mirror of
https://github.com/vgmstream/vgmstream.git
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92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* ASTB - found in Dead Rising (X360) */
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VGMSTREAM * init_vgmstream_x360_ast(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset, data_size;
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int loop_flag, channel_count;
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int i, xma_streams;
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/* check extension, case insensitive */
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if ( !check_extensions(streamFile,"ast"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x41535442) /* "ASTB" */
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goto fail;
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if (read_32bitBE(0x04,streamFile) != get_streamfile_size(streamFile)) goto fail;
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if (read_16bitBE(0x30,streamFile) != 0x165) goto fail; /* only seen XMA1 */
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xma_streams = read_16bitBE(0x38,streamFile);
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loop_flag = read_8bit(0x3a,streamFile);
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channel_count = 0; /* sum of all stream channels (though only 1/2ch ever seen) */
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for (i = 0; i < xma_streams; i++) {
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channel_count += read_8bit(0x3c + 0x14*i + 0x11,streamFile);
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}
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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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start_offset = read_32bitBE(0x10,streamFile);
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data_size = read_32bitBE(0x20,streamFile);
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vgmstream->sample_rate = read_32bitBE(0x40,streamFile);
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vgmstream->meta_type = meta_X360_AST;
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{
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/* manually find sample offsets (XMA1 nonsense again) */
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ms_sample_data msd;
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memset(&msd,0,sizeof(ms_sample_data));
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msd.xma_version = 1;
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msd.channels = channel_count;
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msd.data_offset = start_offset;
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msd.data_size = data_size;
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msd.loop_flag = loop_flag;
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msd.loop_start_b = read_32bitBE(0x44,streamFile);
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msd.loop_end_b = read_32bitBE(0x48,streamFile);
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msd.loop_start_subframe = read_8bit(0x4c,streamFile) & 0xF; /* lower 4b: subframe where the loop starts, 0..4 */
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msd.loop_end_subframe = read_8bit(0x4c,streamFile) >> 4; /* upper 4b: subframe where the loop ends, 0..3 */
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xma_get_samples(&msd, streamFile);
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vgmstream->num_samples = msd.num_samples;
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vgmstream->loop_start_sample = msd.loop_start_sample;
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vgmstream->loop_end_sample = msd.loop_end_sample;
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//skip_samples = msd.skip_samples; //todo add skip samples
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}
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#ifdef VGM_USE_FFMPEG
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{
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uint8_t buf[100];
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size_t bytes;
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off_t fmt_offset = 0x30;
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size_t fmt_size = 0x0c + xma_streams * 0x14;
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/* XMA1 "fmt" chunk @ 0x20 (BE, unlike the usual LE) */
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bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,100, fmt_offset,fmt_size, data_size, streamFile, 1);
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if (bytes <= 0) goto fail;
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vgmstream->codec_data = init_ffmpeg_header_offset(streamFile, buf,bytes, start_offset,data_size);
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if ( !vgmstream->codec_data ) goto fail;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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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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