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Diffstat (limited to 'src/libffmpeg/libavcodec/cscd.c')
-rw-r--r--src/libffmpeg/libavcodec/cscd.c264
1 files changed, 0 insertions, 264 deletions
diff --git a/src/libffmpeg/libavcodec/cscd.c b/src/libffmpeg/libavcodec/cscd.c
deleted file mode 100644
index d8733d6dd..000000000
--- a/src/libffmpeg/libavcodec/cscd.c
+++ /dev/null
@@ -1,264 +0,0 @@
-/*
- * CamStudio decoder
- * Copyright (c) 2006 Reimar Doeffinger
- *
- * 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
- */
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "common.h"
-#include "avcodec.h"
-
-#ifdef CONFIG_ZLIB
-#include <zlib.h>
-#endif
-#include "lzo.h"
-
-typedef struct {
- AVFrame pic;
- int linelen, height, bpp;
- unsigned int decomp_size;
- unsigned char* decomp_buf;
-} CamStudioContext;
-
-static void copy_frame_default(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- memcpy(dst, src, linelen);
- src += linelen;
- dst -= f->linesize[0];
- }
-}
-
-static void add_frame_default(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i, j;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- for (j = linelen; j; j--)
- *dst++ += *src++;
- dst -= f->linesize[0] + linelen;
- }
-}
-
-#ifndef WORDS_BIGENDIAN
-#define copy_frame_16 copy_frame_default
-#define copy_frame_32 copy_frame_default
-#define add_frame_16 add_frame_default
-#define add_frame_32 add_frame_default
-#else
-static void copy_frame_16(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i, j;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- for (j = linelen / 2; j; j--) {
- dst[0] = src[1];
- dst[1] = src[0];
- src += 2;
- dst += 2;
- }
- dst -= f->linesize[0] + linelen;
- }
-}
-
-static void copy_frame_32(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i, j;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- for (j = linelen / 4; j; j--) {
- dst[0] = src[3];
- dst[1] = src[2];
- dst[2] = src[1];
- dst[3] = src[0];
- src += 4;
- dst += 4;
- }
- dst -= f->linesize[0] + linelen;
- }
-}
-
-static void add_frame_16(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i, j;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- for (j = linelen / 2; j; j--) {
- dst[0] += src[1];
- dst[1] += src[0];
- src += 2;
- dst += 2;
- }
- dst -= f->linesize[0] + linelen;
- }
-}
-
-static void add_frame_32(AVFrame *f, uint8_t *src,
- int linelen, int height) {
- int i, j;
- uint8_t *dst = f->data[0];
- dst += (height - 1) * f->linesize[0];
- for (i = height; i; i--) {
- for (j = linelen / 4; j; j--) {
- dst[0] += src[3];
- dst[1] += src[2];
- dst[2] += src[1];
- dst[3] += src[0];
- src += 4;
- dst += 4;
- }
- dst -= f->linesize[0] + linelen;
- }
-}
-#endif
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- uint8_t *buf, int buf_size) {
- CamStudioContext *c = (CamStudioContext *)avctx->priv_data;
- AVFrame *picture = data;
-
- if (buf_size < 2) {
- av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
- return -1;
- }
-
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
- c->pic.reference = 1;
- c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
- FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->get_buffer(avctx, &c->pic) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- // decompress data
- switch ((buf[0] >> 1) & 7) {
- case 0: { // lzo compression
- int outlen = c->decomp_size, inlen = buf_size - 2;
- if (lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen))
- av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
- break;
- }
- case 1: { // zlib compression
-#ifdef CONFIG_ZLIB
- unsigned long dlen = c->decomp_size;
- if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK)
- av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n");
- break;
-#else
- av_log(avctx, AV_LOG_ERROR, "compiled without zlib support\n");
- return -1;
-#endif
- }
- default:
- av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
- return -1;
- }
-
- // flip upside down, add difference frame
- if (buf[0] & 1) { // keyframe
- c->pic.pict_type = FF_I_TYPE;
- c->pic.key_frame = 1;
- switch (c->bpp) {
- case 16:
- copy_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
- break;
- case 32:
- copy_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
- break;
- default:
- copy_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
- }
- } else {
- c->pic.pict_type = FF_P_TYPE;
- c->pic.key_frame = 0;
- switch (c->bpp) {
- case 16:
- add_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
- break;
- case 32:
- add_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
- break;
- default:
- add_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
- }
- }
-
- *picture = c->pic;
- *data_size = sizeof(AVFrame);
- return buf_size;
-}
-
-static int decode_init(AVCodecContext *avctx) {
- CamStudioContext *c = (CamStudioContext *)avctx->priv_data;
- if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0) {
- return 1;
- }
- avctx->has_b_frames = 0;
- switch (avctx->bits_per_sample) {
- case 16: avctx->pix_fmt = PIX_FMT_RGB555; break;
- case 24: avctx->pix_fmt = PIX_FMT_BGR24; break;
- case 32: avctx->pix_fmt = PIX_FMT_RGBA32; break;
- default:
- av_log(avctx, AV_LOG_ERROR,
- "CamStudio codec error: invalid depth %i bpp\n",
- avctx->bits_per_sample);
- return 1;
- }
- c->bpp = avctx->bits_per_sample;
- c->pic.data[0] = NULL;
- c->linelen = avctx->width * avctx->bits_per_sample / 8;
- c->height = avctx->height;
- c->decomp_size = c->height * c->linelen;
- c->decomp_buf = av_malloc(c->decomp_size + LZO_OUTPUT_PADDING);
- if (!c->decomp_buf) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return 1;
- }
- return 0;
-}
-
-static int decode_end(AVCodecContext *avctx) {
- CamStudioContext *c = (CamStudioContext *)avctx->priv_data;
- av_freep(&c->decomp_buf);
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
- return 0;
-}
-
-AVCodec cscd_decoder = {
- "camstudio",
- CODEC_TYPE_VIDEO,
- CODEC_ID_CSCD,
- sizeof(CamStudioContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
-};
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 13:58:13 +0000