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, 62 insertions, 0 deletions

diff --git a/libmpcodecs/ad_msadpcm.c b/libmpcodecs/ad_msadpcm.c
new file mode 100644
index 0000000000..046307b30f
--- /dev/null
+++ b/libmpcodecs/ad_msadpcm.c
@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "ad_internal.h"
+
+static ad_info_t info = 
+{
+	"MS ADPCM audio decoder",
+	"msadpcm",
+	AFM_MSADPCM,
+	"Nick Kurshev",
+	"Mike Melanson",
+	""
+};
+
+LIBAD_EXTERN(msadpcm)
+
+#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 = sh_audio->wf->nBlockAlign *
+    (sh_audio->channels*sh_audio->samplerate) / MS_ADPCM_SAMPLES_PER_BLOCK;
+  return 1;
+}
+
+static int preinit(sh_audio_t *sh_audio)
+{
+  sh_audio->audio_out_minsize=sh_audio->wf->nBlockAlign * 8;
+  sh_audio->ds->ss_div = MS_ADPCM_SAMPLES_PER_BLOCK;
+  sh_audio->ds->ss_mul = sh_audio->wf->nBlockAlign;
+  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)
+{
+  static unsigned char *ibuf = NULL;	// FIXME!!! TODO!!! use sh->a_in_buffer!
+  if (!ibuf)
+   ibuf = (unsigned char *)malloc
+        (sh_audio->wf->nBlockAlign * sh_audio->wf->nChannels);
+  if (demux_read_data(sh_audio->ds, ibuf,
+      sh_audio->wf->nBlockAlign) != 
+      sh_audio->wf->nBlockAlign) 
+         return -1; /* EOF */
+  return 2 * ms_adpcm_decode_block(
+          (unsigned short*)buf,ibuf, sh_audio->wf->nChannels,
+          sh_audio->wf->nBlockAlign);
+}