summaryrefslogtreecommitdiff
path: root/contrib/ffmpeg/libavcodec/targa.c
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/ffmpeg/libavcodec/targa.c')
-rw-r--r--contrib/ffmpeg/libavcodec/targa.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/contrib/ffmpeg/libavcodec/targa.c b/contrib/ffmpeg/libavcodec/targa.c
deleted file mode 100644
index d637bedae..000000000
--- a/contrib/ffmpeg/libavcodec/targa.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * Targa (.tga) image 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
- *
- */
-#include "avcodec.h"
-
-enum TargaCompr{
- TGA_NODATA = 0, // no image data
- TGA_PAL = 1, // palettized
- TGA_RGB = 2, // true-color
- TGA_BW = 3, // black & white or grayscale
- TGA_RLE = 8, // flag pointing that data is RLE-coded
-};
-
-typedef struct TargaContext {
- AVFrame picture;
-
- int width, height;
- int bpp;
- int color_type;
- int compression_type;
-} TargaContext;
-
-static void targa_decode_rle(AVCodecContext *avctx, TargaContext *s, uint8_t *src, uint8_t *dst, int w, int h, int stride, int bpp)
-{
- int i, x, y;
- int depth = (bpp + 1) >> 3;
- int type, count;
- int diff;
-
- diff = stride - w * depth;
- x = y = 0;
- while(y < h){
- type = *src++;
- count = (type & 0x7F) + 1;
- type &= 0x80;
- if((x + count > w) && (x + count + 1 > (h - y) * w)){
- av_log(avctx, AV_LOG_ERROR, "Packet went out of bounds: position (%i,%i) size %i\n", x, y, count);
- return;
- }
- for(i = 0; i < count; i++){
- switch(depth){
- case 1:
- *dst = *src;
- break;
- case 2:
- *((uint16_t*)dst) = AV_RL16(src);
- break;
- case 3:
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- break;
- case 4:
- *((uint32_t*)dst) = AV_RL32(src);
- break;
- }
- dst += depth;
- if(!type)
- src += depth;
-
- x++;
- if(x == w){
- x = 0;
- y++;
- dst += diff;
- }
- }
- if(type)
- src += depth;
- }
-}
-
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- TargaContext * const s = avctx->priv_data;
- AVFrame *picture = data;
- AVFrame * const p= (AVFrame*)&s->picture;
- uint8_t *dst;
- int stride;
- int idlen, pal, compr, x, y, w, h, bpp, flags;
- int first_clr, colors, csize;
-
- /* parse image header */
- idlen = *buf++;
- pal = *buf++;
- compr = *buf++;
- first_clr = AV_RL16(buf); buf += 2;
- colors = AV_RL16(buf); buf += 2;
- csize = *buf++;
- x = AV_RL16(buf); buf += 2;
- y = AV_RL16(buf); buf += 2;
- w = AV_RL16(buf); buf += 2;
- h = AV_RL16(buf); buf += 2;
- bpp = *buf++;
- flags = *buf++;
- //skip identifier if any
- buf += idlen;
- s->bpp = bpp;
- s->width = w;
- s->height = h;
- switch(s->bpp){
- case 8:
- avctx->pix_fmt = ((compr & (~TGA_RLE)) == TGA_BW) ? PIX_FMT_GRAY8 : PIX_FMT_PAL8;
- break;
- case 15:
- avctx->pix_fmt = PIX_FMT_RGB555;
- break;
- 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_RGB32;
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "Bit depth %i is not supported\n", s->bpp);
- return -1;
- }
-
- if(s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
-
- if(avcodec_check_dimensions(avctx, w, h))
- return -1;
- if(w != avctx->width || h != avctx->height)
- avcodec_set_dimensions(avctx, w, h);
- if(avctx->get_buffer(avctx, p) < 0){
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
- if(flags & 0x20){
- dst = p->data[0];
- stride = p->linesize[0];
- }else{ //image is upside-down
- dst = p->data[0] + p->linesize[0] * (h - 1);
- stride = -p->linesize[0];
- }
-
- if(avctx->pix_fmt == PIX_FMT_PAL8 && avctx->palctrl){
- memcpy(p->data[1], avctx->palctrl->palette, AVPALETTE_SIZE);
- if(avctx->palctrl->palette_changed){
- p->palette_has_changed = 1;
- avctx->palctrl->palette_changed = 0;
- }
- }
- if(colors){
- if((colors + first_clr) > 256){
- av_log(avctx, AV_LOG_ERROR, "Incorrect palette: %i colors with offset %i\n", colors, first_clr);
- return -1;
- }
- if(csize != 24){
- av_log(avctx, AV_LOG_ERROR, "Palette entry size %i bits is not supported\n", csize);
- return -1;
- }
- if(avctx->pix_fmt != PIX_FMT_PAL8)//should not occur but skip palette anyway
- buf += colors * ((csize + 1) >> 3);
- else{
- int r, g, b, t;
- int32_t *pal = ((int32_t*)p->data[1]) + first_clr;
- for(t = 0; t < colors; t++){
- r = *buf++;
- g = *buf++;
- b = *buf++;
- *pal++ = (b << 16) | (g << 8) | r;
- }
- p->palette_has_changed = 1;
- avctx->palctrl->palette_changed = 0;
- }
- }
- if((compr & (~TGA_RLE)) == TGA_NODATA)
- memset(p->data[0], 0, p->linesize[0] * s->height);
- else{
- if(compr & TGA_RLE)
- targa_decode_rle(avctx, s, buf, dst, avctx->width, avctx->height, stride, bpp);
- else{
- for(y = 0; y < s->height; y++){
-#ifdef WORDS_BIGENDIAN
- if((s->bpp + 1) >> 3 == 2){
- uint16_t *dst16 = (uint16_t*)dst;
- for(x = 0; x < s->width; x++)
- dst16[x] = AV_RL16(buf + x * 2);
- }else if((s->bpp + 1) >> 3 == 4){
- uint32_t *dst32 = (uint32_t*)dst;
- for(x = 0; x < s->width; x++)
- dst32[x] = AV_RL32(buf + x * 4);
- }else
-#endif
- memcpy(dst, buf, s->width * ((s->bpp + 1) >> 3));
-
- dst += stride;
- buf += s->width * ((s->bpp + 1) >> 3);
- }
- }
- }
-
- *picture= *(AVFrame*)&s->picture;
- *data_size = sizeof(AVPicture);
-
- return buf_size;
-}
-
-static int targa_init(AVCodecContext *avctx){
- TargaContext *s = avctx->priv_data;
-
- avcodec_get_frame_defaults((AVFrame*)&s->picture);
- avctx->coded_frame= (AVFrame*)&s->picture;
- s->picture.data[0] = NULL;
-
- return 0;
-}
-
-static int targa_end(AVCodecContext *avctx){
- TargaContext *s = avctx->priv_data;
-
- if(s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
-
- return 0;
-}
-
-AVCodec targa_decoder = {
- "targa",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TARGA,
- sizeof(TargaContext),
- targa_init,
- NULL,
- targa_end,
- decode_frame,
- 0,
- NULL
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 09:02:30 +0000