*/
+
/** @file src/ffmpeg_decoder.cc
* @brief A decoder using FFmpeg to decode content.
*/
-#include "filter.h"
-#include "exceptions.h"
-#include "image.h"
-#include "util.h"
-#include "log.h"
+
+#include "audio_buffers.h"
+#include "audio_content.h"
+#include "audio_decoder.h"
+#include "compose.hpp"
#include "dcpomatic_log.h"
-#include "ffmpeg_decoder.h"
-#include "text_decoder.h"
+#include "exceptions.h"
#include "ffmpeg_audio_stream.h"
-#include "ffmpeg_subtitle_stream.h"
-#include "video_filter_graph.h"
-#include "audio_buffers.h"
#include "ffmpeg_content.h"
-#include "raw_image_proxy.h"
-#include "video_decoder.h"
+#include "ffmpeg_decoder.h"
+#include "ffmpeg_subtitle_stream.h"
#include "film.h"
-#include "audio_decoder.h"
-#include "compose.hpp"
+#include "filter.h"
+#include "frame_interval_checker.h"
+#include "image.h"
+#include "log.h"
+#include "raw_image_proxy.h"
#include "text_content.h"
-#include "audio_content.h"
+#include "text_decoder.h"
+#include "util.h"
+#include "video_decoder.h"
+#include "video_filter_graph.h"
#include <dcp/subtitle_string.h>
#include <sub/ssa_reader.h>
#include <sub/subtitle.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
}
-#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
-#include <vector>
#include <iomanip>
#include <iostream>
+#include <vector>
#include <stdint.h>
#include "i18n.h"
+
using std::cout;
+using std::dynamic_pointer_cast;
+using std::make_shared;
+using std::min;
+using std::shared_ptr;
using std::string;
using std::vector;
-using std::list;
-using std::min;
-using std::pair;
-using std::max;
-using std::map;
-using boost::shared_ptr;
-using boost::is_any_of;
-using boost::split;
using boost::optional;
-using boost::dynamic_pointer_cast;
using dcp::Size;
using namespace dcpomatic;
+
FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> film, shared_ptr<const FFmpegContent> c, bool fast)
: FFmpeg (c)
, Decoder (film)
- , _have_current_subtitle (false)
+ , _filter_graphs(c->filters(), dcp::Fraction(lrint(_ffmpeg_content->video_frame_rate().get_value_or(24) * 1000), 1000))
{
if (c->video && c->video->use()) {
- video.reset (new VideoDecoder (this, c));
+ video = make_shared<VideoDecoder>(this, c);
_pts_offset = pts_offset (c->ffmpeg_audio_streams(), c->first_video(), c->active_video_frame_rate(film));
/* It doesn't matter what size or pixel format this is, it just needs to be black */
- _black_image.reset (new Image (AV_PIX_FMT_RGB24, dcp::Size (128, 128), true));
+ _black_image = make_shared<Image>(AV_PIX_FMT_RGB24, dcp::Size (128, 128), Image::Alignment::PADDED);
_black_image->make_black ();
} else {
- _pts_offset = ContentTime ();
+ _pts_offset = {};
}
if (c->audio) {
- audio.reset (new AudioDecoder (this, c->audio, fast));
+ audio = make_shared<AudioDecoder>(this, c->audio, fast);
}
if (c->only_text()) {
- /* XXX: this time here should be the time of the first subtitle, not 0 */
- text.push_back (shared_ptr<TextDecoder> (new TextDecoder (this, c->only_text(), ContentTime())));
+ text.push_back (make_shared<TextDecoder>(this, c->only_text()));
+ /* XXX: we should be calling maybe_set_position() on this TextDecoder, but we can't easily find
+ * the time of the first subtitle at this point.
