mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 15:42:52 +01:00
919 lines
29 KiB
C
919 lines
29 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* Resource Interchange File Format */
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/* return milliseconds */
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long parse_marker(unsigned char * marker) {
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long hh,mm,ss,ms;
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if (memcmp("Marker ",marker,7)) return -1;
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if (4 != sscanf((char*)marker+7,"%ld:%ld:%ld.%ld",&hh,&mm,&ss,&ms))
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return -1;
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return ((hh*60+mm)*60+ss)*1000+ms;
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}
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/* loop points have been found hiding here */
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void parse_adtl(off_t adtl_offset, off_t adtl_length, STREAMFILE *streamFile,
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long *loop_start, long *loop_end, int *loop_flag) {
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int loop_start_found = 0;
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int loop_end_found = 0;
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off_t current_chunk = adtl_offset+4;
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while (current_chunk < adtl_offset+adtl_length) {
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uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
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off_t chunk_size = read_32bitLE(current_chunk+4,streamFile);
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if (current_chunk+8+chunk_size > adtl_offset+adtl_length) return;
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switch(chunk_type) {
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case 0x6c61626c: /* labl */
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{
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unsigned char *labelcontent;
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labelcontent = malloc(chunk_size-4);
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if (!labelcontent) return;
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if (read_streamfile(labelcontent,current_chunk+0xc,
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chunk_size-4,streamFile)!=chunk_size-4) {
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free(labelcontent);
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return;
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}
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switch (read_32bitLE(current_chunk+8,streamFile)) {
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case 1:
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if (!loop_start_found &&
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(*loop_start = parse_marker(labelcontent))>=0)
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{
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loop_start_found = 1;
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}
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break;
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case 2:
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if (!loop_end_found &&
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(*loop_end = parse_marker(labelcontent))>=0)
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{
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loop_end_found = 1;
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}
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break;
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default:
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break;
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}
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free(labelcontent);
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}
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break;
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default:
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break;
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}
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current_chunk += 8 + chunk_size;
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}
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if (loop_start_found && loop_end_found) *loop_flag = 1;
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/* labels don't seem to be consistently ordered */
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if (*loop_start > *loop_end) {
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long temp = *loop_start;
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*loop_start = *loop_end;
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*loop_end = temp;
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}
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}
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struct riff_fmt_chunk {
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int sample_rate;
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int channel_count;
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uint32_t block_size;
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int coding_type;
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int interleave;
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};
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int read_fmt(int big_endian,
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STREAMFILE * streamFile,
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off_t current_chunk,
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struct riff_fmt_chunk * fmt,
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int sns,
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int mwv) {
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int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
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int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
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if (big_endian) {
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read_32bit = read_32bitBE;
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read_16bit = read_16bitBE;
