renamed to match driver family name

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7173 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 192 insertions, 0 deletions

diff --git a/libmpcodecs/ad_liba52.c b/libmpcodecs/ad_liba52.c
new file mode 100644
index 0000000000..cc85fe0004
--- /dev/null
+++ b/libmpcodecs/ad_liba52.c
@@ -0,0 +1,192 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "ad_internal.h"
+
+#include "cpudetect.h"
+
+#include "../liba52/a52.h"
+#include "../liba52/mm_accel.h"
+
+static sample_t * a52_samples;
+static a52_state_t a52_state;
+static uint32_t a52_flags=0;
+
+#include "bswap.h"
+
+static ad_info_t info = 
+{
+	"AC3-liba52",
+	"liba52",
+	AFM_A52,
+	"Nick Kurshev",
+	"Michel LESPINASSE",
+	""
+};
+
+LIBAD_EXTERN(liba52)
+
+extern int audio_output_channels;
+
+int a52_fillbuff(sh_audio_t *sh_audio){
+int length=0;
+int flags=0;
+int sample_rate=0;
+int bit_rate=0;
+
+    sh_audio->a_in_buffer_len=0;
+    /* sync frame:*/
+while(1){
+    while(sh_audio->a_in_buffer_len<7){
+	int c=demux_getc(sh_audio->ds);
+	if(c<0) return -1; /* EOF*/
+        sh_audio->a_in_buffer[sh_audio->a_in_buffer_len++]=c;
+    }
+    length = a52_syncinfo (sh_audio->a_in_buffer, &flags, &sample_rate, &bit_rate);
+    if(length>=7 && length<=3840) break; /* we're done.*/
+    /* bad file => resync*/
+    memcpy(sh_audio->a_in_buffer,sh_audio->a_in_buffer+1,6);
+    --sh_audio->a_in_buffer_len;
+}
+    mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"a52: len=%d  flags=0x%X  %d Hz %d bit/s\n",length,flags,sample_rate,bit_rate);
+    sh_audio->samplerate=sample_rate;
+    sh_audio->i_bps=bit_rate/8;
+    demux_read_data(sh_audio->ds,sh_audio->a_in_buffer+7,length-7);
+    
+    if(crc16_block(sh_audio->a_in_buffer+2,length-2)!=0)
+	mp_msg(MSGT_DECAUDIO,MSGL_STATUS,"a52: CRC check failed!  \n");
+    
+    return length;
+}
+
+/* returns: number of available channels*/
+static int a52_printinfo(sh_audio_t *sh_audio){
+int flags, sample_rate, bit_rate;
+char* mode="unknown";
+int channels=0;
+  a52_syncinfo (sh_audio->a_in_buffer, &flags, &sample_rate, &bit_rate);
+  switch(flags&A52_CHANNEL_MASK){
+    case A52_CHANNEL: mode="channel"; channels=2; break;
+    case A52_MONO: mode="mono"; channels=1; break;
+    case A52_STEREO: mode="stereo"; channels=2; break;
+    case A52_3F: mode="3f";channels=3;break;
+    case A52_2F1R: mode="2f+1r";channels=3;break;
+    case A52_3F1R: mode="3f+1r";channels=4;break;
+    case A52_2F2R: mode="2f+2r";channels=4;break;
+    case A52_3F2R: mode="3f+2r";channels=5;break;
+    case A52_CHANNEL1: mode="channel1"; channels=2; break;
+    case A52_CHANNEL2: mode="channel2"; channels=2; break;
+    case A52_DOLBY: mode="dolby"; channels=2; break;
+  }
+  mp_msg(MSGT_DECAUDIO,MSGL_INFO,"AC3: %d.%d (%s%s)  %d Hz  %3.1f kbit/s\n",
+	channels, (flags&A52_LFE)?1:0,
+	mode, (flags&A52_LFE)?"+lfe":"",
+	sample_rate, bit_rate*0.001f);
+  return (flags&A52_LFE) ? (channels+1) : channels;
+}
+
+
+static int preinit(sh_audio_t *sh)
+{
+  /* Dolby AC3 audio: */
