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