mirror of https://github.com/mpv-player/mpv
250 lines
7.6 KiB
C
250 lines
7.6 KiB
C
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef USE_REALCODECS
|
|
|
|
#include <stddef.h>
|
|
#include <dlfcn.h>
|
|
|
|
#include "ad_internal.h"
|
|
|
|
static ad_info_t info = {
|
|
"RealAudio decoder",
|
|
"realaud",
|
|
"A'rpi",
|
|
"Florian Schneider",
|
|
"binary real audio codecs"
|
|
};
|
|
|
|
LIBAD_EXTERN(realaud)
|
|
|
|
static void *handle=NULL;
|
|
|
|
void *__builtin_new(unsigned long size) {
|
|
return malloc(size);
|
|
}
|
|
|
|
#if defined(__FreeBSD__) || defined(__NetBSD__)
|
|
void *__ctype_b=NULL;
|
|
#endif
|
|
|
|
static unsigned long (*raCloseCodec)(void*);
|
|
static unsigned long (*raDecode)(void*, char*,unsigned long,char*,unsigned long*,long);
|
|
static unsigned long (*raFlush)(unsigned long,unsigned long,unsigned long);
|
|
static unsigned long (*raFreeDecoder)(void*);
|
|
static unsigned long (*raGetFlavorProperty)(void*,unsigned long,unsigned long,int*);
|
|
//static unsigned long (*raGetNumberOfFlavors2)(void);
|
|
static unsigned long (*raInitDecoder)(void*, void*);
|
|
static unsigned long (*raOpenCodec2)(void*);
|
|
static unsigned long (*raSetFlavor)(void*,unsigned long);
|
|
//static void (*raSetDLLAccessPath)(unsigned long);
|
|
static void (*raSetPwd)(char*,char*);
|
|
|
|
typedef struct {
|
|
int samplerate;
|
|
short bits;
|
|
short channels;
|
|
int unk1;
|
|
int unk2;
|
|
int packetsize;
|
|
int unk3;
|
|
void* unk4;
|
|
} ra_init_t;
|
|
|
|
static int preinit(sh_audio_t *sh){
|
|
// let's check if the driver is available, return 0 if not.
|
|
// (you should do that if you use external lib(s) which is optional)
|
|
unsigned int result;
|
|
int len=0;
|
|
void* prop;
|
|
char path[4096];
|
|
sprintf(path, REALCODEC_PATH "/%s", sh->codec->dll);
|
|
handle = dlopen (path, RTLD_LAZY);
|
|
if(!handle){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot open dll: %s\n",dlerror());
|
|
return 0;
|
|
}
|
|
|
|
raCloseCodec = dlsym(handle, "RACloseCodec");
|
|
raDecode = dlsym(handle, "RADecode");
|
|
raFlush = dlsym(handle, "RAFlush");
|
|
raFreeDecoder = dlsym(handle, "RAFreeDecoder");
|
|
raGetFlavorProperty = dlsym(handle, "RAGetFlavorProperty");
|
|
raOpenCodec2 = dlsym(handle, "RAOpenCodec2");
|
|
raInitDecoder = dlsym(handle, "RAInitDecoder");
|
|
raSetFlavor = dlsym(handle, "RASetFlavor");
|
|
// raSetDLLAccessPath = dlsym(handle, "SetDLLAccessPath");
|
|
raSetPwd = dlsym(handle, "RASetPwd"); // optional, used by SIPR
|
|
|
|
if(!raCloseCodec || !raDecode || !raFlush || !raFreeDecoder ||
|
|
!raGetFlavorProperty || !raOpenCodec2 || !raSetFlavor ||
|
|
/*!raSetDLLAccessPath ||*/ !raInitDecoder){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll\n");
|
|
return 0;
|
|
}
|
|
|
|
result=raOpenCodec2(&sh->context);
|
|
if(result){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder open failed, error code: 0x%X\n",result);
|
|
return 0;
|
|
}
|
|
|
|
sh->samplerate=sh->wf->nSamplesPerSec;
|
|
sh->samplesize=sh->wf->wBitsPerSample/8;
|
|
sh->channels=sh->wf->nChannels;
|
|
|
|
{
|
|
ra_init_t init_data={
|
|
sh->wf->nSamplesPerSec,sh->wf->wBitsPerSample,sh->wf->nChannels,
|
|
100, // ???
|
|
((short*)(sh->wf+1))[0], // subpacket size
|
|
sh->wf->nBlockAlign,
|
|
16, // ??
|
|
((char*)(sh->wf+1))+6+8
|
|
};
|
|
result=raInitDecoder(sh->context,&init_data);
|
|
if(result){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder init failed, error code: 0x%X\n",result);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if(raSetPwd){
|
|
// used by 'SIPR'
|
|
raSetPwd(sh->context,"Ardubancel Quazanga"); // set password... lol.
|
|
}
|
|
|
|
result=raSetFlavor(sh->context,((short*)(sh->wf+1))[2]);
|
|
if(result){
|
|
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder flavor setup failed, error code: 0x%X\n",result);
|
|
return 0;
|
|
}
|
|
|
|
prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],0,&len);
|
|
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Audio codec: [%d] %s\n",((short*)(sh->wf+1))[2],prop);
|
|
|
|
prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],1,&len);
|
|
sh->i_bps=((*((int*)prop))+4)/8;
|
|
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Audio bitrate: %5.3f kbit/s (%d bps) \n",(*((int*)prop))*0.001f,sh->i_bps);
|
|
|
|
// prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],0x13,&len);
|
|
// mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Samples/block?: %d \n",(*((int*)prop)));
|
|
|
|
sh->audio_out_minsize=128000; // no idea how to get... :(
|
|
sh->audio_in_minsize=((short*)(sh->wf+1))[1]*sh->wf->nBlockAlign;
|
|
|
|
return 1; // return values: 1=OK 0=ERROR
|
|
}
|
|
|
|
static int init(sh_audio_t *sh_audio){
|
|
// initialize the decoder, set tables etc...