+  /* however many channels, 2 bytes in a word, 256 samples in a block, 6 blocks in a frame */
+  sh->audio_out_minsize=audio_output_channels*2*256*6;
+  sh->audio_in_minsize=3840;
+  return 1;
+}
+
+static int init(sh_audio_t *sh_audio)
+{
+  uint32_t a52_accel=0;
+  sample_t level=1, bias=384;
+  int flags=0;
+  /* Dolby AC3 audio:*/
+  if(gCpuCaps.hasSSE) a52_accel|=MM_ACCEL_X86_SSE;
+  if(gCpuCaps.hasMMX) a52_accel|=MM_ACCEL_X86_MMX;
+  if(gCpuCaps.hasMMX2) a52_accel|=MM_ACCEL_X86_MMXEXT;
+  if(gCpuCaps.has3DNow) a52_accel|=MM_ACCEL_X86_3DNOW;
+  if(gCpuCaps.has3DNowExt) a52_accel|=MM_ACCEL_X86_3DNOWEXT;
+  a52_samples=a52_init (a52_accel);
+  if (a52_samples == NULL) {
+	mp_msg(MSGT_DECAUDIO,MSGL_ERR,"A52 init failed\n");
+	return 0;
+  }
+  if(a52_fillbuff(sh_audio)<0){
+	mp_msg(MSGT_DECAUDIO,MSGL_ERR,"A52 sync failed\n");
+	return 0;
+  }
+  /* 'a52 cannot upmix' hotfix:*/
+  a52_printinfo(sh_audio);
+  sh_audio->channels=audio_output_channels;
+while(sh_audio->channels>0){
+  switch(sh_audio->channels){
+	    case 1: a52_flags=A52_MONO; break;
+/*	    case 2: a52_flags=A52_STEREO; break;*/
+	    case 2: a52_flags=A52_DOLBY; break;
+/*	    case 3: a52_flags=A52_3F; break;*/
+	    case 3: a52_flags=A52_2F1R; break;
+	    case 4: a52_flags=A52_2F2R; break; /* 2+2*/
+	    case 5: a52_flags=A52_3F2R; break;
+	    case 6: a52_flags=A52_3F2R|A52_LFE; break; /* 5.1*/
+  }
+  /* test:*/
+  flags=a52_flags|A52_ADJUST_LEVEL;
+  mp_msg(MSGT_DECAUDIO,MSGL_V,"A52 flags before a52_frame: 0x%X\n",flags);
+  if (a52_frame (&a52_state, sh_audio->a_in_buffer, &flags, &level, bias)){
+    mp_msg(MSGT_DECAUDIO,MSGL_ERR,"a52: error decoding frame -> nosound\n");
+    return 0;
+  }
+  mp_msg(MSGT_DECAUDIO,MSGL_V,"A52 flags after a52_frame: 0x%X\n",flags);
+  /* frame decoded, let's init resampler:*/
+  if(a52_resample_init(a52_accel,flags,sh_audio->channels)) break;
+  --sh_audio->channels; /* try to decrease no. of channels*/
+}
+  if(sh_audio->channels<=0){
+    mp_msg(MSGT_DECAUDIO,MSGL_ERR,"a52: no resampler. try different channel setup!\n");
+    return 0;
+  }
+  return 1;
+}
+
+static void uninit(sh_audio_t *sh)
+{
+}
+
+static int control(sh_audio_t *sh,int cmd,void* arg, ...)
+{
+    switch(cmd)
+    {
+      case ADCTRL_SKIP_FRAME:
+	  a52_fillbuff(sh); break; // skip AC3 frame
+	  return CONTROL_TRUE;
+    }
+  return CONTROL_UNKNOWN;
+}
+
+static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
+{
+    sample_t level=1, bias=384;
+    int flags=a52_flags|A52_ADJUST_LEVEL;
+    int i,len=-1;
+	if(!sh_audio->a_in_buffer_len) 
+	    if(a52_fillbuff(sh_audio)<0) return len; /* EOF */
+	sh_audio->a_in_buffer_len=0;
+	if (a52_frame (&a52_state, sh_audio->a_in_buffer, &flags, &level, bias)){
+	    mp_msg(MSGT_DECAUDIO,MSGL_WARN,"a52: error decoding frame\n");
+	    return len;
+	}
+	len=0;
+	for (i = 0; i < 6; i++) {
+	    if (a52_block (&a52_state, a52_samples)){
+		mp_msg(MSGT_DECAUDIO,MSGL_WARN,"a52: error at resampling\n");
+		break;
+	    }
+	    len+=2*a52_resample(a52_samples,(int16_t *)&buf[len]);
+	}
+  return len;
+}