Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * v410 encoder
  3.  *
  4.  * Copyright (c) 2011 Derek Buitenhuis
  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/common.h"
  24. #include "libavutil/intreadwrite.h"
  25. #include "avcodec.h"
  26. #include "internal.h"
  27.  
  28. static av_cold int v410_encode_init(AVCodecContext *avctx)
  29. {
  30.     if (avctx->width & 1) {
  31.         av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
  32.         return AVERROR_INVALIDDATA;
  33.     }
  34.  
  35.     avctx->coded_frame = avcodec_alloc_frame();
  36.  
  37.     if (!avctx->coded_frame) {
  38.         av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
  39.         return AVERROR(ENOMEM);
  40.     }
  41.  
  42.     return 0;
  43. }
  44.  
  45. static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
  46.                              const AVFrame *pic, int *got_packet)
  47. {
  48.     uint8_t *dst;
  49.     uint16_t *y, *u, *v;
  50.     uint32_t val;
  51.     int i, j, ret;
  52.  
  53.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0)
  54.         return ret;
  55.     dst = pkt->data;
  56.  
  57.     avctx->coded_frame->key_frame = 1;
  58.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  59.  
  60.     y = (uint16_t *)pic->data[0];
  61.     u = (uint16_t *)pic->data[1];
  62.     v = (uint16_t *)pic->data[2];
  63.  
  64.     for (i = 0; i < avctx->height; i++) {
  65.         for (j = 0; j < avctx->width; j++) {
  66.             val  = u[j] << 2;
  67.             val |= y[j] << 12;
  68.             val |= (uint32_t) v[j] << 22;
  69.             AV_WL32(dst, val);
  70.             dst += 4;
  71.         }
  72.         y += pic->linesize[0] >> 1;
  73.         u += pic->linesize[1] >> 1;
  74.         v += pic->linesize[2] >> 1;
  75.     }
  76.  
  77.     pkt->flags |= AV_PKT_FLAG_KEY;
  78.     *got_packet = 1;
  79.     return 0;
  80. }
  81.  
  82. static av_cold int v410_encode_close(AVCodecContext *avctx)
  83. {
  84.     av_freep(&avctx->coded_frame);
  85.  
  86.     return 0;
  87. }
  88.  
  89. AVCodec ff_v410_encoder = {
  90.     .name         = "v410",
  91.     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
  92.     .type         = AVMEDIA_TYPE_VIDEO,
  93.     .id           = AV_CODEC_ID_V410,
  94.     .init         = v410_encode_init,
  95.     .encode2      = v410_encode_frame,
  96.     .close        = v410_encode_close,
  97.     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
  98. };
  99.