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Don't throw exceptions from the audio decoder

Browse Source
pull/359/head
Chris Robinson 7 years ago
parent d2b3f902c7
commit aecf74e7bb
5 changed files with 146 additions and 112 deletions
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190
apps/openmw/mwsound/ffmpeg_decoder.cpp
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@ -3,7 +3,7 @@
#include <memory>
#include <stdexcept>
#include <sstream>
#include <iostream>
#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)
@ -180,40 +176,40 @@ size_t FFmpeg_Decoder::readAVAudioData(void *data, size_t length)
return dec;
}
void FFmpeg_Decoder::open(const std::string &fname)
bool FFmpeg_Decoder::open(const std::string &fname)
{
close();
mDataStream = mResourceMgr->get(fname);
try
{
mDataStream = mResourceMgr->get(fname);
if((mFormatCtx=avformat_alloc_context()) == NULL)
fail("Failed to allocate context");
if((mFormatCtx=avformat_alloc_context()) == NULL)
throw std::runtime_error("Failed to allocate context");
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)
{
// "Note that a user-supplied AVFormatContext will be freed on failure".
if (mFormatCtx)
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)
{
if (mFormatCtx->pb != NULL)
// "Note that a user-supplied AVFormatContext will be freed on failure".
if (mFormatCtx)
{
if (mFormatCtx->pb->buffer != NULL)
if (mFormatCtx->pb != NULL)
{
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
if (mFormatCtx->pb->buffer != NULL)
{
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
}
av_free(mFormatCtx->pb);
mFormatCtx->pb = NULL;
}
av_free(mFormatCtx->pb);
mFormatCtx->pb = NULL;
avformat_free_context(mFormatCtx);
}
avformat_free_context(mFormatCtx);
mFormatCtx = NULL;
throw std::runtime_error("Failed to allocate input stream");
}
mFormatCtx = NULL;
fail("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++)
{
@ -224,23 +220,45 @@ 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::stringstream 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);
return true;
}
catch(std::exception&)
catch(std::exception &e)
{
std::cerr<< "Could not open audio file: "<<e.what() <<std::endl;
}
if(mFormatCtx)
{
if(mStream)
avcodec_close((*mStream)->codec);
@ -248,15 +266,15 @@ void FFmpeg_Decoder::open(const std::string &fname)
if (mFormatCtx->pb->buffer != NULL)
{
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
}
av_free(mFormatCtx->pb);
mFormatCtx->pb = NULL;
avformat_close_input(&mFormatCtx);
throw;
}
return false;
}
void FFmpeg_Decoder::close()
@ -274,18 +292,18 @@ void FFmpeg_Decoder::close()
{
if (mFormatCtx->pb != NULL)
{
// mFormatCtx->pb->buffer must be freed by hand,
// if not, valgrind will show memleak, see:
//
// https://trac.ffmpeg.org/ticket/1357
//
if (mFormatCtx->pb->buffer != NULL)
{
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
}
av_free(mFormatCtx->pb);
mFormatCtx->pb = NULL;
// mFormatCtx->pb->buffer must be freed by hand,
// if not, valgrind will show memleak, see:
//
// https://trac.ffmpeg.org/ticket/1357
//
if (mFormatCtx->pb->buffer != NULL)
{
av_free(mFormatCtx->pb->buffer);
mFormatCtx->pb->buffer = NULL;
}
av_free(mFormatCtx->pb);
mFormatCtx->pb = NULL;
}
avformat_close_input(&mFormatCtx);
}
@ -298,19 +316,13 @@ std::string FFmpeg_Decoder::getName()
return mFormatCtx->filename;
}
void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *type)
bool 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;
{
std::cerr<< "No audio stream info" <<std::endl;
return false;
}
if(mOutputSampleFormat == AV_SAMPLE_FMT_U8)
*type = SampleType_UInt8;
@ -319,19 +331,6 @@ void FFmpeg_Decoder::getInfo(int *samplerate, ChannelConfig *chans, SampleType *
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;
if(mOutputChannelLayout == AV_CH_LAYOUT_MONO)
*chans = ChannelConfig_Mono;
else if(mOutputChannelLayout == AV_CH_LAYOUT_STEREO)
@ -347,13 +346,27 @@ 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 +378,37 @@ 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"));
{
std::cerr<< "Couldn't allocate SwrContext" <<std::endl;
return false;
}
if(swr_init(mSwr) < 0)
fail(std::string("Couldn't initialize SwrContext"));
{
std::cerr<< "Couldn't initialize SwrContext" <<std::endl;
return false;
}
}
return true;
}
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())
{

18
apps/openmw/mwsound/ffmpeg_decoder.hpp
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@ -35,7 +35,7 @@ extern "C"
namespace MWSound
{
class FFmpeg_Decoder : public Sound_Decoder
class FFmpeg_Decoder final : public Sound_Decoder
{
AVFormatContext *mFormatCtx;
AVStream **mStream;
@ -66,17 +66,15 @@ namespace MWSound
bool getAVAudioData();
size_t readAVAudioData(void *data, size_t length);
virtual void open(const std::string &fname);
virtual void close();
bool open(const std::string &fname) override;
void close() override;
virtual std::string getName();
virtual void getInfo(int *samplerate, ChannelConfig *chans, SampleType *type);
std::string getName() override;
bool getInfo(int *samplerate, ChannelConfig *chans, SampleType *type) override;
virtual size_t read(char *buffer, size_t bytes);
virtual void readAll(std::vector<char> &output);
virtual size_t getSampleOffset();
void fail(const std::string &msg);
size_t read(char *buffer, size_t bytes) override;
void readAll(std::vector<char> &output) override;
size_t getSampleOffset() override;
FFmpeg_Decoder& operator=(const FFmpeg_Decoder &rhs);
FFmpeg_Decoder(const FFmpeg_Decoder &rhs);