+ */
}
- _next_time.resize (_format_context->nb_streams);
+ for (auto i: c->ffmpeg_audio_streams()) {
+ _next_time[i] = boost::optional<dcpomatic::ContentTime>();
+ }
}
-void
+
+FFmpegDecoder::FlushResult
FFmpegDecoder::flush ()
{
- /* Get any remaining frames */
+ LOG_DEBUG_PLAYER("Flush FFmpeg decoder: current state %1", static_cast<int>(_flush_state));
- _packet.data = 0;
- _packet.size = 0;
+ switch (_flush_state) {
+ case FlushState::CODECS:
+ if (flush_codecs() == FlushResult::DONE) {
+ LOG_DEBUG_PLAYER_NC("Finished flushing codecs");
+ _flush_state = FlushState::AUDIO_DECODER;
+ }
+ break;
+ case FlushState::AUDIO_DECODER:
+ if (audio) {
+ audio->flush();
+ }
+ LOG_DEBUG_PLAYER_NC("Finished flushing audio decoder");
+ _flush_state = FlushState::FILL;
+ break;
+ case FlushState::FILL:
+ if (flush_fill() == FlushResult::DONE) {
+ LOG_DEBUG_PLAYER_NC("Finished flushing fills");
+ return FlushResult::DONE;
+ }
+ break;
+ }
+
+ return FlushResult::AGAIN;
+}
- /* XXX: should we reset _packet.data and size after each *_decode_* call? */
- while (video && decode_video_packet()) {}
+/** @return true if we have finished flushing the codecs */
+FFmpegDecoder::FlushResult
+FFmpegDecoder::flush_codecs()
+{
+ bool did_something = false;
+ if (video) {
+ if (decode_and_process_video_packet(nullptr)) {
+ did_something = true;
+ }
+ }
- if (audio) {
- decode_audio_packet ();
+ for (auto i: ffmpeg_content()->ffmpeg_audio_streams()) {
+ auto context = _codec_context[i->index(_format_context)];
+ int r = avcodec_send_packet (context, nullptr);
+ if (r < 0 && r != AVERROR_EOF) {
+ /* EOF can happen if we've already sent a flush packet */
+ throw DecodeError (N_("avcodec_send_packet"), N_("FFmpegDecoder::flush"), r);
+ }
+ r = avcodec_receive_frame (context, audio_frame(i));
+ if (r >= 0) {
+ process_audio_frame (i);
+ did_something = true;
+ }
}
+ return did_something ? FlushResult::AGAIN : FlushResult::DONE;
+}
+
+
+FFmpegDecoder::FlushResult
+FFmpegDecoder::flush_fill()
+{
/* Make sure all streams are the same length and round up to the next video frame */
- FrameRateChange const frc = film()->active_frame_rate_change(_ffmpeg_content->position());
+ bool did_something = false;
+
+ auto const frc = film()->active_frame_rate_change(_ffmpeg_content->position());
ContentTime full_length (_ffmpeg_content->full_length(film()), frc);
full_length = full_length.ceil (frc.source);
- if (video) {
+ if (video && !video->ignore()) {
double const vfr = _ffmpeg_content->video_frame_rate().get();
- Frame const f = full_length.frames_round (vfr);
- Frame v = video->position(film()).frames_round(vfr) + 1;
- while (v < f) {
- video->emit (film(), shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)), v);
- ++v;
+ auto const f = full_length.frames_round (vfr);
+ auto const v = video->position(film()).get_value_or(ContentTime()).frames_round(vfr) + 1;
+ if (v < f) {
+ video->emit(film(), make_shared<const RawImageProxy>(_black_image), v);
+ did_something = true;
}
}
- BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, _ffmpeg_content->ffmpeg_audio_streams ()) {
- ContentTime a = audio->stream_position(film(), i);
- /* Unfortunately if a is 0 that really means that we don't know the stream position since
- there has been no data on it since the last seek. In this case we'll just do nothing
- here. I'm not sure if that's the right idea.
- */
- if (a > ContentTime()) {
- while (a < full_length) {
- ContentTime to_do = min (full_length - a, ContentTime::from_seconds (0.1));
- shared_ptr<AudioBuffers> silence (new AudioBuffers (i->channels(), to_do.frames_ceil (i->frame_rate())));
+ if (audio && !audio->ignore()) {
+ for (auto i: _ffmpeg_content->ffmpeg_audio_streams ()) {
+ auto const a = audio->stream_position(film(), i);
+ /* Unfortunately if a is 0 that really means that we don't know the stream position since
+ there has been no data on it since the last seek. In this case we'll just do nothing
+ here. I'm not sure if that's the right idea.
+ */
+ if (a > ContentTime() && a < full_length) {
+ LOG_DEBUG_PLAYER("Flush inserts silence at %1", to_string(a));
+ auto to_do = min (full_length - a, ContentTime::from_seconds (0.1));
+ auto silence = make_shared<AudioBuffers>(i->channels(), to_do.frames_ceil (i->frame_rate()));
silence->make_silent ();
- audio->emit (film(), i, silence, a);
- a += to_do;
+ audio->emit (film(), i, silence, a, true);
+ did_something = true;
}
}
}
- if (audio) {
- audio->flush ();
- }
+ return did_something ? FlushResult::AGAIN : FlushResult::DONE;
}
+
bool
FFmpegDecoder::pass ()
{
-#ifdef DCPOMATIC_VARIANT_SWAROOP
- if (_ffmpeg_content->encrypted() && !_ffmpeg_content->kdm()) {
- return true;
- }
-#endif
+ auto packet = av_packet_alloc();
+ DCPOMATIC_ASSERT (packet);
- int r = av_read_frame (_format_context, &_packet);
+ int r = av_read_frame (_format_context, packet);
/* AVERROR_INVALIDDATA can apparently be returned sometimes even when av_read_frame
has pretty-much succeeded (and hence generated data which should be processed).