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} else {
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read_32bit = read_32bitLE;
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read_16bit = read_16bitLE;
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}
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fmt->sample_rate = read_32bit(current_chunk+0x0c,streamFile);
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fmt->channel_count = read_16bit(current_chunk+0x0a,streamFile);
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fmt->block_size = read_16bit(current_chunk+0x14,streamFile);
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switch ((uint16_t)read_16bit(current_chunk+0x8,streamFile)) {
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case 1: /* PCM */
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switch (read_16bit(current_chunk+0x16,streamFile)) {
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case 16:
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if (big_endian) {
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fmt->coding_type = coding_PCM16BE;
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} else {
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fmt->coding_type = coding_PCM16LE;
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}
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fmt->interleave = 2;
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break;
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case 8:
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fmt->coding_type = coding_PCM8_U_int;
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fmt->interleave = 1;
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break;
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default:
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goto fail;
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}
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break;
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case 2: /* MS ADPCM */
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/* ensure 4bps */
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if (read_16bit(current_chunk+0x16,streamFile)!=4)
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goto fail;
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fmt->coding_type = coding_MSADPCM;
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fmt->interleave = 0;
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break;
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case 0x11: /* MS IMA ADCM */
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/* ensure 4bps */
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if (read_16bit(current_chunk+0x16,streamFile)!=4)
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goto fail;
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fmt->coding_type = coding_MS_IMA;
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fmt->interleave = 0;
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break;
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case 0x69: /* MS IMA ADCM - Rayman Raving Rabbids 2 (PC) */
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/* ensure 4bps */
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if (read_16bit(current_chunk+0x16,streamFile)!=4)
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goto fail;
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fmt->coding_type = coding_MS_IMA;
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fmt->interleave = 0;
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break;
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case 0x555: /* Level-5 0x555 ADPCM */
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if (!mwv) goto fail;
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fmt->coding_type = coding_L5_555;
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fmt->interleave = 0x12;
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break;
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case 0x5050: /* Ubisoft .sns uses this for DSP */
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if (!sns) goto fail;
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fmt->coding_type = coding_NGC_DSP;
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fmt->interleave = 8;
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break;
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case 0xFFF0: /* */
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fmt->coding_type = coding_NGC_DSP;
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fmt->interleave = 8;
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break;
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#ifdef VGM_USE_MAIATRAC3PLUS
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case 0xFFFE: /* WAVEFORMATEXTENSIBLE */
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if (read_32bit(current_chunk+0x20,streamFile) == 0xE923AABF &&
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read_16bit(current_chunk+0x24,streamFile) == (int16_t)0xCB58 &&
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read_16bit(current_chunk+0x26,streamFile) == 0x4471 &&
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read_32bitLE(current_chunk+0x28,streamFile) == 0xFAFF19A1 &&
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read_32bitLE(current_chunk+0x2C,streamFile) == 0x62CEE401) {
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uint16_t bztmp = read_16bit(current_chunk+0x32,streamFile);
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bztmp = (bztmp >> 8) | (bztmp << 8);
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fmt->coding_type = coding_AT3plus;
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fmt->block_size = (bztmp & 0x3FF) * 8 + 8;
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fmt->interleave = 0;
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}
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break;
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#endif
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default:
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goto fail;
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}
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return 0;
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fail:
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return -1;
