diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavcodec/sgirledec.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavcodec/sgirledec.c')
| -rw-r--r-- | ffmpeg/libavcodec/sgirledec.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/ffmpeg/libavcodec/sgirledec.c b/ffmpeg/libavcodec/sgirledec.c deleted file mode 100644 index fd3cc5e..0000000 --- a/ffmpeg/libavcodec/sgirledec.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * SGI RLE 8-bit decoder - * Copyright (c) 2012 Peter Ross - * - * 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 - * SGI RLE 8-bit decoder - */ - -#include "avcodec.h" -#include "internal.h" - -typedef struct SGIRLEContext { - AVFrame *frame; -} SGIRLEContext; - -static av_cold int sgirle_decode_init(AVCodecContext *avctx) -{ - SGIRLEContext *s = avctx->priv_data; - avctx->pix_fmt = AV_PIX_FMT_BGR8; - s->frame = av_frame_alloc(); - if (!s->frame) - return AVERROR(ENOMEM); - return 0; -} - -/** - * Convert SGI RGB332 pixel into AV_PIX_FMT_BGR8 - * SGI RGB332 is packed RGB 3:3:2, 8bpp, (msb)3R 2B 3G(lsb) - */ -#define RGB332_TO_BGR8(x) (((x << 3) & 0xC0) | ((x << 3) & 0x38) | ((x >> 5) & 7)) - -static av_always_inline void memcpy_rgb332_to_bgr8(uint8_t *dst, const uint8_t *src, int size) -{ - int i; - for (i = 0; i < size; i++) - dst[i] = RGB332_TO_BGR8(src[i]); -} - -/** - * @param[out] dst Destination buffer - * @param[in] src Source buffer - * @param src_size Source buffer size (bytes) - * @param width Width of destination buffer (pixels) - * @param height Height of destination buffer (pixels) - * @param linesize Line size of destination buffer (bytes) - * @return <0 on error - */ -static int decode_sgirle8(AVCodecContext *avctx, uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize) -{ - const uint8_t *src_end = src + src_size; - int x = 0, y = 0; - -#define INC_XY(n) \ - x += n; \ - if (x >= width) { \ - y++; \ - if (y >= height) \ - return 0; \ - x = 0; \ - } - - while (src_end - src >= 2) { - uint8_t v = *src++; - if (v > 0 && v < 0xC0) { - do { - int length = FFMIN(v, width - x); - if (length <= 0) - break; - memset(dst + y*linesize + x, RGB332_TO_BGR8(*src), length); - INC_XY(length); - v -= length; - } while (v > 0); - src++; - } else if (v >= 0xC1) { - v -= 0xC0; - do { - int length = FFMIN3(v, width - x, src_end - src); - if (src_end - src < length || length <= 0) - break; - memcpy_rgb332_to_bgr8(dst + y*linesize + x, src, length); - INC_XY(length); - src += length; - v -= length; - } while (v > 0); - } else { - avpriv_request_sample(avctx, "opcode %d", v); - return AVERROR_PATCHWELCOME; - } - } - return 0; -} - -static int sgirle_decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - SGIRLEContext *s = avctx->priv_data; - int ret; - - if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) - return ret; - - ret = decode_sgirle8(avctx, s->frame->data[0], avpkt->data, avpkt->size, avctx->width, avctx->height, s->frame->linesize[0]); - if (ret < 0) - return ret; - - *got_frame = 1; - if ((ret = av_frame_ref(data, s->frame)) < 0) - return ret; - - return avpkt->size; -} - -static av_cold int sgirle_decode_end(AVCodecContext *avctx) -{ - SGIRLEContext *s = avctx->priv_data; - - av_frame_free(&s->frame); - - return 0; -} - -AVCodec ff_sgirle_decoder = { - .name = "sgirle", - .long_name = NULL_IF_CONFIG_SMALL("SGI RLE 8-bit"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_SGIRLE, - .priv_data_size = sizeof(SGIRLEContext), - .init = sgirle_decode_init, - .close = sgirle_decode_end, - .decode = sgirle_decode_frame, - .capabilities = CODEC_CAP_DR1, -}; |