Hence it makes sense to continue here in that case.
*/
if (r < 0 && r != AVERROR_INVALIDDATA) {
+ LOG_DEBUG_PLAYER("FFpmegDecoder::pass flushes because av_read_frame returned %1", r);
if (r != AVERROR_EOF) {
/* Maybe we should fail here, but for now we'll just finish off instead */
char buf[256];
LOG_ERROR (N_("error on av_read_frame (%1) (%2)"), &buf[0], r);
}
- flush ();
- return true;
+ av_packet_free (&packet);
+ return flush() == FlushResult::DONE;
}
- int const si = _packet.stream_index;
- shared_ptr<const FFmpegContent> fc = _ffmpeg_content;
+ int const si = packet->stream_index;
+ auto fc = _ffmpeg_content;
if (_video_stream && si == _video_stream.get() && video && !video->ignore()) {
- decode_video_packet ();
+ decode_and_process_video_packet (packet);
} else if (fc->subtitle_stream() && fc->subtitle_stream()->uses_index(_format_context, si) && !only_text()->ignore()) {
- decode_subtitle_packet ();
+ decode_and_process_subtitle_packet (packet);
} else {
- decode_audio_packet ();
+ decode_and_process_audio_packet (packet);
}
- av_packet_unref (&_packet);
+ av_packet_free (&packet);
return false;
}
+
/** @param data pointer to array of pointers to buffers.
* Only the first buffer will be used for non-planar data, otherwise there will be one per channel.
*/
+static
shared_ptr<AudioBuffers>
-FFmpegDecoder::deinterleave_audio (shared_ptr<FFmpegAudioStream> stream) const
+deinterleave_audio(AVFrame* frame)
{
- DCPOMATIC_ASSERT (bytes_per_audio_sample (stream));
+ auto format = static_cast<AVSampleFormat>(frame->format);
- int const size = av_samples_get_buffer_size (
- 0, stream->stream(_format_context)->codec->channels, _frame->nb_samples, audio_sample_format (stream), 1
- );
+ /* XXX: can't we use swr_convert() to do the format conversion? */
- /* Deinterleave and convert to float */
+ int const channels = frame->channels;
+ int const frames = frame->nb_samples;
+ int const total_samples = frames * channels;
+ auto audio = make_shared<AudioBuffers>(channels, frames);
+ auto data = audio->data();
- /* total_samples and frames will be rounded down here, so if there are stray samples at the end
- of the block that do not form a complete sample or frame they will be dropped.
- */
- int const total_samples = size / bytes_per_audio_sample (stream);
- int const channels = stream->channels();
- int const frames = total_samples / channels;
- shared_ptr<AudioBuffers> audio (new AudioBuffers (channels, frames));
- float** data = audio->data();
+ if (frames == 0) {
+ return audio;
+ }
- switch (audio_sample_format (stream)) {
+ switch (format) {
case AV_SAMPLE_FMT_U8:
{
- uint8_t* p = reinterpret_cast<uint8_t *> (_frame->data[0]);
+ auto p = reinterpret_cast<uint8_t *> (frame->data[0]);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
case AV_SAMPLE_FMT_S16:
{
- int16_t* p = reinterpret_cast<int16_t *> (_frame->data[0]);
+ auto p = reinterpret_cast<int16_t *> (frame->data[0]);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
case AV_SAMPLE_FMT_S16P:
{
- int16_t** p = reinterpret_cast<int16_t **> (_frame->data);
+ auto p = reinterpret_cast<int16_t **> (frame->data);
for (int i = 0; i < channels; ++i) {
for (int j = 0; j < frames; ++j) {
data[i][j] = static_cast<float>(p[i][j]) / (1 << 15);
case AV_SAMPLE_FMT_S32:
{
- int32_t* p = reinterpret_cast<int32_t *> (_frame->data[0]);
+ auto p = reinterpret_cast<int32_t *> (frame->data[0]);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
case AV_SAMPLE_FMT_S32P:
{
- int32_t** p = reinterpret_cast<int32_t **> (_frame->data);
+ auto p = reinterpret_cast<int32_t **> (frame->data);
for (int i = 0; i < channels; ++i) {
for (int j = 0; j < frames; ++j) {
data[i][j] = static_cast<float>(p[i][j]) / 2147483648;
case AV_SAMPLE_FMT_FLT:
{
- float* p = reinterpret_cast<float*> (_frame->data[0]);
+ auto p = reinterpret_cast<float*> (frame->data[0]);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
case AV_SAMPLE_FMT_FLTP:
{
- float** p = reinterpret_cast<float**> (_frame->data);
- /* Sometimes there aren't as many channels in the _frame as in the stream */
- for (int i = 0; i < _frame->channels; ++i) {
+ auto p = reinterpret_cast<float**> (frame->data);
