| /* |
| * libquicktime yuv4 encoder |
| * |
| * Copyright (c) 2011 Carl Eugen Hoyos |
| * |
| * 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 "codec_internal.h" |
| #include "encode.h" |
| |
| static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *pic, int *got_packet) |
| { |
| uint8_t *dst; |
| const uint8_t *y, *u, *v; |
| int ret; |
| |
| ret = ff_get_encode_buffer(avctx, pkt, 6 * ((avctx->width + 1) / 2) |
| * ((avctx->height + 1) / 2), 0); |
| if (ret < 0) |
| return ret; |
| dst = pkt->data; |
| |
| y = pic->data[0]; |
| u = pic->data[1]; |
| v = pic->data[2]; |
| |
| for (int i = 0; i < avctx->height / 2; i++) { |
| for (int j = 0; j < (avctx->width + 1) / 2; j++) { |
| *dst++ = u[j] ^ 0x80; |
| *dst++ = v[j] ^ 0x80; |
| *dst++ = y[ 2 * j ]; |
| *dst++ = y[ 2 * j + 1]; |
| *dst++ = y[pic->linesize[0] + 2 * j ]; |
| *dst++ = y[pic->linesize[0] + 2 * j + 1]; |
| } |
| y += 2 * pic->linesize[0]; |
| u += pic->linesize[1]; |
| v += pic->linesize[2]; |
| } |
| |
| if (avctx->height & 1) { |
| for (int j = 0; j < (avctx->width + 1) / 2; j++) { |
| *dst++ = u[j] ^ 0x80; |
| *dst++ = v[j] ^ 0x80; |
| *dst++ = y[2 * j ]; |
| *dst++ = y[2 * j + 1]; |
| *dst++ = y[2 * j ]; |
| *dst++ = y[2 * j + 1]; |
| } |
| } |
| |
| *got_packet = 1; |
| return 0; |
| } |
| |
| const FFCodec ff_yuv4_encoder = { |
| .p.name = "yuv4", |
| CODEC_LONG_NAME("Uncompressed packed 4:2:0"), |
| .p.type = AVMEDIA_TYPE_VIDEO, |
| .p.id = AV_CODEC_ID_YUV4, |
| .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, |
| .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
| FF_CODEC_ENCODE_CB(yuv4_encode_frame), |
| }; |