100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*
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* v410 encoder
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*
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* Copyright (c) 2011 Derek Buitenhuis
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "libavutil/intreadwrite.h"
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#include "avcodec.h"
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static av_cold int v410_encode_init(AVCodecContext *avctx)
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{
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if (avctx->width & 1) {
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av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n");
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return AVERROR_INVALIDDATA;
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}
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avctx->coded_frame = avcodec_alloc_frame();
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if (!avctx->coded_frame) {
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av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int v410_encode_frame(AVCodecContext *avctx, uint8_t *buf,
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int buf_size, void *data)
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{
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AVFrame *pic = data;
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uint8_t *dst = buf;
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uint16_t *y, *u, *v;
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uint32_t val;
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int i, j;
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int output_size = 0;
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if (buf_size < avctx->width * avctx->height * 4) {
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av_log(avctx, AV_LOG_ERROR, "Out buffer is too small.\n");
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return AVERROR(ENOMEM);
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}
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avctx->coded_frame->reference = 0;
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avctx->coded_frame->key_frame = 1;
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avctx->coded_frame->pict_type = FF_I_TYPE;
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y = (uint16_t *)pic->data[0];
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u = (uint16_t *)pic->data[1];
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v = (uint16_t *)pic->data[2];
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for (i = 0; i < avctx->height; i++) {
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for (j = 0; j < avctx->width; j++) {
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val = u[j] << 2;
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val |= y[j] << 12;
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val |= (uint32_t) v[j] << 22;
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AV_WL32(dst, val);
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dst += 4;
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output_size += 4;
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}
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y += pic->linesize[0] >> 1;
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u += pic->linesize[1] >> 1;
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v += pic->linesize[2] >> 1;
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}
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return output_size;
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}
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static av_cold int v410_encode_close(AVCodecContext *avctx)
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{
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av_freep(&avctx->coded_frame);
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return 0;
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}
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AVCodec ff_v410_encoder = {
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.name = "v410",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_V410,
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.init = v410_encode_init,
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.encode = v410_encode_frame,
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.close = v410_encode_close,
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.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV444P10, PIX_FMT_NONE },
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
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};
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