cook: use AVCodecContext.channels instead of keeping a private copy

[ffmpeg] / libavcodec / xl.c

diff --git a/libavcodec/xl.c b/libavcodec/xl.c
index b607df2cb0ed6e5cf85e97f0fcfb189932795092..b63315850c910e2db4045e0bb427dfdfa8a8e232 100644 (file)
--- a/libavcodec/xl.c
+++ b/libavcodec/xl.c
@@ -2,28 +2,30 @@
  * Miro VideoXL codec
  * Copyright (c) 2004 Konstantin Shishkov
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
- * @file xl.c
+ * @file
  * Miro VideoXL codec.
  */
 
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
 #include "avcodec.h"
 
 typedef struct VideoXLContext{
@@ -39,15 +41,17 @@ static const int xl_table[32] = {
 
 static int decode_frame(AVCodecContext *avctx,
                         void *data, int *data_size,
-                        const uint8_t *buf, int buf_size)
+                        AVPacket *avpkt)
 {
+    const uint8_t *buf = avpkt->data;
+    int buf_size = avpkt->size;
     VideoXLContext * const a = avctx->priv_data;
-    AVFrame * const p= (AVFrame*)&a->pic;
+    AVFrame * const p = &a->pic;
     uint8_t *Y, *U, *V;
     int i, j;
     int stride;
     uint32_t val;
-    int y0, y1, y2, y3, c0, c1;
+    int y0, y1, y2, y3 = 0, c0 = 0, c1 = 0;
 
     if(p->data[0])
         avctx->release_buffer(avctx, p);
@@ -57,7 +61,7 @@ static int decode_frame(AVCodecContext *avctx,
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
-    p->pict_type= FF_I_TYPE;
+    p->pict_type= AV_PICTURE_TYPE_I;
     p->key_frame= 1;
 
     Y = a->pic.data[0];
@@ -65,6 +69,12 @@ static int decode_frame(AVCodecContext *avctx,
     V = a->pic.data[2];
 
     stride = avctx->width - 4;
+
+    if (buf_size < avctx->width * avctx->height) {
+        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     for (i = 0; i < avctx->height; i++) {
         /* lines are stored in reversed order */
         buf += stride;
@@ -120,19 +130,29 @@ static int decode_frame(AVCodecContext *avctx,
 static av_cold int decode_init(AVCodecContext *avctx){
 //    VideoXLContext * const a = avctx->priv_data;
 
-    avctx->pix_fmt= PIX_FMT_YUV411P;
+    avctx->pix_fmt= AV_PIX_FMT_YUV411P;
+
+    return 0;
+}
+
+static av_cold int decode_end(AVCodecContext *avctx){
+    VideoXLContext * const a = avctx->priv_data;
+    AVFrame *pic = &a->pic;
+
+    if (pic->data[0])
+        avctx->release_buffer(avctx, pic);
 
     return 0;
 }
 
-AVCodec xl_decoder = {
-    "xl",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_VIXL,
-    sizeof(VideoXLContext),
-    decode_init,
-    NULL,
-    NULL,
-    decode_frame,
-    CODEC_CAP_DR1,
+AVCodec ff_xl_decoder = {
+    .name           = "xl",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_VIXL,
+    .priv_data_size = sizeof(VideoXLContext),
+    .init           = decode_init,
+    .close          = decode_end,
+    .decode         = decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("Miro VideoXL"),
 };