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}
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VGMSTREAM * init_vgmstream_riff(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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struct riff_fmt_chunk fmt;
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off_t file_size = -1;
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int sample_count = 0;
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int fact_sample_count = -1;
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off_t start_offset = -1;
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int loop_flag = 0;
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long loop_start_ms = -1;
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long loop_end_ms = -1;
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off_t loop_start_offset = -1;
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off_t loop_end_offset = -1;
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uint32_t riff_size;
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uint32_t data_size = 0;
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int FormatChunkFound = 0;
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int DataChunkFound = 0;
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/* Level-5 mwv */
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int mwv = 0;
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off_t mwv_pflt_offset = -1;
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off_t mwv_ctrl_offset = -1;
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/* Ubisoft sns */
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int sns = 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("wav",filename_extension(filename)) &&
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strcasecmp("lwav",filename_extension(filename))
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#ifdef VGM_USE_MAIATRAC3PLUS
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&& strcasecmp("at3",filename_extension(filename))
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#endif
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)
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{
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if (!strcasecmp("mwv",filename_extension(filename)))
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mwv = 1;
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else if (!strcasecmp("sns",filename_extension(filename)))
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sns = 1;
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else
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goto fail;
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}
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/* check header */
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if ((uint32_t)read_32bitBE(0,streamFile)!=0x52494646) /* "RIFF" */
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goto fail;
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/* check for WAVE form */
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if ((uint32_t)read_32bitBE(8,streamFile)!=0x57415645) /* "WAVE" */
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goto fail;
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riff_size = read_32bitLE(4,streamFile);
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file_size = get_streamfile_size(streamFile);
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/* check for tructated RIFF */
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if (file_size < riff_size+8) goto fail;
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/* read through chunks to verify format and find metadata */
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{
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off_t current_chunk = 0xc; /* start with first chunk */
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while (current_chunk < file_size && current_chunk < riff_size+8) {
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uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
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off_t chunk_size = read_32bitLE(current_chunk+4,streamFile);
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if (current_chunk+8+chunk_size > file_size) goto fail;
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switch(chunk_type) {
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case 0x666d7420: /* "fmt " */
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/* only one per file */
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if (FormatChunkFound) goto fail;
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FormatChunkFound = 1;
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if (-1 == read_fmt(0, /* big endian == false*/
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streamFile,
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current_chunk,
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&fmt,
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sns,
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mwv))
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goto fail;
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break;
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case 0x64617461: /* data */
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/* at most one per file */
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if (DataChunkFound) goto fail;
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DataChunkFound = 1;
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start_offset = current_chunk + 8;
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data_size = chunk_size;
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break;
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case 0x4C495354: /* LIST */
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/* what lurks within?? */
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switch (read_32bitBE(current_chunk + 8, streamFile)) {
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case 0x6164746C: /* adtl */
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/* yay, atdl is its own little world */
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parse_adtl(current_chunk + 8, chunk_size,
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streamFile,