+ for (int i = 0; i < channels; ++i) {
memcpy (data[i], p[i], frames * sizeof(float));
}
- for (int i = _frame->channels; i < channels; ++i) {
- audio->make_silent (i);
- }
}
break;
default:
- throw DecodeError (String::compose (_("Unrecognised audio sample format (%1)"), static_cast<int> (audio_sample_format (stream))));
+ throw DecodeError (String::compose(_("Unrecognised audio sample format (%1)"), static_cast<int>(format)));
}
return audio;
}
+
AVSampleFormat
FFmpegDecoder::audio_sample_format (shared_ptr<FFmpegAudioStream> stream) const
{
- return stream->stream (_format_context)->codec->sample_fmt;
+ return static_cast<AVSampleFormat>(stream->stream(_format_context)->codecpar->format);
}
+
int
FFmpegDecoder::bytes_per_audio_sample (shared_ptr<FFmpegAudioStream> stream) const
{
return av_get_bytes_per_sample (audio_sample_format (stream));
}
+
void
FFmpegDecoder::seek (ContentTime time, bool accurate)
{
we don't really know what the seek will give us.
*/
- ContentTime pre_roll = accurate ? ContentTime::from_seconds (2) : ContentTime (0);
+ auto pre_roll = accurate ? ContentTime::from_seconds (2) : ContentTime (0);
time -= pre_roll;
/* XXX: it seems debatable whether PTS should be used here...
if (_video_stream) {
stream = _video_stream;
} else {
- shared_ptr<FFmpegAudioStream> s = dynamic_pointer_cast<FFmpegAudioStream> (_ffmpeg_content->audio->stream ());
+ DCPOMATIC_ASSERT (_ffmpeg_content->audio);
+ auto s = dynamic_pointer_cast<FFmpegAudioStream>(_ffmpeg_content->audio->stream());
if (s) {
stream = s->index (_format_context);
}
DCPOMATIC_ASSERT (stream);
- ContentTime u = time - _pts_offset;
+ auto u = time - _pts_offset;
if (u < ContentTime ()) {
u = ContentTime ();
}
AVSEEK_FLAG_BACKWARD
);
- {
- /* Force re-creation of filter graphs to reset them and hence to make sure
- they don't have any pre-seek frames knocking about.
- */
- boost::mutex::scoped_lock lm (_filter_graphs_mutex);
- _filter_graphs.clear ();
- }
+ /* Force re-creation of filter graphs to reset them and hence to make sure
+ they don't have any pre-seek frames knocking about.
+ */
+ _filter_graphs.clear();
if (video_codec_context ()) {
avcodec_flush_buffers (video_codec_context());
}
- BOOST_FOREACH (shared_ptr<FFmpegAudioStream> i, ffmpeg_content()->ffmpeg_audio_streams()) {
- avcodec_flush_buffers (i->stream(_format_context)->codec);
+ for (auto i: ffmpeg_content()->ffmpeg_audio_streams()) {
+ avcodec_flush_buffers (_codec_context[i->index(_format_context)]);
}
if (subtitle_codec_context ()) {
}
_have_current_subtitle = false;
-}
-void
-FFmpegDecoder::decode_audio_packet ()
-{
- /* Audio packets can contain multiple frames, so we may have to call avcodec_decode_audio4
- several times.
- */
+ for (auto& i: _next_time) {
+ i.second = boost::optional<dcpomatic::ContentTime>();
+ }
+}
- AVPacket copy_packet = _packet;
- int const stream_index = copy_packet.stream_index;
+shared_ptr<FFmpegAudioStream>
+FFmpegDecoder::audio_stream_from_index (int index) const
+{
/* XXX: inefficient */
- vector<shared_ptr<FFmpegAudioStream> > streams = ffmpeg_content()->ffmpeg_audio_streams ();
- vector<shared_ptr<FFmpegAudioStream> >::const_iterator stream = streams.begin ();
- while (stream != streams.end () && !(*stream)->uses_index (_format_context, stream_index)) {
+ auto streams = ffmpeg_content()->ffmpeg_audio_streams();
+ auto stream = streams.begin();
+ while (stream != streams.end() && !(*stream)->uses_index(_format_context, index)) {
++stream;
}
if (stream == streams.end ()) {
- /* The packet's stream may not be an audio one; just ignore it in this method if so */
- return;
+ return {};
}
- while (copy_packet.size > 0) {
+ return *stream;
+}
- int frame_finished;
- int decode_result = avcodec_decode_audio4 ((*stream)->stream (_format_context)->codec, _frame, &frame_finished, ©_packet);
- if (decode_result < 0) {
- /* avcodec_decode_audio4 can sometimes return an error even though it has decoded
- some valid data; for example dca_subframe_footer can return AVERROR_INVALIDDATA
- if it overreads the auxiliary data. ffplay carries on if frame_finished is true,
- even in the face of such an error, so I think we should too.
