/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <iomanip>
#include <iostream>
#include <stdint.h>
-#include <boost/lexical_cast.hpp>
#include <sndfile.h>
extern "C" {
#include <libavcodec/avcodec.h>
#include "ffmpeg_decoder.h"
#include "filter_graph.h"
#include "audio_buffers.h"
+#include "ffmpeg_content.h"
+#include "image_proxy.h"
#include "i18n.h"
+#define LOG_GENERAL(...) film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
+#define LOG_ERROR(...) film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_ERROR);
+#define LOG_WARNING(...) film->log()->log (__VA_ARGS__, Log::TYPE_WARNING);
+
using std::cout;
using std::string;
using std::vector;
FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<const FFmpegContent> c, bool video, bool audio)
: Decoder (f)
, VideoDecoder (f, c)
- , AudioDecoder (f)
+ , AudioDecoder (f, c)
, SubtitleDecoder (f)
, FFmpeg (c)
, _subtitle_codec_context (0)
, _subtitle_codec (0)
, _decode_video (video)
, _decode_audio (audio)
- , _video_pts_offset (0)
- , _audio_pts_offset (0)
+ , _pts_offset (0)
, _just_sought (false)
{
setup_subtitle ();
insertion of black frames to work.
We will do:
- audio_pts_to_use = audio_pts_from_ffmpeg + audio_pts_offset;
- video_pts_to_use = video_pts_from_ffmpeg + video_pts_offset;
+ audio_pts_to_use = audio_pts_from_ffmpeg + pts_offset;
+ video_pts_to_use = video_pts_from_ffmpeg + pts_offset;
*/
bool const have_video = video && c->first_video();
/* First, make one of them start at 0 */
if (have_audio && have_video) {
- _video_pts_offset = _audio_pts_offset = - min (c->first_video().get(), c->audio_stream()->first_audio.get());
+ _pts_offset = - min (c->first_video().get(), c->audio_stream()->first_audio.get());
} else if (have_video) {
- _video_pts_offset = - c->first_video().get();
+ _pts_offset = - c->first_video().get();
+ } else if (have_audio) {
+ _pts_offset = - c->audio_stream()->first_audio.get();
}
/* Now adjust both so that the video pts starts on a frame */
if (have_video && have_audio) {
- double first_video = c->first_video().get() + _video_pts_offset;
+ double first_video = c->first_video().get() + _pts_offset;
double const old_first_video = first_video;
/* Round the first video up to a frame boundary */
first_video = ceil (first_video * c->video_frame_rate()) / c->video_frame_rate ();
}
- _video_pts_offset += first_video - old_first_video;
- _audio_pts_offset += first_video - old_first_video;
+ _pts_offset += first_video - old_first_video;
}
}
}
/* Stop us being asked for any more data */
- _video_position = _ffmpeg_content->video_length ();
+ _video_position = _ffmpeg_content->video_length_after_3d_combine ();
_audio_position = _ffmpeg_content->audio_length ();
}
av_strerror (r, buf, sizeof(buf));
shared_ptr<const Film> film = _film.lock ();
assert (film);
- film->log()->log (String::compose (N_("error on av_read_frame (%1) (%2)"), buf, r));
+ LOG_ERROR (N_("error on av_read_frame (%1) (%2)"), buf, r);
}
flush ();
return;
}
- avcodec_get_frame_defaults (_frame);
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
- if (_packet.stream_index == _video_stream && _decode_video) {
+ int const si = _packet.stream_index;
+
+ if (si == _video_stream && _decode_video) {
decode_video_packet ();
- } else if (_ffmpeg_content->audio_stream() && _packet.stream_index == _ffmpeg_content->audio_stream()->id && _decode_audio) {
+ } else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, si) && _decode_audio) {
decode_audio_packet ();
- } else if (_ffmpeg_content->subtitle_stream() && _packet.stream_index == _ffmpeg_content->subtitle_stream()->id) {
+ } else if (_ffmpeg_content->subtitle_stream() && _ffmpeg_content->subtitle_stream()->uses_index (_format_context, si) && film->with_subtitles ()) {
decode_subtitle_packet ();
}
shared_ptr<AudioBuffers> audio (new AudioBuffers (_ffmpeg_content->audio_channels(), frames));
switch (audio_sample_format()) {
+ case AV_SAMPLE_FMT_U8:
+ {
+ uint8_t* p = reinterpret_cast<uint8_t *> (data[0]);
+ int sample = 0;
+ int channel = 0;
+ for (int i = 0; i < total_samples; ++i) {
+ audio->data(channel)[sample] = float(*p++) / (1 << 23);
+
+ ++channel;
+ if (channel == _ffmpeg_content->audio_channels()) {
+ channel = 0;
+ ++sample;
+ }
+ }
+ }
+ break;
+
case AV_SAMPLE_FMT_S16:
{
int16_t* p = reinterpret_cast<int16_t *> (data[0]);
}
/* Initial seek time in the stream's timebase */
- int64_t const initial_vt = ((initial / _ffmpeg_content->video_frame_rate()) - _video_pts_offset) / time_base;
+ int64_t const initial_vt = ((initial / _ffmpeg_content->video_frame_rate()) - _pts_offset) / time_base;
av_seek_frame (_format_context, _video_stream, initial_vt, AVSEEK_FLAG_BACKWARD);
avcodec_flush_buffers (_subtitle_codec_context);
}
- _just_sought = true;
+ /* This !accurate is piling hack upon hack; setting _just_sought to true
+ even with accurate == true defeats our attempt to align the start
+ of the video and audio. Here we disable that defeat when accurate == true
+ i.e. when we are making a DCP rather than just previewing one.
