libmpcodecs/ad_acm.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4
   5 #include "config.h"
   6 #include "mp_msg.h"
   7 #include "help_mp.h"
   8
   9 #include "loader/wineacm.h"
  10
  11 #include "ad_internal.h"
  12 #include "osdep/timer.h"
  13
  14 static const ad_info_t info =
  15 {
  16         "Win32/ACM decoders",
  17         "acm",
  18         "A'rpi",
  19         "A'rpi & Alex",
  20         ""
  21 };
  22
  23 LIBAD_EXTERN(acm)
  24
  25 typedef struct {
  26     WAVEFORMATEX *o_wf;
  27     HACMSTREAM handle;
  28 } acm_context_t;
  29
  30 static int init(sh_audio_t *sh_audio)
  31 {
  32     int ret=decode_audio(sh_audio,sh_audio->a_buffer,4096,sh_audio->a_buffer_size);
  33     if(ret<0){
  34         mp_msg(MSGT_DECAUDIO,MSGL_INFO,"ACM decoding error: %d\n",ret);
  35         return 0;
  36     }
  37     sh_audio->a_buffer_len=ret;
  38   return 1;
  39 }
  40
  41 void print_wave_header(WAVEFORMATEX *h, int verbose_level);
  42
  43 static int preinit(sh_audio_t *sh_audio)
  44 {
  45     HRESULT ret;
  46     WAVEFORMATEX *in_fmt = sh_audio->wf;
  47     DWORD srcsize = 0;
  48     acm_context_t *priv;
  49
  50     priv = malloc(sizeof(acm_context_t));
  51     if (!priv)
  52         return 0;
  53     sh_audio->context = priv;
  54
  55     mp_msg(MSGT_WIN32, MSGL_V, "======= Win32 (ACM) AUDIO Codec init =======\n");
  56
  57 //    priv->handle = NULL;
  58
  59     priv->o_wf = malloc(sizeof(WAVEFORMATEX));
  60     if (!priv->o_wf)
  61     {
  62         mp_tmsg(MSGT_DECAUDIO,MSGL_ERR,"Could not load/initialize Win32/ACM audio codec (missing DLL file?).\n");
  63         return 0;
  64     }
  65
  66     priv->o_wf->nChannels = in_fmt->nChannels;
  67     priv->o_wf->nSamplesPerSec = in_fmt->nSamplesPerSec;
  68     priv->o_wf->nAvgBytesPerSec = 2*in_fmt->nSamplesPerSec*in_fmt->nChannels;
  69     priv->o_wf->wFormatTag = WAVE_FORMAT_PCM;
  70     priv->o_wf->nBlockAlign = 2*in_fmt->nChannels;
  71     priv->o_wf->wBitsPerSample = 16;
  72 //    priv->o_wf->wBitsPerSample = inf_fmt->wBitsPerSample;
  73     priv->o_wf->cbSize = 0;
  74
  75     if ( mp_msg_test(MSGT_DECAUDIO,MSGL_V) )
  76     {
  77         mp_msg(MSGT_DECAUDIO, MSGL_V, "Input format:\n");
  78         print_wave_header(in_fmt, MSGL_V);
  79         mp_msg(MSGT_DECAUDIO, MSGL_V, "Output format:\n");
  80         print_wave_header(priv->o_wf, MSGL_V);
  81     }
  82
  83     MSACM_RegisterDriver((const char *)sh_audio->codec->dll, in_fmt->wFormatTag, 0);
  84     ret = acmStreamOpen(&priv->handle, (HACMDRIVER)NULL, in_fmt,
  85                         priv->o_wf, NULL, 0, 0, 0);
  86     if (ret)
  87     {
  88         if (ret == ACMERR_NOTPOSSIBLE)
  89             mp_msg(MSGT_WIN32, MSGL_ERR, "ACM_Decoder: Unappropriate audio format\n");
  90         else
  91             mp_msg(MSGT_WIN32, MSGL_ERR, "ACM_Decoder: acmStreamOpen error: %d\n",
  92                 (int)ret);
