@ -3,7 +3,7 @@
# include <memory>
# include <stdexcept>
# include < s stream>
# include < io stream>
# include <algorithm>
# include <components/vfs/manager.hpp>
@ -11,11 +11,6 @@
namespace MWSound
{
void FFmpeg_Decoder : : fail ( const std : : string & msg )
{
throw std : : runtime_error ( " FFmpeg exception: " + msg ) ;
}
int FFmpeg_Decoder : : readPacket ( void * user_data , uint8_t * buf , int buf_size )
{
try
@ -33,7 +28,8 @@ int FFmpeg_Decoder::readPacket(void *user_data, uint8_t *buf, int buf_size)
int FFmpeg_Decoder : : writePacket ( void * , uint8_t * , int )
{
throw std : : runtime_error ( " can't write to read-only stream " ) ;
std : : cerr < < " can't write to read-only stream " < < std : : endl ;
return - 1 ;
}
int64_t FFmpeg_Decoder : : seek ( void * user_data , int64_t offset , int whence )
@ -186,8 +182,10 @@ void FFmpeg_Decoder::open(const std::string &fname)
mDataStream = mResourceMgr - > get ( fname ) ;
if ( ( mFormatCtx = avformat_alloc_context ( ) ) = = NULL )
fail ( " Failed to allocate context " ) ;
throw std : : runtime_error ( " Failed to allocate context " ) ;
try
{
mFormatCtx - > pb = avio_alloc_context ( NULL , 0 , 0 , this , readPacket , writePacket , seek ) ;
if ( ! mFormatCtx - > pb | | avformat_open_input ( & mFormatCtx , fname . c_str ( ) , NULL , NULL ) ! = 0 )
{
@ -207,13 +205,11 @@ void FFmpeg_Decoder::open(const std::string &fname)
avformat_free_context ( mFormatCtx ) ;
}
mFormatCtx = NULL ;
fail ( " Failed to allocate input stream " ) ;
throw std : : runtime_error ( " Failed to allocate input stream " ) ;
}
try
{
if ( avformat_find_stream_info ( mFormatCtx , NULL ) < 0 )
fail ( " Failed to find stream info in " + fname ) ;
throw std : : runtime_error ( " Failed to find stream info in " + fname ) ;
for ( size_t j = 0 ; j < mFormatCtx - > nb_streams ; j + + )
{
@ -224,24 +220,38 @@ void FFmpeg_Decoder::open(const std::string &fname)
}
}
if ( ! mStream )
fail ( " No audio streams in " + fname ) ;
throw std : : runtime_error ( " No audio streams in " + fname ) ;
( * mStream ) - > codec - > request_sample_fmt = ( * mStream ) - > codec - > sample_fmt ;
AVCodec * codec = avcodec_find_decoder ( ( * mStream ) - > codec - > codec_id ) ;
if ( ! codec )
{
std : : string stream ss ( " No codec found for id " ) ;
ss < < ( * mStream ) - > codec - > codec_id ;
fail ( ss . str ( ) ) ;
std : : string ss = " No codec found for id " +
std : : to_string ( ( * mStream ) - > codec - > codec_id ) ;
throw std : : runtime_error ( ss ) ;
}
if ( avcodec_open2 ( ( * mStream ) - > codec , codec , NULL ) < 0 )
fail ( " Failed to open audio codec " + std : : string ( codec - > long_name ) ) ;
throw std : : runtime_error ( std : : string ( " Failed to open audio codec " ) +
codec - > long_name ) ;
mFrame = av_frame_alloc ( ) ;
if ( ( * mStream ) - > codec - > sample_fmt = = AV_SAMPLE_FMT_FLT | |
( * mStream ) - > codec - > sample_fmt = = AV_SAMPLE_FMT_FLTP )
mOutputSampleFormat = AV_SAMPLE_FMT_S16 ; // FIXME: Check for AL_EXT_FLOAT32 support
else 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
mOutputSampleFormat = AV_SAMPLE_FMT_S16 ;
mOutputChannelLayout = ( * mStream ) - > codec - > channel_layout ;
if ( mOutputChannelLayout = = 0 )
mOutputChannelLayout = av_get_default_channel_layout ( ( * mStream ) - > codec - > channels ) ;
}
catch ( std : : exception & )
{
catch ( . . . ) {
if ( mStream )
avcodec_close ( ( * mStream ) - > codec ) ;
mStream = NULL ;
@ -301,16 +311,7 @@ std::string FFmpeg_Decoder::getName()
