1/* 2 * v410 encoder 3 * 4 * Copyright (c) 2011 Derek Buitenhuis 5 * 6 * This file is part of Libav. 7 * 8 * Libav 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 * Libav 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 Libav; 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/intreadwrite.h" 24#include "avcodec.h" 25 26static av_cold int v410_encode_init(AVCodecContext *avctx) 27{ 28 if (avctx->width & 1) { 29 av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n"); 30 return AVERROR_INVALIDDATA; 31 } 32 33 avctx->coded_frame = avcodec_alloc_frame(); 34 35 if (!avctx->coded_frame) { 36 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); 37 return AVERROR(ENOMEM); 38 } 39 40 return 0; 41} 42 43static int v410_encode_frame(AVCodecContext *avctx, uint8_t *buf, 44 int buf_size, void *data) 45{ 46 AVFrame *pic = data; 47 uint8_t *dst = buf; 48 uint16_t *y, *u, *v; 49 uint32_t val; 50 int i, j; 51 int output_size = 0; 52 53 if (buf_size < avctx->width * avctx->height * 4) { 54 av_log(avctx, AV_LOG_ERROR, "Out buffer is too small.\n"); 55 return AVERROR(ENOMEM); 56 } 57 58 avctx->coded_frame->reference = 0; 59 avctx->coded_frame->key_frame = 1; 60 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; 61 62 y = (uint16_t *)pic->data[0]; 63 u = (uint16_t *)pic->data[1]; 64 v = (uint16_t *)pic->data[2]; 65 66 for (i = 0; i < avctx->height; i++) { 67 for (j = 0; j < avctx->width; j++) { 68 val = u[j] << 2; 69 val |= y[j] << 12; 70 val |= (uint32_t) v[j] << 22; 71 AV_WL32(dst, val); 72 dst += 4; 73 output_size += 4; 74 } 75 y += pic->linesize[0] >> 1; 76 u += pic->linesize[1] >> 1; 77 v += pic->linesize[2] >> 1; 78 } 79 80 return output_size; 81} 82 83static av_cold int v410_encode_close(AVCodecContext *avctx) 84{ 85 av_freep(&avctx->coded_frame); 86 87 return 0; 88} 89 90AVCodec ff_v410_encoder = { 91 .name = "v410", 92 .type = AVMEDIA_TYPE_VIDEO, 93 .id = CODEC_ID_V410, 94 .init = v410_encode_init, 95 .encode = v410_encode_frame, 96 .close = v410_encode_close, 97 .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV444P10, PIX_FMT_NONE }, 98 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"), 99}; 100