| 0,0 → 1,102 |
|---|
| /* |
| * y41p encoder |
| * |
| * Copyright (c) 2012 Paul B Mahol |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avcodec.h" |
| #include "internal.h" |
| |
| static av_cold int y41p_encode_init(AVCodecContext *avctx) |
| { |
| if (avctx->width & 7) { |
| av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| avctx->coded_frame = avcodec_alloc_frame(); |
| avctx->bits_per_coded_sample = 12; |
| |
| if (!avctx->coded_frame) { |
| av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
| return AVERROR(ENOMEM); |
| } |
| |
| return 0; |
| } |
| |
| static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *pic, int *got_packet) |
| { |
| uint8_t *dst; |
| uint8_t *y, *u, *v; |
| int i, j, ret; |
| |
| if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5)) < 0) |
| return ret; |
| |
| avctx->coded_frame->key_frame = 1; |
| avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| dst = pkt->data; |
| |
| for (i = avctx->height - 1; i >= 0; i--) { |
| y = &pic->data[0][i * pic->linesize[0]]; |
| u = &pic->data[1][i * pic->linesize[1]]; |
| v = &pic->data[2][i * pic->linesize[2]]; |
| for (j = 0; j < avctx->width; j += 8) { |
| *(dst++) = *(u++); |
| *(dst++) = *(y++); |
| *(dst++) = *(v++); |
| *(dst++) = *(y++); |
| |
| *(dst++) = *(u++); |
| *(dst++) = *(y++); |
| *(dst++) = *(v++); |
| *(dst++) = *(y++); |
| |
| *(dst++) = *(y++); |
| *(dst++) = *(y++); |
| *(dst++) = *(y++); |
| *(dst++) = *(y++); |
| } |
| } |
| |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| *got_packet = 1; |
| return 0; |
| } |
| |
| static av_cold int y41p_encode_close(AVCodecContext *avctx) |
| { |
| av_freep(&avctx->coded_frame); |
| |
| return 0; |
| } |
| |
| AVCodec ff_y41p_encoder = { |
| .name = "y41p", |
| .long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_Y41P, |
| .init = y41p_encode_init, |
| .encode2 = y41p_encode_frame, |
| .close = y41p_encode_close, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, |
| AV_PIX_FMT_NONE }, |
| }; |