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Add libswresample and libavresample support for sounds.

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This commit is contained in:
cc9cii 2014-09-11 21:15:18 +10:00
parent 862c5fc8f6
commit 48a36442c6
3 changed files with 191 additions and 73 deletions
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110
apps/openmw/mwrender/videoplayer.cpp
View File

@ -53,68 +53,66 @@ extern "C"
#endif
// WARNING: avcodec versions up to 54.54.100 potentially crashes on Windows 64bit.
}
// From version 54.56 binkaudio encoding format changed from S16 to FLTP. See:
// https://gitorious.org/ffmpeg/ffmpeg/commit/7bfd1766d1c18f07b0a2dd042418a874d49ea60d
// http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=15&t=872
extern "C" {
#ifdef HAVE_LIBSWRESAMPLE
#include <libswresample/swresample.h>
#else
/* nasty hack for systems without libswresample */
#include <libavresample/avresample.h>
#include <libavutil/opt.h>
// From version 54.56 binkaudio encoding format changed from S16 to FLTP. See:
// https://gitorious.org/ffmpeg/ffmpeg/commit/7bfd1766d1c18f07b0a2dd042418a874d49ea60d
// http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=15&t=872
#ifdef HAVE_LIBSWRESAMPLE
#include <libswresample/swresample.h>
#else
#include <libavresample/avresample.h>
#include <libavutil/opt.h>
/* FIXME: remove this section once libswresample is available on all platforms */
int swr_convert(
AVAudioResampleContext *avr,
uint8_t** output,
int out_samples,
const uint8_t** input,
int in_samples)
{
// FIXME: potential performance hit
int out_plane_size = 0;
int in_plane_size = 0;
return avresample_convert(avr, output, out_plane_size, out_samples,
(uint8_t **)input, in_plane_size, in_samples);
}
AVAudioResampleContext * swr_alloc_set_opts(
AVAudioResampleContext *avr,
int64_t out_ch_layout,
AVSampleFormat out_fmt,
int out_rate,
int64_t in_ch_layout,
AVSampleFormat in_fmt,
int in_rate,
int o,
void* l)
{
avr = avresample_alloc_context();
if(!avr)
return 0;
if ((av_opt_set_int(avr, "out_channel_layout", out_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_fmt", out_fmt, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_rate", out_rate, 0) < 0) ||
(av_opt_set_int(avr, "in_channel_layout", in_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_fmt", in_fmt, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_rate", in_rate, 0) < 0))
int swr_convert(
AVAudioResampleContext *avr,
uint8_t** output,
int out_samples,
const uint8_t** input,
int in_samples)
{
return 0;
// FIXME: potential performance hit
int out_plane_size = 0;
int in_plane_size = 0;
return avresample_convert(avr, output, out_plane_size, out_samples,
(uint8_t **)input, in_plane_size, in_samples);
}
if(avresample_open(avr) < 0)
return 0;
else
return avr;
}
AVAudioResampleContext * swr_alloc_set_opts(
AVAudioResampleContext *avr,
int64_t out_ch_layout,
AVSampleFormat out_fmt,
int out_rate,
int64_t in_ch_layout,
AVSampleFormat in_fmt,
int in_rate,
int o,
void* l)
{
avr = avresample_alloc_context();
if(!avr)
return 0;
void swr_free(AVAudioResampleContext **avr) { avresample_free(avr); }
int swr_init(AVAudioResampleContext *avr) { return 1; }
#define SwrContext AVAudioResampleContext
#endif
if ((av_opt_set_int(avr, "out_channel_layout", out_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_fmt", out_fmt, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_rate", out_rate, 0) < 0) ||
(av_opt_set_int(avr, "in_channel_layout", in_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_fmt", in_fmt, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_rate", in_rate, 0) < 0))
{
return 0;
}
if(avresample_open(avr) < 0)
return 0;
else
return avr;
}
void swr_free(AVAudioResampleContext **avr) { avresample_free(avr); }
int swr_init(AVAudioResampleContext *avr) { return 1; }
#define SwrContext AVAudioResampleContext
#endif
}
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)