32
apps/openmw/mwsound/movieaudiofactory.cpp
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@ -1,5 +1,7 @@
#include "movieaudiofactory.hpp"
#include <iostream>
#include <extern/osg-ffmpeg-videoplayer/audiodecoder.hpp>
#include <extern/osg-ffmpeg-videoplayer/videostate.hpp>
@ -13,7 +15,7 @@ namespace MWSound
{
class MovieAudioDecoder;
class MWSoundDecoderBridge : public Sound_Decoder
class MWSoundDecoderBridge final : public Sound_Decoder
{
public:
MWSoundDecoderBridge(MWSound::MovieAudioDecoder* decoder)
@ -25,12 +27,12 @@ namespace MWSound
private:
MWSound::MovieAudioDecoder* mDecoder;
virtual void open(const std::string &fname);
virtual void close();
virtual std::string getName();
virtual void getInfo(int *samplerate, ChannelConfig *chans, SampleType *type);
virtual size_t read(char *buffer, size_t bytes);
virtual size_t getSampleOffset();
bool open(const std::string &fname) override;
void close() override;
std::string getName() override;
bool getInfo(int *samplerate, ChannelConfig *chans, SampleType *type) override;
size_t read(char *buffer, size_t bytes) override;
size_t getSampleOffset() override;
};
class MovieAudioDecoder : public Video::MovieAudioDecoder
@ -96,9 +98,9 @@ namespace MWSound
};
void MWSoundDecoderBridge::open(const std::string &fname)
bool MWSoundDecoderBridge::open(const std::string &fname)
{
throw std::runtime_error("unimplemented");
return false;
}
void MWSoundDecoderBridge::close() {}
@ -107,7 +109,7 @@ namespace MWSound
return mDecoder->getStreamName();
}
void MWSoundDecoderBridge::getInfo(int *samplerate, ChannelConfig *chans, SampleType *type)
bool MWSoundDecoderBridge::getInfo(int *samplerate, ChannelConfig *chans, SampleType *type)
{
*samplerate = mDecoder->getOutputSampleRate();
@ -124,9 +126,8 @@ namespace MWSound
*chans = ChannelConfig_Quad;
else
{
std::stringstream error;
error << "Unsupported channel layout: " << outputChannelLayout;
throw std::runtime_error(error.str());
std::cerr<< "Unsupported channel layout: "<<outputChannelLayout <<std::endl;
return false;
}
AVSampleFormat outputSampleFormat = mDecoder->getOutputSampleFormat();
@ -140,8 +141,11 @@ namespace MWSound
{
char str[1024];
av_get_sample_fmt_string(str, sizeof(str), outputSampleFormat);
throw std::runtime_error(std::string("Unsupported sample format: ") + str);
std::cerr<< "Unsupported sample format: "<<str <<std::endl;
return false;
}
return true;
}
size_t MWSoundDecoderBridge::read(char *buffer, size_t bytes)

14
apps/openmw/mwsound/openal_output.cpp
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@ -411,7 +411,8 @@ bool OpenAL_SoundStream::init(bool getLoudnessData)
ChannelConfig chans;
SampleType type;
mDecoder->getInfo(&mSampleRate, &chans, &type);
if(!mDecoder->getInfo(&mSampleRate, &chans, &type))
return false;
mFormat = getALFormat(chans, type);
if(!mFormat) return false;
@ -948,14 +949,18 @@ std::pair<Sound_Handle,size_t> OpenAL_Output::loadSound(const std::string &fname
DecoderPtr decoder = mManager.getDecoder();
// Workaround: Bethesda at some point converted some of the files to mp3, but the references were kept as .wav.
if(decoder->mResourceMgr->exists(fname))
decoder->open(fname);
{
if(!decoder->open(fname))
return std::make_pair(nullptr, 0);
}
else
{
std::string file = fname;
std::string::size_type pos = file.rfind('.');
if(pos != std::string::npos)
file = file.substr(0, pos)+".mp3";
decoder->open(file);
if(!decoder->open(file))
return std::make_pair(nullptr, 0);
}
std::vector<char> data;
@ -964,7 +969,8 @@ std::pair<Sound_Handle,size_t> OpenAL_Output::loadSound(const std::string &fname
ALenum format;
int srate;
decoder->getInfo(&srate, &chans, &type);
if(!decoder->getInfo(&srate, &chans, &type))
return std::make_pair(nullptr, 0);
format = getALFormat(chans, type);
if(!format) return std::make_pair(nullptr, 0);

4
apps/openmw/mwsound/sound_decoder.hpp
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@ -34,11 +34,11 @@ namespace MWSound
{
const VFS::Manager* mResourceMgr;
virtual void open(const std::string &fname) = 0;
virtual bool open(const std::string &fname) = 0;
virtual void close() = 0;
virtual std::string getName() = 0;
virtual void getInfo(int *samplerate, ChannelConfig *chans, SampleType *type) = 0;
virtual bool getInfo(int *samplerate, ChannelConfig *chans, SampleType *type) = 0;
virtual size_t read(char *buffer, size_t bytes) = 0;
virtual void readAll(std::vector<char> &output);

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