intrax8: Change type of array stride parameters to ptrdiff_t

ptrdiff_t is the correct type for array strides and similar.

Also rename all such parameters to "stride" for consistency.

libavcodec/intrax8.c

@@ -548,7 +548,7 @@ static void x8_ac_compensation(IntraX8Context *const w, const int direction,
 }
 
 static void dsp_x8_put_solidcolor(const uint8_t pix, uint8_t *dst,
-                                  const int linesize)
+                                  const ptrdiff_t linesize)
 {
     int k;
     for (k = 0; k < 8; k++) {
@@ -700,7 +700,7 @@ block_placed:
 
     if (w->loopfilter) {
         uint8_t *ptr = w->dest[chroma];
-        int linesize = w->frame->linesize[!!chroma];
+        ptrdiff_t linesize = w->frame->linesize[!!chroma];
 
         if (!((w->edges & 2) || (zeros_only && (w->orient | 4) == 4)))
             w->dsp.h_loop_filter(ptr, linesize, w->quant);
@@ -716,8 +716,8 @@ static void x8_init_block_index(IntraX8Context *w, AVFrame *frame)
 {
     // not parent codec linesize as this would be wrong for field pics
     // not that IntraX8 has interlacing support ;)
-    const int linesize   = frame->linesize[0];
-    const int uvlinesize = frame->linesize[1];
+    const ptrdiff_t linesize   = frame->linesize[0];
+    const ptrdiff_t uvlinesize = frame->linesize[1];
 
     w->dest[0] = frame->data[0];
     w->dest[1] = frame->data[1];

libavcodec/intrax8dsp.c

@@ -63,8 +63,8 @@
                 4   - mb_x>= (mb_width-1) last block in the row, interpolate area #5;
 -*/
 static void x8_setup_spatial_compensation(uint8_t *src, uint8_t *dst,
-                                          int linesize, int *range, int *psum,
-                                          int edges)
+                                          ptrdiff_t stride, int *range,
+                                          int *psum, int edges)
 {
     uint8_t *ptr;
     int sum;
@@ -98,12 +98,12 @@ static void x8_setup_spatial_compensation(uint8_t *src, uint8_t *dst,
             max_pix        = FFMAX(max_pix, c);
             dst[area2 + i] = c;
 
-            ptr += linesize;
+            ptr += stride;
         }
     }
 
     if (!(edges & 2)) { // (mb_y != 0) // there is row above
-        ptr = src - linesize; // top line
+        ptr = src - stride; // top line
         for (i = 0; i < 8; i++) {
             c       = *(ptr + i);
             sum    += c;
@@ -117,7 +117,7 @@ static void x8_setup_spatial_compensation(uint8_t *src, uint8_t *dst,
             memcpy(dst + area4, ptr, 16); // both area4 and 5
         }
         // area6 always present in the above block
-        memcpy(dst + area6, ptr - linesize, 8);
+        memcpy(dst + area6, ptr - stride, 8);
     }
     // now calculate the stuff we need
     if (edges & 3) { // mb_x ==0 || mb_y == 0) {
@@ -131,7 +131,7 @@ static void x8_setup_spatial_compensation(uint8_t *src, uint8_t *dst,
         sum += avg * 9;
     } else {
         // the edge pixel, in the top line and left column
-        uint8_t c = *(src - 1 - linesize);
+        uint8_t c = *(src - 1 - stride);
         dst[area3] = c;
         sum       += c;
         // edge pixel is not part of min/max
@@ -160,7 +160,7 @@ static const uint16_t zero_prediction_weights[64 * 2] = {
     317,  846, 366,  731, 458,  611, 499, 499,
 };
 
