Wrote apps/codecs/wmapro.c and modified libwmapro to make the codec work in the sim. Neither libwmapro nor wmapro.c have been added to the main build yet, codecs.make should be edited to compile both with rockbox.

current status of the decoder :
- Plays and seeks in the sim
- Still in floating point

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27006 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 23 insertions, 10 deletions

diff --git a/apps/codecs/libwmapro/wmaprodec.c b/apps/codecs/libwmapro/wmaprodec.c
index 88d317d..e729194 100644
--- a/apps/codecs/libwmapro/wmaprodec.c
+++ b/apps/codecs/libwmapro/wmaprodec.c
@@ -93,13 +93,11 @@
 #include "wmaprodata.h"
 #include "dsputil.h"
 #include "wma.h"
+#include "wmaprodec.h"
 
 /* Some defines to make it compile */
 #define AVERROR_INVALIDDATA  -1
 #define AVERROR_PATCHWELCOME -2
-#ifndef M_PI
-#define M_PI           3.14159265358979323846  /* pi */
-#endif
 #define av_log_ask_for_sample(...)
 
 /** current decoder limitations */
@@ -238,8 +236,8 @@ typedef struct WMAProDecodeCtx {
  */
 static void av_cold dump_context(WMAProDecodeCtx *s)
 {
-#define PRINT(a, b)     av_log(s->avctx, AV_LOG_DEBUG, " %s = %d\n", a, b);
-#define PRINT_HEX(a, b) av_log(s->avctx, AV_LOG_DEBUG, " %s = %x\n", a, b);
+#define PRINT(a, b)     printf(" %s = %d\n", a, b);
+#define PRINT_HEX(a, b) printf(" %s = %x\n", a, b);
 
     PRINT("ed sample bit depth", s->bits_per_sample);
     PRINT_HEX("ed decode flags", s->decode_flags);
@@ -255,7 +253,7 @@ static void av_cold dump_context(WMAProDecodeCtx *s)
  *@param avctx codec context
  *@return 0 on success, < 0 otherwise
  */
-static av_cold int decode_end(AVCodecContext *avctx)
+av_cold int decode_end(AVCodecContext *avctx)
 {
     WMAProDecodeCtx *s = avctx->priv_data;
     int i;
@@ -271,8 +269,10 @@ static av_cold int decode_end(AVCodecContext *avctx)
  *@param avctx codec context
  *@return 0 on success, -1 otherwise
  */
-static av_cold int decode_init(AVCodecContext *avctx)
+av_cold int decode_init(AVCodecContext *avctx)
 {
+    avctx->priv_data = malloc(sizeof(WMAProDecodeCtx));
+    memset(avctx->priv_data, 0, sizeof(WMAProDecodeCtx));
     WMAProDecodeCtx *s = avctx->priv_data;
     uint8_t *edata_ptr = avctx->extradata;
     unsigned int channel_mask;
@@ -454,7 +454,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
         sin64[i] = sin(i*M_PI / 64.0);
 #if 0
     if (avctx->debug & FF_DEBUG_BITSTREAM)
-        dump_context(s);
 #endif
 
     avctx->channel_layout = channel_mask;
@@ -1379,7 +1378,7 @@ static int decode_frame(WMAProDecodeCtx *s)
     if (len != (get_bits_count(gb) - s->frame_offset) + 2) {
         /** FIXME: not sure if this is always an error */
         av_log(s->avctx, AV_LOG_ERROR, "frame[%i] would have to skip %i bits\n",
-               s->frame_num, len - (get_bits_count(gb) - s->frame_offset) - 1);
+               (int)s->frame_num, len - (get_bits_count(gb) - s->frame_offset) - 1);
         s->packet_loss = 1;
         return 0;
     }
@@ -1465,7 +1464,7 @@ static void save_bits(WMAProDecodeCtx *s, GetBitContext* gb, int len,
  *@param avpkt input packet
  *@return number of bytes that were read from the input buffer
  */
-static int decode_packet(AVCodecContext *avctx,
+int decode_packet(AVCodecContext *avctx,
                          void *data, int *data_size, AVPacket* avpkt)
 {
     WMAProDecodeCtx *s = avctx->priv_data;
@@ -1549,6 +1548,20 @@ static int decode_packet(AVCodecContext *avctx,
     *data_size = (int8_t *)s->samples - (int8_t *)data;
     s->packet_offset = get_bits_count(gb) & 7;
 
+/* Convert the pcm samples to signed 16-bit integers. This is the format that 
+ * the rockbox simulator works with. */
+#ifdef ROCKBOX    
+    float* fptr = data;
+    int32_t* ptr = data;
+    int x;
+    for(x = 0; x < *data_size; x++)
+    {
+        fptr[x] *= ((float)(INT32_MAX));
+        ptr[x] = (int32_t)fptr[x];
+        
+    }
+#endif
+
     return (s->packet_loss) ? AVERROR_INVALIDDATA : get_bits_count(gb) >> 3;
 }