/* * v308 decoder * Copyright (c) 2011 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" static av_cold int v308_decode_init(AVCodecContext *avctx) { avctx->pix_fmt = AV_PIX_FMT_YUV444P; if (avctx->width & 1) av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n"); return 0; } static int v308_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { AVFrame *pic = data; const uint8_t *src = avpkt->data; uint8_t *y, *u, *v; int i, j, ret; if (avpkt->size < 3 * avctx->height * avctx->width) { av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); return AVERROR(EINVAL); } if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) return ret; pic->key_frame = 1; pic->pict_type = AV_PICTURE_TYPE_I; y = pic->data[0]; u = pic->data[1]; v = pic->data[2]; for (i = 0; i < avctx->height; i++) { for (j = 0; j < avctx->width; j++) { v[j] = *src++; y[j] = *src++; u[j] = *src++; } y += pic->linesize[0]; u += pic->linesize[1]; v += pic->linesize[2]; } *got_frame = 1; return avpkt->size; } const AVCodec ff_v308_decoder = { .name = "v308", .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_V308, .init = v308_decode_init, .decode = v308_decode_frame, .capabilities = AV_CODEC_CAP_DR1, };