diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/sunrast.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/sunrast.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/contrib/ffmpeg/libavcodec/sunrast.c b/contrib/ffmpeg/libavcodec/sunrast.c deleted file mode 100644 index 7e71f21ef..000000000 --- a/contrib/ffmpeg/libavcodec/sunrast.c +++ /dev/null @@ -1,195 +0,0 @@ -/* - * Sun Rasterfile (.sun/.ras/im{1,8,24}/.sunras) image decoder - * Copyright (c) 2007, 2008 Ivo van Poorten - * - * 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" - -#define RT_OLD 0 -#define RT_STANDARD 1 -#define RT_BYTE_ENCODED 2 -#define RT_FORMAT_RGB 3 -#define RT_FORMAT_TIFF 4 -#define RT_FORMAT_IFF 5 - -typedef struct SUNRASTContext { - AVFrame picture; -} SUNRASTContext; - -static int sunrast_init(AVCodecContext *avctx) { - SUNRASTContext *s = avctx->priv_data; - - avcodec_get_frame_defaults(&s->picture); - avctx->coded_frame= &s->picture; - - return 0; -} - -static int sunrast_decode_frame(AVCodecContext *avctx, void *data, - int *data_size, const uint8_t *buf, int buf_size) { - SUNRASTContext * const s = avctx->priv_data; - AVFrame *picture = data; - AVFrame * const p = &s->picture; - unsigned int w, h, depth, type, maptype, maplength, stride, x, y, len, alen; - uint8_t *ptr; - const uint8_t *bufstart = buf; - - if (AV_RB32(buf) != 0x59a66a95) { - av_log(avctx, AV_LOG_ERROR, "this is not sunras encoded data\n"); - return -1; - } - - w = AV_RB32(buf+4); - h = AV_RB32(buf+8); - depth = AV_RB32(buf+12); - type = AV_RB32(buf+20); - maptype = AV_RB32(buf+24); - maplength = AV_RB32(buf+28); - - if (type > RT_BYTE_ENCODED && type <= RT_FORMAT_IFF) { - av_log(avctx, AV_LOG_ERROR, "unsupported (compression) type\n"); - return -1; - } - if (type > RT_FORMAT_IFF) { - av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n"); - return -1; - } - if (maptype & ~1) { - av_log(avctx, AV_LOG_ERROR, "invalid colormap type\n"); - return -1; - } - - buf += 32; - - switch (depth) { - case 1: - avctx->pix_fmt = PIX_FMT_MONOWHITE; - break; - case 8: - avctx->pix_fmt = PIX_FMT_PAL8; - break; - case 24: - avctx->pix_fmt = PIX_FMT_BGR24; - break; - default: - av_log(avctx, AV_LOG_ERROR, "invalid depth\n"); - return -1; - } - - if (p->data[0]) - avctx->release_buffer(avctx, p); - - 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; - } - - p->pict_type = FF_I_TYPE; - - if (depth != 8 && maplength) { - av_log(avctx, AV_LOG_WARNING, "useless colormap found or file is corrupted, trying to recover\n"); - - } else if (depth == 8) { - unsigned int len = maplength / 3; - - if (!maplength) { - av_log(avctx, AV_LOG_ERROR, "colormap expected\n"); - return -1; - } - if (maplength % 3 || maplength > 768) { - av_log(avctx, AV_LOG_WARNING, "invalid colormap length\n"); - return -1; - } - - ptr = p->data[1]; - for (x=0; x<len; x++, ptr+=4) - *(uint32_t *)ptr = (buf[x]<<16) + (buf[len+x]<<8) + buf[len+len+x]; - } - - buf += maplength; - - ptr = p->data[0]; - stride = p->linesize[0]; - - /* scanlines are aligned on 16 bit boundaries */ - len = (depth * w + 7) >> 3; - alen = len + (len&1); - - if (type == RT_BYTE_ENCODED) { - int value, run; - uint8_t *end = ptr + h*stride; - - x = 0; - while (ptr != end) { - run = 1; - if ((value = *buf++) == 0x80) { - run = *buf++ + 1; - if (run != 1) - value = *buf++; - } - while (run--) { - if (x < len) - ptr[x] = value; - if (++x >= alen) { - x = 0; - ptr += stride; - if (ptr == end) - break; - } - } - } - } else { - for (y=0; y<h; y++) { - memcpy(ptr, buf, len); - ptr += stride; - buf += alen; - } - } - - *picture = s->picture; - *data_size = sizeof(AVFrame); - - return buf - bufstart; -} - -static int sunrast_end(AVCodecContext *avctx) { - SUNRASTContext *s = avctx->priv_data; - - if(s->picture.data[0]) - avctx->release_buffer(avctx, &s->picture); - - return 0; -} - -AVCodec sunrast_decoder = { - "sunrast", - CODEC_TYPE_VIDEO, - CODEC_ID_SUNRAST, - sizeof(SUNRASTContext), - sunrast_init, - NULL, - sunrast_end, - sunrast_decode_frame, - 0, - NULL -}; |