avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / nuv.c

diff --git a/libavcodec/nuv.c b/libavcodec/nuv.c
index 75b14bce5b0a302491d6b826dd988d3525f8fb47..3ba12fd8e6514c5a05ac52f8c58d3a371a566b1f 100644 (file)
--- a/libavcodec/nuv.c
+++ b/libavcodec/nuv.c
@@ -126,15 +126,15 @@ static int codec_reinit(AVCodecContext *avctx, int width, int height,
         get_quant_quality(c, quality);
     if (width != c->width || height != c->height) {
         // also reserve space for a possible additional header
-        int buf_size = height * width * 3 / 2
+        int64_t buf_size = height * (int64_t)width * 3 / 2
                      + FFMAX(AV_LZO_OUTPUT_PADDING, AV_INPUT_BUFFER_PADDING_SIZE)
                      + RTJPEG_HEADER_SIZE;
         if (buf_size > INT_MAX/8)
             return -1;
-        if ((ret = av_image_check_size(height, width, 0, avctx)) < 0)
+        if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
             return ret;
-        avctx->width  = c->width  = width;
-        avctx->height = c->height = height;
+        c->width  = width;
+        c->height = height;
         av_fast_malloc(&c->decomp_buf, &c->decomp_size,
                        buf_size);
         if (!c->decomp_buf) {
@@ -162,6 +162,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     int keyframe, ret;
     int size_change = 0;
     int minsize = 0;
+    int flags = 0;
     int result, init_frame = !avctx->frame_number;
     enum {
         NUV_UNCOMPRESSED  = '0',
@@ -204,6 +205,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         }
         break;
     case NUV_COPY_LAST:
+        flags |= FF_REGET_BUFFER_FLAG_READONLY;
         keyframe = 0;
         break;
     default:
@@ -217,6 +219,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     case NUV_RTJPEG:
         minsize = c->width/16 * (c->height/16) * 6;
         break;
+    case NUV_BLACK:
+    case NUV_COPY_LAST:
+    case NUV_LZO:
+    case NUV_RTJPEG_IN_LZO:
+        break;
+    default:
+        av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
+        return AVERROR_INVALIDDATA;
     }
     if (buf_size < minsize / 4)
         return AVERROR_INVALIDDATA;
@@ -268,7 +278,7 @@ retry:
         init_frame = 1;
     }
 
-    if ((result = ff_reget_buffer(avctx, c->pic)) < 0)
+    if ((result = ff_reget_buffer(avctx, c->pic, flags)) < 0)
         return result;
     if (init_frame) {
         memset(c->pic->data[0], 0,    avctx->height * c->pic->linesize[0]);
@@ -305,9 +315,6 @@ retry:
     case NUV_COPY_LAST:
         /* nothing more to do here */
         break;
-    default:
-        av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
-        return AVERROR_INVALIDDATA;
     }
 
     if ((result = av_frame_ref(picture, c->pic)) < 0)
@@ -355,7 +362,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ff_nuv_decoder = {
+const AVCodec ff_nuv_decoder = {
     .name           = "nuv",
     .long_name      = NULL_IF_CONFIG_SMALL("NuppelVideo/RTJPEG"),
     .type           = AVMEDIA_TYPE_VIDEO,