- Returning from the method here caused mantis #352.
- */
- LOG_WARNING ("avcodec_decode_audio4 failed (%1)", decode_result);
-
- /* Fudge decode_result so that we come out of the while loop when
- we've processed this data.
- */
- decode_result = copy_packet.size;
+void
+FFmpegDecoder::process_audio_frame (shared_ptr<FFmpegAudioStream> stream)
+{
+ auto frame = audio_frame (stream);
+ auto data = deinterleave_audio(frame);
+
+ auto const time_base = stream->stream(_format_context)->time_base;
+
+ ContentTime ct;
+ if (frame->pts == AV_NOPTS_VALUE) {
+ /* In some streams we see not every frame coming through with a timestamp; for those
+ that have AV_NOPTS_VALUE we need to work out the timestamp ourselves. This is
+ particularly noticeable with TrueHD streams (see #1111).
+ */
+ if (_next_time[stream]) {
+ ct = *_next_time[stream];
}
+ } else {
+ ct = ContentTime::from_seconds (
+ frame->best_effort_timestamp *
+ av_q2d(time_base))
+ + _pts_offset;
+ LOG_DEBUG_PLAYER(
+ "Process audio with timestamp %1 (BET %2, timebase %3/%4, (PTS offset %5)",
+ to_string(ct),
+ frame->best_effort_timestamp,
+ time_base.num,
+ time_base.den,
+ to_string(_pts_offset)
+ );
+ }
+
+ _next_time[stream] = ct + ContentTime::from_frames(data->frames(), stream->frame_rate());
+
+ if (ct < ContentTime()) {
+ /* Discard audio data that comes before time 0 */
+ auto const remove = min (int64_t(data->frames()), (-ct).frames_ceil(double(stream->frame_rate())));
+ data->move (data->frames() - remove, remove, 0);
+ data->set_frames (data->frames() - remove);
+ ct += ContentTime::from_frames (remove, stream->frame_rate());
+ }
+
+ if (ct < ContentTime()) {
+ LOG_WARNING (
+ "Crazy timestamp %1 for %2 samples in stream %3 (ts=%4 tb=%5, off=%6)",
+ to_string(ct),
+ data->frames(),
+ stream->id(),
+ frame->best_effort_timestamp,
+ av_q2d(time_base),
+ to_string(_pts_offset)
+ );
+ }
+
+ /* Give this data provided there is some, and its time is sane */
+ if (ct >= ContentTime() && data->frames() > 0) {
+ audio->emit (film(), stream, data, ct);
+ }
+}
- if (frame_finished) {
- shared_ptr<AudioBuffers> data = deinterleave_audio (*stream);
-
- ContentTime ct;
- if (_frame->pts == AV_NOPTS_VALUE && _next_time[stream_index]) {
- /* In some streams we see not every frame coming through with a timestamp; for those
- that have AV_NOPTS_VALUE we need to work out the timestamp ourselves. This is
- particularly noticeable with TrueHD streams (see #1111).
