vgmstream/src/meta/mp4.c

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7.3 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;
}
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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 };
#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
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#ifdef VGM_USE_FFMPEG
VGMSTREAM * init_vgmstream_mp4_aac_ffmpeg(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t start_offset = 0;
int loop_flag = 0;
int32_t num_samples = 0, loop_start_sample = 0, loop_end_sample = 0;
ffmpeg_codec_data *ffmpeg_data = NULL;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if ( strcasecmp("mp4",filename_extension(filename))
&& strcasecmp("m4a",filename_extension(filename))
&& strcasecmp("m4v",filename_extension(filename))
&& strcasecmp("bin",filename_extension(filename)) ) /* Final Fantasy Dimensions iOS */
goto fail;
/* check header for Final Fantasy Dimensions */
if (read_32bitBE(0x00,streamFile) == 0x4646444C) { /* "FFDL" (any kind of FFD file) */
if (read_32bitBE(0x04,streamFile) == 0x6D747873) { /* "mtxs" (bgm file) */
num_samples = read_32bitLE(0x08,streamFile);
loop_start_sample = read_32bitLE(0x0c,streamFile);
loop_end_sample = read_32bitLE(0x10,streamFile);
loop_flag = !(loop_start_sample==0 && loop_end_sample==num_samples);
start_offset = 0x14;
} else {
start_offset = 0x4; /* some SEs */
}
/* todo some FFDL have multi streams ("FFLD" + mtxsdata1 + mp4data1 + mtxsdata2 + mp4data2 + etc) */
}
/* check header */
if ( read_32bitBE(start_offset+0x04,streamFile) != 0x66747970) /* size 0x00 + "ftyp" 0x04 */
goto fail;
ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset, streamFile->get_size(streamFile));
if ( !ffmpeg_data ) goto fail;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(ffmpeg_data->channels,loop_flag);
if (!vgmstream) goto fail;
vgmstream->num_samples = ffmpeg_data->totalSamples; /* todo FFD num_samples is different from this */
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vgmstream->sample_rate = ffmpeg_data->sampleRate;
vgmstream->channels = ffmpeg_data->channels;
if (loop_flag) {
vgmstream->loop_start_sample = loop_start_sample;
vgmstream->loop_end_sample = loop_end_sample;
}
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_FFmpeg;
vgmstream->codec_data = ffmpeg_data;
return vgmstream;
fail:
/* clean up anything we may have opened */
if (ffmpeg_data) {
free_ffmpeg(ffmpeg_data);
if (vgmstream) vgmstream->codec_data = NULL;
}
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
#endif