/*
- 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 <libavformat/avformat.h>
}
-#include "film.h"
#include "filter.h"
#include "exceptions.h"
#include "image.h"
#include "filter_graph.h"
#include "audio_buffers.h"
#include "ffmpeg_content.h"
+#include "image_proxy.h"
#include "i18n.h"
using boost::shared_ptr;
using boost::optional;
using boost::dynamic_pointer_cast;
-using libdcp::Size;
+using dcp::Size;
-FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<const FFmpegContent> c, bool video, bool audio)
- : Decoder (f)
- , VideoDecoder (f, c)
- , AudioDecoder (f, c)
- , SubtitleDecoder (f)
+FFmpegDecoder::FFmpegDecoder (shared_ptr<const FFmpegContent> c, shared_ptr<Log> log)
+ : VideoDecoder (c)
+ , AudioDecoder (c)
, FFmpeg (c)
+ , _log (log)
, _subtitle_codec_context (0)
, _subtitle_codec (0)
- , _decode_video (video)
- , _decode_audio (audio)
- , _video_pts_offset (0)
- , _audio_pts_offset (0)
{
setup_subtitle ();
Then we remove big initial gaps in PTS and we allow our
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;
+ We will do pts_to_use = pts_from_ffmpeg + pts_offset;
*/
- bool const have_video = video && c->first_video();
- bool const have_audio = _decode_audio && c->audio_stream () && c->audio_stream()->first_audio;
+ bool const have_video = c->first_video();
+ bool const have_audio = c->audio_stream () && c->audio_stream()->first_audio;
/* 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) {
- _audio_pts_offset = - c->audio_stream()->first_audio.get();
+ _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 const old_first_video = first_video;
-
- /* Round the first video up to a frame boundary */
- if (fabs (rint (first_video * c->video_frame_rate()) - first_video * c->video_frame_rate()) > 1e-6) {
- 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;
+ ContentTime first_video = c->first_video().get() + _pts_offset;
+ ContentTime const old_first_video = first_video;
+ _pts_offset += first_video.round_up (c->video_frame_rate ()) - old_first_video;
}
}
/* XXX: should we reset _packet.data and size after each *_decode_* call? */
- if (_decode_video) {
- while (decode_video_packet ()) {}
- }
+ while (decode_video_packet ()) {}
- if (_ffmpeg_content->audio_stream() && _decode_audio) {
+ if (_ffmpeg_content->audio_stream()) {
decode_audio_packet ();
+ AudioDecoder::flush ();
}
-
- AudioDecoder::flush ();
}
bool
/* Maybe we should fail here, but for now we'll just finish off instead */
char buf[256];
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->log (String::compose (N_("error on av_read_frame (%1) (%2)"), buf, r));
}
flush ();
return true;
}
- avcodec_get_frame_defaults (_frame);
-
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
-
int const si = _packet.stream_index;
- if (si == _video_stream && _decode_video) {
+ if (si == _video_stream) {
decode_video_packet ();
- } else if (_ffmpeg_content->audio_stream() && si == _ffmpeg_content->audio_stream()->index (_format_context) && _decode_audio) {
+ } else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, si)) {
decode_audio_packet ();
- } else if (_ffmpeg_content->subtitle_stream() && si == _ffmpeg_content->subtitle_stream()->index (_format_context) && film->with_subtitles ()) {
+ } else if (_ffmpeg_content->subtitle_stream() && _ffmpeg_content->subtitle_stream()->uses_index (_format_context, si)) {
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]);
}
int
-FFmpegDecoder::minimal_run (boost::function<bool (ContentTime, ContentTime, int)> finished)
+FFmpegDecoder::minimal_run (boost::function<bool (optional<ContentTime>, optional<ContentTime>, int)> finished)
{
int frames_read = 0;