- */
- ct = *_next_time[stream_index];
- } else {
- ct = ContentTime::from_seconds (
- av_frame_get_best_effort_timestamp (_frame) *
- av_q2d ((*stream)->stream (_format_context)->time_base))
- + _pts_offset;
- }
-
- _next_time[stream_index] = ct + ContentTime::from_frames(data->frames(), (*stream)->frame_rate());
- if (ct < ContentTime ()) {
- /* Discard audio data that comes before time 0 */
- Frame const remove = min (int64_t (data->frames()), (-ct).frames_ceil(double((*stream)->frame_rate ())));
- data->move (data->frames() - remove, remove, 0);
- data->set_frames (data->frames() - remove);
- ct += ContentTime::from_frames (remove, (*stream)->frame_rate ());
- }
+void
+FFmpegDecoder::decode_and_process_audio_packet (AVPacket* packet)
+{
+ auto stream = audio_stream_from_index (packet->stream_index);
+ if (!stream) {
+ return;
+ }
- if (ct < ContentTime()) {
- LOG_WARNING (
- "Crazy timestamp %1 for %2 samples in stream %3 packet pts %4 (ts=%5 tb=%6, off=%7)",
- to_string(ct),
- data->frames(),
- copy_packet.stream_index,
- copy_packet.pts,
- av_frame_get_best_effort_timestamp(_frame),
- av_q2d((*stream)->stream(_format_context)->time_base),
- to_string(_pts_offset)
- );
- }
+ auto context = _codec_context[stream->index(_format_context)];
+ auto frame = audio_frame (stream);
- /* Give this data provided there is some, and its time is sane */
- if (ct >= ContentTime() && data->frames() > 0) {
- audio->emit (film(), *stream, data, ct);
- }
+ LOG_DEBUG_PLAYER("Send audio packet on stream %1", stream->index(_format_context));
+ int r = avcodec_send_packet (context, packet);
+ if (r < 0) {
+ LOG_WARNING("avcodec_send_packet returned %1 for an audio packet", r);
+ }
+ while (r >= 0) {
+ r = avcodec_receive_frame (context, frame);
+ if (r == AVERROR(EAGAIN)) {
+ /* More input is required */
+ LOG_DEBUG_PLAYER_NC("EAGAIN after trying to receive audio frame");
+ return;
}
- copy_packet.data += decode_result;
- copy_packet.size -= decode_result;
+ /* We choose to be relaxed here about other errors; it seems that there may be valid
+ * data to decode even if an error occurred. #352 may be related (though this was
+ * when we were using an old version of the FFmpeg API).
+ */
+ process_audio_frame (stream);
}
}
+
bool
-FFmpegDecoder::decode_video_packet ()
+FFmpegDecoder::decode_and_process_video_packet (AVPacket* packet)
{
DCPOMATIC_ASSERT (_video_stream);
- int frame_finished;
- if (avcodec_decode_video2 (video_codec_context(), _frame, &frame_finished, &_packet) < 0 || !frame_finished) {
- return false;
- }
+ auto context = video_codec_context();
- boost::mutex::scoped_lock lm (_filter_graphs_mutex);
+ bool pending = false;
+ do {
+ int r = avcodec_send_packet (context, packet);
+ if (r < 0) {
+ LOG_WARNING("avcodec_send_packet returned %1 for a video packet", r);
+ }
- shared_ptr<VideoFilterGraph> graph;
+ /* EAGAIN means we should call avcodec_receive_frame and then re-send the same packet */
+ pending = r == AVERROR(EAGAIN);
+
+ while (true) {
+ r = avcodec_receive_frame (context, _video_frame);
+ if (r == AVERROR(EAGAIN) || r == AVERROR_EOF || (r < 0 && !packet)) {
+ /* More input is required, no more frames are coming, or we are flushing and there was
+ * some error which we just want to ignore.
+ */
+ return false;
+ } else if (r < 0) {
+ throw DecodeError (N_("avcodec_receive_frame"), N_("FFmpeg::decode_and_process_video_packet"), r);
+ }
- list<shared_ptr<VideoFilterGraph> >::iterator i = _filter_graphs.begin();
- while (i != _filter_graphs.end() && !(*i)->can_process (dcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format)) {
- ++i;
- }
+ process_video_frame ();
+ }
+ } while (pending);
- if (i == _filter_graphs.end ()) {
- dcp::Fraction vfr (lrint(_ffmpeg_content->video_frame_rate().get() * 1000), 1000);
- graph.reset (new VideoFilterGraph (dcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format, vfr));
- graph->setup (_ffmpeg_content->filters ());
- _filter_graphs.push_back (graph);
- LOG_GENERAL (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format);
- } else {
- graph = *i;
- }
+ return true;
+}
- list<pair<shared_ptr<Image>, int64_t> > images = graph->process (_frame);
- for (list<pair<shared_ptr<Image>, int64_t> >::iterator i = images.begin(); i != images.end(); ++i) {
+void
+FFmpegDecoder::process_video_frame ()
+{
