lavc/vorbisdsp: use ptrdiff_t rather than intptr_t

... for a difference between pointers.

libavcodec/aarch64/vorbisdsp_init.c

@@ -22,7 +22,7 @@
 #include "libavcodec/vorbisdsp.h"
 
 void ff_vorbis_inverse_coupling_neon(float *mag, float *ang,
-                                     intptr_t blocksize);
+                                     ptrdiff_t blocksize);
 
 av_cold void ff_vorbisdsp_init_aarch64(VorbisDSPContext *c)
 {

libavcodec/arm/vorbisdsp_init_arm.c

@@ -25,7 +25,7 @@
 #include "libavcodec/vorbisdsp.h"
 
 void ff_vorbis_inverse_coupling_neon(float *mag, float *ang,
-                                     intptr_t blocksize);
+                                     ptrdiff_t blocksize);
 
 av_cold void ff_vorbisdsp_init_arm(VorbisDSPContext *c)
 {

libavcodec/ppc/vorbisdsp_altivec.c

@@ -29,7 +29,7 @@
 
 #if HAVE_ALTIVEC
 static void vorbis_inverse_coupling_altivec(float *mag, float *ang,
-                                            intptr_t blocksize)
+                                            ptrdiff_t blocksize)
 {
     vector float m, a;
     vector bool int t0, t1;

libavcodec/vorbis.h

@@ -45,7 +45,7 @@ int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num);
 void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values,
                                   uint16_t *y_list, int *flag,
                                   int multiplier, float * out, int samples);
-void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize);
+void ff_vorbis_inverse_coupling(float *mag, float *ang, ptrdiff_t blocksize);
 
 #define ilog(i) av_log2(2*(i))
 

libavcodec/vorbisdec.c

@@ -1579,7 +1579,7 @@ static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
     }
 }
 
-void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize)
+void ff_vorbis_inverse_coupling(float *mag, float *ang, ptrdiff_t blocksize)
 {
     for (ptrdiff_t i = 0; i < blocksize; i++) {
         if (mag[i] > 0.0) {

libavcodec/vorbisdsp.h

@@ -19,12 +19,12 @@
 #ifndef AVCODEC_VORBISDSP_H
 #define AVCODEC_VORBISDSP_H
 
-#include <stdint.h>
+#include <stddef.h>
 
 typedef struct VorbisDSPContext {
     /* assume len is a multiple of 4, and arrays are 16-byte aligned */
     void (*vorbis_inverse_coupling)(float *mag, float *ang,
-                                    intptr_t blocksize);
+                                    ptrdiff_t blocksize);
 } VorbisDSPContext;
 
 void ff_vorbisdsp_init(VorbisDSPContext *dsp);

libavcodec/x86/vorbisdsp_init.c

@@ -25,7 +25,7 @@
 #include "libavcodec/vorbisdsp.h"
 
 void ff_vorbis_inverse_coupling_sse(float *mag, float *ang,
-                                    intptr_t blocksize);
+                                    ptrdiff_t blocksize);
 
 av_cold void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp)
 {