221 lines
7.7 KiB
C
221 lines
7.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "bgw_streamfile.h"
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/* BGW - from Final Fantasy XI (PC) music files */
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VGMSTREAM * init_vgmstream_bgw(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE *temp_streamFile = NULL;
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uint32_t codec, file_size, block_size, sample_rate, block_align;
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int32_t loop_start;
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off_t start_offset;
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int channel_count, loop_flag = 0;
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/* check extensions */
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if ( !check_extensions(streamFile, "bgw") )
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goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x42474d53 || /* "BGMS" */
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read_32bitBE(0x04,streamFile) != 0x74726561 || /* "trea" */
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read_32bitBE(0x08,streamFile) != 0x6d000000 ) /* "m\0\0\0" */
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goto fail;
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codec = read_32bitLE(0x0c,streamFile);
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file_size = read_32bitLE(0x10,streamFile);
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/* file_id = read_32bitLE(0x14,streamFile); */
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block_size = read_32bitLE(0x18,streamFile);
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loop_start = read_32bitLE(0x1c,streamFile);
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sample_rate = (read_32bitLE(0x20,streamFile) + read_32bitLE(0x24,streamFile)) & 0x7FFFFFFF; /* bizarrely obfuscated sample rate */
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start_offset = read_32bitLE(0x28,streamFile);
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/* 0x2c: unk (vol?) */
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/* 0x2d: unk (0x10?) */
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channel_count = read_8bit(0x2e,streamFile);
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block_align = (uint8_t)read_8bit(0x2f,streamFile);
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if (file_size != get_streamfile_size(streamFile))
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goto fail;
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loop_flag = (loop_start > 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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vgmstream->meta_type = meta_FFXI_BGW;
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vgmstream->sample_rate = sample_rate;
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switch (codec) {
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case 0: /* PS ADPCM */
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vgmstream->coding_type = coding_PSX_cfg;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = (block_align / 2) + 1; /* half, even if channels = 1 */
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vgmstream->num_samples = block_size * block_align;
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if (loop_flag) {
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vgmstream->loop_start_sample = (loop_start-1) * block_align;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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break;
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#ifdef VGM_USE_FFMPEG
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case 3: { /* ATRAC3 (encrypted) */
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size_t data_size = file_size - start_offset;
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int encoder_delay, block_align;
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encoder_delay = 1024*2 + 69*2; /* observed value, all files start at +2200 (PS-ADPCM also starts around 50-150 samples in) */
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block_align = 0xC0 * vgmstream->channels; /* 0x00 in header */
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vgmstream->num_samples = block_size - encoder_delay; /* atrac3_bytes_to_samples gives block_size */
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temp_streamFile = setup_bgw_atrac3_streamfile(streamFile, start_offset,data_size, 0xC0,channel_count);
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if (!temp_streamFile) goto fail;
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vgmstream->codec_data = init_ffmpeg_atrac3_raw(temp_streamFile, 0x00,data_size, vgmstream->num_samples,vgmstream->channels,vgmstream->sample_rate, block_align, encoder_delay);
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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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if (loop_flag) {
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vgmstream->loop_start_sample = loop_start - encoder_delay;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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close_streamfile(temp_streamFile);
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break;
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}
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#endif
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default:
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goto fail;
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}
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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_streamfile(temp_streamFile);
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* SPW (SEWave) - from PlayOnline viewer for Final Fantasy XI (PC) */
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VGMSTREAM * init_vgmstream_spw(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE *temp_streamFile = NULL;
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uint32_t codec, file_size, block_size, sample_rate, block_align;
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int32_t loop_start;
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off_t start_offset;
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int channel_count, loop_flag = 0;
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/* check extensions */
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if ( !check_extensions(streamFile, "spw") )
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goto fail;
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/* check header */
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if (read_32bitBE(0,streamFile) != 0x53655761 || /* "SeWa" */
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read_32bitBE(4,streamFile) != 0x76650000) /* "ve\0\0" */
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goto fail;
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file_size = read_32bitLE(0x08,streamFile);
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codec = read_32bitLE(0x0c,streamFile);
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/* file_id = read_32bitLE(0x10,streamFile);*/
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block_size = read_32bitLE(0x14,streamFile);
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loop_start = read_32bitLE(0x18,streamFile);
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sample_rate = (read_32bitLE(0x1c,streamFile) + read_32bitLE(0x20,streamFile)) & 0x7FFFFFFF; /* bizarrely obfuscated sample rate */
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start_offset = read_32bitLE(0x24,streamFile);
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/* 0x2c: unk (0x00?) */
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/* 0x2d: unk (0x00/01?) */
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channel_count = read_8bit(0x2a,streamFile);
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/*0x2b: unk (0x01 when PCM, 0x10 when VAG?) */
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block_align = read_8bit(0x2c,streamFile);
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if (file_size != get_streamfile_size(streamFile))
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goto fail;
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loop_flag = (loop_start > 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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vgmstream->meta_type = meta_FFXI_SPW;
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vgmstream->sample_rate = sample_rate;
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switch (codec) {
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case 0: /* PS ADPCM */
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vgmstream->coding_type = coding_PSX_cfg;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = (block_align / 2) + 1; /* half, even if channels = 1 */
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vgmstream->num_samples = block_size * block_align;
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if (loop_flag) {
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vgmstream->loop_start_sample = (loop_start-1) * block_align;;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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break;
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case 1: /* PCM */
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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vgmstream->num_samples = block_size;
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if (loop_flag) {
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vgmstream->loop_start_sample = (loop_start-1);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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break;
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#ifdef VGM_USE_FFMPEG
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case 3: { /* ATRAC3 (encrypted) */
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size_t data_size = file_size - start_offset;
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int encoder_delay, block_align;
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encoder_delay = 1024*2 + 69*2; /* observed value, all files start at +2200 (PS-ADPCM also starts around 50-150 samples in) */
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block_align = 0xC0 * vgmstream->channels; /* 0x00 in header */
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vgmstream->num_samples = block_size - encoder_delay; /* atrac3_bytes_to_samples gives block_size */
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temp_streamFile = setup_bgw_atrac3_streamfile(streamFile, start_offset,data_size, 0xC0,channel_count);
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if (!temp_streamFile) goto fail;
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vgmstream->codec_data = init_ffmpeg_atrac3_raw(temp_streamFile, 0x00,data_size, vgmstream->num_samples,vgmstream->channels,vgmstream->sample_rate, block_align, encoder_delay);
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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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if (loop_flag) {
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vgmstream->loop_start_sample = loop_start - encoder_delay;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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close_streamfile(temp_streamFile);
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break;
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}
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#endif
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default:
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goto fail;
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}
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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_streamfile(temp_streamFile);
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close_vgmstream(vgmstream);
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return NULL;
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}
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