2010-04-10 14:06:25 +02:00
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#include "meta.h"
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#include "../util.h"
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/* P3D, with Radical ADPCM, from Prototype */
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VGMSTREAM * init_vgmstream_p3d(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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off_t parse_offset;
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off_t start_offset;
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size_t file_size;
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uint32_t header_size;
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uint32_t sample_rate;
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uint32_t body_bytes;
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int loop_flag;
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int channel_count;
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const int interleave = 0x14;
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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("p3d",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x0,streamFile) != 0x503344FF) /* P3D\xFF */
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goto fail;
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header_size = read_32bitLE(0x4,streamFile);
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if (0xC != header_size) goto fail;
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file_size = get_streamfile_size(streamFile);
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if (read_32bitLE(0x8,streamFile) != file_size) goto fail;
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if (read_32bitBE(0xC,streamFile) != 0xFE) goto fail;
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/* body size twice? */
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if (read_32bitLE(0x10,streamFile) + header_size != file_size) goto fail;
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if (read_32bitLE(0x14,streamFile) + header_size != file_size) goto fail;
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/* mysterious 10! */
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if (read_32bitLE(0x18,streamFile) != 10) goto fail;
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/* parse header text */
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parse_offset = 0x1C;
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{
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int text_len = read_32bitLE(parse_offset,streamFile);
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if (9 != text_len) goto fail;
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/* AudioFile */
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if (read_32bitBE(parse_offset+4,streamFile) != 0x41756469 ||
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read_32bitBE(parse_offset+8,streamFile) != 0x6F46696C ||
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read_16bitBE(parse_offset+12,streamFile) != 0x6500) goto fail;
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parse_offset += 4 + text_len + 1;
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}
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channel_count = read_32bitLE(parse_offset,streamFile);
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parse_offset += 4;
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{
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int i;
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/* channel names? */
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for (i = 0; i < channel_count; i++)
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{
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int text_len = read_32bitLE(parse_offset,streamFile);
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parse_offset += 4 + text_len + 1;
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}
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}
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/* info count? */
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if (1 != read_32bitLE(parse_offset,streamFile)) goto fail;
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parse_offset += 4;
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{
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int text_len = read_32bitLE(parse_offset,streamFile);
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if (4 != text_len) goto fail;
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/* radp */
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if (read_32bitBE(parse_offset+4,streamFile) != 0x72616470 ||
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read_8bit(parse_offset+8,streamFile) != 0) goto fail;
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parse_offset += 4 + text_len + 1;
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}
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/* real RADP header */
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if (0x52414450 != read_32bitBE(parse_offset,streamFile)) goto fail;
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if (read_32bitLE(parse_offset+4,streamFile) != channel_count) goto fail;
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sample_rate = read_32bitLE(parse_offset+8,streamFile);
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/* codec id? */
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2010-04-10 23:01:41 +02:00
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//if (9 != read_32bitLE(parse_offset+0xC,streamFile)) goto fail;
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2010-04-10 14:06:25 +02:00
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body_bytes = read_32bitLE(parse_offset+0x10,streamFile);
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start_offset = parse_offset+0x14;
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if (start_offset + body_bytes != file_size) goto fail;
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loop_flag = 0;
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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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/* fill in the vital statistics */
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = sample_rate;
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vgmstream->coding_type = coding_RAD_IMA_mono;
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vgmstream->interleave_block_size = interleave;
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vgmstream->num_samples = body_bytes / interleave / channel_count * 32;
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vgmstream->layout_type = layout_interleave;
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vgmstream->meta_type = meta_P3D;
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/* open the file for reading */
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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,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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vgmstream->ch[i].offset=vgmstream->ch[i].channel_start_offset=start_offset+interleave*i;
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}
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}
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return vgmstream;
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fail:
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/* clean up anything we may have opened */
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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