fix: ps startcode leading length

ireader · ireader · commit 87d503bdfd70 · 2024-12-14T10:31:59.000+08:00
diff --git a/libmpeg/source/mpeg-ts-h264.c b/libmpeg/source/mpeg-ts-h264.c
@@ -147,7 +147,7 @@ int mpeg_h264_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)
         {
             // pes data loss ???
             *vcl = MPEG_VCL_CORRUPT;
-            return (int)(p - data + n - leading);
+            return (int)(p - data + n - (leading>3?3:leading));
         }
         else
         {
diff --git a/libmpeg/source/mpeg-ts-h265.c b/libmpeg/source/mpeg-ts-h265.c
@@ -122,7 +122,7 @@ int mpeg_h265_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)
         {
             // pes data loss ???
             *vcl = MPEG_VCL_CORRUPT; // for assert
-            return (int)(p - data + n - leading);
+            return (int)(p - data + n - (leading > 3 ? 3 : leading));
         }
         else
         {
diff --git a/libmpeg/source/mpeg-ts-h266.c b/libmpeg/source/mpeg-ts-h266.c
@@ -86,7 +86,7 @@ int mpeg_h266_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)
         {
             // pes data loss ???
             *vcl = MPEG_VCL_CORRUPT; // for assert
-            return (int)(p - data + n - leading);
+            return (int)(p - data + n - (leading > 3 ? 3 : leading));
         }
         else
         {

Original file line number	Diff line number	Diff line change
`@@ -147,7 +147,7 @@ int mpeg_h264_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)`
`147`	`147`	`{`
`148`	`148`	`// pes data loss ???`
`149`	`149`	`*vcl = MPEG_VCL_CORRUPT;`
`150`		`- return (int)(p - data + n - leading);`
	`150`	`+ return (int)(p - data + n - (leading>3?3:leading));`
`151`	`151`	`}`
`152`	`152`	`else`
`153`	`153`	`{`
Original file line number	Diff line number	Diff line change
`@@ -122,7 +122,7 @@ int mpeg_h265_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)`
`122`	`122`	`{`
`123`	`123`	`// pes data loss ???`
`124`	`124`	`*vcl = MPEG_VCL_CORRUPT; // for assert`
`125`		`- return (int)(p - data + n - leading);`
	`125`	`+ return (int)(p - data + n - (leading > 3 ? 3 : leading));`
`126`	`126`	`}`
`127`	`127`	`else`
`128`	`128`	`{`
Original file line number	Diff line number	Diff line change
`@@ -86,7 +86,7 @@ int mpeg_h266_find_new_access_unit(const uint8_t* data, size_t bytes, int* vcl)`
`86`	`86`	`{`
`87`	`87`	`// pes data loss ???`
`88`	`88`	`*vcl = MPEG_VCL_CORRUPT; // for assert`
`89`		`- return (int)(p - data + n - leading);`
	`89`	`+ return (int)(p - data + n - (leading > 3 ? 3 : leading));`
`90`	`90`	`}`
`91`	`91`	`else`
`92`	`92`	`{`