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&loop_start_ms,&loop_end_ms,&loop_flag);
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break;
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default:
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break;
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}
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break;
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case 0x736D706C: /* smpl */
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/* check loop count */
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if (read_32bitLE(current_chunk+0x24, streamFile)==1)
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{
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/* check loop info */
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if (read_32bitLE(current_chunk+0x2c+4, streamFile)==0)
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{
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loop_flag = 1;
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loop_start_offset =
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read_32bitLE(current_chunk+0x2c+8, streamFile);
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loop_end_offset =
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read_32bitLE(current_chunk+0x2c+0xc,streamFile);
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}
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}
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break;
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case 0x70666c74: /* pflt */
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if (!mwv) break; /* ignore if not in an mwv */
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/* predictor filters */
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mwv_pflt_offset = current_chunk;
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break;
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case 0x6374726c: /* ctrl */
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if (!mwv) break; /* ignore if not in an mwv */
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/* loops! */
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if (read_32bitLE(current_chunk+8, streamFile))
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{
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loop_flag = 1;
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}
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mwv_ctrl_offset = current_chunk;
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break;
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case 0x66616374: /* fact */
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if (chunk_size != 4
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&& (!(sns && chunk_size == 0x10))) break;
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fact_sample_count = read_32bitLE(current_chunk+8, streamFile);
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break;
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default:
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/* ignorance is bliss */
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break;
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}
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current_chunk += 8+chunk_size;
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}
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}
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if (!FormatChunkFound || !DataChunkFound) goto fail;
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switch (fmt.coding_type) {
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case coding_PCM16LE:
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sample_count = data_size/2/fmt.channel_count;
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break;
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case coding_PCM8_U_int:
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sample_count = data_size/fmt.channel_count;
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break;
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case coding_L5_555:
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sample_count = data_size/0x12/fmt.channel_count*32;
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break;
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case coding_MSADPCM:
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sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
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break;
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case coding_MS_IMA:
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sample_count = (data_size / fmt.block_size) * (fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count +
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((data_size % fmt.block_size) ? (data_size % fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count : 0);
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break;
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case coding_NGC_DSP:
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break;
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#ifdef VGM_USE_MAIATRAC3PLUS
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case coding_AT3plus:
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sample_count = (data_size / fmt.block_size) * 2048 * fmt.channel_count;
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break;
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#endif
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default:
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goto fail;
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}
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/* .sns uses fact chunk */
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if (sns)
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{
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if (-1 == fact_sample_count) goto fail;
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sample_count = fact_sample_count;
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}
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(fmt.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->num_samples = sample_count;
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vgmstream->sample_rate = fmt.sample_rate;
