adpcm: reindent after previous commit

[ffmpeg] / libavcodec / adpcm.c

diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 2dc3e6b50dc0308b6c8f2af7eeef973a0fa6d555..98b65dd14d41cea0461df134223896d89be97e74 100644 (file)
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -473,7 +473,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
         case AV_CODEC_ID_ADPCM_4XM:
         case AV_CODEC_ID_ADPCM_IMA_ISS:     header_size = 4 * ch;      break;
         case AV_CODEC_ID_ADPCM_IMA_AMV:     header_size = 8;           break;
-        case AV_CODEC_ID_ADPCM_IMA_SMJPEG:  header_size = 4;           break;
+        case AV_CODEC_ID_ADPCM_IMA_SMJPEG:  header_size = 4 * ch;      break;
     }
     if (header_size > 0)
         return (buf_size - header_size) * 2 / ch;
@@ -1136,16 +1136,9 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
         }
         break;
     case AV_CODEC_ID_ADPCM_IMA_AMV:
-    case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
-        if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
-            c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
-            c->status[0].step_index = bytestream2_get_le16u(&gb);
-            bytestream2_skipu(&gb, 4);
-        } else {
-            c->status[0].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
-            c->status[0].step_index = bytestream2_get_byteu(&gb);
-            bytestream2_skipu(&gb, 1);
-        }
+        c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
+        c->status[0].step_index = bytestream2_get_le16u(&gb);
+        bytestream2_skipu(&gb, 4);
         if (c->status[0].step_index > 88u) {
             av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
                    c->status[0].step_index);
@@ -1153,18 +1146,29 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
         }
 
         for (n = nb_samples >> (1 - st); n > 0; n--) {
-            int hi, lo, v = bytestream2_get_byteu(&gb);
+            int v = bytestream2_get_byteu(&gb);
 
-            if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
-                hi = v & 0x0F;
-                lo = v >> 4;
-            } else {
-                lo = v & 0x0F;
-                hi = v >> 4;
+            *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4, 3);
+            *samples++ = adpcm_ima_expand_nibble(&c->status[0], v & 0xf, 3);
+        }
+        break;
+    case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
+        for (i = 0; i < avctx->channels; i++) {
+            c->status[i].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
+            c->status[i].step_index = bytestream2_get_byteu(&gb);
+            bytestream2_skipu(&gb, 1);
+            if (c->status[i].step_index > 88u) {
+                av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
+                       c->status[i].step_index);
+                return AVERROR_INVALIDDATA;
             }
+        }
+
+        for (n = nb_samples >> (1 - st); n > 0; n--) {
+            int v = bytestream2_get_byteu(&gb);
 
-            *samples++ = adpcm_ima_expand_nibble(&c->status[0], lo, 3);
-            *samples++ = adpcm_ima_expand_nibble(&c->status[0], hi, 3);
+            *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0 ], v >> 4, 3);
+            *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0xf, 3);
         }
         break;
     case AV_CODEC_ID_ADPCM_CT: