API changes, most recent first:
+2017-02-xx - xxxxxxx - lavu 55.31.0 - cpu.h
+ Add av_cpu_max_align() for querying maximum required data alignment.
+
2016-xx-xx - xxxxxxx - lavf 57.11.0 - avio.h
Add avio_context_free(). From now on it must be used for freeing AVIOContext.
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <stddef.h>
#include <stdint.h>
#include <stdatomic.h>
return nb_cpus;
}
+
+size_t av_cpu_max_align(void)
+{
+ int flags = av_get_cpu_flags();
+
+ if (flags & AV_CPU_FLAG_AVX)
+ return 32;
+ if (flags & (AV_CPU_FLAG_ALTIVEC | AV_CPU_FLAG_SSE | AV_CPU_FLAG_NEON))
+ return 16;
+
+ return 8;
+}
#ifndef AVUTIL_CPU_H
#define AVUTIL_CPU_H
+#include <stddef.h>
+
#include "version.h"
#define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
*/
int av_cpu_count(void);
+/**
+ * Get the maximum data alignment that may be required by Libav.
+ *
+ * Note that this is affected by the build configuration and the CPU flags mask,
+ * so e.g. if the CPU supports AVX, but libavutil has been built with
+ * --disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through
+ * av_set_cpu_flags_mask(), then this function will behave as if AVX is not
+ * present.
+ */
+size_t av_cpu_max_align(void);
+
#endif /* AVUTIL_CPU_H */
*/
#define LIBAVUTIL_VERSION_MAJOR 55
-#define LIBAVUTIL_VERSION_MINOR 30
+#define LIBAVUTIL_VERSION_MINOR 31
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \