diff options
Diffstat (limited to 'libavcodec/targa.c')
| -rw-r--r-- | libavcodec/targa.c | 58 |
1 files changed, 42 insertions, 16 deletions
diff --git a/libavcodec/targa.c b/libavcodec/targa.c index b821d74f8d..f60524dc84 100644 --- a/libavcodec/targa.c +++ b/libavcodec/targa.c @@ -2,26 +2,27 @@ * Targa (.tga) image decoder * Copyright (c) 2006 Konstantin Shishkov * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" #include "avcodec.h" +#include "bytestream.h" #include "targa.h" typedef struct TargaContext { @@ -108,21 +109,26 @@ static int decode_frame(AVCodecContext *avctx, AVFrame * const p= (AVFrame*)&s->picture; uint8_t *dst; int stride; - int idlen, compr, y, w, h, bpp, flags; + int idlen, pal, compr, y, w, h, bpp, flags; int first_clr, colors, csize; /* parse image header */ CHECK_BUFFER_SIZE(buf, buf_end, 18, "header"); idlen = *buf++; - buf++; /* pal */ + pal = *buf++; compr = *buf++; - first_clr = AV_RL16(buf); buf += 2; - colors = AV_RL16(buf); buf += 2; + first_clr = bytestream_get_le16(&buf); + colors = bytestream_get_le16(&buf); csize = *buf++; + if (!pal && (first_clr || colors || csize)) { + av_log(avctx, AV_LOG_WARNING, "File without colormap has colormap information set.\n"); + // specification says we should ignore those value in this case + first_clr = colors = csize = 0; + } buf += 2; /* x */ - y = AV_RL16(buf); buf += 2; - w = AV_RL16(buf); buf += 2; - h = AV_RL16(buf); buf += 2; + y = bytestream_get_le16(&buf); + w = bytestream_get_le16(&buf); + h = bytestream_get_le16(&buf); bpp = *buf++; flags = *buf++; //skip identifier if any @@ -186,13 +192,10 @@ static int decode_frame(AVCodecContext *avctx, if(avctx->pix_fmt != PIX_FMT_PAL8)//should not occur but skip palette anyway buf += pal_size; else{ - int r, g, b, t; + int 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; + *pal++ = (0xff<<24) | bytestream_get_le24(&buf); } p->palette_has_changed = 1; } @@ -228,6 +231,29 @@ static int decode_frame(AVCodecContext *avctx, } } } + if(flags & 0x10){ // right-to-left, needs horizontal flip + int x; + for(y = 0; y < s->height; y++){ + void *line = &p->data[0][y * p->linesize[0]]; + for(x = 0; x < s->width >> 1; x++){ + switch(s->bpp){ + case 32: + FFSWAP(uint32_t, ((uint32_t *)line)[x], ((uint32_t *)line)[s->width - x]); + break; + case 24: + FFSWAP(uint8_t, ((uint8_t *)line)[3 * x ], ((uint8_t *)line)[3 * s->width - 3 * x ]); + FFSWAP(uint8_t, ((uint8_t *)line)[3 * x + 1], ((uint8_t *)line)[3 * s->width - 3 * x + 1]); + FFSWAP(uint8_t, ((uint8_t *)line)[3 * x + 2], ((uint8_t *)line)[3 * s->width - 3 * x + 2]); + break; + case 16: + FFSWAP(uint16_t, ((uint16_t *)line)[x], ((uint16_t *)line)[s->width - x]); + break; + case 8: + FFSWAP(uint8_t, ((uint8_t *)line)[x], ((uint8_t *)line)[s->width - x]); + } + } + } + } *picture= *(AVFrame*)&s->picture; *data_size = sizeof(AVPicture); |