1 files changed, 60 insertions, 0 deletions
diff --git a/libmpcodecs/ad_dk3adpcm.c b/libmpcodecs/ad_dk3adpcm.c
new file mode 100644
index 0000000000..a6de3d96e1
--- /dev/null
+++ b/libmpcodecs/ad_dk3adpcm.c
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "ad_internal.h"
+
+static ad_info_t info = 
+{
+	"Duck DK3 ADPCM decoder",
+	"dk3adpcm",
+	AFM_DK3ADPCM,
+	"Nick Kurshev",
+	"Mike Melanson",
+	"This format number was used by Duck Corp. but not officially registered with Microsoft"
+};
+
+LIBAD_EXTERN(dk3adpcm)
+
+#include "adpcm.h"
+
+static int init(sh_audio_t *sh_audio)
+{
+  sh_audio->channels=sh_audio->wf->nChannels;
+  sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
+  sh_audio->i_bps=DK3_ADPCM_BLOCK_SIZE*
+    (sh_audio->channels*sh_audio->samplerate) / DK3_ADPCM_SAMPLES_PER_BLOCK;
+  return 1;
+}
+
+static int preinit(sh_audio_t *sh_audio)
+{
+  sh_audio->audio_out_minsize=DK3_ADPCM_SAMPLES_PER_BLOCK * 4;
+  sh_audio->ds->ss_div=DK3_ADPCM_SAMPLES_PER_BLOCK;
+  sh_audio->ds->ss_mul=DK3_ADPCM_BLOCK_SIZE;
+  return 1;
+}
+
+static void uninit(sh_audio_t *sh)
+{
+}
+
+static int control(sh_audio_t *sh,int cmd,void* arg, ...)
+{
+    // TODO!
+  return CONTROL_UNKNOWN;
+}
+
+static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
+{
+  int len=-1;
+   unsigned char ibuf[DK3_ADPCM_BLOCK_SIZE * 2]; /* bytes / stereo frame */
+    if (demux_read_data(sh_audio->ds, ibuf,
+          DK3_ADPCM_BLOCK_SIZE * sh_audio->wf->nChannels) != 
+          DK3_ADPCM_BLOCK_SIZE * sh_audio->wf->nChannels) 
+      return len; /* EOF */
+    len = 2 * dk3_adpcm_decode_block(
+          (unsigned short*)buf,ibuf);
+    return len;
+}