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mpv/libmpcodecs/ad_twin.c

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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "ad_internal.h"
#include "vqf.h"
#include "loader/ldt_keeper.h"
#include "loader/wine/windef.h"
#include "libaf/af_format.h"
#include "help_mp.h"
static ad_info_t info =
{
"TWinVQ decoder",
"vqf",
"Roberto Togni",
"Nick Kurshev",
"Ported from MPlayerXP"
};
LIBAD_EXTERN(twin)
void* WINAPI LoadLibraryA(char* name);
void* WINAPI GetProcAddress(void* handle, char* func);
int WINAPI FreeLibrary(void* handle);
static int (*TvqInitialize)( headerInfo *setupInfo, INDEX *index, int dispErrorMessageBox );
static void (*TvqTerminate)( INDEX *index );
static void (*TvqGetVectorInfo)(int *bits0[], int *bits1[]);
static void (*TvqDecodeFrame)(INDEX *indexp, float out[]);
static int (*TvqWtypeToBtype)( int w_type, int *btype );
static void (*TvqUpdateVectorInfo)(int varbits, int *ndiv, int bits0[], int bits1[]);
static int (*TvqCheckVersion)(char *versionID);
static void (*TvqGetConfInfo)(tvqConfInfo *cf);
static int (*TvqGetFrameSize)();
static int (*TvqGetNumFixedBitsPerFrame)();
#define BYTE_BIT 8
#define BBUFSIZ 1024 /* Bit buffer size (bytes) */
#define BBUFLEN (BBUFSIZ*BYTE_BIT) /* Bit buffer length (bits) */
typedef struct vqf_priv_s
{
float pts;
WAVEFORMATEX o_wf; // out format
INDEX index;
tvqConfInfo cf;
headerInfo hi;
int *bits_0[N_INTR_TYPE], *bits_1[N_INTR_TYPE];
unsigned framesize;
/* stream related */
int readable;
int ptr; /* current point in the bit buffer */
int nbuf; /* bit buffer size */
char buf[BBUFSIZ]; /* the bit buffer */
int skip_cnt;
}vqf_priv_t;
static void* vqf_dll;
static int load_dll( char *libname )
{
#ifdef WIN32_LOADER
Setup_LDT_Keeper();
#endif
vqf_dll = LoadLibraryA(libname);
if( vqf_dll == NULL )
{
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "failed loading dll\n" );
return 0;
}
TvqInitialize = GetProcAddress(vqf_dll,"TvqInitialize");
TvqTerminate = GetProcAddress(vqf_dll,"TvqTerminate");
TvqGetVectorInfo = GetProcAddress(vqf_dll,"TvqGetVectorInfo");
TvqDecodeFrame = GetProcAddress(vqf_dll,"TvqDecodeFrame");
TvqWtypeToBtype = GetProcAddress(vqf_dll,"TvqWtypeToBtype");
TvqUpdateVectorInfo = GetProcAddress(vqf_dll,"TvqUpdateVectorInfo");
TvqCheckVersion = GetProcAddress(vqf_dll,"TvqCheckVersion");
TvqGetConfInfo = GetProcAddress(vqf_dll,"TvqGetConfInfo");
TvqGetFrameSize = GetProcAddress(vqf_dll,"TvqGetFrameSize");
TvqGetNumFixedBitsPerFrame = GetProcAddress(vqf_dll,"TvqGetNumFixedBitsPerFrame");
return TvqInitialize && TvqTerminate && TvqGetVectorInfo &&
TvqDecodeFrame && TvqWtypeToBtype && TvqUpdateVectorInfo &&
TvqCheckVersion && TvqGetConfInfo && TvqGetFrameSize &&
TvqGetNumFixedBitsPerFrame;
}
void print_wave_header(WAVEFORMATEX *h, int verbose_level);