133
apps/openmw/mwsound/ffmpeg_decoder.cpp
View File

@ -5,6 +5,58 @@
#include <stdexcept>
#ifndef HAVE_LIBSWRESAMPLE
/* FIXME: remove this section once libswresample is available on all platforms */
int swr_convert(
AVAudioResampleContext *avr,
uint8_t** output,
int out_samples,
const uint8_t** input,
int in_samples)
{
// FIXME: potential performance hit
int out_plane_size = 0;
int in_plane_size = 0;
return avresample_convert(avr, output, out_plane_size, out_samples,
(uint8_t **)input, in_plane_size, in_samples);
}
AVAudioResampleContext * swr_alloc_set_opts(
AVAudioResampleContext *avr,
int64_t out_ch_layout,
AVSampleFormat out_fmt,
int out_rate,
int64_t in_ch_layout,
AVSampleFormat in_fmt,
int in_rate,
int o,
void* l)
{
avr = avresample_alloc_context();
if(!avr)
return 0;
if ((av_opt_set_int(avr, "out_channel_layout", out_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_fmt", out_fmt, 0) < 0) ||
(av_opt_set_int(avr, "out_sample_rate", out_rate, 0) < 0) ||
(av_opt_set_int(avr, "in_channel_layout", in_ch_layout, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_fmt", in_fmt, 0) < 0) ||
(av_opt_set_int(avr, "in_sample_rate", in_rate, 0) < 0))
{
return 0;
}
if(avresample_open(avr) < 0)
return 0;
else
return avr;
}
void swr_free(AVAudioResampleContext **avr) { avresample_free(avr); }
int swr_init(AVAudioResampleContext *avr) { return 1; }
#endif
namespace MWSound
{
@ -95,6 +147,29 @@ bool FFmpeg_Decoder::getAVAudioData()
memmove(mPacket.data, &mPacket.data[len], remaining);
av_shrink_packet(&mPacket, remaining);
}
if(mSwr)
{
if(!mDataBuf || mDataBufLen < mFrame->nb_samples)
{
av_freep(&mDataBuf);
if(av_samples_alloc(&mDataBuf, NULL, (*mStream)->codec->channels,
mFrame->nb_samples, mOutputSampleFormat, 0) < 0)
break;
else
mDataBufLen = mFrame->nb_samples;
}
if(swr_convert(mSwr, (uint8_t**)&mDataBuf, mFrame->nb_samples,
(const uint8_t**)mFrame->extended_data, mFrame->nb_samples) < 0)
{
break;
}
mFrameData = &mDataBuf;
}
else
mFrameData = &mFrame->data[0];
} while(got_frame == 0 || mFrame->nb_samples == 0);
mNextPts += (double)mFrame->nb_samples / (double)(*mStream)->codec->sample_rate;
@ -122,7 +197,7 @@ size_t FFmpeg_Decoder::readAVAudioData(void *data, size_t length)
size_t rem = std::min<size_t>(length-dec, mFrameSize-mFramePos);
/* Copy the data to the app's buffer and increment */
memcpy(data, mFrame->data[0]+mFramePos, rem);
memcpy(data, mFrameData[0]+mFramePos, rem);
data = (char*)data + rem;
dec += rem;
mFramePos += rem;
@ -132,19 +207,6 @@ size_t FFmpeg_Decoder::readAVAudioData(void *data, size_t length)
return dec;
}
static AVSampleFormat ffmpegNonPlanarSampleFormat (AVSampleFormat format)
{
switch (format)
{
case AV_SAMPLE_FMT_U8P: return AV_SAMPLE_FMT_U8;
case AV_SAMPLE_FMT_S16P: return AV_SAMPLE_FMT_S16;
case AV_SAMPLE_FMT_S32P: return AV_SAMPLE_FMT_S32;
case AV_SAMPLE_FMT_FLTP: return AV_SAMPLE_FMT_FLT;
case AV_SAMPLE_FMT_DBLP: return AV_SAMPLE_FMT_DBL;
default:return format;
}
}
void FFmpeg_Decoder::open(const std::string &fname)
{
close();
@ -191,7 +253,7 @@ void FFmpeg_Decoder::open(const std::string &fname)
if(!mStream)
fail("No audio streams in "+fname);
(*mStream)->codec->request_sample_fmt = ffmpegNonPlanarSampleFormat ((*mStream)->codec->sample_fmt);
(*mStream)->codec->request_sample_fmt = (*mStream)->codec->sample_fmt;
AVCodec *codec = avcodec_find_decoder((*mStream)->codec->codec_id);
if(!codec)
@ -203,7 +265,7 @@ void FFmpeg_Decoder::open(const std::string &fname)
if(avcodec_open2((*mStream)->codec, codec, NULL) < 0)