  93         mp_tmsg(MSGT_DECAUDIO,MSGL_ERR,"Could not load/initialize Win32/ACM audio codec (missing DLL file?).\n");
  94         return 0;
  95     }
  96     mp_msg(MSGT_WIN32, MSGL_V, "Audio codec opened OK! ;-)\n");
  97
  98     acmStreamSize(priv->handle, in_fmt->nBlockAlign, &srcsize, ACM_STREAMSIZEF_SOURCE);
  99     //if ( mp_msg_test(MSGT_DECAUDIO,MSGL_V) ) printf("Audio ACM output buffer min. size: %ld (reported by codec)\n", srcsize);
 100     srcsize *= 2;
 101     //if (srcsize < MAX_OUTBURST) srcsize = MAX_OUTBURST;
 102     if (!srcsize)
 103     {
 104         mp_msg(MSGT_WIN32, MSGL_WARN, "Warning! ACM codec reports srcsize=0\n");
 105         srcsize = 16384;
 106     }
 107     // limit srcsize to 4-16kb
 108     //while(srcsize && srcsize<4096) srcsize*=2;
 109     //while(srcsize>16384) srcsize/=2;
 110     sh_audio->audio_out_minsize=srcsize; // audio output min. size
 111     mp_msg(MSGT_WIN32,MSGL_V,"Audio ACM output buffer min. size: %ld\n",srcsize);
 112
 113     acmStreamSize(priv->handle, srcsize, &srcsize, ACM_STREAMSIZEF_DESTINATION);
 114 //    if(srcsize<in_fmt->nBlockAlign) srcsize=in_fmt->nBlockAlign;
 115
 116     if (!srcsize)
 117     {
 118         mp_msg(MSGT_WIN32, MSGL_WARN, "Warning! ACM codec reports srcsize=0\n");
 119         srcsize = 2*in_fmt->nBlockAlign;
 120     }
 121
 122     mp_msg(MSGT_WIN32,MSGL_V,"Audio ACM input buffer min. size: %ld\n",srcsize);
 123
 124     sh_audio->audio_in_minsize=2*srcsize; // audio input min. size
 125
 126     sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
 127     sh_audio->channels=priv->o_wf->nChannels;
 128     sh_audio->samplerate=priv->o_wf->nSamplesPerSec;
 129     sh_audio->samplesize=2;
 130
 131     mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/ACM audio codec init OK!\n");
 132     return 1;
 133 }
 134
 135 static void uninit(sh_audio_t *sh)
 136 {
 137     HRESULT ret;
 138     acm_context_t *priv = sh->context;
 139
 140 retry:
 141     ret = acmStreamClose(priv->handle, 0);
 142
 143     if (ret)
 144     switch(ret)
 145     {
 146         case ACMERR_BUSY:
 147         case ACMERR_CANCELED:
 148             mp_msg(MSGT_WIN32, MSGL_DBG2, "ACM_Decoder: stream busy, waiting..\n");
 149             usec_sleep(100000000);
 150             goto retry;
 151         case ACMERR_UNPREPARED:
 152         case ACMERR_NOTPOSSIBLE:
 153             return;
 154         default:
 155             mp_msg(MSGT_WIN32, MSGL_WARN, "ACM_Decoder: unknown error occurred: %ld\n", ret);
 156             return;
 157     }
 158
 159     MSACM_UnregisterAllDrivers();
 160
 161     free(priv->o_wf);
 162     free(priv);
 163 }
 164
 165 static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
 166 {
 167   int skip;
 168     switch(cmd)
 169     {
 170       case ADCTRL_SKIP_FRAME:
 171                     skip=sh_audio->wf->nBlockAlign;
 172                     if(skip<16){
 173                       skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