static int init_vqf_audio_codec(sh_audio_t *sh_audio){
WAVEFORMATEX *in_fmt=sh_audio->wf;
vqf_priv_t*priv=sh_audio->context;
int ver;
mp_msg(MSGT_DECAUDIO, MSGL_INFO, "======= Win32 (TWinVQ) AUDIO Codec init =======\n");
sh_audio->channels=in_fmt->nChannels;
sh_audio->samplerate=in_fmt->nSamplesPerSec;
sh_audio->sample_format=AF_FORMAT_S16_NE;
// sh_audio->sample_format=AF_FORMAT_FLOAT_NE;
sh_audio->samplesize=af_fmt2bits(sh_audio->sample_format)/8;
priv->o_wf.nChannels=in_fmt->nChannels;
priv->o_wf.nSamplesPerSec=in_fmt->nSamplesPerSec;
priv->o_wf.nBlockAlign=sh_audio->samplesize*in_fmt->nChannels;
priv->o_wf.nAvgBytesPerSec=in_fmt->nBlockAlign*in_fmt->nChannels;
priv->o_wf.wFormatTag=0x01;
priv->o_wf.wBitsPerSample=in_fmt->wBitsPerSample;
priv->o_wf.cbSize=0;
if( mp_msg_test(MSGT_DECAUDIO,MSGL_V) )
{
mp_msg(MSGT_DECAUDIO, MSGL_V, "Input format:\n");
print_wave_header(in_fmt, MSGL_V);
mp_msg(MSGT_DECAUDIO, MSGL_V, "Output fmt:\n");
print_wave_header(&priv->o_wf, MSGL_V);
}
memcpy(&priv->hi,&in_fmt[1],sizeof(headerInfo));
if((ver=TvqInitialize(&priv->hi,&priv->index,0))){
const char *tvqe[]={
"No errors",
"General error",
"Wrong version",
"Channel setting error",
"Wrong coding mode",
"Inner parameter setting error",
"Wrong number of VQ pre-selection candidates, used only in encoder" };
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Tvq initialization error: %s\n",ver>=0&&ver<7?tvqe[ver]:"Unknown");
return 0;
}
ver=TvqCheckVersion(priv->hi.ID);
if(ver==TVQ_UNKNOWN_VERSION){
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Tvq unknown version of stream\n" );
return 0;
}
TvqGetConfInfo(&priv->cf);
TvqGetVectorInfo(priv->bits_0,priv->bits_1);
priv->framesize=TvqGetFrameSize();
sh_audio->audio_in_minsize=priv->framesize*in_fmt->nChannels;
sh_audio->a_in_buffer_size=4*sh_audio->audio_in_minsize;
sh_audio->a_in_buffer=av_malloc(sh_audio->a_in_buffer_size);
sh_audio->a_in_buffer_len=0;
return 1;
}
static int close_vqf_audio_codec(sh_audio_t *sh_audio)
{
vqf_priv_t*priv=sh_audio->context;
TvqTerminate(&priv->index);
return 1;
}
int init(sh_audio_t *sh_audio)
{
return 1;
}
int preinit(sh_audio_t *sh_audio)
{
/* Win32 VQF audio codec: */
vqf_priv_t *priv;
if(!(sh_audio->context=malloc(sizeof(vqf_priv_t)))) return 0;
priv=sh_audio->context;
if(!load_dll(sh_audio->codec->dll))
{
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "win32.dll looks broken :(\n");
return 0;
}
if(!init_vqf_audio_codec(sh_audio)){
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "TWinVQ initialization fail\n");
return 0;
}
mp_msg(MSGT_DECAUDIO, MSGL_INFO, "INFO: TWinVQ (%s) audio codec init OK!\n",sh_audio->codec->dll);
priv->skip_cnt = 2;
return 1;
}
void uninit(sh_audio_t *sh)
{
close_vqf_audio_codec(sh);
free(sh->context);
FreeLibrary(vqf_dll);
}
static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
