Move arch check before OS check.

[ffmpeg] / libavcodec / tiff.c

diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 97f4c7398751fab64f0f0e456094ad700ca93e4c..6cda29dbb5535fa0ff7249f30768d17249c03363 100644 (file)
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -44,25 +44,25 @@ typedef struct TiffContext {
 
     int strips, rps;
     int sot;
-    uint8_t* stripdata;
-    uint8_t* stripsizes;
+    const uint8_t* stripdata;
+    const uint8_t* stripsizes;
     int stripsize, stripoff;
     LZWState *lzw;
 } TiffContext;
 
-static int tget_short(uint8_t **p, int le){
+static int tget_short(const uint8_t **p, int le){
     int v = le ? AV_RL16(*p) : AV_RB16(*p);
     *p += 2;
     return v;
 }
 
-static int tget_long(uint8_t **p, int le){
+static int tget_long(const uint8_t **p, int le){
     int v = le ? AV_RL32(*p) : AV_RB32(*p);
     *p += 4;
     return v;
 }
 
-static int tget(uint8_t **p, int type, int le){
+static int tget(const uint8_t **p, int type, int le){
     switch(type){
     case TIFF_BYTE : return *(*p)++;
     case TIFF_SHORT: return tget_short(p, le);
@@ -71,9 +71,9 @@ static int tget(uint8_t **p, int type, int le){
     }
 }
 
-static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, uint8_t *src, int size, int lines){
+static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uint8_t *src, int size, int lines){
     int c, line, pixels, code;
-    uint8_t *ssrc = src;
+    const uint8_t *ssrc = src;
     int width = s->width * (s->bpp / 8);
 #ifdef CONFIG_ZLIB
     uint8_t *zbuf; unsigned long outlen;
@@ -150,13 +150,14 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, uint8_t *
 }
 
 
-static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t *end_buf, AVFrame *pic)
+static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *buf, const uint8_t *end_buf, AVFrame *pic)
 {
     int tag, type, count, off, value = 0;
-    uint8_t *src, *dst;
+    const uint8_t *src;
+    uint8_t *dst;
     int i, j, ssize, soff, stride;
-    int *pal;
-    uint8_t *rp, *gp, *bp;
+    uint32_t *pal;
+    const uint8_t *rp, *gp, *bp;
 
     tag = tget_short(&buf, s->le);
     type = tget_short(&buf, s->le);
@@ -245,7 +246,7 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
         }
         if(s->bpp == 8){
             /* make default grayscale pal */
-            pal = (int *) s->picture.data[1];
+            pal = (uint32_t *) s->picture.data[1];
             for(i = 0; i < 256; i++)
                 pal[i] = i * 0x010101;
         }
@@ -346,14 +347,14 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
             return -1;
         }
         if(value == 2){
-            src = pic->data[0];
+            dst = pic->data[0];
             stride = pic->linesize[0];
             soff = s->bpp >> 3;
             ssize = s->width * soff;
             for(i = 0; i < s->height; i++) {
                 for(j = soff; j < ssize; j++)
-                    src[j] += src[j - soff];
-                src += stride;
+                    dst[j] += dst[j - soff];
+                dst += stride;
             }
         }
         break;
@@ -378,7 +379,7 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
             av_log(s->avctx, AV_LOG_ERROR, "Palette met but this is not palettized format\n");
             return -1;
         }
-        pal = (int *) s->picture.data[1];
+        pal = (uint32_t *) s->picture.data[1];
         off = type_sizes[type];
         rp = buf;
         gp = buf + count / 3 * off;
@@ -403,12 +404,12 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
 
 static int decode_frame(AVCodecContext *avctx,
                         void *data, int *data_size,
-                        uint8_t *buf, int buf_size)
+                        const uint8_t *buf, int buf_size)
 {
     TiffContext * const s = avctx->priv_data;
     AVFrame *picture = data;
     AVFrame * const p= (AVFrame*)&s->picture;
-    uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
+    const uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
     int id, le, off;
     int i, entries;
 
@@ -422,6 +423,7 @@ static int decode_frame(AVCodecContext *avctx,
     }
     s->le = le;
     s->invert = 0;
+    s->compr = TIFF_RAW;
     // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
     // that further identifies the file as a TIFF file"
     if(tget_short(&buf, le) != 42){
@@ -459,7 +461,7 @@ static int decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-static int tiff_init(AVCodecContext *avctx){
+static av_cold int tiff_init(AVCodecContext *avctx){
     TiffContext *s = avctx->priv_data;
 
     s->width = 0;
@@ -473,7 +475,7 @@ static int tiff_init(AVCodecContext *avctx){
     return 0;
 }
 
-static int tiff_end(AVCodecContext *avctx)
+static av_cold int tiff_end(AVCodecContext *avctx)
 {
     TiffContext * const s = avctx->priv_data;
 
@@ -493,5 +495,6 @@ AVCodec tiff_decoder = {
     tiff_end,
     decode_frame,
     0,
-    NULL
+    NULL,
+    .long_name = "TIFF image",
 };