fail("Failed to open audio codec " + std::string(codec->long_name));
mFrame = avcodec_alloc_frame();
mFrame = av_frame_alloc();
}
catch(std::exception&)
{
@ -228,6 +290,8 @@ void FFmpeg_Decoder::close()
av_free_packet(&mPacket);
av_freep(&mFrame);
swr_free(&mSwr);
av_freep(&mDataBuf);
if(mFormatCtx)
{
@ -268,6 +332,12 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
*type = SampleType_Int16;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_FLT)
*type = SampleType_Float32;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_U8P)
*type = SampleType_UInt8;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_S16P)
*type = SampleType_Int16;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_FLTP)
*type = SampleType_Float32;
else
fail(std::string("Unsupported sample format: ")+
av_get_sample_fmt_name((*mStream)->codec->sample_fmt));
@ -305,6 +375,30 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
}
*samplerate = (*mStream)->codec->sample_rate;
if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_U8P)
mOutputSampleFormat = AV_SAMPLE_FMT_U8;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_S16P)
mOutputSampleFormat = AV_SAMPLE_FMT_S16;
else if((*mStream)->codec->sample_fmt == AV_SAMPLE_FMT_FLTP)
mOutputSampleFormat = AV_SAMPLE_FMT_FLT;
if(mOutputSampleFormat != AV_SAMPLE_FMT_NONE)
{
mSwr = swr_alloc_set_opts(mSwr, // SwrContext
(*mStream)->codec->channel_layout, // output ch layout
mOutputSampleFormat, // output sample format
(*mStream)->codec->sample_rate, // output sample rate
(*mStream)->codec->channel_layout, // input ch layout
(*mStream)->codec->sample_fmt, // input sample format
(*mStream)->codec->sample_rate, // input sample rate
0, // logging level offset
NULL); // log context
if(!mSwr)
fail(std::string("Couldn't allocate SwrContext"));
if(swr_init(mSwr) < 0)
fail(std::string("Couldn't initialize SwrContext"));
}
}
size_t FFmpeg_Decoder::read(char *buffer, size_t bytes)
@ -323,7 +417,7 @@ void FFmpeg_Decoder::readAll(std::vector<char> &output)
{
size_t got = mFrame->nb_samples * (*mStream)->codec->channels *
av_get_bytes_per_sample((*mStream)->codec->sample_fmt);
const char *inbuf = reinterpret_cast<char*>(mFrame->data[0]);
const char *inbuf = reinterpret_cast<char*>(mFrameData[0]);
output.insert(output.end(), inbuf, inbuf+got);
}
}
@ -352,6 +446,11 @@ FFmpeg_Decoder::FFmpeg_Decoder()
, mFrameSize(0)
, mFramePos(0)
, mNextPts(0.0)
, mSwr(0)
, mOutputSampleFormat(AV_SAMPLE_FMT_NONE)
, mDataBuf(NULL)
, mFrameData(NULL)
, mDataBufLen(0)
{
memset(&mPacket, 0, sizeof(mPacket));

21
apps/openmw/mwsound/ffmpeg_decoder.hpp
View File

@ -18,6 +18,21 @@ extern "C"
LIBAVUTIL_VERSION_MINOR, LIBAVUTIL_VERSION_MICRO)
#include <libavutil/channel_layout.h>
#endif
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
#define av_frame_alloc avcodec_alloc_frame
#endif
// From version 54.56 binkaudio encoding format changed from S16 to FLTP. See:
// https://gitorious.org/ffmpeg/ffmpeg/commit/7bfd1766d1c18f07b0a2dd042418a874d49ea60d
// http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=15&t=872
#ifdef HAVE_LIBSWRESAMPLE
#include <libswresample/swresample.h>
#else
#include <libavresample/avresample.h>
#include <libavutil/opt.h>
#define SwrContext AVAudioResampleContext
#endif
}
#include <string>
@ -40,6 +55,12 @@ namespace MWSound
double mNextPts;
SwrContext *mSwr;
enum AVSampleFormat mOutputSampleFormat;
uint8_t *mDataBuf;
uint8_t **mFrameData;
int mDataBufLen;
bool getNextPacket();
Ogre::DataStreamPtr mDataStream;