- ContentTime last_video = 0;
- ContentTime last_audio = 0;
- bool flushing = false;
+ optional<ContentTime> last_video;
+ optional<ContentTime> last_audio;
while (!finished (last_video, last_audio, frames_read)) {
int r = av_read_frame (_format_context, &_packet);
avcodec_get_frame_defaults (_frame);
- int finished = 0;
- r = avcodec_decode_video2 (video_codec_context(), _frame, &finished, &_packet);
- if (r >= 0 && finished) {
- last_video = rint (
- (av_frame_get_best_effort_timestamp (_frame) * time_base + _video_pts_offset) * TIME_HZ
- );
+ int got_picture = 0;
+ r = avcodec_decode_video2 (video_codec_context(), _frame, &got_picture, &_packet);
+ if (r >= 0 && got_picture) {
+ last_video = ContentTime::from_seconds (av_frame_get_best_effort_timestamp (_frame) * time_base) + _pts_offset;
}
-
- } else if (_ffmpeg_content->audio_stream() && _packet.stream_index == _ffmpeg_content->audio_stream()->index (_format_context)) {
+
+ } else if (_ffmpeg_content->audio_stream() && _ffmpeg_content->audio_stream()->uses_index (_format_context, _packet.stream_index)) {
AVPacket copy_packet = _packet;
while (copy_packet.size > 0) {
- int finished;
- r = avcodec_decode_audio4 (audio_codec_context(), _frame, &finished, &_packet);
- if (r >= 0 && finished) {
- last_audio = rint (
- (av_frame_get_best_effort_timestamp (_frame) * time_base + _audio_pts_offset) * TIME_HZ
- );
+ int got_frame;
+ r = avcodec_decode_audio4 (audio_codec_context(), _frame, &got_frame, &_packet);
+ if (r >= 0 && got_frame) {
+ last_audio = ContentTime::from_seconds (av_frame_get_best_effort_timestamp (_frame) * time_base) + _pts_offset;
}
copy_packet.data += r;
}
bool
-FFmpegDecoder::seek_overrun_finished (ContentTime seek, ContentTime last_video, ContentTime last_audio) const
+FFmpegDecoder::seek_overrun_finished (ContentTime seek, optional<ContentTime> last_video, optional<ContentTime> last_audio) const
{
- return last_video >= seek || last_audio >= seek;
+ return (last_video && last_video.get() >= seek) || (last_audio && last_audio.get() >= seek);
}
bool
void
FFmpegDecoder::seek_and_flush (ContentTime t)
{
- int64_t const initial_v = ((double (t) / TIME_HZ) - _video_pts_offset) /
- av_q2d (_format_context->streams[_video_stream]->time_base);
+ ContentTime const u = t - _pts_offset;
+ int64_t s = u.seconds() / av_q2d (_format_context->streams[_video_stream]->time_base);
- av_seek_frame (_format_context, _video_stream, initial_v, AVSEEK_FLAG_BACKWARD);
-
- shared_ptr<FFmpegAudioStream> as = _ffmpeg_content->audio_stream ();
- if (as) {
- int64_t initial_a = ((double (t) / TIME_HZ) - _audio_pts_offset) /
- av_q2d (as->stream(_format_context)->time_base);
+ if (_ffmpeg_content->audio_stream ()) {
+ s = min (
+ s, int64_t (u.seconds() / av_q2d (_ffmpeg_content->audio_stream()->stream(_format_context)->time_base))
+ );
+ }
- av_seek_frame (_format_context, as->index (_format_context), initial_a, AVSEEK_FLAG_BACKWARD);
+ /* Ridiculous empirical hack */
+ s--;
+ if (s < 0) {
+ s = 0;
}
+ av_seek_frame (_format_context, _video_stream, s, 0);
+
avcodec_flush_buffers (video_codec_context());
if (audio_codec_context ()) {
avcodec_flush_buffers (audio_codec_context ());
void
FFmpegDecoder::seek (ContentTime time, bool accurate)
{
- Decoder::seek (time, accurate);
+ VideoDecoder::seek (time, accurate);
+ AudioDecoder::seek (time, accurate);
- /* If we are doing an accurate seek, our initial shot will be 200ms (200 being
+ /* If we are doing an accurate seek, our initial shot will be 2s (2 being
a number plucked from the air) earlier than we want to end up. The loop below
will hopefully then step through to where we want to be.
