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Diffstat (limited to 'contrib/ffmpeg/libavcodec/zmbvenc.c')
-rw-r--r--contrib/ffmpeg/libavcodec/zmbvenc.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/contrib/ffmpeg/libavcodec/zmbvenc.c b/contrib/ffmpeg/libavcodec/zmbvenc.c
deleted file mode 100644
index a79964449..000000000
--- a/contrib/ffmpeg/libavcodec/zmbvenc.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Zip Motion Blocks Video (ZMBV) encoder
- * Copyright (c) 2006 Konstantin Shishkov
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * 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
- *
- */
-
-/**
- * @file zmbvenc.c
- * Zip Motion Blocks Video encoder
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "common.h"
-#include "avcodec.h"
-
-#include <zlib.h>
-
-#define ZMBV_KEYFRAME 1
-#define ZMBV_DELTAPAL 2
-
-#define ZMBV_BLOCK 16
-
-/**
- * Encoder context
- */
-typedef struct ZmbvEncContext {
- AVCodecContext *avctx;
- AVFrame pic;
-
- int range;
- uint8_t *comp_buf, *work_buf;
- uint8_t pal[768];
- uint32_t pal2[256]; //for quick comparisons
- uint8_t *prev;
- int pstride;
- int comp_size;
- int keyint, curfrm;
- z_stream zstream;
-} ZmbvEncContext;
-
-/** Block comparing function
- * XXX should be optimized and moved to DSPContext
- * TODO handle out of edge ME
- */
-static inline int block_cmp(uint8_t *src, int stride, uint8_t *src2, int stride2, int bw, int bh)
-{
- int sum = 0;
- int i, j;
-
- for(j = 0; j < bh; j++){
- for(i = 0; i < bw; i++)
- sum += src[i] ^ src2[i];
- src += stride;
- src2 += stride2;
- }
- return sum;
-}
-
-/** Motion estimation function
- * TODO make better ME decisions
- */
-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, bw, bh;
-
- *mx = *my = 0;
- 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 - 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, bw, bh);
- if(tv < bv){
- bv = tv;
- *mx = dx;
- *my = dy;
- if(!bv) return 0;
- }
- }
- }
- return bv;
-}
-
-static int encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
-{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
- AVFrame *pict = data;
- AVFrame * const p = &c->pic;
- uint8_t *src, *prev;
- uint32_t *palptr;
- int zret = Z_OK;
- int len = 0;
- int keyframe, chpal;
- int fl;
- int work_size = 0;
- int bw, bh;
- int i, j;
-
- keyframe = !c->curfrm;
- c->curfrm++;
- if(c->curfrm == c->keyint)
- c->curfrm = 0;
- *p = *pict;
- p->pict_type= keyframe ? FF_I_TYPE : FF_P_TYPE;
- p->key_frame= keyframe;
- chpal = !keyframe && memcmp(p->data[1], c->pal2, 1024);
-
- fl = (keyframe ? ZMBV_KEYFRAME : 0) | (chpal ? ZMBV_DELTAPAL : 0);
- *buf++ = fl; len++;
- if(keyframe){
- deflateReset(&c->zstream);
- *buf++ = 0; len++; // hi ver
- *buf++ = 1; len++; // lo ver
- *buf++ = 1; len++; // comp
- *buf++ = 4; len++; // format - 8bpp
- *buf++ = ZMBV_BLOCK; len++; // block width
- *buf++ = ZMBV_BLOCK; len++; // block height
- }
- palptr = (uint32_t*)p->data[1];
- src = p->data[0];
- prev = c->prev;
- 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];
- 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];
- c->pal[i * 3 + 0] = tpal[0];
- c->pal[i * 3 + 1] = tpal[1];
- c->pal[i * 3 + 2] = tpal[2];
- }
- memcpy(c->pal2, p->data[1], 1024);
- }
- 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];
- }
- memcpy(c->work_buf, c->pal, 768);
- memcpy(c->pal2, p->data[1], 1024);
- work_size = 768;
- for(i = 0; i < avctx->height; i++){
- memcpy(c->work_buf + work_size, src, avctx->width);
- src += p->linesize[0];
- work_size += avctx->width;
- }
- }else{
- int x, y, bh2, bw2;
- uint8_t *tsrc, *tprev;
- uint8_t *mv;
- int mx, my, bv;
-
- bw = (avctx->width + ZMBV_BLOCK - 1) / ZMBV_BLOCK;
- bh = (avctx->height + ZMBV_BLOCK - 1) / ZMBV_BLOCK;
- mv = c->work_buf + work_size;
- memset(c->work_buf + work_size, 0, (bw * bh * 2 + 3) & ~3);
