frame_alloc ();
+ DCPOMATIC_ASSERT (frame);
+
+ int const buffer_size = av_samples_get_buffer_size (0, channels, size, _codec_context->sample_fmt, 0);
+ DCPOMATIC_ASSERT (buffer_size >= 0);
+
+ void* samples = av_malloc (buffer_size);
+ DCPOMATIC_ASSERT (samples);
+
+ frame->nb_samples = size;
+ int r = avcodec_fill_audio_frame (frame, channels, _codec_context->sample_fmt, (const uint8_t *) samples, buffer_size, 0);
+ DCPOMATIC_ASSERT (r >= 0);
+
+ switch (_codec_context->sample_fmt) {
+ case AV_SAMPLE_FMT_S16:
+ {
+ int16_t* q = reinterpret_cast<int16_t*> (samples);
+ for (int i = 0; i < size; ++i) {
+ for (int j = 0; j < channels; ++j) {
+ *q++ = data[j + channel_offset][i] * 32767;
+ }
+ }
+ break;
+ }
+ case AV_SAMPLE_FMT_S32:
+ {
+ int32_t* q = reinterpret_cast<int32_t*> (samples);
+ for (int i = 0; i < size; ++i) {
+ for (int j = 0; j < channels; ++j) {
+ *q++ = data[j + channel_offset][i] * 2147483647;
+ }
+ }
+ break;
+ }
+ case AV_SAMPLE_FMT_FLTP:
+ {
+ float* q = reinterpret_cast<float*> (samples);
+ for (int i = 0; i < channels; ++i) {
+ memcpy (q, data[i + channel_offset], sizeof(float) * size);
+ q += size;
+ }
+ break;
+ }
+ default:
+ DCPOMATIC_ASSERT (false);
+ }
+
+ DCPOMATIC_ASSERT (_codec_context->time_base.num == 1);
+ frame->pts = sample_offset * _codec_context->time_base.den / _codec_context->sample_rate;
+
+ AVPacket packet;
+ av_init_packet (&packet);
+ packet.data = 0;
+ packet.size = 0;
+ int got_packet;
+
+ DCPOMATIC_DISABLE_WARNINGS
+ if (avcodec_encode_audio2 (_codec_context, &packet, frame, &got_packet) < 0) {
+ throw EncodeError ("FFmpeg audio encode failed");
+ }
+ DCPOMATIC_ENABLE_WARNINGS
+
+ if (got_packet && packet.size) {
+ packet.stream_index = _stream_index;
+ av_interleaved_write_frame (_format_context, &packet);
+ av_packet_unref (&packet);
+ }
+
+ av_free (samples);
+ av_frame_free (&frame);
+ }
+
+private:
+ AVFormatContext* _format_context;
+ AVCodec* _codec;
+ AVCodecContext* _codec_context;
+ AVStream* _stream;
+ int _stream_index;
+};
+
FFmpegFileEncoder::FFmpegFileEncoder (
dcp::Size video_frame_size,
int audio_frame_rate,
int channels,
ExportFormat format,
+ bool audio_stream_per_channel,
int x264_crf,
boost::filesystem::path output
#ifdef DCPOMATIC_VARIANT_SWAROOP
, optional<string> id
#endif
)
- : _video_options (0)
+ : _audio_stream_per_channel (audio_stream_per_channel)
+ , _video_options (0)
, _audio_channels (channels)
, _output (output)
, _video_frame_size (video_frame_size)
, _video_frame_rate (video_frame_rate)
, _audio_frame_rate (audio_frame_rate)
+ , _audio_frames (0)
{
_pixel_format = pixel_format (format);
_audio_codec_name = "pcm_s24le";
av_dict_set_int (&_video_options, "crf", x264_crf, 0);
break;
+ default:
+ DCPOMATIC_ASSERT (false);
}
- setup_video ();
- setup_audio ();
-
#ifdef DCPOMATIC_VARIANT_SWAROOP
int r = avformat_alloc_output_context2 (&_format_context, av_guess_format("mov", 0, 0), 0, 0);
#else
throw runtime_error (String::compose("could not allocate FFmpeg format context (%1)", r));
}
- _video_stream = avformat_new_stream (_format_context, _video_codec);
- if (!_video_stream) {
- throw runtime_error ("could not create FFmpeg output video stream");
- }
-
- _audio_stream = avformat_new_stream (_format_context, _audio_codec);
- if (!_audio_stream) {
- throw runtime_error ("could not create FFmpeg output audio stream");
- }
-
- _video_stream->id = _video_stream_index;
- _video_stream->codec = _video_codec_context;
-
- _audio_stream->id = _audio_stream_index;
- _audio_stream->codec = _audio_codec_context;
-
- if (avcodec_open2 (_video_codec_context, _video_codec, &_video_options) < 0) {
