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  1. /*
  2.  * v408 encoder
  3.  *
  4.  * Copyright (c) 2012 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 "internal.h"
  26.  
  27. static av_cold int v408_encode_init(AVCodecContext *avctx)
  28. {
  29.     avctx->coded_frame = avcodec_alloc_frame();
  30.  
  31.     if (!avctx->coded_frame) {
  32.         av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
  33.         return AVERROR(ENOMEM);
  34.     }
  35.  
  36.     return 0;
  37. }
  38.  
  39. static int v408_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
  40.                              const AVFrame *pic, int *got_packet)
  41. {
  42.     uint8_t *dst;
  43.     uint8_t *y, *u, *v, *a;
  44.     int i, j, ret;
  45.  
  46.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0)
  47.         return ret;
  48.     dst = pkt->data;
  49.  
  50.     avctx->coded_frame->key_frame = 1;
  51.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  52.  
  53.     y = pic->data[0];
  54.     u = pic->data[1];
  55.     v = pic->data[2];
  56.     a = pic->data[3];
  57.  
  58.     for (i = 0; i < avctx->height; i++) {
  59.         for (j = 0; j < avctx->width; j++) {
  60.            if (avctx->codec_id==AV_CODEC_ID_AYUV) {
  61.                 *dst++ = v[j];
  62.                 *dst++ = u[j];
  63.                 *dst++ = y[j];
  64.                 *dst++ = a[j];
  65.             } else {
  66.                 *dst++ = u[j];
  67.                 *dst++ = y[j];
  68.                 *dst++ = v[j];
  69.                 *dst++ = a[j];
  70.             }
  71.         }
  72.         y += pic->linesize[0];
  73.         u += pic->linesize[1];
  74.         v += pic->linesize[2];
  75.         a += pic->linesize[3];
  76.     }
  77.  
  78.     pkt->flags |= AV_PKT_FLAG_KEY;
  79.     *got_packet = 1;
  80.     return 0;
  81. }
  82.  
  83. static av_cold int v408_encode_close(AVCodecContext *avctx)
  84. {
  85.     av_freep(&avctx->coded_frame);
  86.  
  87.     return 0;
  88. }
  89.  
  90. #if CONFIG_AYUV_ENCODER
  91. AVCodec ff_ayuv_encoder = {
  92.     .name         = "ayuv",
  93.     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),
  94.     .type         = AVMEDIA_TYPE_VIDEO,
  95.     .id           = AV_CODEC_ID_AYUV,
  96.     .init         = v408_encode_init,
  97.     .encode2      = v408_encode_frame,
  98.     .close        = v408_encode_close,
  99.     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },
  100. };
  101. #endif
  102. #if CONFIG_V408_ENCODER
  103. AVCodec ff_v408_encoder = {
  104.     .name         = "v408",
  105.     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),
  106.     .type         = AVMEDIA_TYPE_VIDEO,
  107.     .id           = AV_CODEC_ID_V408,
  108.     .init         = v408_encode_init,
  109.     .encode2      = v408_encode_frame,
  110.     .close        = v408_encode_close,
  111.     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE },
  112. };
  113. #endif
  114.