66 const AVFrame *p,
int *got_packet)
71 int max_size = deflateBound(&
c->zstream, avctx->
width * avctx->
height * 3);
81 zret = deflateReset(&
c->zstream);
91 c->zstream.avail_in = avctx->
width*3;
92 zret =
deflate(&
c->zstream, Z_NO_FLUSH);
98 zret =
deflate(&
c->zstream, Z_FINISH);
99 if (zret != Z_STREAM_END) {
124 #if FF_API_CODED_FRAME
146 c->avctx->extradata_size= 8;
148 c->zstream.zalloc = Z_NULL;
149 c->zstream.zfree = Z_NULL;
150 c->zstream.opaque = Z_NULL;
151 zret = deflateInit(&
c->zstream,
c->compression);
165 deflateEnd(&
c->zstream);
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Libavcodec external API header.
#define FF_COMPRESSION_DEFAULT
static av_cold int init(AVCodecContext *avctx)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
@ AV_PICTURE_TYPE_I
Intra.
static av_cold int encode_init(AVCodecContext *avctx)
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *p, int *got_packet)
static av_cold int encode_end(AVCodecContext *avctx)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define FF_DISABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
static enum AVPixelFormat pix_fmts[]
Memory handling functions.
AVPixelFormat
Pixel format.
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int key_frame
1 -> keyframe, 0-> not
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
enum AVPictureType pict_type
Picture type of the frame.
This structure stores compressed data.
int flags
A combination of AV_PKT_FLAG values.
static void deflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)