imported from MPlayerXP, dlopen() hack removed, some bugs fixed, interface functions changed to static, info->author field added

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5341 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 99 insertions, 0 deletions

diff --git a/libmpcodecs/ad_dshow.c b/libmpcodecs/ad_dshow.c
new file mode 100644
index 0000000000..369368e7e2
--- /dev/null
+++ b/libmpcodecs/ad_dshow.c
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "ad_internal.h"
+
+static ad_info_t info = 
+{
+	"Win32/DirectShow decoders",
+	"dshow",
+	AFM_DSHOW,
+	"Nick Kurshev",
+	"avifile.sf.net",
+	""
+};
+
+LIBAD_EXTERN(dshow)
+
+#include "dshow/DS_AudioDecoder.h"
+
+static DS_AudioDecoder* ds_adec=NULL;
+
+static int init(sh_audio_t *sh)
+{
+  return 1;
+}
+
+static int preinit(sh_audio_t *sh_audio)
+{
+  if(!(ds_adec=DS_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf)))
+  {
+    mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,sh_audio->codec->dll);
+    return 0;
+  } else {
+    sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
+    sh_audio->channels=sh_audio->wf->nChannels;
+    sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
+    sh_audio->audio_in_minsize=2*sh_audio->wf->nBlockAlign;
+    if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
+    sh_audio->a_in_buffer_size=sh_audio->audio_in_minsize;
+    sh_audio->a_in_buffer=malloc(sh_audio->a_in_buffer_size);
+    sh_audio->a_in_buffer_len=0;
+    sh_audio->audio_out_minsize=16384;
+  }
+  mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DShow audio codec init OK!\n");
+  return 1;
+}
+
+static void uninit(sh_audio_t *sh)
+{
+    // TODO!!!
+}
+
+static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
+{
+  int skip;
+    switch(cmd)
+    {
+      case ADCTRL_SKIP_FRAME:
+		    skip=sh_audio->wf->nBlockAlign;
+		    if(skip<16){
+		      skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
+		      if(skip<16) skip=16;
+		    }
+		    demux_read_data(sh_audio->ds,NULL,skip);
+	  return CONTROL_TRUE;
+    }
+  return CONTROL_UNKNOWN;
+}
+
+static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
+{
+//	int len=-1;
+        int size_in=0;
+        int size_out=0;
+        int srcsize=DS_AudioDecoder_GetSrcSize(ds_adec, maxlen);
+        mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DShow says: srcsize=%d  (buffsize=%d)  out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
+        if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
+        if(sh_audio->a_in_buffer_len<srcsize){
+          sh_audio->a_in_buffer_len+=
+            demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
+            srcsize-sh_audio->a_in_buffer_len);
+        }
+        DS_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
+            buf,maxlen, &size_in,&size_out);
+        mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DShow: audio %d -> %d converted  (in_buf_len=%d of %d)  %d\n",size_in,size_out,sh_audio->a_in_buffer_len,sh_audio->a_in_buffer_size,ds_tell_pts(sh_audio->ds));
+        if(size_in>=sh_audio->a_in_buffer_len){
+          sh_audio->a_in_buffer_len=0;
+        } else {
+          sh_audio->a_in_buffer_len-=size_in;
+          memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
+        }
+//        len=size_out;
+  return size_out;
+}