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/* |
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* y41p encoder |
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* |
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* Copyright (c) 2012 Paul B Mahol |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "internal.h" |
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static av_cold int y41p_encode_init(AVCodecContext *avctx) |
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{ |
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✗✓ |
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if (avctx->width & 7) { |
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av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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avctx->bits_per_coded_sample = 12; |
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avctx->bit_rate = ff_guess_coded_bitrate(avctx); |
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return 0; |
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} |
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static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
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const AVFrame *pic, int *got_packet) |
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{ |
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uint8_t *dst; |
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uint8_t *y, *u, *v; |
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int i, j, ret; |
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✗✓ |
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if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5, 0)) < 0) |
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return ret; |
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dst = pkt->data; |
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✓✓ |
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for (i = avctx->height - 1; i >= 0; i--) { |
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y = &pic->data[0][i * pic->linesize[0]]; |
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u = &pic->data[1][i * pic->linesize[1]]; |
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v = &pic->data[2][i * pic->linesize[2]]; |
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✓✓ |
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for (j = 0; j < avctx->width; j += 8) { |
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*(dst++) = *(u++); |
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*(dst++) = *(y++); |
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*(dst++) = *(v++); |
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*(dst++) = *(y++); |
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*(dst++) = *(u++); |
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*(dst++) = *(y++); |
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*(dst++) = *(v++); |
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*(dst++) = *(y++); |
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*(dst++) = *(y++); |
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*(dst++) = *(y++); |
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1900800 |
*(dst++) = *(y++); |
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*(dst++) = *(y++); |
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} |
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} |
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pkt->flags |= AV_PKT_FLAG_KEY; |
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*got_packet = 1; |
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return 0; |
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} |
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AVCodec ff_y41p_encoder = { |
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.name = "y41p", |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_Y41P, |
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.init = y41p_encode_init, |
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.encode2 = y41p_encode_frame, |
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.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, |
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AV_PIX_FMT_NONE }, |
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}; |