+ Ewww. This should be gone in 2.0.
+ */
+ if (!accurate) {
+ _just_sought = true;
+ }
+
_video_position = frame;
if (frame == 0 || !accurate) {
}
if (_packet.stream_index != _video_stream) {
+ av_free_packet (&_packet);
continue;
}
- avcodec_get_frame_defaults (_frame);
-
int finished = 0;
r = avcodec_decode_video2 (video_codec_context(), _frame, &finished, &_packet);
if (r >= 0 && finished) {
_video_position = rint (
- (av_frame_get_best_effort_timestamp (_frame) * time_base + _video_pts_offset) * _ffmpeg_content->video_frame_rate()
+ (av_frame_get_best_effort_timestamp (_frame) * time_base + _pts_offset) * _ffmpeg_content->video_frame_rate()
);
if (_video_position >= (frame - 1)) {
av_free_packet (&_packet);
}
+
+ /* _video_position should be the next thing to be emitted, which will the one after the thing
+ we just saw.
+ */
+ _video_position++;
}
void
*/
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) {
- if (frame_finished) {
-
- if (_audio_position == 0) {
- /* Where we are in the source, in seconds */
- double const pts = av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
- * av_frame_get_best_effort_timestamp(_frame) + _audio_pts_offset;
+ if (decode_result < 0) {
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+ LOG_ERROR ("avcodec_decode_audio4 failed (%1)", decode_result);
+ return;
+ }
- if (pts > 0) {
- /* Emit some silence */
+ if (frame_finished) {
+
+ if (_audio_position == 0) {
+ /* Where we are in the source, in seconds */
+ double const pts = av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
+ * av_frame_get_best_effort_timestamp(_frame) + _pts_offset;
+
+ if (pts > 0) {
+ /* Emit some silence */
+ int64_t frames = pts * _ffmpeg_content->content_audio_frame_rate ();
+ while (frames > 0) {
+ int64_t const this_time = min (frames, (int64_t) _ffmpeg_content->content_audio_frame_rate() / 2);
+
shared_ptr<AudioBuffers> silence (
- new AudioBuffers (
- _ffmpeg_content->audio_channels(),
- pts * _ffmpeg_content->content_audio_frame_rate()
- )
+ new AudioBuffers (_ffmpeg_content->audio_channels(), this_time)
);
-
+
silence->make_silent ();
audio (silence, _audio_position);
+ frames -= this_time;
}
}
-
- int const data_size = av_samples_get_buffer_size (
- 0, audio_codec_context()->channels, _frame->nb_samples, audio_sample_format (), 1
- );
-
- audio (deinterleave_audio (_frame->data, data_size), _audio_position);
-
- copy_packet.data += decode_result;
- copy_packet.size -= decode_result;
}
+
+ int const data_size = av_samples_get_buffer_size (
+ 0, audio_codec_context()->channels, _frame->nb_samples, audio_sample_format (), 1
+ );
+
+ audio (deinterleave_audio (_frame->data, data_size), _audio_position);
}
+
+ copy_packet.data += decode_result;
+ copy_packet.size -= decode_result;
}
}
graph.reset (new FilterGraph (_ffmpeg_content, 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));
+ LOG_GENERAL (N_("New graph for %1x%2, pixel format %3"), _frame->width, _frame->height, _frame->format);
} else {
graph = *i;
}
list<pair<shared_ptr<Image>, int64_t> > images = graph->process (_frame);
- string post_process = Filter::ffmpeg_strings (_ffmpeg_content->filters()).second;
-
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
for (list<pair<shared_ptr<Image>, int64_t> >::iterator i = images.begin(); i != images.end(); ++i) {
shared_ptr<Image> image = i->first;
- if (!post_process.empty ()) {
