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Dynamically load FFmpeg and libfdk-aac if available. (#6570)

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This commit is contained in:
Steveice10
2023-06-16 16:06:18 -07:00
committed by GitHub
parent d807cdfe62
commit 38435e9b3e
38 changed files with 1311 additions and 877 deletions
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38
src/audio_core/hle/fdk_decoder.cpp
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@ -2,8 +2,10 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fdk-aac/aacdecoder_lib.h>
#include "audio_core/hle/fdk_decoder.h"
#include "common/dynamic_library/fdk-aac.h"
using namespace DynamicLibrary;
namespace AudioCore::HLE {
@ -29,13 +31,17 @@ private:
};
FDKDecoder::Impl::Impl(Memory::MemorySystem& memory) : memory(memory) {
if (!FdkAac::LoadFdkAac()) {
return;
}
// allocate an array of LIB_INFO structures
// if we don't pre-fill the whole segment with zeros, when we call `aacDecoder_GetLibInfo`
// it will segfault, upon investigation, there is some code in fdk_aac depends on your initial
// values in this array
LIB_INFO decoder_info[FDK_MODULE_LAST] = {};
// get library information and fill the struct
if (aacDecoder_GetLibInfo(decoder_info) != 0) {
if (FdkAac::aacDecoder_GetLibInfo(decoder_info) != 0) {
LOG_ERROR(Audio_DSP, "Failed to retrieve fdk_aac library information!");
return;
}
@ -44,14 +50,14 @@ FDKDecoder::Impl::Impl(Memory::MemorySystem& memory) : memory(memory) {
decoder_info[0].build_date);
// choose the input format when initializing: 1 layer of ADTS
decoder = aacDecoder_Open(TRANSPORT_TYPE::TT_MP4_ADTS, 1);
decoder = FdkAac::aacDecoder_Open(TRANSPORT_TYPE::TT_MP4_ADTS, 1);
// set maximum output channel to two (stereo)
// if the input samples have more channels, fdk_aac will perform a downmix
AAC_DECODER_ERROR ret = aacDecoder_SetParam(decoder, AAC_PCM_MAX_OUTPUT_CHANNELS, 2);
AAC_DECODER_ERROR ret = FdkAac::aacDecoder_SetParam(decoder, AAC_PCM_MAX_OUTPUT_CHANNELS, 2);
if (ret != AAC_DEC_OK) {
// unable to set this parameter reflects the decoder implementation might be broken
// we'd better shuts down everything
aacDecoder_Close(decoder);
FdkAac::aacDecoder_Close(decoder);
decoder = nullptr;
LOG_ERROR(Audio_DSP, "Unable to set downmix parameter: {}", ret);
return;
@ -73,8 +79,9 @@ std::optional<BinaryMessage> FDKDecoder::Impl::Initalize(const BinaryMessage& re
}
FDKDecoder::Impl::~Impl() {
if (decoder)
aacDecoder_Close(decoder);
if (decoder) {
FdkAac::aacDecoder_Close(decoder);
}
}
void FDKDecoder::Impl::Clear() {
@ -84,9 +91,10 @@ void FDKDecoder::Impl::Clear() {
// FLUSH - flush internal buffer
// INTR - treat the current internal buffer as discontinuous
// CONCEAL - try to interpolate and smooth out the samples
if (decoder)
aacDecoder_DecodeFrame(decoder, decoder_output, 8192,
AACDEC_FLUSH & AACDEC_INTR & AACDEC_CONCEAL);
if (decoder) {
FdkAac::aacDecoder_DecodeFrame(decoder, decoder_output, 8192,
AACDEC_FLUSH & AACDEC_INTR & AACDEC_CONCEAL);
}
}
std::optional<BinaryMessage> FDKDecoder::Impl::ProcessRequest(const BinaryMessage& request) {
@ -140,7 +148,7 @@ std::optional<BinaryMessage> FDKDecoder::Impl::Decode(const BinaryMessage& reque
std::array<std::vector<s16>, 2> out_streams;
std::size_t data_size = request.decode_aac_request.size;
u32 data_size = request.decode_aac_request.size;
// decoding loops
AAC_DECODER_ERROR result = AAC_DEC_OK;
@ -156,18 +164,18 @@ std::optional<BinaryMessage> FDKDecoder::Impl::Decode(const BinaryMessage& reque
while (buffer_remaining) {
// queue the input buffer, fdk_aac will automatically slice out the buffer it needs
// from the input buffer
result = aacDecoder_Fill(decoder, &data, &input_size, &buffer_remaining);
result = FdkAac::aacDecoder_Fill(decoder, &data, &input_size, &buffer_remaining);
if (result != AAC_DEC_OK) {
// there are some issues when queuing the input buffer
LOG_ERROR(Audio_DSP, "Failed to enqueue the input samples");
return std::nullopt;
}
// get output from decoder
result = aacDecoder_DecodeFrame(decoder, decoder_output,
sizeof(decoder_output) / sizeof(s16), 0);
result = FdkAac::aacDecoder_DecodeFrame(decoder, decoder_output,
sizeof(decoder_output) / sizeof(s16), 0);
if (result == AAC_DEC_OK) {
// get the stream information
stream_info = aacDecoder_GetStreamInfo(decoder);
stream_info = FdkAac::aacDecoder_GetStreamInfo(decoder);
// fill the stream information for binary response
response.decode_aac_response.sample_rate = GetSampleRateEnum(stream_info->sampleRate);
response.decode_aac_response.num_channels = stream_info->numChannels;