1/* 2 * libquicktime yuv4 encoder 3 * 4 * Copyright (c) 2011 Carl Eugen Hoyos 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 27static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt, 28 const AVFrame *pic, int *got_packet) 29{ 30 uint8_t *dst; 31 uint8_t *y, *u, *v; 32 int i, j, ret; 33 34 ret = ff_get_encode_buffer(avctx, pkt, 6 * (avctx->width + 1 >> 1) 35 * (avctx->height + 1 >> 1), 0); 36 if (ret < 0) 37 return ret; 38 dst = pkt->data; 39 40 y = pic->data[0]; 41 u = pic->data[1]; 42 v = pic->data[2]; 43 44 for (i = 0; i < avctx->height + 1 >> 1; i++) { 45 for (j = 0; j < avctx->width + 1 >> 1; j++) { 46 *dst++ = u[j] ^ 0x80; 47 *dst++ = v[j] ^ 0x80; 48 *dst++ = y[ 2 * j ]; 49 *dst++ = y[ 2 * j + 1]; 50 *dst++ = y[pic->linesize[0] + 2 * j ]; 51 *dst++ = y[pic->linesize[0] + 2 * j + 1]; 52 } 53 y += 2 * pic->linesize[0]; 54 u += pic->linesize[1]; 55 v += pic->linesize[2]; 56 } 57 58 *got_packet = 1; 59 return 0; 60} 61 62const FFCodec ff_yuv4_encoder = { 63 .p.name = "yuv4", 64 .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:2:0"), 65 .p.type = AVMEDIA_TYPE_VIDEO, 66 .p.id = AV_CODEC_ID_YUV4, 67 .p.capabilities = AV_CODEC_CAP_DR1, 68 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, 69 FF_CODEC_ENCODE_CB(yuv4_encode_frame), 70}; 71