1/* 2 * y41p encoder 3 * 4 * Copyright (c) 2012 Paul B Mahol 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "avcodec.h" 24#include "codec_internal.h" 25#include "encode.h" 26#include "internal.h" 27 28static av_cold int y41p_encode_init(AVCodecContext *avctx) 29{ 30 if (avctx->width & 7) { 31 av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n"); 32 return AVERROR_INVALIDDATA; 33 } 34 35 avctx->bits_per_coded_sample = 12; 36 avctx->bit_rate = ff_guess_coded_bitrate(avctx); 37 38 return 0; 39} 40 41static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt, 42 const AVFrame *pic, int *got_packet) 43{ 44 uint8_t *dst; 45 uint8_t *y, *u, *v; 46 int i, j, ret; 47 48 ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 1.5, 0); 49 if (ret < 0) 50 return ret; 51 52 dst = pkt->data; 53 54 for (i = avctx->height - 1; i >= 0; i--) { 55 y = &pic->data[0][i * pic->linesize[0]]; 56 u = &pic->data[1][i * pic->linesize[1]]; 57 v = &pic->data[2][i * pic->linesize[2]]; 58 for (j = 0; j < avctx->width; j += 8) { 59 *(dst++) = *(u++); 60 *(dst++) = *(y++); 61 *(dst++) = *(v++); 62 *(dst++) = *(y++); 63 64 *(dst++) = *(u++); 65 *(dst++) = *(y++); 66 *(dst++) = *(v++); 67 *(dst++) = *(y++); 68 69 *(dst++) = *(y++); 70 *(dst++) = *(y++); 71 *(dst++) = *(y++); 72 *(dst++) = *(y++); 73 } 74 } 75 76 *got_packet = 1; 77 return 0; 78} 79 80const FFCodec ff_y41p_encoder = { 81 .p.name = "y41p", 82 .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), 83 .p.type = AVMEDIA_TYPE_VIDEO, 84 .p.id = AV_CODEC_ID_Y41P, 85 .p.capabilities = AV_CODEC_CAP_DR1, 86 .init = y41p_encode_init, 87 FF_CODEC_ENCODE_CB(y41p_encode_frame), 88 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, 89 AV_PIX_FMT_NONE }, 90 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, 91}; 92