- work_size += (bw * bh * 2 + 3) & ~3;
- /* for now just XOR'ing */
- for(y = 0; y < avctx->height; y += ZMBV_BLOCK) {
- bh2 = FFMIN(avctx->height - y, ZMBV_BLOCK);
- for(x = 0; x < avctx->width; x += ZMBV_BLOCK, mv += 2) {
- bw2 = FFMIN(avctx->width - x, ZMBV_BLOCK);
-
- tsrc = src + x;
- tprev = prev + x;
-
- bv = zmbv_me(c, tsrc, p->linesize[0], tprev, c->pstride, x, y, &mx, &my);
- mv[0] = (mx << 1) | !!bv;
- mv[1] = my << 1;
- tprev += mx + my * c->pstride;
- if(bv){
- for(j = 0; j < bh2; j++){
- for(i = 0; i < bw2; i++)
- c->work_buf[work_size++] = tsrc[i] ^ tprev[i];
- tsrc += p->linesize[0];
- tprev += c->pstride;
- }
- }
- }
- src += p->linesize[0] * ZMBV_BLOCK;
- prev += c->pstride * ZMBV_BLOCK;
- }
- }
- /* save the previous frame */
- src = p->data[0];
- prev = c->prev;
- for(i = 0; i < avctx->height; i++){
- memcpy(prev, src, avctx->width);
- prev += c->pstride;
- src += p->linesize[0];
- }
-
- c->zstream.next_in = c->work_buf;
- c->zstream.avail_in = work_size;
- c->zstream.total_in = 0;
-
- c->zstream.next_out = c->comp_buf;
- c->zstream.avail_out = c->comp_size;
- c->zstream.total_out = 0;
- if((zret = deflate(&c->zstream, Z_SYNC_FLUSH)) != Z_OK){
- av_log(avctx, AV_LOG_ERROR, "Error compressing data\n");
- return -1;
- }
-
- memcpy(buf, c->comp_buf, c->zstream.total_out);
- return len + c->zstream.total_out;
-}
-
-
-/**
- * Init zmbv encoder
- */
-static int encode_init(AVCodecContext *avctx)
-{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
- int zret; // Zlib return code
- int lvl = 9;
-
- c->avctx = avctx;
-
- c->pic.data[0] = NULL;
- c->curfrm = 0;
- c->keyint = avctx->keyint_min;
- c->range = 8;
- if(avctx->me_range > 0)
- c->range = FFMIN(avctx->me_range, 127);
-
- if(avctx->compression_level >= 0)
- lvl = avctx->compression_level;
- if(lvl < 0 || lvl > 9){
- av_log(avctx, AV_LOG_ERROR, "Compression level should be 0-9, not %i\n", lvl);
- return -1;
- }
-
- if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
- return -1;
- }
-
- // Needed if zlib unused or init aborted before deflateInit
- memset(&(c->zstream), 0, sizeof(z_stream));
- c->comp_size = avctx->width * avctx->height + 1024 +
- ((avctx->width + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * ((avctx->height + ZMBV_BLOCK - 1) / ZMBV_BLOCK) * 2 + 4;
- if ((c->work_buf = av_malloc(c->comp_size)) == NULL) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate work buffer.\n");
- return -1;
- }
- /* Conservative upper bound taken from zlib v1.2.1 source via lcl.c */
- c->comp_size = c->comp_size + ((c->comp_size + 7) >> 3) +
- ((c->comp_size + 63) >> 6) + 11;
-
- /* Allocate compression buffer */
- if ((c->comp_buf = av_malloc(c->comp_size)) == NULL) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate compression buffer.\n");
- return -1;
- }
- c->pstride = (avctx->width + 15) & ~15;
- if ((c->prev = av_malloc(c->pstride * avctx->height)) == NULL) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate picture.\n");
- return -1;
- }
-
- c->zstream.zalloc = Z_NULL;
- c->zstream.zfree = Z_NULL;
- c->zstream.opaque = Z_NULL;
- zret = deflateInit(&(c->zstream), lvl);
- if (zret != Z_OK) {
- av_log(avctx, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
- return -1;
- }
-
- return 0;
-}
-
-
-
-/**
- * Uninit zmbv encoder
- */
-static int encode_end(AVCodecContext *avctx)
-{
- ZmbvEncContext * const c = (ZmbvEncContext *)avctx->priv_data;
-
- av_freep(&c->comp_buf);
- av_freep(&c->work_buf);
-
- deflateEnd(&(c->zstream));
- av_freep(&c->prev);
-
- return 0;
-}
-
-AVCodec zmbv_encoder = {
- "zmbv",
- CODEC_TYPE_VIDEO,
- CODEC_ID_ZMBV,
- sizeof(ZmbvEncContext),
- encode_init,
- encode_frame,
- encode_end,
- .pix_fmts = (enum PixelFormat[]){PIX_FMT_PAL8, -1},
-};
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