+ auto graph = _filter_graphs.get(dcp::Size(_video_frame->width, _video_frame->height), static_cast<AVPixelFormat>(_video_frame->format));
+ auto images = graph->process (_video_frame);
- shared_ptr<Image> image = i->first;
+ for (auto const& i: images) {
- if (i->second != AV_NOPTS_VALUE) {
- double const pts = i->second * av_q2d (_format_context->streams[_video_stream.get()]->time_base) + _pts_offset.seconds ();
+ auto image = i.first;
+
+ if (i.second != AV_NOPTS_VALUE) {
+ double const pts = i.second * av_q2d(_format_context->streams[_video_stream.get()]->time_base) + _pts_offset.seconds();
video->emit (
film(),
- shared_ptr<ImageProxy> (new RawImageProxy (image)),
+ make_shared<RawImageProxy>(image),
llrint(pts * _ffmpeg_content->active_video_frame_rate(film()))
);
} else {
LOG_WARNING_NC ("Dropping frame without PTS");
}
}
-
- return true;
}
+
void
-FFmpegDecoder::decode_subtitle_packet ()
+FFmpegDecoder::decode_and_process_subtitle_packet (AVPacket* packet)
{
+ auto context = subtitle_codec_context();
+ if (!context) {
+ return;
+ }
+
int got_subtitle;
AVSubtitle sub;
- if (avcodec_decode_subtitle2 (subtitle_codec_context(), &sub, &got_subtitle, &_packet) < 0 || !got_subtitle) {
+ if (avcodec_decode_subtitle2(context, &sub, &got_subtitle, packet) < 0 || !got_subtitle) {
return;
}
+ auto sub_period = subtitle_period (packet, ffmpeg_content()->subtitle_stream()->stream(_format_context), sub);
+
/* Stop any current subtitle, either at the time it was supposed to stop, or now if now is sooner */
if (_have_current_subtitle) {
if (_current_subtitle_to) {
- only_text()->emit_stop (min(*_current_subtitle_to, subtitle_period(sub).from + _pts_offset));
+ only_text()->emit_stop (min(*_current_subtitle_to, sub_period.from + _pts_offset));
} else {
- only_text()->emit_stop (subtitle_period(sub).from + _pts_offset);
+ only_text()->emit_stop (sub_period.from + _pts_offset);
}
_have_current_subtitle = false;
}
if (sub.num_rects <= 0) {
/* Nothing new in this subtitle */
+ avsubtitle_free (&sub);
return;
}
/* Subtitle PTS (within the source, not taking into account any of the
source that we may have chopped off for the DCP).
*/
- FFmpegSubtitlePeriod sub_period = subtitle_period (sub);
ContentTime from;
from = sub_period.from + _pts_offset;
+ _have_current_subtitle = true;
if (sub_period.to) {
_current_subtitle_to = *sub_period.to + _pts_offset;
} else {
_current_subtitle_to = optional<ContentTime>();
- _have_current_subtitle = true;
}
+ ContentBitmapText bitmap_text(from);
for (unsigned int i = 0; i < sub.num_rects; ++i) {
- AVSubtitleRect const * rect = sub.rects[i];
+ auto const rect = sub.rects[i];
switch (rect->type) {
case SUBTITLE_NONE:
break;
case SUBTITLE_BITMAP:
- decode_bitmap_subtitle (rect, from);
+ bitmap_text.subs.push_back(process_bitmap_subtitle(rect));
break;
case SUBTITLE_TEXT:
cout << "XXX: SUBTITLE_TEXT " << rect->text << "\n";
break;
case SUBTITLE_ASS:
- decode_ass_subtitle (rect->ass, from);
+ process_ass_subtitle (rect->ass, from);
break;
}
}
+ if (!bitmap_text.subs.empty()) {
+ only_text()->emit_bitmap_start(bitmap_text);
+ }
+
if (_current_subtitle_to) {
only_text()->emit_stop (*_current_subtitle_to);
}
avsubtitle_free (&sub);
}
-void
-FFmpegDecoder::decode_bitmap_subtitle (AVSubtitleRect const * rect, ContentTime from)
+
+BitmapText
+FFmpegDecoder::process_bitmap_subtitle (AVSubtitleRect const * rect)
{
/* Note BGRA is expressed little-endian, so the first byte in the word is B, second
G, third R, fourth A.
*/
- shared_ptr<Image> image (new Image (AV_PIX_FMT_BGRA, dcp::Size (rect->w, rect->h), true));
+ auto image = make_shared<Image>(AV_PIX_FMT_BGRA, dcp::Size (rect->w, rect->h), Image::Alignment::PADDED);
#ifdef DCPOMATIC_HAVE_AVSUBTITLERECT_PICT
/* Start of the first line in the subtitle */
- uint8_t* sub_p = rect->pict.data[0];
- /* sub_p looks up into a BGRA palette which is here
+ auto sub_p = rect->pict.data[0];
+ /* sub_p looks up into a BGRA palette which is at rect->pict.data[1];
(i.e. first byte B, second G, third R, fourth A)
*/
- uint32_t const * palette = (uint32_t *) rect->pict.data[1];
+ auto const* palette = rect->pict.data[1];
#else
/* Start of the first line in the subtitle */
- uint8_t* sub_p = rect->data[0];
- /* sub_p looks up into a BGRA palette which is here
- (i.e. first byte B, second G, third R, fourth A)
+ auto sub_p = rect->data[0];
+ /* sub_p looks up into a BGRA palette which is at rect->data[1].
