56 fprintf(stderr,
"Unable to decode this file using VA-API.\n");
67 fprintf(stderr,
"Cannot open input file '%s', Error code: %s\n",
73 fprintf(stderr,
"Cannot find input stream information. Error code: %s\n",
80 fprintf(stderr,
"Cannot find a video stream in the input file. " 91 fprintf(stderr,
"avcodec_parameters_to_context error. Error code: %s\n",
98 fprintf(stderr,
"A hardware device reference create failed.\n");
104 fprintf(stderr,
"Failed to open codec for decoding. Error code: %s\n",
120 fprintf(stderr,
"Error during encoding. Error code: %s\n",
av_err2str(ret));
133 fprintf(stderr,
"Error during writing data to output file. " 142 ret = ((ret ==
AVERROR(EAGAIN)) ? 0:-1);
153 fprintf(stderr,
"Error during decoding. Error code: %s\n",
av_err2str(ret));
165 }
else if (ret < 0) {
166 fprintf(stderr,
"Error while decoding. Error code: %s\n",
av_err2str(ret));
188 fprintf(stderr,
"Failed to open encode codec. Error code: %s\n",
194 fprintf(stderr,
"Failed to allocate stream for output format.\n");
202 fprintf(stderr,
"Failed to copy the stream parameters. " 209 fprintf(stderr,
"Error while writing stream header. " 218 fprintf(stderr,
"Error during encoding and writing.\n");
228 int main(
int argc,
char **argv)
235 fprintf(stderr,
"Usage: %s <input file> <encode codec> <output file>\n" 236 "The output format is guessed according to the file extension.\n" 243 fprintf(stderr,
"Failed to create a VAAPI device. Error code: %s\n",
av_err2str(ret));
251 fprintf(stderr,
"Could not find encoder '%s'\n", argv[2]);
257 fprintf(stderr,
"Failed to deduce output format from file extension. Error code: " 269 fprintf(stderr,
"Cannot open output file. " 280 ret =
dec_enc(&dec_pkt, enc_codec);
288 ret =
dec_enc(&dec_pkt, enc_codec);
int avio_open(AVIOContext **s, const char *url, int flags)
Create and initialize a AVIOContext for accessing the resource indicated by url.
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
static enum AVPixelFormat get_vaapi_format(AVCodecContext *ctx, const enum AVPixelFormat *pix_fmts)
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
static int encode_write(AVFrame *frame)
This structure describes decoded (raw) audio or video data.
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
int avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
static AVCodecContext * decoder_ctx
#define AVIO_FLAG_WRITE
write-only
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static int open_input_file(const char *filename)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
static av_cold int end(AVCodecContext *avctx)
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
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.
static AVBufferRef * hw_device_ctx
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags)
Find the "best" stream in the file.
void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another...
static AVFormatContext * ofmt_ctx
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
static const chunk_decoder decoder[8]
int width
picture width / height.
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames...
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
static AVCodecContext * encoder_ctx
int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Libavcodec external API header.
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer...
AVIOContext * pb
I/O context.
main external API structure.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
Supply a raw video or audio frame to the encoder.
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
static int dec_enc(AVPacket *pkt, AVCodec *enc_codec)
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
static enum AVPixelFormat pix_fmts[]
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
A reference to a data buffer.
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
int main(int argc, char **argv)
static AVFormatContext * ifmt_ctx
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
AVPixelFormat
Pixel format.
This structure stores compressed data.