{
switch(cmd) {
case ADCTRL_QUERY_FORMAT:
return CONTROL_TRUE;
default:
return CONTROL_UNKNOWN;
}
}
static int bread(char *data, /* Output: Output data array */
int size, /* Input: Length of each data */
int nbits, /* Input: Number of bits to write */
sh_audio_t *sh) /* Input: File pointer */
{
/*--- Variables ---*/
int ibits, iptr, idata, ibufadr, ibufbit, icl;
unsigned char mask, tmpdat;
int retval;
vqf_priv_t *priv=sh->context;
/*--- Main operation ---*/
retval = 0;
mask = 0x1;
for ( ibits=0; ibits<nbits; ibits++ ){
if ( priv->readable == 0 ){ /* when the file data buffer is empty */
priv->nbuf = demux_read_data(sh->ds, priv->buf, BBUFSIZ);
priv->nbuf *= 8;
priv->readable = 1;
}
iptr = priv->ptr; /* current file data buffer pointer */
if ( iptr >= priv->nbuf ) /* If data file is empty then return */
return retval;
ibufadr = iptr/BYTE_BIT; /* current file data buffer address */
ibufbit = iptr%BYTE_BIT; /* current file data buffer bit */
/* tmpdat = stream->buf[ibufadr] >> (BYTE_BIT-ibufbit-1); */
tmpdat = (unsigned char)priv->buf[ibufadr];
tmpdat >>= (BYTE_BIT-ibufbit-1);
/* current data bit */
idata = ibits*size; /* output data address */
data[idata] = (char)(tmpdat & mask); /* set output data */
for (icl=1; icl<size; icl++)
data[idata+icl] = 0; /* clear the rest output data buffer */
priv->ptr += 1; /* update data buffer pointer */
if (priv->ptr == BBUFLEN){
priv->ptr = 0;
priv->readable = 0;
}
++retval;
}
return retval;
}
#define BITS_INT (sizeof(int)*8)
static int get_bstm(int *data, /* Input: input data */
unsigned nbits, /* Input: number of bits */
sh_audio_t *sh) /* Input: bit file pointer */
{
unsigned ibit;
unsigned mask;
unsigned work;
char tmpbit[BITS_INT];
int retval;
if ( nbits > BITS_INT ){
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "get_bstm(): %d: %d Error.\n",
nbits, BITS_INT);
exit(1);
}
retval = bread(tmpbit, sizeof(*tmpbit), nbits, sh);
for (ibit=retval; ibit<nbits; ibit++){
tmpbit[ibit] = 0;
}
mask = 0x1<<(nbits-1);
work=0;
for ( ibit=0; ibit<nbits; ibit++ ){
work += mask*tmpbit[ibit];
mask >>= 1;
}
*data = work;
return retval;
}
static int GetVqInfo( tvqConfInfoSubBlock *cfg,
int bits0[],
int bits1[],
int variableBits,
INDEX *index,
sh_audio_t *sh)
{
int idiv;
int bitcount = 0;
if ( index->btype == BLK_LONG ){
TvqUpdateVectorInfo( variableBits, &cfg->ndiv, bits0, bits1 ); // re-calculate VQ bits
}
for ( idiv=0; idiv<cfg->ndiv; idiv++ ){
bitcount += get_bstm(&index->wvq[idiv],bits0[idiv],sh); /* CB 0 */
bitcount += get_bstm(&index->wvq[idiv+cfg->ndiv],bits1[idiv],sh); /* CB 1 */
}
return bitcount;
}
static int GetBseInfo( tvqConfInfo *cf, tvqConfInfoSubBlock *cfg, INDEX *index, sh_audio_t *sh)
{
int i_sup, isf, itmp, idiv;
int bitcount = 0;
for ( i_sup=0; i_sup<cf->N_CH; i_sup++ ){
for ( isf=0; isf<cfg->nsf; isf++ ){