*/
- ContentTime pre_roll = accurate ? (0.2 * TIME_HZ) : 0;
+ ContentTime pre_roll = accurate ? ContentTime::from_seconds (2) : ContentTime (0);
ContentTime initial_seek = time - pre_roll;
- if (initial_seek < 0) {
- initial_seek = 0;
+ if (initial_seek < ContentTime (0)) {
+ initial_seek = ContentTime (0);
}
-
+
/* Initial seek time in the video stream's timebase */
seek_and_flush (initial_seek);
- if (time == 0 || !accurate) {
- /* We're already there, or we're as close as we need to be */
+ if (!accurate) {
+ /* That'll do */
return;
}
int const N = minimal_run (boost::bind (&FFmpegDecoder::seek_overrun_finished, this, time, _1, _2));
-
+
seek_and_flush (initial_seek);
if (N > 0) {
minimal_run (boost::bind (&FFmpegDecoder::seek_final_finished, this, N - 1, _3));
int const decode_result = avcodec_decode_audio4 (audio_codec_context(), _frame, &frame_finished, ©_packet);
if (decode_result < 0) {
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
- film->log()->log (String::compose ("avcodec_decode_audio4 failed (%1)", decode_result));
+ _log->log (String::compose ("avcodec_decode_audio4 failed (%1)", decode_result));
return;
}
if (frame_finished) {
- ContentTime const t = rint (
- (av_q2d (_format_context->streams[copy_packet.stream_index]->time_base)
- * av_frame_get_best_effort_timestamp(_frame) + _audio_pts_offset) * TIME_HZ
- );
-
+ ContentTime const ct = ContentTime::from_seconds (
+ av_frame_get_best_effort_timestamp (_frame) *
+ av_q2d (_ffmpeg_content->audio_stream()->stream (_format_context)->time_base))
+ + _pts_offset;
+
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), t);
+
+ audio (deinterleave_audio (_frame->data, data_size), ct);
}
copy_packet.data += decode_result;
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)) {
+ while (i != _filter_graphs.end() && !(*i)->can_process (dcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format)) {
++i;
}
if (i == _filter_graphs.end ()) {
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
-
- graph.reset (new FilterGraph (_ffmpeg_content, libdcp::Size (_frame->width, _frame->height), (AVPixelFormat) _frame->format));
+ graph.reset (new FilterGraph (_ffmpeg_content, dcp::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->log (String::compose (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;
-
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) {
- ContentTime const t = rint ((i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _video_pts_offset) * TIME_HZ);
- video (image, false, t);
+ double const pts = i->second * av_q2d (_format_context->streams[_video_stream]->time_base) + _pts_offset.seconds ();
+ video (shared_ptr<ImageProxy> (new RawImageProxy (image)), rint (pts * _ffmpeg_content->video_frame_rate ()));
} else {
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
- film->log()->log ("Dropping frame without PTS");
+ _log->log ("Dropping frame without PTS");
}
}
{
boost::mutex::scoped_lock lm (_mutex);
- if (!_ffmpeg_content->subtitle_stream() || _ffmpeg_content->subtitle_stream()->index (_format_context) >= int (_format_context->nb_streams)) {
+ if (!_ffmpeg_content->subtitle_stream()) {
return;
}
_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) {
indicate that the previous subtitle should stop.
*/
if (sub.num_rects <= 0) {
- subtitle (shared_ptr<Image> (), dcpomatic::Rect<double> (), 0, 0);
+ image_subtitle (ContentTime (), ContentTime (), shared_ptr<Image> (), dcpomatic::Rect<double> ());
return;
} else if (sub.num_rects > 1) {
throw DecodeError (_("multi-part subtitles not yet supported"));
}
- /* Subtitle PTS in seconds (within the source, not taking into account any of the
+ /* Subtitle PTS (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;
+ ContentTime packet_time = ContentTime::from_seconds (static_cast<double> (sub.pts) / AV_TIME_BASE) + _pts_offset;
/* hence start time for this sub */
- DCPTime const from = (packet_time + (double (sub.start_display_time) / 1e3)) * TIME_HZ;
- DCPTime const to = (packet_time + (double (sub.end_display_time) / 1e3)) * TIME_HZ;
+ ContentTime const from = packet_time + ContentTime::from_seconds (sub.start_display_time / 1e3);
+ ContentTime const to = packet_time + ContentTime::from_seconds (sub.end_display_time / 1e3);
AVSubtitleRect const * rect = sub.rects[0];
if (rect->type != SUBTITLE_BITMAP) {
- throw DecodeError (_("non-bitmap subtitles not yet supported"));
+ /* XXX */
+ // throw DecodeError (_("non-bitmap subtitles not yet supported"));
+ return;
}
-
- shared_ptr<Image> image (new Image (PIX_FMT_RGBA, libdcp::Size (rect->w, rect->h), true));
+
+ /* 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, dcp::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);
}
- libdcp::Size const vs = _ffmpeg_content->video_size ();
+ dcp::Size const vs = _ffmpeg_content->video_size ();
- subtitle (
+ image_subtitle (
+ from,
+ to,
image,
dcpomatic::Rect<double> (
static_cast<double> (rect->x) / vs.width,
static_cast<double> (rect->y) / vs.height,
static_cast<double> (rect->w) / vs.width,
static_cast<double> (rect->h) / vs.height
- ),
- from,
- to
+ )
);
-
avsubtitle_free (&sub);
}
projects / dcpomatic.git / blobdiff