Updated max array size computation

asticode · Mar 29, 2024 · 5f81a71 · 5f81a71
1 parent bd956ab
commit 5f81a71
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Showing 2 changed files with 4 additions and 7 deletions.
diff --git a/filter_context.go b/filter_context.go
@@ -7,6 +7,7 @@ package astiav
 //#include <libavutil/frame.h>
 import "C"
 import (
+	"math"
 	"unsafe"
 )
 
@@ -60,15 +61,15 @@ func (fc *FilterContext) NbOutputs() int {
 }
 
 func (fc *FilterContext) Inputs() (ls []*FilterLink) {
-	lcs := (*[maxArraySize](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.inputs))
+	lcs := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.struct_AVFilterLink)(nil))](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.inputs))
 	for i := 0; i < fc.NbInputs(); i++ {
 		ls = append(ls, newFilterLinkFromC(lcs[i]))
 	}
 	return
 }
 
 func (fc *FilterContext) Outputs() (ls []*FilterLink) {
-	lcs := (*[maxArraySize](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.outputs))
+	lcs := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.struct_AVFilterLink)(nil))](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.outputs))
 	for i := 0; i < fc.NbOutputs(); i++ {
 		ls = append(ls, newFilterLinkFromC(lcs[i]))
 	}

diff --git a/format_context.go b/format_context.go
@@ -9,10 +9,6 @@ import (
 	"unsafe"
 )
 
-const (
-	maxArraySize = math.MaxInt32 - 1
-)
-
 // https://github.com/FFmpeg/FFmpeg/blob/n5.0/libavformat/avformat.h#L1202
 type FormatContext struct {
 	c *C.struct_AVFormatContext
@@ -134,7 +130,7 @@ func (fc *FormatContext) StartTime() int64 {
 }
 
 func (fc *FormatContext) Streams() (ss []*Stream) {
-	scs := (*[maxArraySize](*C.struct_AVStream))(unsafe.Pointer(fc.c.streams))
+	scs := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.struct_AVStream)(nil))](*C.struct_AVStream))(unsafe.Pointer(fc.c.streams))
 	for i := 0; i < fc.NbStreams(); i++ {
 		ss = append(ss, newStreamFromC(scs[i]))
 	}