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Diffstat (limited to 'contrib/ffmpeg/libavcodec/zmbv.c')
-rw-r--r--contrib/ffmpeg/libavcodec/zmbv.c691
1 files changed, 0 insertions, 691 deletions
diff --git a/contrib/ffmpeg/libavcodec/zmbv.c b/contrib/ffmpeg/libavcodec/zmbv.c
deleted file mode 100644
index 89b8418c5..000000000
--- a/contrib/ffmpeg/libavcodec/zmbv.c
+++ /dev/null
@@ -1,691 +0,0 @@
-/*
- * Zip Motion Blocks Video (ZMBV) decoder
- * 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 zmbv.c
- * Zip Motion Blocks Video decoder
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "common.h"
-#include "avcodec.h"
-
-#ifdef CONFIG_ZLIB
-#include <zlib.h>
-#endif
-
-#define ZMBV_KEYFRAME 1
-#define ZMBV_DELTAPAL 2
-
-enum ZmbvFormat {
- ZMBV_FMT_NONE = 0,
- ZMBV_FMT_1BPP = 1,
- ZMBV_FMT_2BPP = 2,
- ZMBV_FMT_4BPP = 3,
- ZMBV_FMT_8BPP = 4,
- ZMBV_FMT_15BPP = 5,
- ZMBV_FMT_16BPP = 6,
- ZMBV_FMT_24BPP = 7,
- ZMBV_FMT_32BPP = 8
-};
-
-/*
- * Decoder context
- */
-typedef struct ZmbvContext {
- AVCodecContext *avctx;
- AVFrame pic;
-
- int bpp;
- unsigned int decomp_size;
- uint8_t* decomp_buf;
- uint8_t pal[768];
- uint8_t *prev, *cur;
- int width, height;
- int fmt;
- int comp;
- int flags;
- int bw, bh, bx, by;
- int decomp_len;
-#ifdef CONFIG_ZLIB
- z_stream zstream;
-#endif
- int (*decode_intra)(struct ZmbvContext *c);
- int (*decode_xor)(struct ZmbvContext *c);
-} ZmbvContext;
-
-/**
- * Decode XOR'ed frame - 8bpp version
- */
-
-static int zmbv_decode_xor_8(ZmbvContext *c)
-{
- uint8_t *src = c->decomp_buf;
- uint8_t *output, *prev;
- int8_t *mvec;
- int x, y;
- int d, dx, dy, bw2, bh2;
- int block;
- int i, j;
- int mx, my;
-
- output = c->cur;
- prev = c->prev;
-
- if(c->flags & ZMBV_DELTAPAL){
- for(i = 0; i < 768; i++)
- c->pal[i] ^= *src++;
- }
-
- mvec = (int8_t*)src;
- src += ((c->bx * c->by * 2 + 3) & ~3);
-
- block = 0;
- for(y = 0; y < c->height; y += c->bh) {
- bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
- for(x = 0; x < c->width; x += c->bw) {
- uint8_t *out, *tprev;
-
- d = mvec[block] & 1;
- dx = mvec[block] >> 1;
- dy = mvec[block + 1] >> 1;
- block += 2;
-
- bw2 = ((c->width - x) > c->bw) ? c->bw : (c->width - x);
-
- /* copy block - motion vectors out of bounds are used to zero blocks */
- out = output + x;
- tprev = prev + x + dx + dy * c->width;
- mx = x + dx;
- my = y + dy;
- for(j = 0; j < bh2; j++){
- if((my + j < 0) || (my + j >= c->height)) {
- memset(out, 0, bw2);
- } else {
- for(i = 0; i < bw2; i++){
- if((mx + i < 0) || (mx + i >= c->width))
- out[i] = 0;
- else
- out[i] = tprev[i];
- }
- }
- out += c->width;
- tprev += c->width;
- }
-
- if(d) { /* apply XOR'ed difference */
- out = output + x;
- for(j = 0; j < bh2; j++){
- for(i = 0; i < bw2; i++)
- out[i] ^= *src++;
- out += c->width;
- }
- }
- }
- output += c->width * c->bh;
- prev += c->width * c->bh;
- }
- if(src - c->decomp_buf != c->decomp_len)
- av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n", src-c->decomp_buf, c->decomp_len);
- return 0;
-}
-
-/**
- * Decode XOR'ed frame - 15bpp and 16bpp version
