* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
*/
/**
#include <stdio.h>
#include <stdlib.h>
-#include "common.h"
#include "avcodec.h"
-#ifdef CONFIG_ZLIB
#include <zlib.h>
#define ZMBV_KEYFRAME 1
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 dx, dy, tx, ty, tv, bv;
+ int dx, dy, tx, ty, tv, bv, bw, bh;
*mx = *my = 0;
- bv = block_cmp(src, sstride, prev, pstride, ZMBV_BLOCK, ZMBV_BLOCK);
+ bw = FFMIN(ZMBV_BLOCK, c->avctx->width - x);
+ bh = FFMIN(ZMBV_BLOCK, c->avctx->height - y);
+ bv = block_cmp(src, sstride, prev, pstride, bw, bh);
if(!bv) return 0;
- for(ty = FFMAX(y - c->range, 0); ty < FFMIN(y + c->range, c->avctx->height - ZMBV_BLOCK); ty++){
- for(tx = FFMAX(x - c->range, 0); tx < FFMIN(x + c->range, c->avctx->width - ZMBV_BLOCK); tx++){
+ for(ty = FFMAX(y - c->range, 0); ty < FFMIN(y + c->range, c->avctx->height - bh); ty++){
+ for(tx = FFMAX(x - c->range, 0); tx < FFMIN(x + c->range, c->avctx->width - bw); tx++){
if(tx == x && ty == y) continue; // we already tested this block
dx = tx - x;
dy = ty - y;
- tv = block_cmp(src, sstride, prev + dx + dy*pstride, pstride, ZMBV_BLOCK, ZMBV_BLOCK);
+ tv = block_cmp(src, sstride, prev + dx + dy*pstride, pstride, bw, bh);
if(tv < bv){
bv = tv;
*mx = dx;
static int encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
+ ZmbvEncContext * const c = avctx->priv_data;
AVFrame *pict = data;
AVFrame * const p = &c->pic;
uint8_t *src, *prev;
int i, j;
keyframe = !c->curfrm;
- c->curfrm = c->curfrm++;
+ c->curfrm++;
if(c->curfrm == c->keyint)
c->curfrm = 0;
*p = *pict;
if(chpal){
uint8_t tpal[3];
for(i = 0; i < 256; i++){
- tpal[0] = palptr[i] >> 16;
- tpal[1] = palptr[i] >> 8;
- tpal[2] = palptr[i];
+ AV_WB24(tpal, palptr[i]);
c->work_buf[work_size++] = tpal[0] ^ c->pal[i * 3 + 0];
c->work_buf[work_size++] = tpal[1] ^ c->pal[i * 3 + 1];
c->work_buf[work_size++] = tpal[2] ^ c->pal[i * 3 + 2];
}
if(keyframe){
for(i = 0; i < 256; i++){
- c->pal[i*3 + 0] = palptr[i] >> 16;
- c->pal[i*3 + 1] = palptr[i] >> 8;
- c->pal[i*3 + 2] = palptr[i];
+ AV_WB24(c->pal+(i*3), palptr[i]);
}
memcpy(c->work_buf, c->pal, 768);
memcpy(c->pal2, p->data[1], 1024);
/**
* Init zmbv encoder
*/
-static int encode_init(AVCodecContext *avctx)
+static av_cold int encode_init(AVCodecContext *avctx)
{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
+ ZmbvEncContext * const c = avctx->priv_data;
int zret; // Zlib return code
int lvl = 9;
/**
- * Uninit zmbv decoder
+ * Uninit zmbv encoder
*/
-static int encode_end(AVCodecContext *avctx)
+static av_cold int encode_end(AVCodecContext *avctx)
{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
+ ZmbvEncContext * const c = avctx->priv_data;
av_freep(&c->comp_buf);
av_freep(&c->work_buf);
encode_frame,
encode_end,
.pix_fmts = (enum PixelFormat[]){PIX_FMT_PAL8, -1},
+ .long_name = "Zip Motion Blocks Video",
};
-#endif