2 * Cirrus Logic AccuPak (CLJR) encoder
3 * Copyright (c) 2003 Alex Beregszaszi
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Cirrus Logic AccuPak encoder.
27 #include "libavutil/common.h"
33 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
34 const AVFrame *p, int *got_packet)
39 if ((ret = ff_alloc_packet(pkt, 32*avctx->height*avctx->width/4)) < 0) {
40 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
44 #if FF_API_CODED_FRAME
45 FF_DISABLE_DEPRECATION_WARNINGS
46 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
47 avctx->coded_frame->key_frame = 1;
48 FF_ENABLE_DEPRECATION_WARNINGS
51 init_put_bits(&pb, pkt->data, pkt->size);
53 for (y = 0; y < avctx->height; y++) {
54 uint8_t *luma = &p->data[0][y * p->linesize[0]];
55 uint8_t *cb = &p->data[1][y * p->linesize[1]];
56 uint8_t *cr = &p->data[2][y * p->linesize[2]];
57 for (x = 0; x < avctx->width; x += 4) {
58 put_bits(&pb, 5, luma[3] >> 3);
59 put_bits(&pb, 5, luma[2] >> 3);
60 put_bits(&pb, 5, luma[1] >> 3);
61 put_bits(&pb, 5, luma[0] >> 3);
63 put_bits(&pb, 6, *(cb++) >> 2);
64 put_bits(&pb, 6, *(cr++) >> 2);
70 pkt->size = put_bits_count(&pb) / 8;
71 pkt->flags |= AV_PKT_FLAG_KEY;
76 AVCodec ff_cljr_encoder = {
78 .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
79 .type = AVMEDIA_TYPE_VIDEO,
80 .id = AV_CODEC_ID_CLJR,
81 .encode2 = encode_frame,
82 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P,