+ (first byte B, second G, third R, fourth A)
*/
- uint32_t const * palette = (uint32_t *) rect->data[1];
+ auto const* palette = rect->data[1];
#endif
/* And the stream has a map of those palette colours to colours
chosen by the user; created a `mapped' palette from those settings.
*/
- map<RGBA, RGBA> colour_map = ffmpeg_content()->subtitle_stream()->colours ();
+ auto colour_map = ffmpeg_content()->subtitle_stream()->colours();
vector<RGBA> mapped_palette (rect->nb_colors);
for (int i = 0; i < rect->nb_colors; ++i) {
- RGBA c ((palette[i] & 0xff0000) >> 16, (palette[i] & 0xff00) >> 8, palette[i] & 0xff, (palette[i] & 0xff000000) >> 24);
- map<RGBA, RGBA>::const_iterator j = colour_map.find (c);
+ RGBA c (palette[2], palette[1], palette[0], palette[3]);
+ auto j = colour_map.find (c);
if (j != colour_map.end ()) {
mapped_palette[i] = j->second;
} else {
*/
mapped_palette[i] = c;
}
+ palette += 4;
}
/* Start of the output data */
- uint32_t* out_p = (uint32_t *) image->data()[0];
+ auto out_p = image->data()[0];
for (int y = 0; y < rect->h; ++y) {
- uint8_t* sub_line_p = sub_p;
- uint32_t* out_line_p = out_p;
+ auto sub_line_p = sub_p;
+ auto out_line_p = out_p;
for (int x = 0; x < rect->w; ++x) {
- RGBA const p = mapped_palette[*sub_line_p++];
- /* XXX: this seems to be wrong to me (isn't the output image BGRA?) but it looks right on screen */
- *out_line_p++ = (p.a << 24) | (p.b << 16) | (p.g << 8) | p.r;
+ auto const p = mapped_palette[*sub_line_p++];
+ *out_line_p++ = p.b;
+ *out_line_p++ = p.g;
+ *out_line_p++ = p.r;
+ *out_line_p++ = p.a;
}
#ifdef DCPOMATIC_HAVE_AVSUBTITLERECT_PICT
sub_p += rect->pict.linesize[0];
#else
sub_p += rect->linesize[0];
#endif
- out_p += image->stride()[0] / sizeof (uint32_t);
+ out_p += image->stride()[0];
}
int target_width = subtitle_codec_context()->width;
if (target_height == 0 && video_codec_context()) {
target_height = video_codec_context()->height;
}
- DCPOMATIC_ASSERT (target_width);
- DCPOMATIC_ASSERT (target_height);
+
+ int x_offset = 0;
+ int y_offset = 0;
+ if (_ffmpeg_content->video && _ffmpeg_content->video->use()) {
+ auto const crop = _ffmpeg_content->video->actual_crop();
+ target_width -= crop.left + crop.right;
+ target_height -= crop.top + crop.bottom;
+ x_offset = -crop.left;
+ y_offset = -crop.top;
+ }
+
+ DCPOMATIC_ASSERT(target_width > 0);
+ DCPOMATIC_ASSERT(target_height > 0);
+
dcpomatic::Rect<double> const scaled_rect (
- static_cast<double> (rect->x) / target_width,
- static_cast<double> (rect->y) / target_height,
- static_cast<double> (rect->w) / target_width,
- static_cast<double> (rect->h) / target_height
+ static_cast<double>(rect->x + x_offset) / target_width,
+ static_cast<double>(rect->y + y_offset) / target_height,
+ static_cast<double>(rect->w) / target_width,
+ static_cast<double>(rect->h) / target_height
);
- only_text()->emit_bitmap_start (from, image, scaled_rect);
+ return { image, scaled_rect };
}
+
void
-FFmpegDecoder::decode_ass_subtitle (string ass, ContentTime from)
+FFmpegDecoder::process_ass_subtitle (string ass, ContentTime from)
{
/* We have no styles and no Format: line, so I'm assuming that FFmpeg
produces a single format of Dialogue: lines...
}
sub::RawSubtitle base;
- list<sub::RawSubtitle> raw = sub::SSAReader::parse_line (
+ auto video_size = _ffmpeg_content->video->size();
+ DCPOMATIC_ASSERT(video_size);
+
+ auto raw = sub::SSAReader::parse_line (
base,
text,
- _ffmpeg_content->video->size().width,
- _ffmpeg_content->video->size().height
+ video_size->width,
+ video_size->height,
+ sub::Colour(1, 1, 1)
);
- BOOST_FOREACH (sub::Subtitle const & i, sub::collect<list<sub::Subtitle> > (raw)) {
+ for (auto const& i: sub::collect<vector<sub::Subtitle>>(raw)) {
only_text()->emit_plain_start (from, i);
}
}
projects / dcpomatic.git / blobdiff