|
|
|
|
// you can store HANDLE or private struct pointer at sh->context
|
|
// you can access WAVEFORMATEX header at sh->wf
|
|
|
|
// set sample format/rate parameters if you didn't do it in preinit() yet.
|
|
|
|
return 1; // return values: 1=OK 0=ERROR
|
|
}
|
|
|
|
static void uninit(sh_audio_t *sh){
|
|
// uninit the decoder etc...
|
|
// again: you don't have to free() a_in_buffer here! it's done by the core.
|
|
}
|
|
|
|
static unsigned char sipr_swaps[38][2]={
|
|
{0,63},{1,22},{2,44},{3,90},{5,81},{7,31},{8,86},{9,58},{10,36},{12,68},
|
|
{13,39},{14,73},{15,53},{16,69},{17,57},{19,88},{20,34},{21,71},{24,46},
|
|
{25,94},{26,54},{28,75},{29,50},{32,70},{33,92},{35,74},{38,85},{40,56},
|
|
{42,87},{43,65},{45,59},{48,79},{49,93},{51,89},{55,95},{61,76},{67,83},
|
|
{77,80} };
|
|
|
|
static int decode_audio(sh_audio_t *sh,unsigned char *buf,int minlen,int maxlen){
|
|
int result;
|
|
int len=-1;
|
|
int sps=((short*)(sh->wf+1))[0];
|
|
int w=sh->wf->nBlockAlign; // 5
|
|
int h=((short*)(sh->wf+1))[1];
|
|
|
|
// printf("bs=%d sps=%d w=%d h=%d \n",sh->wf->nBlockAlign,sps,w,h);
|
|
|
|
#if 1
|
|
if(sh->a_in_buffer_len<=0){
|
|
// fill the buffer!
|
|
if(!sps){
|
|
// 'sipr' way
|
|
int j,n;
|
|
int bs=h*w*2/96; // nibbles per subpacket
|
|
unsigned char *p=sh->a_in_buffer;
|
|
demux_read_data(sh->ds, p, h*w);
|
|
for(n=0;n<38;n++){
|
|
int i=bs*sipr_swaps[n][0];
|
|
int o=bs*sipr_swaps[n][1];
|
|
// swap nibbles of block 'i' with 'o' TODO: optimize
|
|
for(j=0;j<bs;j++){
|
|
int x=(i&1) ? (p[(i>>1)]>>4) : (p[(i>>1)]&15);
|
|
int y=(o&1) ? (p[(o>>1)]>>4) : (p[(o>>1)]&15);
|
|
if(o&1) p[(o>>1)]=(p[(o>>1)]&0x0F)|(x<<4);
|
|
else p[(o>>1)]=(p[(o>>1)]&0xF0)|x;
|
|
if(i&1) p[(i>>1)]=(p[(i>>1)]&0x0F)|(y<<4);
|
|
else p[(i>>1)]=(p[(i>>1)]&0xF0)|y;
|
|
++i;++o;
|
|
}
|
|
}
|
|
sh->a_in_buffer_size=
|
|
sh->a_in_buffer_len=w*h;
|
|
} else {
|
|
// 'cook' way
|
|
int x,y;
|
|
w/=sps;
|
|
for(y=0;y<h;y++)
|
|
for(x=0;x<w;x++){
|
|
demux_read_data(sh->ds, sh->a_in_buffer+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
|
|
}
|
|
sh->a_in_buffer_size=
|
|
sh->a_in_buffer_len=w*h*sps;
|
|
}
|
|
}
|
|
|
|
#else
|
|
if(sh->a_in_buffer_len<=0){
|
|
// fill the buffer!
|
|
demux_read_data(sh->ds, sh->a_in_buffer, sh->wf->nBlockAlign);
|
|
sh->a_in_buffer_size=
|
|
sh->a_in_buffer_len=sh->wf->nBlockAlign;
|
|
}
|
|
#endif
|
|
|
|
result=raDecode(sh->context, sh->a_in_buffer+sh->a_in_buffer_size-sh->a_in_buffer_len, sh->wf->nBlockAlign,
|
|
buf, &len, -1);
|
|
sh->a_in_buffer_len-=sh->wf->nBlockAlign;
|
|
|
|
// printf("radecode: %d bytes, res=0x%X \n",len,result);
|
|
|
|
return len; // return value: number of _bytes_ written to output buffer,
|
|
// or -1 for EOF (or uncorrectable error)
|
|
}
|
|
|
|
static int control(sh_audio_t *sh,int cmd,void* arg, ...){
|
|
// various optional functions you MAY implement:
|
|
switch(cmd){
|
|
case ADCTRL_RESYNC_STREAM:
|
|
// it is called once after seeking, to resync.
|
|
// Note: sh_audio->a_in_buffer_len=0; is done _before_ this call!
|
|
return CONTROL_TRUE;
|
|
case ADCTRL_SKIP_FRAME:
|
|
// it is called to skip (jump over) small amount (1/10 sec or 1 frame)
|
|
// of audio data - used to sync audio to video after seeking
|
|
// if you don't return CONTROL_TRUE, it will defaults to:
|
|
// ds_fill_buffer(sh_audio->ds); // skip 1 demux packet
|
|
return CONTROL_TRUE;
|
|
}
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
#endif
|