for ( idiv=0; idiv<cfg->fw_ndiv; idiv++ ){
itmp = idiv + ( isf + i_sup * cfg->nsf ) * cfg->fw_ndiv;
bitcount += get_bstm(&index->fw[itmp],cfg->fw_nbit,sh);
}
}
}
for ( i_sup=0; i_sup<cf->N_CH; i_sup++ ){
for ( isf=0; isf<cfg->nsf; isf++ ){
bitcount += get_bstm(&index->fw_alf[i_sup * cfg->nsf + isf],cf->FW_ARSW_BITS,sh);
}
}
return bitcount;
}
static int GetGainInfo(tvqConfInfo *cf, tvqConfInfoSubBlock *cfg, INDEX *index, sh_audio_t *sh )
{
int i_sup, iptop, isf;
int bitcount = 0;
for ( i_sup=0; i_sup<cf->N_CH; i_sup++ ){
iptop = ( cfg->nsubg + 1 ) * i_sup;
bitcount += get_bstm(&index->pow[iptop], cf->GAIN_BITS,sh);
for ( isf=0; isf<cfg->nsubg; isf++ ){
bitcount += get_bstm(&index->pow[iptop+isf+1], cf->SUB_GAIN_BITS,sh);
}
}
return bitcount;
}
static int GetLspInfo( tvqConfInfo *cf, INDEX *index, sh_audio_t *sh )
{
int i_sup, itmp;
int bitcount = 0;
for ( i_sup=0; i_sup<cf->N_CH; i_sup++ ){
bitcount += get_bstm(&index->lsp[i_sup][0], cf->LSP_BIT0,sh); /* pred. switch */
bitcount += get_bstm(&index->lsp[i_sup][1], cf->LSP_BIT1,sh); /* first stage */
for ( itmp=0; itmp<cf->LSP_SPLIT; itmp++ ){ /* second stage */
bitcount += get_bstm(&index->lsp[i_sup][itmp+2], cf->LSP_BIT2,sh);
}
}
return bitcount;
}
static int GetPpcInfo( tvqConfInfo *cf, INDEX *index, sh_audio_t *sh)
{
int idiv, i_sup;
int bitcount = 0;
vqf_priv_t*priv=sh->context;
for ( idiv=0; idiv<cf->N_DIV_P; idiv++ ){
bitcount += get_bstm(&(index->pls[idiv]), priv->bits_0[BLK_PPC][idiv],sh); /*CB0*/
bitcount += get_bstm(&(index->pls[idiv+cf->N_DIV_P]), priv->bits_1[BLK_PPC][idiv],sh);/*CB1*/
}
for (i_sup=0; i_sup<cf->N_CH; i_sup++){
bitcount += get_bstm(&(index->pit[i_sup]), cf->BASF_BIT,sh);
bitcount += get_bstm(&(index->pgain[i_sup]), cf->PGAIN_BIT,sh);
}
return bitcount;
}
static int GetEbcInfo( tvqConfInfo *cf, tvqConfInfoSubBlock *cfg, INDEX *index, sh_audio_t *sh)
{
int i_sup, isf, itmp;
int bitcount = 0;
for ( i_sup=0; i_sup<cf->N_CH; i_sup++ ){
for ( isf=0; isf<cfg->nsf; isf++){
int indexSfOffset = isf * ( cfg->ncrb - cfg->ebc_crb_base ) - cfg->ebc_crb_base;
for ( itmp=cfg->ebc_crb_base; itmp<cfg->ncrb; itmp++ ){
bitcount += get_bstm(&index->bc[i_sup][itmp+indexSfOffset], cfg->ebc_bits,sh);
}
}
}
return bitcount;
}
static int vqf_read_frame(sh_audio_t *sh,INDEX *index)
{
/*--- Variables ---*/
tvqConfInfoSubBlock *cfg;
int variableBits;
int bitcount;
int numFixedBitsPerFrame = TvqGetNumFixedBitsPerFrame();
int btype;
vqf_priv_t *priv=sh->context;
/*--- Initialization ---*/
variableBits = 0;
bitcount = 0;
/*--- read block independent factors ---*/
/* Window type */
bitcount += get_bstm( &index->w_type, priv->cf.BITS_WTYPE, sh );
if ( TvqWtypeToBtype( index->w_type, &index->btype ) ) {
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Error: unknown window type: %d\n", index->w_type);
return 0;
}
btype = index->btype;