- throw runtime_error ("could not open FFmpeg video codec");
- }
+ setup_video ();
+ setup_audio ();
- r = avcodec_open2 (_audio_codec_context, _audio_codec, 0);
+ r = avio_open_boost (&_format_context->pb, _output, AVIO_FLAG_WRITE);
if (r < 0) {
- char buffer[256];
- av_strerror (r, buffer, sizeof(buffer));
- throw runtime_error (String::compose ("could not open FFmpeg audio codec (%1)", buffer));
- }
-
- if (avio_open_boost (&_format_context->pb, _output, AVIO_FLAG_WRITE) < 0) {
- throw runtime_error ("could not open FFmpeg output file");
+ throw runtime_error (String::compose("could not open FFmpeg output file %1 (%2)", _output.string(), r));
}
AVDictionary* options = 0;
_pending_audio.reset (new AudioBuffers(channels, 0));
}
+
+FFmpegFileEncoder::~FFmpegFileEncoder ()
+{
+ _audio_streams.clear ();
+ avcodec_close (_video_codec_context);
+ avformat_free_context (_format_context);
+}
+
+
AVPixelFormat
FFmpegFileEncoder::pixel_format (ExportFormat format)
{
_video_codec_context->time_base = (AVRational) { 1, _video_frame_rate };
_video_codec_context->pix_fmt = _pixel_format;
_video_codec_context->flags |= AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_GLOBAL_HEADER;
-}
-void
-FFmpegFileEncoder::setup_audio ()
-{
- _audio_codec = avcodec_find_encoder_by_name (_audio_codec_name.c_str());
- if (!_audio_codec) {
- throw runtime_error (String::compose ("could not find FFmpeg encoder %1", _audio_codec_name));
+ _video_stream = avformat_new_stream (_format_context, _video_codec);
+ if (!_video_stream) {
+ throw runtime_error ("could not create FFmpeg output video stream");
}
- _audio_codec_context = avcodec_alloc_context3 (_audio_codec);
- if (!_audio_codec_context) {
- throw runtime_error ("could not allocate FFmpeg audio context");
+DCPOMATIC_DISABLE_WARNINGS
+ _video_stream->id = _video_stream_index;
+ _video_stream->codec = _video_codec_context;
+DCPOMATIC_ENABLE_WARNINGS
+
+ if (avcodec_open2 (_video_codec_context, _video_codec, &_video_options) < 0) {
+ throw runtime_error ("could not open FFmpeg video codec");
}
+}
- avcodec_get_context_defaults3 (_audio_codec_context, _audio_codec);
- /* XXX: configurable */
- _audio_codec_context->bit_rate = _audio_channels * 128 * 1024;
- _audio_codec_context->sample_fmt = _sample_format;
- _audio_codec_context->sample_rate = _audio_frame_rate;
- _audio_codec_context->channel_layout = av_get_default_channel_layout (_audio_channels);
- _audio_codec_context->channels = _audio_channels;
+void
+FFmpegFileEncoder::setup_audio ()
+{
+ int const streams = _audio_stream_per_channel ? _audio_channels : 1;
+ int const channels_per_stream = _audio_stream_per_channel ? 1 : _audio_channels;
+
+ for (int i = 0; i < streams; ++i) {
+ _audio_streams.push_back(
+ shared_ptr<ExportAudioStream>(
+ new ExportAudioStream(_audio_codec_name, channels_per_stream, _audio_frame_rate, _sample_format, _format_context, _audio_stream_index_base + i)
+ )
+ );
+ }
}
+
void
FFmpegFileEncoder::flush ()
{
packet.size = 0;
int got_packet;
+DCPOMATIC_DISABLE_WARNINGS
avcodec_encode_video2 (_video_codec_context, &packet, 0, &got_packet);
+DCPOMATIC_ENABLE_WARNINGS
if (got_packet) {
packet.stream_index = 0;
av_interleaved_write_frame (_format_context, &packet);
}
av_packet_unref (&packet);
- av_init_packet (&packet);
- packet.data = 0;
- packet.size = 0;
-
- avcodec_encode_audio2 (_audio_codec_context, &packet, 0, &got_packet);
- if (got_packet) {
- packet.stream_index = 0;
- av_interleaved_write_frame (_format_context, &packet);
- } else {
- flushed_audio = true;
+ flushed_audio = true;
+ BOOST_FOREACH (shared_ptr<ExportAudioStream> i, _audio_streams) {
