mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 23:31:05 +01:00
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
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#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* Westwood Studios .aud (WS-AUD) */
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VGMSTREAM * init_vgmstream_ws_aud(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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coding_t coding_type = -1;
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int channel_count;
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int new_type = 0; /* if 0 is old type */
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int bytes_per_sample = 0;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("aud",filename_extension(filename))) goto fail;
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/* check for 0x0000DEAF chunk marker for first chunk */
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if (read_32bitLE(0x10,streamFile)==0x0000DEAF) { /* new */
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new_type = 1;
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} else if (read_32bitLE(0x08,streamFile)==0x0000DEAF) { /* old (?) */
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new_type = 0;
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} else goto fail;
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if (!new_type) goto fail; /* TODO: not yet supported */
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/* get channel count */
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if (read_8bit(0xa,streamFile) & 1)
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channel_count = 2;
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else
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channel_count = 1;
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if (channel_count == 2) goto fail; /* TODO: not yet supported */
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/* get output format */
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if (read_8bit(0xa,streamFile) & 2)
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bytes_per_sample = 2;
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else
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bytes_per_sample = 1;
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if (bytes_per_sample == 1) goto fail; /* TODO: not yet supported */
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/* check codec type */
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switch (read_8bit(0xb,streamFile)) {
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case 1: /* Westwood custom */
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goto fail; /* TODO: not yet supported */
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break;
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case 99: /* IMA ADPCM */
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coding_type = coding_IMA;
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break;
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default:
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goto fail;
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break;
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}
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,0);
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if (!vgmstream) goto fail;
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/* fill in the vital statistics */
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vgmstream->num_samples = read_32bitLE(0x06,streamFile)/bytes_per_sample/channel_count;
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vgmstream->sample_rate = (uint16_t)read_16bitLE(0x00,streamFile);
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vgmstream->coding_type = coding_type;
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if (new_type) {
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vgmstream->meta_type = meta_WS_AUD;
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} else {
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vgmstream->meta_type = meta_WS_AUD_old;
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}
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vgmstream->layout_type = layout_ws_aud_blocked;
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/* open the file for reading by each channel */
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{
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int i;
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STREAMFILE * file;
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file = streamFile->open(streamFile,filename,
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STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = file;
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}
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}
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/* start me up */
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if (new_type) {
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ws_aud_block_update(0xc,vgmstream);
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} else {
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ws_aud_block_update(0x8,vgmstream);
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}
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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