- */
-
-static int zmbv_decode_xor_16(ZmbvContext *c)
-{
- uint8_t *src = c->decomp_buf;
- uint16_t *output, *prev;
- int8_t *mvec;
- int x, y;
- int d, dx, dy, bw2, bh2;
- int block;
- int i, j;
- int mx, my;
-
- output = (uint16_t*)c->cur;
- prev = (uint16_t*)c->prev;
-
- mvec = (int8_t*)src;
- src += ((c->bx * c->by * 2 + 3) & ~3);
-
- block = 0;
- for(y = 0; y < c->height; y += c->bh) {
- bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
- for(x = 0; x < c->width; x += c->bw) {
- uint16_t *out, *tprev;
-
- d = mvec[block] & 1;
- dx = mvec[block] >> 1;
- dy = mvec[block + 1] >> 1;
- block += 2;
-
- bw2 = ((c->width - x) > c->bw) ? c->bw : (c->width - x);
-
- /* copy block - motion vectors out of bounds are used to zero blocks */
- out = output + x;
- tprev = prev + x + dx + dy * c->width;
- mx = x + dx;
- my = y + dy;
- for(j = 0; j < bh2; j++){
- if((my + j < 0) || (my + j >= c->height)) {
- memset(out, 0, bw2 * 2);
- } else {
- for(i = 0; i < bw2; i++){
- if((mx + i < 0) || (mx + i >= c->width))
- out[i] = 0;
- else
- out[i] = tprev[i];
- }
- }
- out += c->width;
- tprev += c->width;
- }
-
- if(d) { /* apply XOR'ed difference */
- out = output + x;
- for(j = 0; j < bh2; j++){
- for(i = 0; i < bw2; i++) {
- out[i] ^= *((uint16_t*)src);
- src += 2;
- }
- out += c->width;
- }
- }
- }
- output += c->width * c->bh;
- prev += c->width * c->bh;
- }
- if(src - c->decomp_buf != c->decomp_len)
- av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n", src-c->decomp_buf, c->decomp_len);
- return 0;
-}
-
-#ifdef ZMBV_ENABLE_24BPP
-/**
- * Decode XOR'ed frame - 24bpp version
- */
-
-static int zmbv_decode_xor_24(ZmbvContext *c)
-{
- uint8_t *src = c->decomp_buf;
- uint8_t *output, *prev;
- int8_t *mvec;
- int x, y;
- int d, dx, dy, bw2, bh2;
- int block;
- int i, j;
- int mx, my;
- int stride;
-
- output = c->cur;
- prev = c->prev;
-
- stride = c->width * 3;
- mvec = (int8_t*)src;
- src += ((c->bx * c->by * 2 + 3) & ~3);
-
- block = 0;
- for(y = 0; y < c->height; y += c->bh) {
- bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
- for(x = 0; x < c->width; x += c->bw) {
- uint8_t *out, *tprev;
-
- d = mvec[block] & 1;
- dx = mvec[block] >> 1;
- dy = mvec[block + 1] >> 1;
- block += 2;
-
- bw2 = ((c->width - x) > c->bw) ? c->bw : (c->width - x);
-
- /* copy block - motion vectors out of bounds are used to zero blocks */
- out = output + x * 3;
- tprev = prev + (x + dx) * 3 + dy * stride;
- mx = x + dx;
- my = y + dy;
- for(j = 0; j < bh2; j++){
- if((my + j < 0) || (my + j >= c->height)) {
- memset(out, 0, bw2 * 3);
- } else {
- for(i = 0; i < bw2; i++){
- if((mx + i < 0) || (mx + i >= c->width)) {
- out[i * 3 + 0] = 0;
- out[i * 3 + 1] = 0;
- out[i * 3 + 2] = 0;
- } else {
- out[i * 3 + 0] = tprev[i * 3 + 0];
- out[i * 3 + 1] = tprev[i * 3 + 1];
- out[i * 3 + 2] = tprev[i * 3 + 2];
- }
- }
- }
- out += stride;
- tprev += stride;
- }
-
- if(d) { /* apply XOR'ed difference */
- out = output + x * 3;
- for(j = 0; j < bh2; j++){
- for(i = 0; i < bw2; i++) {
- out[i * 3 + 0] ^= *src++;