- image = image->post_process (post_process, true);
- }
if (i->second != AV_NOPTS_VALUE) {
- double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _video_pts_offset;
+ double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _pts_offset;
if (_just_sought) {
/* We just did a seek, so disable any attempts to correct for where we
)
);
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
black->make_black ();
- video (image, false, _video_position);
+ video (shared_ptr<ImageProxy> (new RawImageProxy (image, film->log())), false, _video_position);
delta -= one_frame;
}
if (delta > -one_frame) {
/* This PTS is within a frame of being right; emit this (otherwise it will be dropped) */
- video (image, false, _video_position);
+ video (shared_ptr<ImageProxy> (new RawImageProxy (image, film->log())), false, _video_position);
}
} else {
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
- film->log()->log ("Dropping frame without PTS");
+ LOG_WARNING ("Dropping frame without PTS");
}
}
{
boost::mutex::scoped_lock lm (_mutex);
- if (!_ffmpeg_content->subtitle_stream() || _ffmpeg_content->subtitle_stream()->id >= int (_format_context->nb_streams)) {
+ if (!_ffmpeg_content->subtitle_stream()) {
return;
}
- _subtitle_codec_context = _format_context->streams[_ffmpeg_content->subtitle_stream()->id]->codec;
+ _subtitle_codec_context = _ffmpeg_content->subtitle_stream()->stream(_format_context)->codec;
+ if (_subtitle_codec_context == 0) {
+ throw DecodeError (N_("could not find subtitle stream"));
+ }
+
_subtitle_codec = avcodec_find_decoder (_subtitle_codec_context->codec_id);
if (_subtitle_codec == 0) {
- throw DecodeError (_("could not find subtitle decoder"));
+ throw DecodeError (N_("could not find subtitle decoder"));
}
if (avcodec_open2 (_subtitle_codec_context, _subtitle_codec, 0) < 0) {
/* Subtitle PTS in seconds (within the source, not taking into account any of the
source that we may have chopped off for the DCP)
*/
- double const packet_time = static_cast<double> (sub.pts) / AV_TIME_BASE;
-
+ double const packet_time = (static_cast<double> (sub.pts ) / AV_TIME_BASE) + _pts_offset;
+
/* hence start time for this sub */
Time const from = (packet_time + (double (sub.start_display_time) / 1e3)) * TIME_HZ;
Time const to = (packet_time + (double (sub.end_display_time) / 1e3)) * TIME_HZ;
if (rect->type != SUBTITLE_BITMAP) {
throw DecodeError (_("non-bitmap subtitles not yet supported"));
}
-
+
+ /* Note RGBA is expressed little-endian, so the first byte in the word is R, second
+ G, third B, fourth A.
+ */
shared_ptr<Image> image (new Image (PIX_FMT_RGBA, libdcp::Size (rect->w, rect->h), true));
/* Start of the first line in the subtitle */
uint8_t* sub_p = rect->pict.data[0];
- /* sub_p looks up into a RGB palette which is here */
+ /* sub_p looks up into a BGRA palette which is here
+ (i.e. first byte B, second G, third R, fourth A)
+ */
uint32_t const * palette = (uint32_t *) rect->pict.data[1];
/* Start of the output data */
uint32_t* out_p = (uint32_t *) 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;
for (int x = 0; x < rect->w; ++x) {
- *out_line_p++ = palette[*sub_line_p++];
+ uint32_t const p = palette[*sub_line_p++];
+ *out_line_p++ = ((p & 0xff) << 16) | (p & 0xff00) | ((p & 0xff0000) >> 16) | (p & 0xff000000);
}
sub_p += rect->pict.linesize[0];
out_p += image->stride()[0] / sizeof (uint32_t);
projects / dcpomatic.git / blobdiff