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vgmstream->coding_type = fmt.coding_type;
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vgmstream->layout_type = layout_none;
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if (fmt.channel_count > 1) {
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switch (fmt.coding_type) {
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case coding_PCM8_U_int:
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case coding_MS_IMA:
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case coding_MSADPCM:
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#ifdef VGM_USE_MAIATRAC3PLUS
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case coding_AT3plus:
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#endif
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// use layout_none from above
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break;
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default:
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vgmstream->layout_type = layout_interleave;
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break;
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}
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}
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vgmstream->interleave_block_size = fmt.interleave;
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switch (fmt.coding_type) {
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case coding_MSADPCM:
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case coding_MS_IMA:
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#ifdef VGM_USE_MAIATRAC3PLUS
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case coding_AT3plus:
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#endif
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// override interleave_block_size with frame size
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vgmstream->interleave_block_size = fmt.block_size;
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break;
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default:
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// use interleave from above
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break;
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}
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#ifdef VGM_USE_MAIATRAC3PLUS
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if (fmt.coding_type == coding_AT3plus) {
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maiatrac3plus_codec_data *data = malloc(sizeof(maiatrac3plus_codec_data));
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data->buffer = 0;
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data->samples_discard = 0;
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data->handle = Atrac3plusDecoder_openContext();
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vgmstream->codec_data = data;
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}
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#endif
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if (loop_flag) {
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if (loop_start_ms >= 0)
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{
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vgmstream->loop_start_sample =
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(long long)loop_start_ms*fmt.sample_rate/1000;
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vgmstream->loop_end_sample =
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(long long)loop_end_ms*fmt.sample_rate/1000;
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vgmstream->meta_type = meta_RIFF_WAVE_labl_Marker;
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}
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else if (loop_start_offset >= 0)
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{
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vgmstream->loop_start_sample = loop_start_offset;
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vgmstream->loop_end_sample = loop_end_offset;
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vgmstream->meta_type = meta_RIFF_WAVE_smpl;
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}
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else if (mwv && mwv_ctrl_offset != -1)
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{
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vgmstream->loop_start_sample = read_32bitLE(mwv_ctrl_offset+12,
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streamFile);
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vgmstream->loop_end_sample = sample_count;
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}
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}
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else
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{
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vgmstream->meta_type = meta_RIFF_WAVE;
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}
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|
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if (mwv)
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{
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int i, c;
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if (fmt.coding_type == coding_L5_555)
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{
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const int filter_order = 3;
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int filter_count = read_32bitLE(mwv_pflt_offset+12, streamFile);
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|
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if (mwv_pflt_offset == -1 ||
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read_32bitLE(mwv_pflt_offset+8, streamFile) != filter_order ||
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read_32bitLE(mwv_pflt_offset+4, streamFile) < 8 + filter_count * 4 * filter_order)
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goto fail;
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if (filter_count > 0x20) goto fail;
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for (c = 0; c < fmt.channel_count; c++)
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{
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for (i = 0; i < filter_count * filter_order; i++)
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{