- out[i * 3 + 1] ^= *src++;
- out[i * 3 + 2] ^= *src++;
- }
- out += stride;
- }
- }
- }
- output += stride * c->bh;
- prev += stride * c->bh;
- }
- if(src - c->decomp_buf != c->decomp_len)
- av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n", src-c->decomp_buf, c->decomp_len);
- return 0;
-}
-#endif //ZMBV_ENABLE_24BPP
-
-/**
- * Decode XOR'ed frame - 32bpp version
- */
-
-static int zmbv_decode_xor_32(ZmbvContext *c)
-{
- uint8_t *src = c->decomp_buf;
- uint32_t *output, *prev;
- int8_t *mvec;
- int x, y;
- int d, dx, dy, bw2, bh2;
- int block;
- int i, j;
- int mx, my;
-
- output = (uint32_t*)c->cur;
- prev = (uint32_t*)c->prev;
-
- mvec = (int8_t*)src;
- src += ((c->bx * c->by * 2 + 3) & ~3);
-
- block = 0;
- for(y = 0; y < c->height; y += c->bh) {
- bh2 = ((c->height - y) > c->bh) ? c->bh : (c->height - y);
- for(x = 0; x < c->width; x += c->bw) {
- uint32_t *out, *tprev;
-
- d = mvec[block] & 1;
- dx = mvec[block] >> 1;
- dy = mvec[block + 1] >> 1;
- block += 2;
-
- bw2 = ((c->width - x) > c->bw) ? c->bw : (c->width - x);
-
- /* copy block - motion vectors out of bounds are used to zero blocks */
- out = output + x;
- tprev = prev + x + dx + dy * c->width;
- mx = x + dx;
- my = y + dy;
- for(j = 0; j < bh2; j++){
- if((my + j < 0) || (my + j >= c->height)) {
- memset(out, 0, bw2 * 4);
- } else {
- for(i = 0; i < bw2; i++){
- if((mx + i < 0) || (mx + i >= c->width))
- out[i] = 0;
- else
- out[i] = tprev[i];
- }
- }
- out += c->width;
- tprev += c->width;
- }
-
- if(d) { /* apply XOR'ed difference */
- out = output + x;
- for(j = 0; j < bh2; j++){
- for(i = 0; i < bw2; i++) {
- out[i] ^= *((uint32_t*)src);
- src += 4;
- }
- out += c->width;
- }
- }
- }
- output += c->width * c->bh;
- prev += c->width * c->bh;
- }
- if(src - c->decomp_buf != c->decomp_len)
- av_log(c->avctx, AV_LOG_ERROR, "Used %i of %i bytes\n", src-c->decomp_buf, c->decomp_len);
- return 0;
-}
-
-/**
- * Decode intraframe
- */
-static int zmbv_decode_intra(ZmbvContext *c)
-{
- uint8_t *src = c->decomp_buf;
-
- /* make the palette available on the way out */
- if (c->fmt == ZMBV_FMT_8BPP) {
- memcpy(c->pal, src, 768);
- src += 768;
- }
-
- memcpy(c->cur, src, c->width * c->height * (c->bpp / 8));
- return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
-{
- ZmbvContext * const c = (ZmbvContext *)avctx->priv_data;
- uint8_t *outptr;
-#ifdef CONFIG_ZLIB
- int zret = Z_OK; // Zlib return code
-#endif
- int len = buf_size;
- int hi_ver, lo_ver;
-
- if(c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
-
- c->pic.reference = 1;
- c->pic.buffer_hints = FF_BUFFER_HINTS_VALID;
- if(avctx->get_buffer(avctx, &c->pic) < 0){
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- outptr = c->pic.data[0]; // Output image pointer
-
- /* parse header */
- c->flags = buf[0];
- buf++; len--;
- if(c->flags & ZMBV_KEYFRAME) {
- hi_ver = buf[0];
- lo_ver = buf[1];
- c->comp = buf[2];
- c->fmt = buf[3];
- c->bw = buf[4];
- c->bh = buf[5];
-
- buf += 6;
- len -= 6;
- av_log(avctx, AV_LOG_DEBUG, "Flags=%X ver=%i.%i comp=%i fmt=%i blk=%ix%i\n",c->flags,hi_ver,lo_ver,c->comp,c->fmt,c->bw,c->bh);
