/*
  * v410 decoder
  *
  * Copyright (c) 2011 Derek Buitenhuis
  *
  * 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 "libavutil/common.h"

 #include "libavutil/intreadwrite.h"

 #include "avcodec.h"

 #include "internal.h"

 
 static av_cold int v410_decode_init(AVCodecContext *avctx)
 {

     avctx->pix_fmt             = AV_PIX_FMT_YUV444P10;

     avctx->bits_per_raw_sample = 10;
 
     if (avctx->width & 1) {

         if (avctx->err_recognition & AV_EF_EXPLODE) {

             av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");

             return AVERROR_INVALIDDATA;
         } else {

             av_log(avctx, AV_LOG_WARNING, "v410 requires width to be even, continuing anyway.\n");

         }

     }
 
     return 0;
 }
 
 static int v410_decode_frame(AVCodecContext *avctx, void *data,

                              int *got_frame, AVPacket *avpkt)

 {

     AVFrame *pic = data;

     uint8_t *src = avpkt->data;
     uint16_t *y, *u, *v;
     uint32_t val;

     int i, j, ret;

     if (avpkt->size < 4 * avctx->height * avctx->width) {

         av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
         return AVERROR(EINVAL);
     }
 

     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
         return ret;

 
     pic->key_frame = 1;

     pic->pict_type = AV_PICTURE_TYPE_I;

 
     y = (uint16_t *)pic->data[0];
     u = (uint16_t *)pic->data[1];
     v = (uint16_t *)pic->data[2];
 
     for (i = 0; i < avctx->height; i++) {
         for (j = 0; j < avctx->width; j++) {
             val = AV_RL32(src);
 
             u[j] = (val >>  2) & 0x3FF;
             y[j] = (val >> 12) & 0x3FF;
             v[j] = (val >> 22);
 
             src += 4;
         }
 
         y += pic->linesize[0] >> 1;
         u += pic->linesize[1] >> 1;
         v += pic->linesize[2] >> 1;
     }
 

     *got_frame = 1;

 
     return avpkt->size;
 }
 
 AVCodec ff_v410_decoder = {
     .name         = "v410",

     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),

     .type         = AVMEDIA_TYPE_VIDEO,

     .id           = AV_CODEC_ID_V410,

     .init         = v410_decode_init,
     .decode       = v410_decode_frame,

     .capabilities = AV_CODEC_CAP_DR1,

 };