/**
* A reference to the AVHWFramesContext describing the input (for encoding)
* or output (decoding) frames. The reference is set by the caller and
- * afterwards owned (and freed) by libavcodec.
+ * afterwards owned (and freed) by libavcodec - it should never be read by
+ * the caller after being set.
*
* - decoding: This field should be set by the caller from the get_format()
* callback. The previous reference (if any) will always be
*/
int64_t max_pixels;
+ /**
+ * A reference to the AVHWDeviceContext describing the device which will
+ * be used by a hardware encoder/decoder. The reference is set by the
+ * caller and afterwards owned (and freed) by libavcodec.
+ *
+ * This should be used if either the codec device does not require
+ * hardware frames or any that are used are to be allocated internally by
+ * libavcodec. If the user wishes to supply any of the frames used as
+ * encoder input or decoder output then hw_frames_ctx should be used
+ * instead. When hw_frames_ctx is set in get_format() for a decoder, this
+ * field will be ignored while decoding the associated stream segment, but
+ * may again be used on a following one after another get_format() call.
+ *
+ * For both encoders and decoders this field should be set before
+ * avcodec_open2() is called and must not be written to thereafter.
+ *
+ * Note that some decoders may require this field to be set initially in
+ * order to support hw_frames_ctx at all - in that case, all frames
+ * contexts used must be created on the same device.
+ */
+ AVBufferRef *hw_device_ctx;
} AVCodecContext;
AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx);
avctx->nb_coded_side_data = 0;
av_buffer_unref(&avctx->hw_frames_ctx);
+ av_buffer_unref(&avctx->hw_device_ctx);
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
av_opt_free(avctx->priv_data);
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 57
-#define LIBAVCODEC_VERSION_MINOR 79
+#define LIBAVCODEC_VERSION_MINOR 80
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \