65 frames_hwctx = frames_ctx->
hwctx;
73 frames_hwctx->
frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
85 fprintf(stderr,
"The QSV pixel format not offered in get_format()\n");
98 fprintf(stderr,
"Error during decoding\n");
109 fprintf(stderr,
"Error during decoding\n");
118 fprintf(stderr,
"Error transferring the data to system memory\n");
123 for (j = 0; j < (sw_frame->
height >> (i > 0)); j++)
137 int main(
int argc,
char **argv)
156 fprintf(stderr,
"Usage: %s <input file> <output file>\n", argv[0]);
163 fprintf(stderr,
"Cannot open input file '%s': ", argv[1]);
177 fprintf(stderr,
"No H.264 video stream in the input file\n");
185 fprintf(stderr,
"Cannot open the hardware device\n");
192 fprintf(stderr,
"The QSV decoder is not present in libavcodec\n");
220 fprintf(stderr,
"Error opening the decoder: ");
227 fprintf(stderr,
"Error opening the output context: ");
233 if (!frame || !sw_frame) {
245 ret =
decode_packet(&decode, decoder_ctx, frame, sw_frame, &pkt, output_ctx);
253 ret =
decode_packet(&decode, decoder_ctx, frame, sw_frame, &pkt, output_ctx);
259 fprintf(stderr,
"%s\n", buf);
int avio_open(AVIOContext **s, const char *url, int flags)
Create and initialize a AVIOContext for accessing the resource indicated by url.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
This structure describes decoded (raw) audio or video data.
int coded_width
Bitstream width / height, may be different from width/height e.g.
int frame_type
A combination of MFX_MEMTYPE_* describing the frame pool.
Memory handling functions.
This struct is allocated as AVHWFramesContext.hwctx.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int index
stream index in AVFormatContext
#define AVIO_FLAG_WRITE
write-only
int width
The allocated dimensions of the frames in this pool.
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVStream ** streams
A list of all streams in the file.
int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type, const char *device, AVDictionary *opts, int flags)
Open a device of the specified type and create an AVHWDeviceContext for it.
#define AVERROR_EOF
End of file.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
static int get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts)
int main(int argc, char **argv)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
int extradata_size
Size of the extradata content in bytes.
int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags)
Copy data to or from a hw surface.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int initial_pool_size
Initial size of the frame pool.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
static const chunk_decoder decoder[8]
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames...
#define FF_ARRAY_ELEMS(a)
int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Libavcodec external API header.
static int decode_packet(DecodeContext *decode, AVCodecContext *decoder_ctx, AVFrame *frame, AVFrame *sw_frame, AVPacket *pkt, AVIOContext *output_ctx)
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer...
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
uint8_t * data
The data buffer.
void * hwctx
The format-specific data, allocated and freed automatically along with this context.
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
This struct describes a set or pool of "hardware" frames (i.e.
HW acceleration through QSV, data[3] contains a pointer to the mfxFrameSurface1 structure.
refcounted data buffer API
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
attribute_deprecated int refcounted_frames
If non-zero, the decoded audio and video frames returned from avcodec_decode_video2() and avcodec_dec...
static enum AVPixelFormat pix_fmts[]
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
A reference to a data buffer.
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
An API-specific header for AV_HWDEVICE_TYPE_QSV.
AVCodecParameters * codecpar
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
AVPixelFormat
Pixel format.
This structure stores compressed data.
void av_register_all(void)
Initialize libavformat and register all the muxers, demuxers and protocols.
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
void * opaque
Private data of the user, can be used to carry app specific stuff.
AVBufferRef * hw_device_ref