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https://github.com/vgmstream/vgmstream.git
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262 lines
11 KiB
C
262 lines
11 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* VAGp - Sony SDK format, created by various tools */
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VGMSTREAM * init_vgmstream_vag(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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size_t file_size, channel_size, interleave, interleave_first = 0, interleave_first_skip = 0;
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meta_t meta_type;
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int channel_count = 0, loop_flag, sample_rate;
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uint32_t vag_id, version;
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int32_t loop_start_sample = 0, loop_end_sample = 0;
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int allow_dual_stereo = 0;
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/* checks */
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/* .vag: standard
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* .swag: Frantix (PSP)
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* .str: Ben10 Galactic Racing
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* .vig: MX vs. ATV Untamed (PS2)
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* .l/r: Crash Nitro Kart (PS2), Gradius V (PS2)
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* .vas: Kingdom Hearts II (PS2)
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* .khv: fake for .vas */
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if ( !check_extensions(streamFile,"vag,swag,str,vig,l,r,vas,khv") )
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goto fail;
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/* check VAG Header */
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if (((read_32bitBE(0x00,streamFile) & 0xFFFFFF00) != 0x56414700) && /* "VAG" */
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((read_32bitLE(0x00,streamFile) & 0xFFFFFF00) != 0x56414700))
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goto fail;
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file_size = get_streamfile_size(streamFile);
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/* version used to create the file:
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* - 00000000 = v1.8 PC,
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* - 00000002 = v1.3 Mac (used?)
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* - 00000003 = v1.6+ Mac
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* - 00000020 = v2.0 PC (most common)
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* - 00000004 = ? (later games)
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* - 00000006 = ? (vagconv)
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* - 00020001 = v2.1 (vagconv2)
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* - 00030000 = v3.0 (vagconv2) */
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version = (uint32_t)read_32bitBE(0x04,streamFile);
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/* 0x08-0c: reserved */
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channel_size = read_32bitBE(0x0c,streamFile);
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sample_rate = read_32bitBE(0x10,streamFile);
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/* 0x14-20 reserved */
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/* 0x20-30: name (optional) */
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/* 0x30: data start (first 0x10 usually 0s to init SPU) */
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/* check variation */
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vag_id = read_32bitBE(0x00,streamFile);
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switch(vag_id) {
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case 0x56414731: /* "VAG1" (1 channel) [Metal Gear Solid 3 (PS2)] */
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meta_type = meta_PS2_VAG1;
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start_offset = 0x40; /* 0x30 is extra data in VAG1 */
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channel_count = 1;
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interleave = 0;
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loop_flag = 0;
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break;
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case 0x56414732: /* "VAG2" (2 channels) [Metal Gear Solid 3 (PS2)] */
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meta_type = meta_PS2_VAG2;
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start_offset = 0x40; /* 0x30 is extra data in VAG2 */
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channel_count = 2;
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interleave = 0x800;
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loop_flag = 0;
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break;
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case 0x56414769: /* "VAGi" (interleaved) */
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meta_type = meta_PS2_VAGi;
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start_offset = 0x800;
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channel_count = 2;
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interleave = read_32bitLE(0x08,streamFile);
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loop_flag = 0;
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break;
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case 0x70474156: /* pGAV (little endian / stereo) [Jak 3 (PS2), Jak X (PS2)] */
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meta_type = meta_PS2_pGAV;
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start_offset = 0x30;
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if (read_32bitBE(0x20,streamFile) == 0x53746572) { /* "Ster" */
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channel_count = 2;
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if (read_32bitLE(0x2000,streamFile) == 0x56414770) /* "pGAV" */
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interleave = 0x2000; /* Jak 3 interleave, includes header */
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else if (read_32bitLE(0x1000,streamFile) == 0x56414770) /* "pGAV" */
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interleave = 0x1000; /* Jak X interleave, includes header */
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else
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interleave = 0x2000; /* Jak 3 interleave in rare files, no header */
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interleave_first = interleave - start_offset; /* interleave includes header */
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interleave_first_skip = start_offset;
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}
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else {
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channel_count = 1;
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interleave = 0;
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}
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channel_size = read_32bitLE(0x0C,streamFile) / channel_count;
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sample_rate = read_32bitLE(0x10,streamFile);
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//todo adjust channel_size, includes part of header?