- if(hi_ver != 0 || lo_ver != 1) {
- av_log(avctx, AV_LOG_ERROR, "Unsupported version %i.%i\n", hi_ver, lo_ver);
- return -1;
- }
- if(c->bw == 0 || c->bh == 0) {
- av_log(avctx, AV_LOG_ERROR, "Unsupported block size %ix%i\n", c->bw, c->bh);
- }
- if(c->comp != 0 && c->comp != 1) {
- av_log(avctx, AV_LOG_ERROR, "Unsupported compression type %i\n", c->comp);
- return -1;
- }
-
- switch(c->fmt) {
- case ZMBV_FMT_8BPP:
- c->bpp = 8;
- c->decode_intra = zmbv_decode_intra;
- c->decode_xor = zmbv_decode_xor_8;
- break;
- case ZMBV_FMT_15BPP:
- case ZMBV_FMT_16BPP:
- c->bpp = 16;
- c->decode_intra = zmbv_decode_intra;
- c->decode_xor = zmbv_decode_xor_16;
- break;
-#ifdef ZMBV_ENABLE_24BPP
- case ZMBV_FMT_24BPP:
- c->bpp = 24;
- c->decode_intra = zmbv_decode_intra;
- c->decode_xor = zmbv_decode_xor_24;
- break;
-#endif //ZMBV_ENABLE_24BPP
- case ZMBV_FMT_32BPP:
- c->bpp = 32;
- c->decode_intra = zmbv_decode_intra;
- c->decode_xor = zmbv_decode_xor_32;
- break;
- default:
- c->decode_intra = NULL;
- c->decode_xor = NULL;
- av_log(avctx, AV_LOG_ERROR, "Unsupported (for now) format %i\n", c->fmt);
- return -1;
- }
-#ifdef CONFIG_ZLIB
- zret = inflateReset(&c->zstream);
- if (zret != Z_OK) {
- av_log(avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", zret);
- return -1;
- }
-#else
- av_log(avctx, AV_LOG_ERROR, "BUG! Zlib support not compiled in frame decoder.\n");
- return -1;
-#endif /* CONFIG_ZLIB */
- c->cur = av_realloc(c->cur, avctx->width * avctx->height * (c->bpp / 8));
- c->prev = av_realloc(c->prev, avctx->width * avctx->height * (c->bpp / 8));
- c->bx = (c->width + c->bw - 1) / c->bw;
- c->by = (c->height+ c->bh - 1) / c->bh;
- }
-
- if(c->decode_intra == NULL) {
- av_log(avctx, AV_LOG_ERROR, "Error! Got no format or no keyframe!\n");
- return -1;
- }
-
- if(c->comp == 0) { //Uncompressed data
- memcpy(c->decomp_buf, buf, len);
- c->decomp_size = 1;
- } else { // ZLIB-compressed data
-#ifdef CONFIG_ZLIB
- c->zstream.total_in = c->zstream.total_out = 0;
- c->zstream.next_in = buf;
- c->zstream.avail_in = len;
- c->zstream.next_out = c->decomp_buf;
- c->zstream.avail_out = c->decomp_size;
- inflate(&c->zstream, Z_FINISH);
- c->decomp_len = c->zstream.total_out;
-#else
- av_log(avctx, AV_LOG_ERROR, "BUG! Zlib support not compiled in frame decoder.\n");
- return -1;
-#endif
- }
- if(c->flags & ZMBV_KEYFRAME) {
- c->pic.key_frame = 1;
- c->pic.pict_type = FF_I_TYPE;
- c->decode_intra(c);
- } else {
- c->pic.key_frame = 0;
- c->pic.pict_type = FF_P_TYPE;
- c->decode_xor(c);
- }
-
- /* update frames */
- {
- uint8_t *out, *src;
- int i, j;
-
- out = c->pic.data[0];
- src = c->cur;
- switch(c->fmt) {
- case ZMBV_FMT_8BPP:
- for(j = 0; j < c->height; j++) {
- for(i = 0; i < c->width; i++) {
- out[i * 3 + 0] = c->pal[(*src) * 3 + 0];
- out[i * 3 + 1] = c->pal[(*src) * 3 + 1];
- out[i * 3 + 2] = c->pal[(*src) * 3 + 2];
- *src++;
- }
- out += c->pic.linesize[0];
- }
- break;
- case ZMBV_FMT_15BPP:
- for(j = 0; j < c->height; j++) {
- for(i = 0; i < c->width; i++) {
