aacenc: Fix bug in writing libavcodec_ident.

[ffmpeg] / libavcodec / lagarith.c

diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c
index 757873ead3a27136b70237ffe966dd5b9bc7e4da..43027cff4e448c3d4e7930cf9f306e4e3cffe5a3 100644 (file)
--- a/libavcodec/lagarith.c
+++ b/libavcodec/lagarith.c
@@ -2,20 +2,20 @@
  * Lagarith lossless decoder
  * Copyright (c) 2009 Nathan Caldwell <saintdev (at) gmail.com>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -447,7 +447,7 @@ static int lag_decode_frame(AVCodecContext *avctx,
     uint32_t offset_gu = 0, offset_bv = 0, offset_ry = 9;
     int offs[4];
     uint8_t *srcs[4], *dst;
-    int i, j, planes = 3;
+    int i, j;
 
     AVFrame *picture = data;
 
@@ -480,39 +480,33 @@ static int lag_decode_frame(AVCodecContext *avctx,
         break;
     case FRAME_ARITH_RGBA:
         avctx->pix_fmt = PIX_FMT_RGB32;
-        planes = 4;
-        offset_ry += 4;
-        offs[3] = AV_RL32(buf + 9);
-    case FRAME_ARITH_RGB24:
-        if (frametype == FRAME_ARITH_RGB24)
-            avctx->pix_fmt = PIX_FMT_RGB24;
 
         if (avctx->get_buffer(avctx, p) < 0) {
             av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
             return -1;
         }
-
         offs[0] = offset_bv;
         offs[1] = offset_gu;
-        offs[2] = offset_ry;
+        offs[2] = 13;
+        offs[3] = AV_RL32(buf + 9);
 
         if (!l->rgb_planes) {
             l->rgb_stride = FFALIGN(avctx->width, 16);
-            l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * planes);
+            l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * 4);
             if (!l->rgb_planes) {
                 av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n");
                 return AVERROR(ENOMEM);
             }
         }
-        for (i = 0; i < planes; i++)
+        for (i = 0; i < 4; i++)
             srcs[i] = l->rgb_planes + (i + 1) * l->rgb_stride * avctx->height - l->rgb_stride;
-        for (i = 0; i < planes; i++)
+        for (i = 0; i < 4; i++)
             lag_decode_arith_plane(l, srcs[i],
                                    avctx->width, avctx->height,
                                    -l->rgb_stride, buf + offs[i],
                                    buf_size);
         dst = p->data[0];
-        for (i = 0; i < planes; i++)
+        for (i = 0; i < 4; i++)
             srcs[i] = l->rgb_planes + i * l->rgb_stride * avctx->height;
         for (j = 0; j < avctx->height; j++) {
             for (i = 0; i < avctx->width; i++) {
@@ -520,19 +514,57 @@ static int lag_decode_frame(AVCodecContext *avctx,
                 r = srcs[0][i];
                 g = srcs[1][i];
                 b = srcs[2][i];
+                a = srcs[3][i];
                 r += g;
                 b += g;
-                if (frametype == FRAME_ARITH_RGBA) {
-                    a = srcs[3][i];
-                    AV_WN32(dst + i * 4, MKBETAG(a, r, g, b));
-                } else {
-                    dst[i * 3 + 0] = r;
-                    dst[i * 3 + 1] = g;
-                    dst[i * 3 + 2] = b;
-                }
+                AV_WN32(dst + i * 4, MKBETAG(a, r, g, b));
+            }
+            dst += p->linesize[0];
+            for (i = 0; i < 4; i++)
+                srcs[i] += l->rgb_stride;
+        }
+        break;
+    case FRAME_ARITH_RGB24:
+        avctx->pix_fmt = PIX_FMT_RGB24;
+
+        if (avctx->get_buffer(avctx, p) < 0) {
+            av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+            return -1;
+        }
+        offs[0] = offset_bv;
+        offs[1] = offset_gu;
+        offs[2] = 9;
+
+        if (!l->rgb_planes) {
+            l->rgb_stride = FFALIGN(avctx->width, 16);
+            l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * 3);
+            if (!l->rgb_planes) {
+                av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n");
+                return AVERROR(ENOMEM);
+            }
+        }
+        for (i = 0; i < 3; i++)
+            srcs[i] = l->rgb_planes + (i + 1) * l->rgb_stride * avctx->height - l->rgb_stride;
+        for (i = 0; i < 3; i++)
+            lag_decode_arith_plane(l, srcs[i],
+                                   avctx->width, avctx->height,
+                                   -l->rgb_stride, buf + offs[i],
+                                   buf_size);
+        dst = p->data[0];
+        for (i = 0; i < 3; i++)
+            srcs[i] = l->rgb_planes + i * l->rgb_stride * avctx->height;
+        for (j = 0; j < avctx->height; j++) {
+            for (i = 0; i < avctx->width; i++) {
+                uint8_t r, g, b;
+                r = srcs[0][i];
+                g = srcs[1][i];
+                b = srcs[2][i];
+                dst[3*i+0] = r+g;
+                dst[3*i+1] = g;
+                dst[3*i+2] = b+g;
             }
             dst += p->linesize[0];
-            for (i = 0; i < planes; i++)
+            for (i = 0; i < 3; i++)
                 srcs[i] += l->rgb_stride;
         }
         break;