#include <iostream>
#include <stdint.h>
+#include <boost/lexical_cast.hpp>
extern "C" {
#include <libavfilter/avfiltergraph.h>
+#include <libavfilter/buffersrc.h>
+#if (LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 53 && LIBAVFILTER_VERSION_MINOR <= 77) || LIBAVFILTER_VERSION_MAJOR == 3
+#include <libavfilter/avcodec.h>
+#include <libavfilter/buffersink.h>
+#elif LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
#include <libavfilter/vsrc_buffer.h>
+#endif
#include <libavformat/avio.h>
}
#include "film.h"
, _have_setup_video_filters (false)
, _delay_line (0)
, _delay_in_bytes (0)
+ , _audio_frames_processed (0)
{
if (_opt->decode_video_frequency != 0 && _fs->length == 0) {
throw DecodeError ("cannot do a partial decode if length == 0");
delete _delay_line;
}
+/** Start off a decode processing run */
void
Decoder::process_begin ()
{
- /* This assumes 2 bytes per sample */
- _delay_in_bytes = _fs->audio_delay * _fs->audio_sample_rate * _fs->audio_channels * 2 / 1000;
+ _delay_in_bytes = _fs->audio_delay * _fs->audio_sample_rate * _fs->audio_channels * _fs->bytes_per_sample() / 1000;
delete _delay_line;
_delay_line = new DelayLine (_delay_in_bytes);
+
+ _audio_frames_processed = 0;
}
+/** Finish off a decode processing run */
void
Decoder::process_end ()
{
if (_delay_in_bytes < 0) {
uint8_t remainder[-_delay_in_bytes];
_delay_line->get_remaining (remainder);
+ _audio_frames_processed += _delay_in_bytes / (_fs->audio_channels * _fs->bytes_per_sample());
Audio (remainder, _delay_in_bytes);
}
+
+ /* If we cut the decode off, the audio may be short; push some silence
+ in to get it to the right length.
+ */
+
+ int64_t const audio_short_by_frames =
+ ((int64_t) decoding_frames() * _fs->target_sample_rate() / _fs->frames_per_second)
+ - _audio_frames_processed;
+
+ if (audio_short_by_frames >= 0) {
+
+ stringstream s;
+ s << "Adding " << audio_short_by_frames << " frames of silence to the end.";
+ _log->log (s.str ());
+
+ int64_t bytes = audio_short_by_frames * _fs->audio_channels * _fs->bytes_per_sample();
+
+ int64_t const silence_size = 64 * 1024;
+ uint8_t silence[silence_size];
+ memset (silence, 0, silence_size);
+
+ while (bytes) {
+ int64_t const t = min (bytes, silence_size);
+ Audio (silence, t);
+ bytes -= t;
+ }
+ }
}
/** Start decoding */
return do_pass ();
}
-/** Called by subclasses to tell the world that some audio data is ready */
+/** Called by subclasses to tell the world that some audio data is ready
+ * @param data Interleaved audio data, in FilmState::audio_sample_format.
+ * @param size Number of bytes of data.
+ */
void
-Decoder::process_audio (uint8_t* data, int channels, int size)
+Decoder::process_audio (uint8_t* data, int size)
{
+ /* Samples per channel */
+ int const samples = size / _fs->bytes_per_sample();
+
+ /* Maybe apply gain */
if (_fs->audio_gain != 0) {
float const linear_gain = pow (10, _fs->audio_gain / 20);
uint8_t* p = data;
- int const samples = size / 2;
switch (_fs->audio_sample_format) {
case AV_SAMPLE_FMT_S16:
for (int i = 0; i < samples; ++i) {
/* XXX: assumes little-endian; also we should probably be dithering here */
+
+ /* unsigned sample */
int const ou = p[0] | (p[1] << 8);
+
+ /* signed sample */
int const os = ou >= 0x8000 ? (- 0x10000 + ou) : ou;
+
+ /* signed sample with altered gain */
int const gs = int (os * linear_gain);
+
+ /* unsigned sample with altered gain */
int const gu = gs > 0 ? gs : (0x10000 + gs);
+
+ /* write it back */
p[0] = gu & 0xff;
p[1] = (gu & 0xff00) >> 8;
p += 2;
}
}
+ /* Update the number of audio frames we've pushed to the encoder */
+ _audio_frames_processed += size / (_fs->audio_channels * _fs->bytes_per_sample ());
+
+ /* Push into the delay line and then tell the world what we've got */
int available = _delay_line->feed (data, size);
Audio (data, available);
}
return;
}
-#ifdef DVDOMATIC_FFMPEG_0_8_3
-
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 53 && LIBAVFILTER_VERSION_MINOR <= 61
+
+ if (av_vsrc_buffer_add_frame (_buffer_src_context, frame, 0) < 0) {
+ throw DecodeError ("could not push buffer into filter chain.");
+ }
+
+#elif LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
+
AVRational par;
par.num = sample_aspect_ratio_numerator ();
par.den = sample_aspect_ratio_denominator ();
#else
- if (av_vsrc_buffer_add_frame (_buffer_src_context, frame, 0) < 0) {
+ if (av_buffersrc_write_frame (_buffer_src_context, frame) < 0) {
throw DecodeError ("could not push buffer into filter chain.");
}
#endif
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 15 && LIBAVFILTER_VERSION_MINOR <= 61
while (avfilter_poll_frame (_buffer_sink_context->inputs[0])) {
+#else
+ while (av_buffersink_read (_buffer_sink_context, 0)) {
+#endif
-#ifdef DVDOMATIC_FFMPEG_0_8_3
-
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 15
+
int r = avfilter_request_frame (_buffer_sink_context->inputs[0]);
if (r < 0) {
throw DecodeError ("could not request filtered frame");
#else
AVFilterBufferRef* filter_buffer;
- if (avbuffersink_get_buffer_ref (_buffer_sink_context, &filter_buffer, 0) < 0) {
+ if (av_buffersink_get_buffer_ref (_buffer_sink_context, &filter_buffer, 0) < 0) {
filter_buffer = 0;
}
image->make_black ();
}
+ overlay (image);
+
+ TIMING ("Decoder emits %1", _video_frame);
Video (image, _video_frame);
++_video_frame;
}
}
}
+
+/** Set up a video filtering chain to include cropping and any filters that are specified
+ * by the Film.
+ */
void
Decoder::setup_video_filters ()
{
if (_opt->apply_crop) {
size_after_crop = _fs->cropped_size (native_size ());
- fs << crop_string (Position (_fs->left_crop, _fs->top_crop), size_after_crop);
+ fs << crop_string (Position (_fs->crop.left, _fs->crop.top), size_after_crop);
} else {
size_after_crop = native_size ();
fs << crop_string (Position (0, 0), size_after_crop);
<< sample_aspect_ratio_denominator();
int r;
+
if ((r = avfilter_graph_create_filter (&_buffer_src_context, buffer_src, "in", a.str().c_str(), 0, graph)) < 0) {
throw DecodeError ("could not create buffer source");
}
- enum PixelFormat pixel_formats[] = { pixel_format(), PIX_FMT_NONE };
- if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, "out", 0, pixel_formats, graph) < 0) {
+ AVBufferSinkParams* sink_params = av_buffersink_params_alloc ();
+ PixelFormat* pixel_fmts = new PixelFormat[2];
+ pixel_fmts[0] = pixel_format ();
+ pixel_fmts[1] = PIX_FMT_NONE;
+ sink_params->pixel_fmts = pixel_fmts;
+
+ if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, "out", 0, sink_params, graph) < 0) {
throw DecodeError ("could not create buffer sink.");
}
inputs->next = 0;
_log->log ("Using filter chain `" + filters + "'");
-#ifdef DVDOMATIC_FFMPEG_0_8_3
+
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
if (avfilter_graph_parse (graph, filters.c_str(), inputs, outputs, 0) < 0) {
-#else
+ throw DecodeError ("could not set up filter graph.");
+ }
+#else
if (avfilter_graph_parse (graph, filters.c_str(), &inputs, &outputs, 0) < 0) {
-#endif
-
throw DecodeError ("could not set up filter graph.");
}
-
+#endif
+
if (avfilter_graph_config (graph, 0) < 0) {
throw DecodeError ("could not configure filter graph.");
}
projects / dcpomatic.git / blobdiff