 174                       if(skip<16) skip=16;
 175                     }
 176                     demux_read_data(sh_audio->ds,NULL,skip);
 177           return CONTROL_TRUE;
 178     }
 179   return CONTROL_UNKNOWN;
 180 }
 181
 182 static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
 183 {
 184     ACMSTREAMHEADER ash;
 185     HRESULT hr;
 186     DWORD srcsize=0;
 187     DWORD len=minlen;
 188     acm_context_t *priv = sh_audio->context;
 189
 190     acmStreamSize(priv->handle, len, &srcsize, ACM_STREAMSIZEF_DESTINATION);
 191     mp_msg(MSGT_WIN32,MSGL_DBG3,"acm says: srcsize=%ld  (buffsize=%d)  out_size=%ld\n",srcsize,sh_audio->a_in_buffer_size,len);
 192
 193     if(srcsize<sh_audio->wf->nBlockAlign){
 194        srcsize=sh_audio->wf->nBlockAlign;
 195        acmStreamSize(priv->handle, srcsize, &len, ACM_STREAMSIZEF_SOURCE);
 196        if(len>maxlen) len=maxlen;
 197     }
 198
 199 //    if(srcsize==0) srcsize=((WAVEFORMATEX *)&sh_audio->o_wf_ext)->nBlockAlign;
 200     if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
 201     if(sh_audio->a_in_buffer_len<srcsize){
 202       sh_audio->a_in_buffer_len+=
 203         demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
 204         srcsize-sh_audio->a_in_buffer_len);
 205     }
 206     mp_msg(MSGT_WIN32,MSGL_DBG3,"acm convert %d -> %ld bytes\n",sh_audio->a_in_buffer_len,len);
 207     memset(&ash, 0, sizeof(ash));
 208     ash.cbStruct=sizeof(ash);
 209     ash.fdwStatus=0;
 210     ash.dwUser=0;
 211     ash.pbSrc=sh_audio->a_in_buffer;
 212     ash.cbSrcLength=sh_audio->a_in_buffer_len;
 213     ash.pbDst=buf;
 214     ash.cbDstLength=len;
 215     hr=acmStreamPrepareHeader(priv->handle,&ash,0);
 216     if(hr){
 217       mp_msg(MSGT_WIN32,MSGL_V,"ACM_Decoder: acmStreamPrepareHeader error %d\n",(int)hr);
 218       return -1;
 219     }
 220     hr=acmStreamConvert(priv->handle,&ash,0);
 221     if(hr){
 222       mp_msg(MSGT_WIN32,MSGL_DBG2,"ACM_Decoder: acmStreamConvert error %d\n",(int)hr);
 223       switch(hr)
 224       {
 225         case ACMERR_NOTPOSSIBLE:
 226         case ACMERR_UNPREPARED:
 227             mp_msg(MSGT_WIN32, MSGL_DBG2, "ACM_Decoder: acmStreamConvert error: probarly not initialized!\n");
 228       }
 229 //      return -1;
 230     }
 231     mp_msg(MSGT_WIN32,MSGL_DBG2,"acm converted %ld -> %ld\n",ash.cbSrcLengthUsed,ash.cbDstLengthUsed);
 232     if(ash.cbSrcLengthUsed>=sh_audio->a_in_buffer_len){
 233       sh_audio->a_in_buffer_len=0;
 234     } else {
 235       sh_audio->a_in_buffer_len-=ash.cbSrcLengthUsed;
 236       memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[ash.cbSrcLengthUsed],sh_audio->a_in_buffer_len);
 237     }
 238     len=ash.cbDstLengthUsed;
 239     hr=acmStreamUnprepareHeader(priv->handle,&ash,0);
 240     if(hr){
 241       mp_msg(MSGT_WIN32,MSGL_V,"ACM_Decoder: acmStreamUnprepareHeader error %d\n",(int)hr);
 242     }
 243     return len;
 244 }