vgmstream/src/meta/mp4.c

164 lines
4.7 KiB
C
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#include "../vgmstream.h"
#include "meta.h"
#include "../util.h"
#ifdef VGM_USE_MP4V2
void* mp4_file_open( const char* name, MP4FileMode mode )
{
char * endptr;
#ifdef _MSC_VER
unsigned __int64 ptr = _strtoui64( name, &endptr, 16 );
#else
unsigned long ptr = strtoul( name, &endptr, 16 );
#endif
return (void*) ptr;
}
int mp4_file_seek( void* handle, int64_t pos )
{
mp4_streamfile * file = ( mp4_streamfile * ) handle;
if ( pos > file->size ) pos = file->size;
pos += file->start;
file->offset = pos;
return 0;
}
int mp4_file_get_size( void* handle, int64_t* size )
{
mp4_streamfile * file = ( mp4_streamfile * ) handle;
*size = file->size;
return 0;
}
int mp4_file_read( void* handle, void* buffer, int64_t size, int64_t* nin, int64_t maxChunkSize )
{
mp4_streamfile * file = ( mp4_streamfile * ) handle;
int64_t max_size = file->size - file->offset - file->start;
if ( size > max_size ) size = max_size;
if ( size > 0 )
{
*nin = read_streamfile( (uint8_t *) buffer, file->offset, size, file->streamfile );
file->offset += *nin;
}
else
{
*nin = 0;
return 1;
}
return 0;
}
int mp4_file_write( void* handle, const void* buffer, int64_t size, int64_t* nout, int64_t maxChunkSize )
{
return 1;
}
int mp4_file_close( void* handle )
{
return 0;
}
MP4FileProvider mp4_file_provider = { mp4_file_open, mp4_file_seek, mp4_file_get_size, mp4_file_read, mp4_file_write, mp4_file_close };
#ifdef VGM_USE_FDKAAC
VGMSTREAM * init_vgmstream_mp4_aac_offset(STREAMFILE *streamFile, uint64_t start, uint64_t size);
VGMSTREAM * init_vgmstream_mp4_aac(STREAMFILE *streamFile) {
return init_vgmstream_mp4_aac_offset( streamFile, 0, streamFile->get_size(streamFile) );
}
VGMSTREAM * init_vgmstream_mp4_aac_offset(STREAMFILE *streamFile, uint64_t start, uint64_t size) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
mp4_aac_codec_data * aac_file = ( mp4_aac_codec_data * ) calloc(1, sizeof(mp4_aac_codec_data));
CStreamInfo * stream_info;
uint8_t * buffer = NULL;
uint32_t buffer_size;
UINT ubuffer_size, bytes_valid;
if ( !aac_file ) goto fail;
aac_file->if_file.streamfile = streamFile;
aac_file->if_file.start = start;
aac_file->if_file.offset = start;
aac_file->if_file.size = size;
/* Big ol' kludge! */
sprintf( filename, "%p", &aac_file->if_file );
aac_file->h_mp4file = MP4ReadProvider( filename, &mp4_file_provider );
if ( !aac_file->h_mp4file ) goto fail;
if ( MP4GetNumberOfTracks(aac_file->h_mp4file, MP4_AUDIO_TRACK_TYPE, '\000') != 1 ) goto fail;
aac_file->track_id = MP4FindTrackId( aac_file->h_mp4file, 0, MP4_AUDIO_TRACK_TYPE, '\000' );
aac_file->h_aacdecoder = aacDecoder_Open( TT_MP4_RAW, 1 );
if ( !aac_file->h_aacdecoder ) goto fail;
aacDecoder_SetParam( aac_file->h_aacdecoder, AAC_PCM_OUTPUT_CHANNELS, 2 );
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MP4GetTrackESConfiguration( aac_file->h_mp4file, aac_file->track_id, (uint8_t**)(&buffer), (uint32_t*)(&buffer_size));
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ubuffer_size = buffer_size;
if ( aacDecoder_ConfigRaw( aac_file->h_aacdecoder, &buffer, &ubuffer_size ) ) goto fail;
free( buffer ); buffer = NULL;
aac_file->sampleId = 1;
aac_file->numSamples = MP4GetTrackNumberOfSamples( aac_file->h_mp4file, aac_file->track_id );
if (!MP4ReadSample(aac_file->h_mp4file, aac_file->track_id, aac_file->sampleId, (uint8_t**)(&buffer), (uint32_t*)(&buffer_size), 0, 0, 0, 0)) goto fail;
ubuffer_size = buffer_size;
bytes_valid = buffer_size;
if ( aacDecoder_Fill( aac_file->h_aacdecoder, &buffer, &ubuffer_size, &bytes_valid ) || bytes_valid ) goto fail;
if ( aacDecoder_DecodeFrame( aac_file->h_aacdecoder, aac_file->sample_buffer, ( (6) * (2048)*4 ), 0 ) ) goto fail;
free( buffer ); buffer = NULL;
aac_file->sample_ptr = 0;
stream_info = aacDecoder_GetStreamInfo( aac_file->h_aacdecoder );
aac_file->samples_per_frame = stream_info->frameSize;
aac_file->samples_discard = 0;
streamFile->get_name( streamFile, filename, sizeof(filename) );
aac_file->if_file.streamfile = streamFile->open(streamFile, filename, STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!aac_file->if_file.streamfile) goto fail;
vgmstream = allocate_vgmstream( stream_info->numChannels, 1 );
if (!vgmstream) goto fail;
vgmstream->loop_flag = 0;
vgmstream->codec_data = aac_file;
vgmstream->channels = stream_info->numChannels;
vgmstream->sample_rate = stream_info->sampleRate;
vgmstream->num_samples = stream_info->frameSize * aac_file->numSamples;
vgmstream->coding_type = coding_MP4_AAC;
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_MP4;
return vgmstream;
fail:
if ( buffer ) free( buffer );
if ( aac_file ) {
if ( aac_file->h_aacdecoder ) aacDecoder_Close( aac_file->h_aacdecoder );
if ( aac_file->h_mp4file ) MP4Close( aac_file->h_mp4file, 0 );
free( aac_file );
}
return NULL;
}
#endif
#endif