/*--- read block dependent factors ---*/
cfg = &priv->cf.cfg[btype]; // set the block dependent paremeters table
bitcount += variableBits;
/* Interleaved vector quantization */
bitcount += GetVqInfo( cfg, priv->bits_0[btype], priv->bits_1[btype], variableBits, index, sh );
/* Bark-scale envelope */
bitcount += GetBseInfo( &priv->cf, cfg, index, sh );
/* Gain */
bitcount += GetGainInfo( &priv->cf, cfg, index, sh );
/* LSP */
bitcount += GetLspInfo( &priv->cf, index, sh );
/* PPC */
if ( cfg->ppc_enable ){
bitcount += GetPpcInfo( &priv->cf, index, sh );
}
/* Energy Balance Calibration */
if ( cfg->ebc_enable ){
bitcount += GetEbcInfo( &priv->cf, cfg, index, sh );
}
return bitcount == numFixedBitsPerFrame ? bitcount/8 : 0;
}
static void frtobuf_s16(float out[], /* Input --- input data frame */
short bufout[], /* Output --- output data buffer array */
unsigned frameSize, /* Input --- frame size */
unsigned numChannels) /* Input --- number of channels */
{
/*--- Variables ---*/
unsigned ismp, ich;
float *ptr;
float dtmp;
for ( ich=0; ich<numChannels; ich++ ){
ptr = out+ich*frameSize;
for ( ismp=0; ismp<frameSize; ismp++ ){
dtmp = ptr[ismp];
if ( dtmp >= 0. ) {
if ( dtmp > 32700. )
dtmp = 32700.;
bufout[ismp*numChannels+ich] = (short)(dtmp+0.5);
} else {
if ( dtmp < -32700. )
dtmp = -32700.;
bufout[ismp*numChannels+ich] = (short)(dtmp-0.5);
}
}
}
}
static void frtobuf_float(float out[], /* Input --- input data frame */
float bufout[], /* Output --- output data buffer array */
unsigned frameSize, /* Input --- frame size */
unsigned numChannels) /* Input --- number of channels */
{
/*--- Variables ---*/
unsigned ismp, ich;
float *ptr;
float dtmp;
for ( ich=0; ich<numChannels; ich++ ){
ptr = out+ich*frameSize;
for ( ismp=0; ismp<frameSize; ismp++ ){
dtmp = ptr[ismp];
if ( dtmp >= 0. ) {
if ( dtmp > 32700. )
dtmp = 32700.;
bufout[ismp*numChannels+ich] = dtmp/32767.;
} else {
if ( dtmp < -32700. )
dtmp = -32700.;
bufout[ismp*numChannels+ich] = dtmp/32767.;
}
}
}
}
int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
int l, len=0;
vqf_priv_t *priv=sh_audio->context;
while(len<minlen)
{
float out[priv->framesize*sh_audio->channels];
l=vqf_read_frame(sh_audio,&priv->index);
if(!l) break;
TvqDecodeFrame(&priv->index, out);
if (priv->skip_cnt) {
// Ingnore first two frames, replace them with silence
priv->skip_cnt--;
memset(buf, 0, priv->framesize*sh_audio->channels*sh_audio->samplesize);
} else {
if (sh_audio->sample_format == AF_FORMAT_S16_NE)
frtobuf_s16(out, (short *)buf, priv->framesize, sh_audio->channels);
else
frtobuf_float(out, (float *)buf, priv->framesize, sh_audio->channels);
}
len += priv->framesize*sh_audio->channels*sh_audio->samplesize;
buf += priv->framesize*sh_audio->channels*sh_audio->samplesize;
}
return len;
}
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