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67 uint64_t packet_size = (uint64_t)avpkt->
size * 8;
91 for (j = 0; j < avctx->
width; j += 2) {
129 int buf_size = avpkt->
size;
145 .
p.
name =
"bitpacked",
153 .codec_tags = (
const uint32_t []){
154 MKTAG(
'U',
'Y',
'V',
'Y'),
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
#define u(width, name, range_min, range_max)
This structure describes decoded (raw) audio or video data.
static int bitpacked_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
AVBufferRef * av_buffer_ref(const AVBufferRef *buf)
Create a new reference to an AVBuffer.
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have so the codec calls ff_thread_report set FF_CODEC_CAP_ALLOCATE_PROGRESS in FFCodec caps_internal and use ff_thread_get_buffer() to allocate frames. Otherwise decode directly into the user-supplied frames. Call ff_thread_report_progress() after some part of the current picture has decoded. A good place to put this is where draw_horiz_band() is called - add this if it isn 't called anywhere
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
AVCodec p
The public AVCodec.
#define FF_CODEC_TAGS_END
FFCodec.codec_tags termination value.
#define AV_FRAME_FLAG_KEY
A flag to mark frames that are keyframes.
#define FF_CODEC_DECODE_CB(func)
int(* init)(AVBSFContext *ctx)
static av_cold int bitpacked_init_decoder(AVCodecContext *avctx)
#define CODEC_LONG_NAME(str)
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
static int bitpacked_decode_yuv422p10(AVCodecContext *avctx, AVFrame *frame, const AVPacket *avpkt)
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
const FFCodec ff_bitpacked_decoder
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
@ AV_PICTURE_TYPE_I
Intra.
#define AV_PIX_FMT_YUV422P10
enum AVPictureType pict_type
Picture type of the frame.
int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)
Setup the data pointers and linesizes based on the specified image parameters and the provided array.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define i(width, name, range_min, range_max)
const char * name
Name of the codec implementation.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static int bitpacked_decode_uyvy422(AVCodecContext *avctx, AVFrame *frame, const AVPacket *avpkt)
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
main external API structure.
int(* decode)(AVCodecContext *avctx, AVFrame *frame, const AVPacket *pkt)
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
This structure stores compressed data.
int width
picture width / height.
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define MKTAG(a, b, c, d)