void FFmpeg_Decoder : : getInfo ( int * samplerate , ChannelConfig * chans , SampleType * type )
{
if ( ! mStream )
fail ( " No audio stream info " ) ;
if ( ( * mStream ) - > codec - > sample_fmt = = AV_SAMPLE_FMT_FLT | | ( * mStream ) - > codec - > sample_fmt = = AV_SAMPLE_FMT_FLTP )
mOutputSampleFormat = AV_SAMPLE_FMT_S16 ; // FIXME: Check for AL_EXT_FLOAT32 support
else 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
mOutputSampleFormat = AV_SAMPLE_FMT_S16 ;
throw std : : runtime_error ( " No audio stream info " ) ;
if ( mOutputSampleFormat = = AV_SAMPLE_FMT_U8 )
* type = SampleType_UInt8 ;
@ -318,19 +319,11 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
* type = SampleType_Int16 ;
else if ( mOutputSampleFormat = = AV_SAMPLE_FMT_FLT )
* type = SampleType_Float32 ;
int64_t ch_layout = ( * mStream ) - > codec - > channel_layout ;
if ( ch_layout = = 0 )
ch_layout = av_get_default_channel_layout ( ( * mStream ) - > codec - > channels ) ;
mOutputChannelLayout = ch_layout ;
if ( ch_layout = = AV_CH_LAYOUT_5POINT1 | | ch_layout = = AV_CH_LAYOUT_7POINT1
| | ch_layout = = AV_CH_LAYOUT_QUAD ) // FIXME: check for AL_EXT_MCFORMATS support
mOutputChannelLayout = AV_CH_LAYOUT_STEREO ;
else if ( ch_layout ! = AV_CH_LAYOUT_MONO
& & ch_layout ! = AV_CH_LAYOUT_STEREO )
mOutputChannelLayout = AV_CH_LAYOUT_STEREO ;
else
{
mOutputSampleFormat = AV_SAMPLE_FMT_S16 ;
* type = SampleType_Int16 ;
}
if ( mOutputChannelLayout = = AV_CH_LAYOUT_MONO )
* chans = ChannelConfig_Mono ;
@ -347,13 +340,27 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
char str [ 1024 ] ;
av_get_channel_layout_string ( str , sizeof ( str ) , ( * mStream ) - > codec - > channels ,
( * mStream ) - > codec - > channel_layout ) ;
fail ( std : : string ( " Unsupported channel layout: " ) + str ) ;
std : : cerr < < " Unsupported channel layout: " < < str < < std : : endl ;
if ( ( * mStream ) - > codec - > channels = = 1 )
{
mOutputChannelLayout = AV_CH_LAYOUT_MONO ;
* chans = ChannelConfig_Mono ;
}
else
{
mOutputChannelLayout = AV_CH_LAYOUT_STEREO ;
* chans = ChannelConfig_Stereo ;
}
}
* samplerate = ( * mStream ) - > codec - > sample_rate ;
int64_t ch_layout = ( * mStream ) - > codec - > channel_layout ;
if ( ch_layout = = 0 )
ch_layout = av_get_default_channel_layout ( ( * mStream ) - > codec - > channels ) ;
if ( mOutputSampleFormat ! = ( * mStream ) - > codec - > sample_fmt
| | mOutputChannelLayout ! = ch_layout )
if ( mOutputSampleFormat ! = ( * mStream ) - > codec - > sample_fmt | |
mOutputChannelLayout ! = ch_layout )
{
mSwr = swr_alloc_set_opts ( mSwr , // SwrContext
mOutputChannelLayout , // output ch layout
@ -365,24 +372,29 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
0 , // logging level offset
NULL ) ; // log context
if ( ! mSwr )
fail ( std : : string ( " Couldn't allocate SwrContext " ) ) ;
throw std : : runtime_error ( " Couldn't allocate SwrContext " ) ;
if ( swr_init ( mSwr ) < 0 )
fail ( std : : string ( " Couldn't initialize SwrContext " ) ) ;
throw std : : runtime_error ( " Couldn't initialize SwrContext " ) ;
}
}
size_t FFmpeg_Decoder : : read ( char * buffer , size_t bytes )
{
if ( ! mStream )
fail ( " No audio stream " ) ;
{
std : : cerr < < " No audio stream " < < std : : endl ;
return 0 ;
}
return readAVAudioData ( buffer , bytes ) ;
}
void FFmpeg_Decoder : : readAll ( std : : vector < char > & output )
{
if ( ! mStream )
fail ( " No audio stream " ) ;
{
std : : cerr < < " No audio stream " < < std : : endl ;
return ;
}
while ( getAVAudioData ( ) )
{
David Cernat
7 years ago