diff options
Diffstat (limited to 'ffmpeg1/libavcodec/avuidec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/avuidec.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/ffmpeg1/libavcodec/avuidec.c b/ffmpeg1/libavcodec/avuidec.c deleted file mode 100644 index a574f5b..0000000 --- a/ffmpeg1/libavcodec/avuidec.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * AVID Meridien decoder - * - * Copyright (c) 2012 Carl Eugen Hoyos - * - * 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" -#include "internal.h" -#include "libavutil/intreadwrite.h" - -static av_cold int avui_decode_init(AVCodecContext *avctx) -{ - avctx->pix_fmt = AV_PIX_FMT_YUVA422P; - return 0; -} - -static int avui_decode_frame(AVCodecContext *avctx, void *data, - int *got_frame, AVPacket *avpkt) -{ - int ret; - AVFrame *pic = data; - const uint8_t *src = avpkt->data, *extradata = avctx->extradata; - const uint8_t *srca; - uint8_t *y, *u, *v, *a; - int transparent, interlaced = 1, skip, opaque_length, i, j, k; - uint32_t extradata_size = avctx->extradata_size; - - while (extradata_size >= 24) { - uint32_t atom_size = AV_RB32(extradata); - if (!memcmp(&extradata[4], "APRGAPRG0001", 12)) { - interlaced = extradata[19] != 1; - break; - } - if (atom_size && atom_size <= extradata_size) { - extradata += atom_size; - extradata_size -= atom_size; - } else { - break; - } - } - if (avctx->height == 486) { - skip = 10; - } else { - skip = 16; - } - opaque_length = 2 * avctx->width * (avctx->height + skip) + 4 * interlaced; - if (avpkt->size < opaque_length) { - av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); - return AVERROR(EINVAL); - } - transparent = avctx->bits_per_coded_sample == 32 && - avpkt->size >= opaque_length * 2 + 4; - srca = src + opaque_length + 5; - - if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) - return ret; - - pic->key_frame = 1; - pic->pict_type = AV_PICTURE_TYPE_I; - - if (!interlaced) { - src += avctx->width * skip; - srca += avctx->width * skip; - } - - for (i = 0; i < interlaced + 1; i++) { - src += avctx->width * skip; - srca += avctx->width * skip; - if (interlaced && avctx->height == 486) { - y = pic->data[0] + (1 - i) * pic->linesize[0]; - u = pic->data[1] + (1 - i) * pic->linesize[1]; - v = pic->data[2] + (1 - i) * pic->linesize[2]; - a = pic->data[3] + (1 - i) * pic->linesize[3]; - } else { - y = pic->data[0] + i * pic->linesize[0]; - u = pic->data[1] + i * pic->linesize[1]; - v = pic->data[2] + i * pic->linesize[2]; - a = pic->data[3] + i * pic->linesize[3]; - } - - for (j = 0; j < avctx->height >> interlaced; j++) { - for (k = 0; k < avctx->width >> 1; k++) { - u[ k ] = *src++; - y[2 * k ] = *src++; - a[2 * k ] = 0xFF - (transparent ? *srca++ : 0); - srca++; - v[ k ] = *src++; - y[2 * k + 1] = *src++; - a[2 * k + 1] = 0xFF - (transparent ? *srca++ : 0); - srca++; - } - - y += (interlaced + 1) * pic->linesize[0]; - u += (interlaced + 1) * pic->linesize[1]; - v += (interlaced + 1) * pic->linesize[2]; - a += (interlaced + 1) * pic->linesize[3]; - } - src += 4; - srca += 4; - } - *got_frame = 1; - - return avpkt->size; -} - -AVCodec ff_avui_decoder = { - .name = "avui", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_AVUI, - .init = avui_decode_init, - .decode = avui_decode_frame, - .capabilities = CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"), -}; |