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Add alt loading mechanisms for FSB Vorbis setup/codebooks

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This commit is contained in:
bnnm 2017-03-26 15:53:56 +02:00
parent efdb885a79
commit bed84fca2d
1 changed files with 120 additions and 25 deletions
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137
src/coding/fsb_vorbis_decoder.c
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@ -3,15 +3,24 @@
#ifdef VGM_USE_VORBIS
#include <vorbis/codec.h>
#define FSB_VORBIS_ON 1 //todo recompile libvorbis with vorbis_* and remove
#define FSB_VORBIS_ON 1 //todo remove once battle-tested
#define FSB_VORBIS_USE_PRECOMPILED_FVS 0 /* if enabled vgmstream weights ~600kb more but doesn't need external .fvs packets */
#if FSB_VORBIS_ON
#if FSB_VORBIS_USE_PRECOMPILED_FVS
#include "fsb_vorbis_data.h"
#endif
#define FSB_VORBIS_DEFAULT_BUFFER_SIZE 0x8000 /* should be at least the size of the setup header, ~0x2000 */
#if FSB_VORBIS_ON
static void pcm_convert_float_to_16(vorbis_codec_data * data, sample * outbuf, int samples_to_do, float ** pcm);
static int vorbis_make_header_identification(uint8_t * buf, size_t bufsize, int channels, int sample_rate, int blocksize_short, int blocksize_long);
static int vorbis_make_header_comment(uint8_t * buf, size_t bufsize);
static int vorbis_make_header_setup(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile);
static int load_fvs_file_single(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile);
static int load_fvs_file_multi(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile);
static int load_fvs_array(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile);
#endif
/**
@ -254,49 +263,135 @@ static int vorbis_make_header_comment(uint8_t * buf, size_t bufsize) {
}
static int vorbis_make_header_setup(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile) {
int bytes;
/* try to load from external files first */
bytes = load_fvs_file_single(buf, bufsize, setup_id, streamFile);
if (bytes)
return bytes;
bytes = load_fvs_file_multi(buf, bufsize, setup_id, streamFile);
if (bytes)
return bytes;
/* try to locate from the precompiled list */
bytes = load_fvs_array(buf, bufsize, setup_id, streamFile);
if (bytes)
return bytes;
/* not found */
VGM_LOG("FSB Vorbis: setup_id %08x not found\n", setup_id);
return 0;
}
static int load_fvs_file_single(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile) {
STREAMFILE * streamFileSetup = NULL;
{
char setupname[PATH_LIMIT];
char pathname[PATH_LIMIT];
char *path;
STREAMFILE * streamFileSetup = NULL;
size_t bytes = 0;
/* read "(dir/).fvs_{setup_id}" */
streamFile->get_name(streamFile,pathname,sizeof(pathname));
/* try to get setup packet from external file first, using "(dir/).vorbis_{setup_id}" */
path = strrchr(pathname,DIR_SEPARATOR);
if (path) {
if (path)
*(path+1) = '\0';
} else {
else
pathname[0] = '\0';
}
snprintf(setupname,PATH_LIMIT,"%s.vorbis_%08x", pathname, setup_id);
snprintf(setupname,PATH_LIMIT,"%s.fvs_%08x", pathname, setup_id);
streamFileSetup = streamFile->open(streamFile,setupname,STREAMFILE_DEFAULT_BUFFER_SIZE);
}
if (streamFileSetup) {
/* file found, get contents into the buffer */
bytes = streamFileSetup->get_size(streamFileSetup);
size_t bytes = streamFileSetup->get_size(streamFileSetup);
if (bytes > bufsize) goto fail;
if (read_streamfile(buf, 0, bufsize, streamFileSetup) != bytes)
if (read_streamfile(buf, 0, bytes, streamFileSetup) != bytes)
goto fail;
streamFileSetup->close(streamFileSetup);
}
else {
/* check the index list */
VGM_LOG("FSB Vorbis: setup_id %08x not found\n", setup_id);
goto fail;
}
return bytes;
}
fail:
if (streamFileSetup) streamFileSetup->close(streamFileSetup);
return 0;
}
static int load_fvs_file_multi(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile) {
STREAMFILE * streamFileSetup = NULL;
{
char setupname[PATH_LIMIT];
char pathname[PATH_LIMIT];
char *path;
/* read "(dir/).fvs" */
streamFile->get_name(streamFile,pathname,sizeof(pathname));
path = strrchr(pathname,DIR_SEPARATOR);
if (path)
*(path+1) = '\0';
else
pathname[0] = '\0';
snprintf(setupname,PATH_LIMIT,"%s.fvs", pathname);
streamFileSetup = streamFile->open(streamFile,setupname,STREAMFILE_DEFAULT_BUFFER_SIZE);
}
if (streamFileSetup) {
/* file found: read mini-header (format by bnnm, feel free to change) and locate FVS */
int entries, i;
uint32_t offset = 0, size = 0;
if (read_32bitBE(0x0, streamFileSetup) != 0x56465653) goto fail; /* "VFVS" */
entries = read_32bitLE(0x08, streamFileSetup); /* 0x04=v0, 0x0c-0x20: reserved */
if (entries <= 0) goto fail;
for (i=0; i < entries; i++) { /* entry = id, offset, size, reserved */
if ((uint32_t)read_32bitLE(0x20 + i*0x10, streamFileSetup) == setup_id) {
offset = read_32bitLE(0x24 + i*0x10, streamFileSetup);
size = read_32bitLE(0x28 + i*0x10, streamFileSetup);
break;
}
}
if (!size || !offset || size > bufsize) goto fail;
/* read into buf */
if (read_streamfile(buf, offset, size, streamFileSetup) != size)
goto fail;
streamFileSetup->close(streamFileSetup);
return size;
}
fail:
if (streamFileSetup) streamFileSetup->close(streamFileSetup);
return 0;
}
static int load_fvs_array(uint8_t * buf, size_t bufsize, uint32_t setup_id, STREAMFILE *streamFile) {
#if FSB_VORBIS_USE_PRECOMPILED_FVS
int i, list_length;
list_length = sizeof(fvs_list) / sizeof(fvs_info);
for (i=0; i < list_length; i++) {
if (fvs_list[i].id == setup_id) {
if (fvs_list[i].size > bufsize) goto fail;
/* found: copy data as-is */
memcpy(buf,fvs_list[i].setup, fvs_list[i].size);
return fvs_list[i].size;
}
}
fail:
#endif
return 0;
}
#endif