+ if (!i->flush()) {
+ flushed_audio = false;
+ }
}
- av_packet_unref (&packet);
}
av_write_trailer (_format_context);
-
- avcodec_close (_video_codec_context);
- avcodec_close (_audio_codec_context);
- avio_close (_format_context->pb);
- avformat_free_context (_format_context);
}
void
frame->width = image->size().width;
frame->height = image->size().height;
frame->format = _pixel_format;
- frame->pts = time.seconds() / av_q2d (_video_stream->time_base);
+ DCPOMATIC_ASSERT (_video_stream->time_base.num == 1);
+ frame->pts = time.get() * _video_stream->time_base.den / DCPTime::HZ;
AVPacket packet;
av_init_packet (&packet);
packet.size = 0;
int got_packet;
+DCPOMATIC_DISABLE_WARNINGS
if (avcodec_encode_video2 (_video_codec_context, &packet, frame, &got_packet) < 0) {
throw EncodeError ("FFmpeg video encode failed");
}
+DCPOMATIC_ENABLE_WARNINGS
if (got_packet && packet.size) {
packet.stream_index = _video_stream_index;
{
_pending_audio->append (audio);
- int frame_size = _audio_codec_context->frame_size;
+ DCPOMATIC_ASSERT (!_audio_streams.empty());
+ int frame_size = _audio_streams[0]->frame_size();
if (frame_size == 0) {
/* codec has AV_CODEC_CAP_VARIABLE_FRAME_SIZE */
frame_size = _audio_frame_rate / _video_frame_rate;
void
FFmpegFileEncoder::audio_frame (int size)
{
- DCPOMATIC_ASSERT (size);
-
- AVFrame* frame = av_frame_alloc ();
- DCPOMATIC_ASSERT (frame);
-
- int const channels = _pending_audio->channels();
- DCPOMATIC_ASSERT (channels);
-
- int const buffer_size = av_samples_get_buffer_size (0, channels, size, _audio_codec_context->sample_fmt, 0);
- DCPOMATIC_ASSERT (buffer_size >= 0);
-
- void* samples = av_malloc (buffer_size);
- DCPOMATIC_ASSERT (samples);
-
- frame->nb_samples = size;
- int r = avcodec_fill_audio_frame (frame, channels, _audio_codec_context->sample_fmt, (const uint8_t *) samples, buffer_size, 0);
- DCPOMATIC_ASSERT (r >= 0);
-
- float** p = _pending_audio->data ();
- switch (_audio_codec_context->sample_fmt) {
- case AV_SAMPLE_FMT_S16:
- {
- int16_t* q = reinterpret_cast<int16_t*> (samples);
- for (int i = 0; i < size; ++i) {
- for (int j = 0; j < channels; ++j) {
- *q++ = p[j][i] * 32767;
- }
- }
- break;
- }
- case AV_SAMPLE_FMT_S32:
- {
- int32_t* q = reinterpret_cast<int32_t*> (samples);
- for (int i = 0; i < size; ++i) {
- for (int j = 0; j < channels; ++j) {
- *q++ = p[j][i] * 2147483647;
- }
+ if (_audio_stream_per_channel) {
+ int offset = 0;
+ BOOST_FOREACH (shared_ptr<ExportAudioStream> i, _audio_streams) {
+ i->write (size, offset, 1, _pending_audio->data(), _audio_frames);
+ ++offset;
}
- break;
+ } else {
+ DCPOMATIC_ASSERT (!_audio_streams.empty());
+ DCPOMATIC_ASSERT (_pending_audio->channels());
+ _audio_streams[0]->write (size, 0, _pending_audio->channels(), _pending_audio->data(), _audio_frames);
}
- case AV_SAMPLE_FMT_FLTP:
- {
- float* q = reinterpret_cast<float*> (samples);
- for (int i = 0; i < channels; ++i) {
- memcpy (q, p[i], sizeof(float) * size);
- q += size;
- }
- break;
- }
- default:
- DCPOMATIC_ASSERT (false);
- }
-
- AVPacket packet;
- av_init_packet (&packet);
- packet.data = 0;
- packet.size = 0;
-
- int got_packet;
- if (avcodec_encode_audio2 (_audio_codec_context, &packet, frame, &got_packet) < 0) {
- throw EncodeError ("FFmpeg audio encode failed");
- }
-
- if (got_packet && packet.size) {
- packet.stream_index = _audio_stream_index;
- av_interleaved_write_frame (_format_context, &packet);
- av_packet_unref (&packet);
- }
-
- av_free (samples);
- av_frame_free (&frame);
_pending_audio->trim_start (size);
+ _audio_frames += size;
}
void
projects / dcpomatic.git / blobdiff