1/* 2 * v410 encoder 3 * 4 * Copyright (c) 2011 Derek Buitenhuis 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 "libavutil/common.h" 24#include "libavutil/intreadwrite.h" 25#include "avcodec.h" 26#include "internal.h" 27 28static av_cold int v410_encode_init(AVCodecContext *avctx) 29{ 30 if (avctx->width & 1) { 31 av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n"); 32 return AVERROR_INVALIDDATA; 33 } 34 35 avctx->coded_frame = av_frame_alloc(); 36 37 if (!avctx->coded_frame) { 38 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); 39 return AVERROR(ENOMEM); 40 } 41 42 return 0; 43} 44 45static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt, 46 const AVFrame *pic, int *got_packet) 47{ 48 uint8_t *dst; 49 uint16_t *y, *u, *v; 50 uint32_t val; 51 int i, j, ret; 52 53 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0) 54 return ret; 55 dst = pkt->data; 56 57 avctx->coded_frame->key_frame = 1; 58 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; 59 60 y = (uint16_t *)pic->data[0]; 61 u = (uint16_t *)pic->data[1]; 62 v = (uint16_t *)pic->data[2]; 63 64 for (i = 0; i < avctx->height; i++) { 65 for (j = 0; j < avctx->width; j++) { 66 val = u[j] << 2; 67 val |= y[j] << 12; 68 val |= (uint32_t) v[j] << 22; 69 AV_WL32(dst, val); 70 dst += 4; 71 } 72 y += pic->linesize[0] >> 1; 73 u += pic->linesize[1] >> 1; 74 v += pic->linesize[2] >> 1; 75 } 76 77 pkt->flags |= AV_PKT_FLAG_KEY; 78 *got_packet = 1; 79 return 0; 80} 81 82static av_cold int v410_encode_close(AVCodecContext *avctx) 83{ 84 av_freep(&avctx->coded_frame); 85 86 return 0; 87} 88 89AVCodec ff_v410_encoder = { 90 .name = "v410", 91 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"), 92 .type = AVMEDIA_TYPE_VIDEO, 93 .id = AV_CODEC_ID_V410, 94 .init = v410_encode_init, 95 .encode2 = v410_encode_frame, 96 .close = v410_encode_close, 97 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE }, 98}; 99