mirror of https://github.com/mpv-player/mpv
193 lines
6.1 KiB
C
193 lines
6.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "config.h"
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#ifdef USE_REALCODECS
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#include <stddef.h>
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#include <dlfcn.h>
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#include "ad_internal.h"
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static ad_info_t info = {
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"RealAudio decoder", // name of the driver
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"real", // driver name. should be the same as filename without ad_
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AFM_REAL, // replace with registered AFM number
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"A'rpi", // writer/maintainer of _this_ file
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"", // writer/maintainer/site of the _codec_
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"" // comments
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};
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LIBAD_EXTERN(real)
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static void *handle=NULL;
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void *__builtin_new(unsigned long size) {
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return malloc(size);
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}
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static ulong (*raCloseCodec)(ulong);
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static ulong (*raDecode)(ulong,ulong,ulong,ulong,ulong,ulong);
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static ulong (*raFlush)(ulong,ulong,ulong);
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static ulong (*raFreeDecoder)(ulong);
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static ulong (*raGetFlavorProperty)(ulong,ulong,ulong,ulong);
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//static ulong (*raGetNumberOfFlavors2)(void);
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static ulong (*raInitDecoder)(ulong,ulong);
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static ulong (*raOpenCodec2)(ulong);
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static ulong (*raSetFlavor)(ulong,ulong);
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static void (*raSetDLLAccessPath)(ulong);
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typedef struct {
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int samplerate;
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short bits;
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short channels;
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int unk1;
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int unk2;
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int packetsize;
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int unk3;
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void* unk4;
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} ra_init_t;
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static int preinit(sh_audio_t *sh){
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// let's check if the driver is available, return 0 if not.
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// (you should do that if you use external lib(s) which is optional)
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unsigned int result;
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handle = dlopen ("/usr/local/RealPlayer8/Codecs/cook.so.6.0", RTLD_LAZY);
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if(!handle){
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mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot open dll: %s\n",dlerror());
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return 0;
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}
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raCloseCodec = dlsym(handle, "RACloseCodec");
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raDecode = dlsym(handle, "RADecode");
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raFlush = dlsym(handle, "RAFlush");
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raFreeDecoder = dlsym(handle, "RAFreeDecoder");
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raGetFlavorProperty = dlsym(handle, "RAGetFlavorProperty");
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raOpenCodec2 = dlsym(handle, "RAOpenCodec2");
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raInitDecoder = dlsym(handle, "RAInitDecoder");
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raSetFlavor = dlsym(handle, "RASetFlavor");
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raSetDLLAccessPath = dlsym(handle, "SetDLLAccessPath");
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if(!raCloseCodec || !raDecode || !raFlush || !raFreeDecoder ||
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!raGetFlavorProperty || !raOpenCodec2 || !raSetFlavor ||
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!raSetDLLAccessPath || !raInitDecoder){
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mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll\n");
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return 0;
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}
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result=raOpenCodec2(&sh->context);
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if(result){
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mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder open failed, error code: 0x%X\n",result);
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return 0;
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}
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sh->samplerate=sh->wf->nSamplesPerSec;
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sh->samplesize=sh->wf->wBitsPerSample/8;
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sh->channels=sh->wf->nChannels;
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{ unsigned char temp2[16]={1,0,0,3,4,0,0,0x14,0,0,0,0,0,1,0,3};
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// note: temp2[] come from audio stream extra header (last 16 of the total 24 bytes)
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ra_init_t init_data={
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sh->wf->nSamplesPerSec,sh->wf->wBitsPerSample,sh->wf->nChannels,
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100, 60, // ?????
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sh->wf->nBlockAlign,
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16, // ??
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((char*)(sh->wf+1))+2+8
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};
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result=raInitDecoder(sh->context,&init_data);
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if(result){
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mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder init failed, error code: 0x%X\n",result);
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return 0;
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}
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}
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result=raSetFlavor(sh->context,*((short*)(sh->wf+1)));
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if(result){
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mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder flavor setup failed, error code: 0x%X\n",result);
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return 0;
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}
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sh->audio_out_minsize=128000; //sh->samplerate*sh->samplesize*sh->channels;
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sh->audio_in_minsize=2*sh->wf->nBlockAlign;
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// sh->samplesize=2;
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// sh->channels=2;
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// sh->samplerate=44100;
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// sh->sample_format=AFMT_S16_LE;
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sh->i_bps=64000/8;
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return 1; // return values: 1=OK 0=ERROR
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}
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static int init(sh_audio_t *sh_audio){
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// initialize the decoder, set tables etc...
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// you can store HANDLE or private struct pointer at sh->context
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// you can access WAVEFORMATEX header at sh->wf
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// set sample format/rate parameters if you didn't do it in preinit() yet.
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return 1; // return values: 1=OK 0=ERROR
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}
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static void uninit(sh_audio_t *sh){
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// uninit the decoder etc...
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// again: you don't have to free() a_in_buffer here! it's done by the core.
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}
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static int decode_audio(sh_audio_t *sh,unsigned char *buf,int minlen,int maxlen){
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int result;
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int len=-1;
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demux_read_data(sh->ds, sh->a_in_buffer, 60);
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result=raDecode(sh->context, sh->a_in_buffer, sh->wf->nBlockAlign,
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buf, &len, -1);
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printf("radecode: %d bytes, res=0x%X \n",len,result);
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// audio decoding. the most important thing :)
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// parameters you get:
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// buf = pointer to the output buffer, you have to store uncompressed
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// samples there
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// minlen = requested minimum size (in bytes!) of output. it's just a
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// _recommendation_, you can decode more or less, it just tell you that
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// the caller process needs 'minlen' bytes. if it gets less, it will
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// call decode_audio() again.
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// maxlen = maximum size (bytes) of output. you MUST NOT write more to the
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// buffer, it's the upper-most limit!
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// note: maxlen will be always greater or equal to sh->audio_out_minsize
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// now, let's decode...
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// you can read the compressed stream using the demux stream functions:
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// demux_read_data(sh->ds, buffer, length) - read 'length' bytes to 'buffer'
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// ds_get_packet(sh->ds, &buffer) - set ptr buffer to next data packet
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// (both func return number of bytes or 0 for error)
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return len/8; // return value: number of _bytes_ written to output buffer,
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// or -1 for EOF (or uncorrectable error)
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}
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static int control(sh_audio_t *sh,int cmd,void* arg, ...){
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// various optional functions you MAY implement:
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switch(cmd){
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case ADCTRL_RESYNC_STREAM:
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// it is called once after seeking, to resync.
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// Note: sh_audio->a_in_buffer_len=0; is done _before_ this call!
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return CONTROL_TRUE;
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case ADCTRL_SKIP_FRAME:
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// it is called to skip (jump over) small amount (1/10 sec or 1 frame)
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// of audio data - used to sync audio to video after seeking
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// if you don't return CONTROL_TRUE, it will defaults to:
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// ds_fill_buffer(sh_audio->ds); // skip 1 demux packet
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return CONTROL_TRUE;
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}
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return CONTROL_UNKNOWN;
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}
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#endif
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