36 z_stream *zstream = &zc->
zstream;
56 zret = inflateReset(zstream);
65 zstream->next_in = avpkt->
data;
66 zstream->avail_in = avpkt->
size;
76 zstream->next_out = dst;
77 zstream->avail_out = avctx->
width << 1;
79 zret = inflate(zstream, Z_SYNC_FLUSH);
80 if (zret != Z_OK && zret != Z_STREAM_END) {
82 "Inflate failed with return code: %d.\n", zret);
87 for (j = 0; j < avctx->
width << 1; j++)
88 dst[j] += prev[j] & -!dst[j];
117 z_stream *zstream = &zc->
zstream;
123 zstream->zalloc = Z_NULL;
124 zstream->zfree = Z_NULL;
125 zstream->opaque = Z_NULL;
127 zret = inflateInit(zstream);
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
static av_cold int zerocodec_decode_close(AVCodecContext *avctx)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static int zerocodec_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Libavcodec external API header.
int flags
A combination of AV_PKT_FLAG values.
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
common internal and external API header
int key_frame
1 -> keyframe, 0-> not
static av_cold int zerocodec_decode_init(AVCodecContext *avctx)
This structure stores compressed data.
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
AVCodec ff_zerocodec_decoder