API changes, most recent first:
+2018-03-21 - xxxxxxx - lavc 58.15.100 - avcodec.h
+ Add av_packet_make_writable().
+
2018-03-18 - xxxxxxx - lavu 56.11.100 - frame.h
Add AV_FRAME_DATA_QP_TABLE_PROPERTIES and AV_FRAME_DATA_QP_TABLE_DATA.
*/
int av_packet_copy_props(AVPacket *dst, const AVPacket *src);
+/**
+ * Create a writable reference for the data described by a given packet,
+ * avoiding data copy if possible.
+ *
+ * @param pkt Packet whose data should be made writable.
+ *
+ * @return 0 on success, a negative AVERROR on failure. On failure, the
+ * packet is unchanged.
+ */
+int av_packet_make_writable(AVPacket *pkt);
+
/**
* Convert valid timing fields (timestamps / durations) in a packet from one
* timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be
src->size = 0;
}
+int av_packet_make_writable(AVPacket *pkt)
+{
+ AVBufferRef *buf = NULL;
+ int ret;
+
+ if (pkt->buf && av_buffer_is_writable(pkt->buf))
+ return 0;
+
+ if (!pkt->data)
+ return AVERROR(EINVAL);
+
+ ret = packet_alloc(&buf, pkt->size);
+ if (ret < 0)
+ return ret;
+ if (pkt->size)
+ memcpy(buf->data, pkt->data, pkt->size);
+
+ av_buffer_unref(&pkt->buf);
+ pkt->buf = buf;
+ pkt->data = buf->data;
+
+ return 0;
+}
+
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
{
if (pkt->pts != AV_NOPTS_VALUE)
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
-#define LIBAVCODEC_VERSION_MINOR 14
+#define LIBAVCODEC_VERSION_MINOR 15
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \