diff options
Diffstat (limited to 'ffmpeg/libavcodec/aasc.c')
| -rw-r--r-- | ffmpeg/libavcodec/aasc.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/ffmpeg/libavcodec/aasc.c b/ffmpeg/libavcodec/aasc.c deleted file mode 100644 index 38658f8..0000000 --- a/ffmpeg/libavcodec/aasc.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Autodesk RLE Decoder - * Copyright (C) 2005 the ffmpeg project - * - * 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 - * Autodesk RLE Video Decoder by Konstantin Shishkov - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "avcodec.h" -#include "internal.h" -#include "msrledec.h" - -typedef struct AascContext { - AVCodecContext *avctx; - GetByteContext gb; - AVFrame *frame; - - uint32_t palette[AVPALETTE_COUNT]; - int palette_size; -} AascContext; - -static av_cold int aasc_decode_init(AVCodecContext *avctx) -{ - AascContext *s = avctx->priv_data; - uint8_t *ptr; - int i; - - s->avctx = avctx; - switch (avctx->bits_per_coded_sample) { - case 8: - avctx->pix_fmt = AV_PIX_FMT_PAL8; - - ptr = avctx->extradata; - s->palette_size = FFMIN(avctx->extradata_size, AVPALETTE_SIZE); - for (i = 0; i < s->palette_size / 4; i++) { - s->palette[i] = 0xFFU << 24 | AV_RL32(ptr); - ptr += 4; - } - break; - case 16: - avctx->pix_fmt = AV_PIX_FMT_RGB555LE; - break; - case 24: - avctx->pix_fmt = AV_PIX_FMT_BGR24; - break; - default: - av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", avctx->bits_per_coded_sample); - return -1; - } - - s->frame = av_frame_alloc(); - if (!s->frame) - return AVERROR(ENOMEM); - - return 0; -} - -static int aasc_decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - AascContext *s = avctx->priv_data; - int compr, i, stride, psize, ret; - - if (buf_size < 4) { - av_log(avctx, AV_LOG_ERROR, "frame too short\n"); - return AVERROR_INVALIDDATA; - } - - if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) - return ret; - - compr = AV_RL32(buf); - buf += 4; - buf_size -= 4; - psize = avctx->bits_per_coded_sample / 8; - switch (avctx->codec_tag) { - case MKTAG('A', 'A', 'S', '4'): - bytestream2_init(&s->gb, buf - 4, buf_size + 4); - ff_msrle_decode(avctx, (AVPicture*)s->frame, 8, &s->gb); - break; - case MKTAG('A', 'A', 'S', 'C'): - switch (compr) { - case 0: - stride = (avctx->width * psize + psize) & ~psize; - if (buf_size < stride * avctx->height) - return AVERROR_INVALIDDATA; - for (i = avctx->height - 1; i >= 0; i--) { - memcpy(s->frame->data[0] + i * s->frame->linesize[0], buf, avctx->width * psize); - buf += stride; - buf_size -= stride; - } - break; - case 1: - bytestream2_init(&s->gb, buf, buf_size); - ff_msrle_decode(avctx, (AVPicture*)s->frame, 8, &s->gb); - break; - default: - av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr); - return AVERROR_INVALIDDATA; - } - break; - default: - av_log(avctx, AV_LOG_ERROR, "Unknown FourCC: %X\n", avctx->codec_tag); - return -1; - } - - if (avctx->pix_fmt == AV_PIX_FMT_PAL8) - memcpy(s->frame->data[1], s->palette, s->palette_size); - - *got_frame = 1; - if ((ret = av_frame_ref(data, s->frame)) < 0) - return ret; - - /* report that the buffer was completely consumed */ - return buf_size; -} - -static av_cold int aasc_decode_end(AVCodecContext *avctx) -{ - AascContext *s = avctx->priv_data; - - av_frame_free(&s->frame); - - return 0; -} - -AVCodec ff_aasc_decoder = { - .name = "aasc", - .long_name = NULL_IF_CONFIG_SMALL("Autodesk RLE"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_AASC, - .priv_data_size = sizeof(AascContext), - .init = aasc_decode_init, - .close = aasc_decode_end, - .decode = aasc_decode_frame, - .capabilities = CODEC_CAP_DR1, -}; |