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vgmstream->ch[c].adpcm_coef_3by32[i] = read_32bitLE(
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mwv_pflt_offset+16+i*4, streamFile
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);
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}
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}
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}
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vgmstream->meta_type = meta_RIFF_WAVE_MWV;
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}
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|
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if (sns)
|
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{
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int c;
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/* common codebook? */
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|
static const int16_t coef[16] =
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{0x04ab,0xfced,0x0789,0xfedf,0x09a2,0xfae5,0x0c90,0xfac1,
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0x084d,0xfaa4,0x0982,0xfdf7,0x0af6,0xfafa,0x0be6,0xfbf5};
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|
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for (c = 0; c < fmt.channel_count; c++)
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{
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int i;
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for (i = 0; i < 16; i++)
|
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{
|
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vgmstream->ch[c].adpcm_coef[i] = coef[i];
|
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}
|
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}
|
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vgmstream->meta_type = meta_RIFF_WAVE_SNS;
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}
|
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|
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/* open the file, set up each channel */
|
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{
|
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int i;
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|
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vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
|
|
STREAMFILE_DEFAULT_BUFFER_SIZE);
|
|
if (!vgmstream->ch[0].streamfile) goto fail;
|
|
|
|
for (i=0;i<fmt.channel_count;i++) {
|
|
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
|
|
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
|
|
start_offset+i*fmt.interleave;
|
|
}
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|
|
VGMSTREAM * init_vgmstream_rifx(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[PATH_LIMIT];
|
|
|
|
struct riff_fmt_chunk fmt;
|
|
|
|
off_t file_size = -1;
|
|
int sample_count = 0;
|
|
int fact_sample_count = -1;
|
|
off_t start_offset = -1;
|
|
off_t wiih_offset = -1;
|
|
uint32_t wiih_size = 0;
|
|
|
|
int loop_flag = 0;
|
|
off_t loop_start_offset = -1;
|
|
off_t loop_end_offset = -1;
|
|
uint32_t riff_size;
|
|
uint32_t data_size = 0;
|
|
|
|
int FormatChunkFound = 0;
|
|
int DataChunkFound = 0;
|
|
|
|
/* check extension, case insensitive */
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("wav",filename_extension(filename)) &&
|
|
strcasecmp("lwav",filename_extension(filename)))
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
/* check header */
|
|
if ((uint32_t)read_32bitBE(0,streamFile)!=0x52494658) /* "RIFX" */
|
|
goto fail;
|
|
/* check for WAVE form */
|
|
if ((uint32_t)read_32bitBE(8,streamFile)!=0x57415645) /* "WAVE" */
|
|
goto fail;
|
|
|
|
riff_size = read_32bitBE(4,streamFile);
|
|
file_size = get_streamfile_size(streamFile);
|
|
|
|
/* check for tructated RIFF */
|
|
if (file_size < riff_size+8) goto fail;
|
|
|
|
/* read through chunks to verify format and find metadata */
|
|
{
|
|
off_t current_chunk = 0xc; /* start with first chunk */
|
|
|
|
while (current_chunk < file_size && current_chunk < riff_size+8) {
|
|
uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
|
|
off_t chunk_size = read_32bitBE(current_chunk+4,streamFile);
|
|
|
|
if (current_chunk+8+chunk_size > file_size) goto fail;
|
|
|
|
switch(chunk_type) {
|
|
case 0x666d7420: /* "fmt " */
|
|
/* only one per file */
|
|
if (FormatChunkFound) goto fail;
|
|
FormatChunkFound = 1;
|
|
|
|
if (-1 == read_fmt(1, /* big endian == true */
|
|
streamFile,
|
|
current_chunk,
|
|
&fmt,
|
|
0, /* sns == false */
|
|
0)) /* mwv == false */
|
|
goto fail;
|
|
|
|
break;
|
|
case 0x64617461: /* data */
|
|
/* at most one per file */
|
|
if (DataChunkFound) goto fail;
|
|
DataChunkFound = 1;
|
|
|
|
start_offset = current_chunk + 8;
|
|
data_size = chunk_size;
|
|
break;
|
|
case 0x736D706C: /* smpl */
|
|
/* check loop count */
|
|
if (read_32bitBE(current_chunk+0x24, streamFile)==1)
|
|
{
|
|
/* check loop info */
|
|
if (read_32bitBE(current_chunk+0x2c+4, streamFile)==0)
|
|
{
|
|
loop_flag = 1;
|
|
loop_start_offset =
|
|
read_32bitBE(current_chunk+0x2c+8, streamFile);
|
|
loop_end_offset =
|
|
read_32bitBE(current_chunk+0x2c+0xc,streamFile);
|
|
}
|
|
}
|
|
break;
|
|
case 0x66616374: /* fact */
|
|
if (chunk_size != 4) break;
|
|
fact_sample_count = read_32bitBE(current_chunk+8, streamFile);
|
|
break;
|
|
case 0x57696948: /* WiiH */
|
|
wiih_size = read_32bitBE(current_chunk+4, streamFile);
|
|
wiih_offset = current_chunk+8;
|
|
break;
|
|
default:
|
|
/* ignorance is bliss */
|
|
break;
|
|
}
|
|
|
|
current_chunk += 8+chunk_size;
|
|
}
|
|
}
|
|
|
|
if (!FormatChunkFound || !DataChunkFound) goto fail;
|
|
|
|
switch (fmt.coding_type) {
|
|
case coding_PCM16BE:
|
|
sample_count = data_size/2/fmt.channel_count;
|
|
break;
|
|
case coding_PCM8_U_int:
|
|
sample_count = data_size/fmt.channel_count;
|
|
break;
|
|
case coding_NGC_DSP:
|
|
/* the only way of getting DSP info right now */
|
|
if (wiih_offset < 0 || wiih_size != 0x2e*fmt.channel_count) goto fail;
|
|
sample_count = data_size/8/fmt.channel_count*14;
|
|
break;
|
|
#if 0
|
|
/* found in RE:ORC, looks like it should be MS_IMA instead */
|
|
case coding_MSADPCM:
|
|
sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
|
|
break;
|
|
#endif
|
|
default:
|
|
goto fail;
|
|
}
|
|
|
|
/* build the VGMSTREAM */
|
|
|
|
vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
/* fill in the vital statistics */
|
|
vgmstream->num_samples = sample_count;
