libavcodec/v308enc.c

   1 /*
   2  * v308 encoder
   3  *
   4  * Copyright (c) 2011 Carl Eugen Hoyos
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 #include "codec_internal.h"
  26 #include "encode.h"
  27 #include "internal.h"
  28
  29 static av_cold int v308_encode_init(AVCodecContext *avctx)
  30 {
  31     if (avctx->width & 1) {
  32         av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
  33         return AVERROR_INVALIDDATA;
  34     }
  35
  36     av_log(avctx, AV_LOG_WARNING, "This encoder is deprecated and will be removed.\n");
  37
  38     avctx->bits_per_coded_sample = 24;
  39     avctx->bit_rate = ff_guess_coded_bitrate(avctx);
  40
  41     return 0;
  42 }
  43
  44 static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
  45                              const AVFrame *pic, int *got_packet)
  46 {
  47     uint8_t *dst;
  48     const uint8_t *y, *u, *v;
  49     int i, j, ret;
  50
  51     ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 3, 0);
  52     if (ret < 0)
  53         return ret;
  54     dst = pkt->data;
  55
  56     y = pic->data[0];
  57     u = pic->data[1];
  58     v = pic->data[2];
  59
  60     for (i = 0; i < avctx->height; i++) {
  61         for (j = 0; j < avctx->width; j++) {
  62             *dst++ = v[j];
  63             *dst++ = y[j];
  64             *dst++ = u[j];
  65         }
  66         y += pic->linesize[0];
  67         u += pic->linesize[1];
  68         v += pic->linesize[2];
  69     }
  70
  71     *got_packet = 1;
  72     return 0;
  73 }
  74
  75 const FFCodec ff_v308_encoder = {
  76     .p.name       = "v308",
  77     CODEC_LONG_NAME("Uncompressed packed 4:4:4"),
  78     .p.type       = AVMEDIA_TYPE_VIDEO,
  79     .p.id         = AV_CODEC_ID_V308,
  80     .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
  81     .init         = v308_encode_init,
  82     FF_CODEC_ENCODE_CB(v308_encode_frame),
  83     .p.pix_fmts   = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
  84 };