- uint16_t tmp = AV_RL16(src);
- src += 2;
- out[i * 3 + 0] = (tmp & 0x7C00) >> 7;
- out[i * 3 + 1] = (tmp & 0x03E0) >> 2;
- out[i * 3 + 2] = (tmp & 0x001F) << 3;
- }
- out += c->pic.linesize[0];
- }
- break;
- case ZMBV_FMT_16BPP:
- for(j = 0; j < c->height; j++) {
- for(i = 0; i < c->width; i++) {
- uint16_t tmp = AV_RL16(src);
- src += 2;
- out[i * 3 + 0] = (tmp & 0xF800) >> 8;
- out[i * 3 + 1] = (tmp & 0x07E0) >> 3;
- out[i * 3 + 2] = (tmp & 0x001F) << 3;
- }
- out += c->pic.linesize[0];
- }
- break;
-#ifdef ZMBV_ENABLE_24BPP
- case ZMBV_FMT_24BPP:
- for(j = 0; j < c->height; j++) {
- memcpy(out, src, c->width * 3);
- src += c->width * 3;
- out += c->pic.linesize[0];
- }
- break;
-#endif //ZMBV_ENABLE_24BPP
- case ZMBV_FMT_32BPP:
- for(j = 0; j < c->height; j++) {
- for(i = 0; i < c->width; i++) {
- uint32_t tmp = AV_RL32(src);
- src += 4;
- out[i * 3 + 0] = tmp >> 16;
- out[i * 3 + 1] = tmp >> 8;
- out[i * 3 + 2] = tmp >> 0;
- }
- out += c->pic.linesize[0];
- }
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "Cannot handle format %i\n", c->fmt);
- }
- memcpy(c->prev, c->cur, c->width * c->height * (c->bpp / 8));
- }
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = c->pic;
-
- /* always report that the buffer was completely consumed */
- return buf_size;
-}
-
-
-
-/*
- *
- * Init zmbv decoder
- *
- */
-static int decode_init(AVCodecContext *avctx)
-{
- ZmbvContext * const c = (ZmbvContext *)avctx->priv_data;
- int zret; // Zlib return code
-
- c->avctx = avctx;
-
- c->pic.data[0] = NULL;
- c->width = avctx->width;
- c->height = avctx->height;
-
- if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
- return 1;
- }
- c->bpp = avctx->bits_per_sample;
-
-#ifdef CONFIG_ZLIB
- // Needed if zlib unused or init aborted before inflateInit
- memset(&(c->zstream), 0, sizeof(z_stream));
-#else
- av_log(avctx, AV_LOG_ERROR, "Zlib support not compiled.\n");
- return 1;
-#endif
- avctx->pix_fmt = PIX_FMT_RGB24;
- c->decomp_size = (avctx->width + 255) * 4 * (avctx->height + 64);
-
- /* Allocate decompression buffer */
- if (c->decomp_size) {
- if ((c->decomp_buf = av_malloc(c->decomp_size)) == NULL) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return 1;
- }
- }
-
-#ifdef CONFIG_ZLIB
- c->zstream.zalloc = Z_NULL;
- c->zstream.zfree = Z_NULL;
- c->zstream.opaque = Z_NULL;
- zret = inflateInit(&(c->zstream));
- if (zret != Z_OK) {
- av_log(avctx, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
- return 1;
- }
-#endif
-
- return 0;
-}
-
-
-
-/*
- *
- * Uninit zmbv decoder
- *
- */
-static int decode_end(AVCodecContext *avctx)
-{
- ZmbvContext * const c = (ZmbvContext *)avctx->priv_data;
-
- av_freep(&c->decomp_buf);
-
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
-#ifdef CONFIG_ZLIB
- inflateEnd(&(c->zstream));
-#endif
- av_freep(&c->cur);
- av_freep(&c->prev);
-
- return 0;
-}
-
-AVCodec zmbv_decoder = {
- "zmbv",
- CODEC_TYPE_VIDEO,
- CODEC_ID_ZMBV,
- sizeof(ZmbvContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame
-};
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 09:15:31 +0000