|
|
vgmstream->sample_rate = fmt.sample_rate;
|
|
|
|
vgmstream->coding_type = fmt.coding_type;
|
|
|
|
vgmstream->layout_type = layout_none;
|
|
if (fmt.channel_count > 1) {
|
|
switch (fmt.coding_type) {
|
|
case coding_PCM8_U_int:
|
|
case coding_MS_IMA:
|
|
case coding_MSADPCM:
|
|
// use layout_none from above
|
|
break;
|
|
default:
|
|
vgmstream->layout_type = layout_interleave;
|
|
break;
|
|
}
|
|
}
|
|
|
|
vgmstream->interleave_block_size = fmt.interleave;
|
|
switch (fmt.coding_type) {
|
|
case coding_MSADPCM:
|
|
case coding_MS_IMA:
|
|
// override interleave_block_size with frame size
|
|
vgmstream->interleave_block_size = fmt.block_size;
|
|
break;
|
|
default:
|
|
// use interleave from above
|
|
break;
|
|
}
|
|
|
|
if (fmt.coding_type == coding_MS_IMA)
|
|
vgmstream->interleave_block_size = fmt.block_size;
|
|
|
|
if (loop_flag) {
|
|
if (loop_start_offset >= 0)
|
|
{
|
|
vgmstream->loop_start_sample = loop_start_offset;
|
|
vgmstream->loop_end_sample = loop_end_offset;
|
|
vgmstream->meta_type = meta_RIFX_WAVE_smpl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
vgmstream->meta_type = meta_RIFX_WAVE;
|
|
}
|
|
|
|
/* read from WiiH */
|
|
if (wiih_offset >= 0) {
|
|
int i,j;
|
|
for (i=0;i<fmt.channel_count;i++) {
|
|
for (j=0;j<16;j++)
|
|
vgmstream->ch[i].adpcm_coef[j] = read_16bitBE(wiih_offset + i * 0x2e + j * 2,streamFile);
|
|
vgmstream->ch[i].adpcm_history1_16 = read_16bitBE(wiih_offset + i * 0x2e + 0x24,streamFile);
|
|
vgmstream->ch[i].adpcm_history2_16 = read_16bitBE(wiih_offset + i * 0x2e + 0x26,streamFile);
|
|
}
|
|
}
|
|
|
|
/* open the file, set up each channel */
|
|
{
|
|
int i;
|
|
|
|
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
|
|
STREAMFILE_DEFAULT_BUFFER_SIZE);
|
|
if (!vgmstream->ch[0].streamfile) goto fail;
|
|
|
|
for (i=0;i<fmt.channel_count;i++) {
|
|
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
|
|
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
|
|
start_offset+i*fmt.interleave;
|
|
}
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|
|
/* XNBm (Windows 7 Phone) */
|
|
VGMSTREAM * init_vgmstream_xnbm(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[PATH_LIMIT];
|
|
|
|
struct riff_fmt_chunk fmt;
|
|
|
|
off_t file_size = -1;
|
|
int sample_count = 0;
|
|
off_t start_offset = -1;
|
|
|
|
int loop_flag = 0;
|
|
#if 0
|
|
long loop_start_ms = -1;
|
|
long loop_end_ms = -1;
|
|
off_t loop_start_offset = -1;
|
|
off_t loop_end_offset = -1;
|
|
#endif
|
|
|
|
uint32_t xnbm_size;
|
|
uint32_t data_size = 0;
|
|
|
|
/* check extension, case insensitive */
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("xnb",filename_extension(filename)))
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
/* check header */
|
|
if ((uint32_t)read_32bitBE(0,streamFile)!=0x584E426d) /* "XNBm" */
|
|
goto fail;
|
|
/* check version? */
|
|
if ((uint32_t)read_16bitLE(4,streamFile)!=5)
|
|
goto fail;
|
|
|
|
xnbm_size = read_32bitLE(6,streamFile);
|
|
file_size = get_streamfile_size(streamFile);
|
|
|
|
/* check for tructated XNBm */
|
|
if (file_size < xnbm_size) goto fail;
|
|
|
|
/* read through chunks to verify format and find metadata */
|
|
{
|
|
off_t current_chunk = 0xa; /* start with first chunk */
|
|
int id_string_len;
|
|
uint32_t fmt_chunk_size;
|
|
|
|
/* flag? count of strings? */
|
|
if (read_8bit(current_chunk ++, streamFile) != 1)
|
|
goto fail;
|
|
|
|
/* string length */
|
|
id_string_len = read_8bit(current_chunk ++, streamFile);
|
|
|
|
/* skip string */
|
|
/* may want to check this ID "Microsoft.Xna.Framework.Content.SoundEffectReader" */
|
|
current_chunk += id_string_len;
|
|
|
|
/* ???? */
|
|
if (read_32bitLE(current_chunk, streamFile) != 0)
|
|
goto fail;
|
|
current_chunk += 4;
|
|
|
|
/* ???? */
|
|
if (read_8bit(current_chunk ++, streamFile) != 0)
|
|
goto fail;
|
|
|
|
/* flag? count of chunks? */
|
|
if (read_8bit(current_chunk++, streamFile) != 1)
|
|
goto fail;
|
|
|
|
/* fmt size */
|
|
fmt_chunk_size = read_32bitLE(current_chunk, streamFile);
|
|
current_chunk += 4;
|
|
|
|
if (-1 == read_fmt(0, /* big endian == false */
|
|
streamFile,
|
|
current_chunk-8, /* read_fmt() expects to skip "fmt "+size */
|
|
&fmt,
|
|
0, /* sns == false */
|
|
0)) /* mwv == false */
|
|
goto fail;
|
|
|
|
current_chunk += fmt_chunk_size;
|
|
|
|
/* data size! */
|
|
data_size = read_32bitLE(current_chunk, streamFile);
|
|
current_chunk += 4;
|
|
|
|
start_offset = current_chunk;
|
|
}
|
|
|
|
switch (fmt.coding_type) {
|
|
case coding_PCM16LE:
|
|
sample_count = data_size/2/fmt.channel_count;
|
|
break;
|
|
case coding_PCM8_U_int:
|
|
sample_count = data_size/fmt.channel_count;
|
|
break;
|
|
case coding_MSADPCM:
|
|
sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
|
|
break;
|
|
case coding_MS_IMA:
|
|
sample_count = (data_size / fmt.block_size) * (fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count +
|
|
((data_size % fmt.block_size) ? (data_size % fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count : 0);
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
|
|
/* build the VGMSTREAM */
|
|
|
|
vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
/* fill in the vital statistics */
|
|
vgmstream->num_samples = sample_count;
|
|
vgmstream->sample_rate = fmt.sample_rate;
|
|
|
|
vgmstream->coding_type = fmt.coding_type;
|
|
|
|
vgmstream->layout_type = layout_none;
|
|
if (fmt.channel_count > 1) {
|
|
switch (fmt.coding_type) {
|
|
case coding_PCM8_U_int:
|
|
case coding_MS_IMA:
|
|
case coding_MSADPCM:
|
|
// use layout_none from above
|
|
break;
|
|
default:
|
|
vgmstream->layout_type = layout_interleave;
|
|
break;
|
|
}
|
|
}
|
|
|
|
vgmstream->interleave_block_size = fmt.interleave;
|
|
switch (fmt.coding_type) {
|
|
case coding_MSADPCM:
|
|
case coding_MS_IMA:
|
|
// override interleave_block_size with frame size
|
|
vgmstream->interleave_block_size = fmt.block_size;
|
|
break;
|
|
default:
|
|
// use interleave from above
|
|
break;
|
|
}
|
|
|
|
vgmstream->meta_type = meta_XNBm;
|
|
|
|
/* open the file, set up each channel */
|
|
{
|
|
int i;
|
|
|
|
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
|
|
STREAMFILE_DEFAULT_BUFFER_SIZE);
|
|
if (!vgmstream->ch[0].streamfile) goto fail;
|
|
|
|
for (i=0;i<fmt.channel_count;i++) {
|
|
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
|
|
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
|
|
start_offset+i*fmt.interleave;
|
|
}
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|