37 #define ZMBV_KEYFRAME 1
38 #define ZMBV_DELTAPAL 2
67 int bw,
int bh,
int *xored)
74 for(j = 0; j < bh; j++){
75 for(i = 0; i < bw; i++){
76 int t = src[i] ^ src2[i];
84 for(i = 1; i < 256; i++)
94 int pstride,
int x,
int y,
int *mx,
int *my,
int *xored)
96 int dx, dy, tx, ty, tv, bv, bw, bh;
101 bv =
block_cmp(src, sstride, prev, pstride, bw, bh, xored);
105 if(tx == x && ty == y)
continue;
108 tv =
block_cmp(src, sstride, prev + dx + dy*pstride, pstride, bw, bh, xored);
121 const AVFrame *pict,
int *got_packet)
129 int work_size = 0, pkt_size;
140 chpal = !keyframe && memcmp(p->
data[1], c->
pal2, 1024);
142 palptr = (uint32_t*)p->
data[1];
147 for(i = 0; i < 256; i++){
149 c->
work_buf[work_size++] = tpal[0] ^ c->
pal[i * 3 + 0];
150 c->
work_buf[work_size++] = tpal[1] ^ c->
pal[i * 3 + 1];
151 c->
work_buf[work_size++] = tpal[2] ^ c->
pal[i * 3 + 2];
152 c->
pal[i * 3 + 0] = tpal[0];
153 c->
pal[i * 3 + 1] = tpal[1];
154 c->
pal[i * 3 + 2] = tpal[2];
159 for(i = 0; i < 256; i++){
165 for(i = 0; i < avctx->
height; i++){
168 work_size += avctx->
width;
171 int x, y, bh2, bw2, xored;
179 memset(c->
work_buf + work_size, 0, (bw * bh * 2 + 3) & ~3);
180 work_size += (bw * bh * 2 + 3) & ~3;
191 mv[0] = (mx << 1) | !!xored;
195 for(j = 0; j < bh2; j++){
196 for(i = 0; i < bw2; i++)
197 c->
work_buf[work_size++] = tsrc[i] ^ tprev[i];
210 for(i = 0; i < avctx->
height; i++){
211 memcpy(prev, src, avctx->
width);
220 c->
zstream.avail_in = work_size;
226 if(deflate(&c->
zstream, Z_SYNC_FLUSH) != Z_OK){
231 pkt_size = c->
zstream.total_out + 1 + 6*keyframe;
280 if(lvl < 0 || lvl > 9){
286 memset(&c->
zstream, 0,
sizeof(z_stream));
288 ((avctx->
width + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * ((avctx->
height + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * 2 + 4;
311 zret = deflateInit(&c->
zstream, lvl);
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
This structure describes decoded (raw) audio or video data.
AVFrame * coded_frame
the picture in the bitstream
static av_cold int encode_end(AVCodecContext *avctx)
Uninit zmbv encoder.
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
8 bit with PIX_FMT_RGB32 palette
int me_range
maximum motion estimation search range in subpel units If 0 then no limit.
static int init(AVCodecParserContext *s)
static av_cold int encode_init(AVCodecContext *avctx)
Init zmbv encoder.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
int flags
A combination of AV_PKT_FLAG values.
struct ZmbvEncContext ZmbvEncContext
Encoder context.
enum AVPictureType pict_type
Picture type of the frame, see ?_TYPE below.
int width
picture width / height.
int ff_alloc_packet(AVPacket *avpkt, int size)
Check AVPacket size and/or allocate data.
static const int8_t mv[256][2]
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
static int zmbv_me(ZmbvEncContext *c, uint8_t *src, int sstride, uint8_t *prev, int pstride, int x, int y, int *mx, int *my, int *xored)
Motion estimation function TODO make better ME decisions.
main external API structure.
static void close(AVCodecParserContext *s)
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
common internal and external API header
static int score_tab[256]
int key_frame
1 -> keyframe, 0-> not
static int block_cmp(uint8_t *src, int stride, uint8_t *src2, int stride2, int bw, int bh, int *xored)
Block comparing function XXX should be optimized and moved to DSPContext TODO handle out of edge ME...
AVPixelFormat
Pixel format.
This structure stores compressed data.
int keyint_min
minimum GOP size