mirror of
https://github.com/vgmstream/vgmstream.git
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67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* .NAAC - from Namco 3DS games (Ace Combat - Assault Horizon Legacy, Taiko no Tatsujin Don to Katsu no Jikuu Daibouken) */
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VGMSTREAM * init_vgmstream_naac(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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size_t data_size;
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/* check extension */
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if ( !check_extensions(streamFile,"naac") )
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goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x41414320) /* "AAC " */
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goto fail;
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if (read_32bitLE(0x04,streamFile) != 0x01) /* version? */
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goto fail;
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start_offset = 0x1000;
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loop_flag = (read_32bitLE(0x18,streamFile) != 0);
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channel_count = read_32bitLE(0x08,streamFile);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = read_32bitLE(0x0c,streamFile);
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vgmstream->num_samples = read_32bitLE(0x10,streamFile); /* without skip_samples */
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vgmstream->loop_start_sample = read_32bitLE(0x14,streamFile); /* with skip_samples */
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vgmstream->loop_end_sample = read_32bitLE(0x18,streamFile);
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/* 0x1c: loop start offset, 0x20: loop end offset (within data) */
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data_size = read_32bitLE(0x24,streamFile);
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/* 0x28: unknown; 0x2c: table start offset?; 0x30: seek table (always 0xFD0, padded) */
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vgmstream->meta_type = meta_NAAC;
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#ifdef VGM_USE_FFMPEG
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{
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ffmpeg_codec_data *ffmpeg_data = NULL;
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ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,data_size);
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if (!ffmpeg_data) goto fail;
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vgmstream->codec_data = ffmpeg_data;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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/* observed default, some files start without silence though seems correct when loop_start=0 */
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if (!ffmpeg_data->skipSamples) /* FFmpeg doesn't seem to use not report it */
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ffmpeg_set_skip_samples(ffmpeg_data, 1024);
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vgmstream->num_samples -= 1024;
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}
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#else
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goto fail;
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#endif
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/* open the file for reading */
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if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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