-static void spatial_compensation_0(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_0(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int i, j;
     int x, y;
@@ -208,55 +208,55 @@ static void spatial_compensation_0(uint8_t *src, uint8_t *dst, int linesize)
             dst[x] = ((uint32_t)  top_sum[0][x] * zero_prediction_weights[y * 16 + x * 2 + 0] +
                       (uint32_t) left_sum[0][y] * zero_prediction_weights[y * 16 + x * 2 + 1] +
                       0x8000) >> 16;
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_1(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_1(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = src[area4 + FFMIN(2 * y + x + 2, 15)];
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_2(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_2(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = src[area4 + 1 + y + x];
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_3(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_3(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = src[area4 + ((y + 1) >> 1) + x];
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_4(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_4(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = (src[area4 + x] + src[area6 + x] + 1) >> 1;
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_5(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_5(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
@@ -267,22 +267,22 @@ static void spatial_compensation_5(uint8_t *src, uint8_t *dst, int linesize)
             else
                 dst[x] = src[area4 + x - ((y + 1) >> 1)];
         }
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_6(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_6(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = src[area3 + x - y];
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_7(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_7(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
@@ -293,55 +293,56 @@ static void spatial_compensation_7(uint8_t *src, uint8_t *dst, int linesize)
             else
                 dst[x] = src[area2 + 8 - y + (x >> 1)];
         }
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_8(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_8(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = (src[area1 + 7 - y] + src[area2 + 7 - y] + 1) >> 1;
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_9(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_9(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = src[area2 + 6 - FFMIN(x + y, 6)];
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_10(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_10(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = (src[area2 + 7 - y] * (8 - x) + src[area4 + x] * x + 4) >> 3;
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void spatial_compensation_11(uint8_t *src, uint8_t *dst, int linesize)
+static void spatial_compensation_11(uint8_t *src, uint8_t *dst, ptrdiff_t stride)
 {
     int x, y;
 
     for (y = 0; y < 8; y++) {
         for (x = 0; x < 8; x++)
             dst[x] = (src[area2 + 7 - y] * y + src[area4 + x] * (8 - y) + 4) >> 3;
-        dst += linesize;
+        dst += stride;
     }
 }
 
-static void x8_loop_filter(uint8_t *ptr, const int a_stride, const int b_stride, int quant)
+static void x8_loop_filter(uint8_t *ptr, const ptrdiff_t a_stride,
+                           const ptrdiff_t b_stride, int quant)
 {
     int i, t;
     int p0, p1, p2, p3, p4, p5, p6, p7, p8, p9;
@@ -434,12 +435,12 @@ static void x8_loop_filter(uint8_t *ptr, const int a_stride, const int b_stride,
     }
 }
 
-static void x8_h_loop_filter(uint8_t *src, int stride, int qscale)
+static void x8_h_loop_filter(uint8_t *src, ptrdiff_t stride, int qscale)
 {
     x8_loop_filter(src, stride, 1, qscale);
 }
 
-static void x8_v_loop_filter(uint8_t *src, int stride, int qscale)
+static void x8_v_loop_filter(uint8_t *src, ptrdiff_t stride, int qscale)
 {
     x8_loop_filter(src, 1, stride, qscale);
 }

libavcodec/intrax8dsp.h

@@ -19,15 +19,18 @@
 #ifndef AVCODEC_INTRAX8DSP_H
 #define AVCODEC_INTRAX8DSP_H
 
+#include <stddef.h>
 #include <stdint.h>
 
 typedef struct IntraX8DSPContext {
-    void (*v_loop_filter)(uint8_t *src, int stride, int qscale);
-    void (*h_loop_filter)(uint8_t *src, int stride, int qscale);
+    void (*v_loop_filter)(uint8_t *src, ptrdiff_t stride, int qscale);
+    void (*h_loop_filter)(uint8_t *src, ptrdiff_t stride, int qscale);
 
-    void (*spatial_compensation[12])(uint8_t *src, uint8_t *dst, int linesize);
-    void (*setup_spatial_compensation)(uint8_t *src, uint8_t *dst, int linesize,
-                                       int *range, int *sum, int edges);
+    void (*spatial_compensation[12])(uint8_t *src, uint8_t *dst,
+                                     ptrdiff_t stride);
+    void (*setup_spatial_compensation)(uint8_t *src, uint8_t *dst,
+                                       ptrdiff_t stride, int *range,
+                                       int *sum, int edges);
 } IntraX8DSPContext;
 
 void ff_intrax8dsp_init(IntraX8DSPContext *dsp);