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Fix some .awc [Max Payne 3 (PC)]

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bnnm 2020-03-01 12:25:40 +01:00
parent bbaf55dd43
commit c11a3f822d
2 changed files with 28 additions and 13 deletions
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39
src/layout/blocked_awc.c
View File

@ -4,19 +4,21 @@
#include "../vgmstream.h"
static size_t get_block_header_size(STREAMFILE *streamFile, off_t offset, int channels, int big_endian);
static size_t get_channel_header_size(STREAMFILE* sf, off_t offset, int channels, int big_endian);
static size_t get_block_header_size(STREAMFILE* sf, off_t offset, size_t channel_header_size, int channels, int big_endian);
/* AWC music chunks */
void block_update_awc(off_t block_offset, VGMSTREAM * vgmstream) {
STREAMFILE* streamFile = vgmstream->ch[0].streamfile;
STREAMFILE* sf = vgmstream->ch[0].streamfile;
int32_t (*read_32bit)(off_t,STREAMFILE*) = vgmstream->codec_endian ? read_32bitBE : read_32bitLE;
size_t header_size, entries, block_size, block_samples;
size_t channel_header_size;
int i;
/* assumed only AWC_IMA enters here, MPEG/XMA2 need special parsing as blocked layout is too limited */
entries = read_32bit(block_offset + 0x18*0 + 0x04, streamFile); /* assumed same for all channels */
block_samples = entries * (0x800-4)*2;
entries = read_32bit(block_offset + 0x04, sf); /* se first channel, assume all are the same */
//block_samples = entries * (0x800-4)*2; //todo use
block_samples = read_32bit(block_offset + 0x0c, sf);
block_size = vgmstream->full_block_size;
vgmstream->current_block_offset = block_offset;
@ -25,32 +27,45 @@ void block_update_awc(off_t block_offset, VGMSTREAM * vgmstream) {
/* starts with a header block */
/* for each channel
* 0x00: start entry within channel (ie. entries * ch)
* 0x00: start entry within channel (ie. entries * ch) but may be off by +1/+2
* 0x04: entries
* 0x08: samples to discard in the beginning of this block (MPEG only?)
* 0x0c: samples in channel (for MPEG/XMA2 can vary between channels)
* 0x10: MPEG only: close to number of frames but varies a bit?
* 0x14: MPEG only: channel usable data size (not counting padding)
* (next fields don't exist in later versions for IMA)
* 0x10: (MPEG only, empty otherwise) close to number of frames but varies a bit?
* 0x14: (MPEG only, empty otherwise) channel usable data size (not counting padding)
* for each channel
* 32b * entries = global samples per frame in each block (for MPEG probably per full frame)
*/
header_size = get_block_header_size(streamFile, block_offset, vgmstream->channels, vgmstream->codec_endian);
channel_header_size = get_channel_header_size(sf, block_offset, vgmstream->channels, vgmstream->codec_endian);
header_size = get_block_header_size(sf, block_offset, channel_header_size, vgmstream->channels, vgmstream->codec_endian);
for (i = 0; i < vgmstream->channels; i++) {
vgmstream->ch[i].offset = block_offset + header_size + 0x800*entries*i;
VGM_ASSERT(entries != read_32bit(block_offset + channel_header_size*i + 0x04, sf), "AWC: variable number of entries found at %lx\n", block_offset);
}
}
static size_t get_block_header_size(STREAMFILE *streamFile, off_t offset, int channels, int big_endian) {
static size_t get_channel_header_size(STREAMFILE* sf, off_t offset, int channels, int big_endian) {
int32_t (*read_32bit)(off_t,STREAMFILE*) = big_endian ? read_32bitBE : read_32bitLE;
/* later games have an smaller channel header, try to detect using
* an empty field not in IMA */
if (read_32bit(offset + 0x14, sf) == 0x00)
return 0x18;
return 0x10;
}
static size_t get_block_header_size(STREAMFILE* sf, off_t offset, size_t channel_header_size, int channels, int big_endian) {
size_t header_size = 0;
int i;
int entries = channels;
int32_t (*read_32bit)(off_t,STREAMFILE*) = big_endian ? read_32bitBE : read_32bitLE;
for (i = 0; i < entries; i++) {
header_size += 0x18;
header_size += read_32bit(offset + 0x18*i + 0x04, streamFile) * 0x04; /* entries in the table */
header_size += channel_header_size;
header_size += read_32bit(offset + channel_header_size*i + 0x04, sf) * 0x04; /* entries in the table */
}
if (header_size % 0x800) /* padded */

2
src/meta/awc.c
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@ -301,7 +301,7 @@ static int parse_awc_header(STREAMFILE* streamFile, awc_header* awc) {
(awc->codec && awc->codec != codec)) {
VGM_LOG("AWC: found header diffs in channel %i, ns=%i vs %i, sr=%i vs %i, c=%i vs %i\n",
ch, awc->num_samples, num_samples, awc->sample_rate, sample_rate, awc->codec, codec);
goto fail;
//goto fail; //todo some Max Payne 3 cutscene channels have huge sample diffs
}
awc->num_samples = num_samples;