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loop_flag = 0;
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break;
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case 0x56414770: /* "VAGp" (standard and variations) */
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meta_type = meta_PS2_VAGp;
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if (check_extensions(streamFile,"vig")) {
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/* MX vs. ATV Untamed (PS2) */
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start_offset = 0x800 - 0x20;
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channel_count = 2;
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interleave = 0x10;
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loop_flag = 0;
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}
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else if (check_extensions(streamFile,"swag")) { /* also "VAGp" at (file_size / channels) */
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/* Frantix (PSP) */
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start_offset = 0x40; /* channel_size ignores empty frame */
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channel_count = 2;
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interleave = file_size / channel_count;
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channel_size = read_32bitLE(0x0c,streamFile);
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sample_rate = read_32bitLE(0x10,streamFile);
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loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
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}
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else if (read_32bitBE(0x6000,streamFile) == 0x56414770) { /* "VAGp" */
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/* The Simpsons Wrestling (PS1) */
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start_offset = 0x30;
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channel_count = 2;
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interleave = 0x6000;
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interleave_first = interleave - start_offset; /* includes header */
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interleave_first_skip = start_offset;
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loop_flag = 0;
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}
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else if (read_32bitBE(0x1000,streamFile) == 0x56414770) { /* "VAGp" */
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/* Shikigami no Shiro (PS2) */
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start_offset = 0x30;
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channel_count = 2;
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interleave = 0x1000;
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interleave_first = interleave - start_offset; /* includes header */
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interleave_first_skip = start_offset;
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loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
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}
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else if (read_32bitBE(0x30,streamFile) == 0x56414770) { /* "VAGp" */
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/* The Red Star (PS2) */
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start_offset = 0x60; /* two VAGp headers */
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channel_count = 2;
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if ((file_size - start_offset) % 0x4000 == 0)
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interleave = 0x4000;
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else if ((file_size - start_offset) % 0x4180 == 0)
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interleave = 0x4180;
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else
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goto fail;
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loop_flag = 0; /* loop segments */
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}
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else if (version == 0x40000000) {
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/* Killzone (PS2) */
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start_offset = 0x30;
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channel_count = 1;
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interleave = 0;
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channel_size = read_32bitLE(0x0C,streamFile) / channel_count;
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sample_rate = read_32bitLE(0x10,streamFile);
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loop_flag = 0;
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}
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else if (version == 0x00020001 || version == 0x00030000) {
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/* standard Vita/PS4 .vag [Chronovolt (Vita), Grand Kingdom (PS4)] */
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start_offset = 0x30;
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interleave = 0x10;
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/* channels are at 0x1e, except Ukiyo no Roushi (Vita), which has
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* loop start/end frame (but also uses PS-ADPCM flags) */
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if (read_32bitBE(0x18,streamFile) == 0
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&& (read_32bitBE(0x1c,streamFile) & 0xFFFF00FF) == 0
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&& read_8bit(0x1e,streamFile) < 16) {
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channel_count = read_8bit(0x1e,streamFile);
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if (channel_count == 0)
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channel_count = 1; /* ex. early games [Lumines (Vita)] */
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}
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else {
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channel_count = 1;
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}
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channel_size = channel_size / channel_count;
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loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
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}
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else if (version == 0x00000004 && channel_size == file_size - 0x60 && read_32bitBE(0x1c, streamFile) != 0) { /* also .vas */
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/* Kingdom Hearts II (PS2) */
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start_offset = 0x60;
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interleave = 0x10;
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loop_start_sample = read_32bitBE(0x14,streamFile);
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loop_end_sample = read_32bitBE(0x18,streamFile);
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loop_flag = (loop_end_sample > 0); /* maybe at 0x1d */
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channel_count = read_8bit(0x1e,streamFile);
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/* 0x1f: possibly volume */
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channel_size = channel_size / channel_count;
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/* mono files also have channel/volume, but start at 0x30 and are probably named .vag */
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}
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else if (read_32bitBE(0x30,streamFile) == 0x53544552 /* "STER" */
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&& read_32bitBE(0x34,streamFile) == 0x454F5641 /* "EOVA" */
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&& read_32bitBE(0x38,streamFile) == 0x47324B00){ /* "G2K " */
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/* The Simpsons Skateboarding (PS2) */
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start_offset = 0x800;
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channel_count = 2;
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interleave = 0x800;
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loop_flag = 0;
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}
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else {
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/* standard PS1/PS2/PS3 .vag [Ecco the Dolphin (PS2), Legasista (PS3)] */
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start_offset = 0x30;
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interleave = 0;
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channel_count = 1;
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loop_flag = ps_find_loop_offsets_full(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
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allow_dual_stereo = 1; /* often found with external L/R files */
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}
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break;
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default:
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goto fail;
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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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vgmstream->meta_type = meta_type;
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vgmstream->allow_dual_stereo = allow_dual_stereo;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = ps_bytes_to_samples(channel_size,1);
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vgmstream->loop_start_sample = loop_start_sample;
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vgmstream->loop_end_sample = loop_end_sample;
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vgmstream->coding_type = coding_PSX;
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if (version == 0x00020001 || version == 0x00030000)
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vgmstream->coding_type = coding_HEVAG;
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vgmstream->layout_type = (channel_count == 1) ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = interleave;
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vgmstream->interleave_first_block_size = interleave_first;
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vgmstream->interleave_first_skip = interleave_first_skip;
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read_string(vgmstream->stream_name,0x10+1, 0x20,streamFile); /* always, can be null */
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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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