/*
  * R210 encoder
  *
  * Copyright (c) 2012 Paul B Mahol
  *
  * 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 "avcodec.h"

 #include "internal.h"

 #include "bytestream.h"
 
 static av_cold int encode_init(AVCodecContext *avctx)
 {

     avctx->coded_frame = av_frame_alloc();

 
     if (!avctx->coded_frame)
         return AVERROR(ENOMEM);
 
     return 0;
 }
 

 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                         const AVFrame *pic, int *got_packet)

 {

     int i, j, ret;

     int aligned_width = FFALIGN(avctx->width,

                                 avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);

     int pad = (aligned_width - avctx->width) * 4;

     uint8_t *src_line;

     uint8_t *dst;

     if ((ret = ff_alloc_packet2(avctx, pkt, 4 * aligned_width * avctx->height)) < 0)

         return ret;

 
     avctx->coded_frame->key_frame = 1;
     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
     src_line = pic->data[0];

     dst = pkt->data;

 
     for (i = 0; i < avctx->height; i++) {
         uint16_t *src = (uint16_t *)src_line;
         for (j = 0; j < avctx->width; j++) {
             uint32_t pixel;
             uint16_t r = *src++ >> 6;
             uint16_t g = *src++ >> 6;
             uint16_t b = *src++ >> 4;

             if (avctx->codec_id == AV_CODEC_ID_R210)

                 pixel = (r << 20) | (g << 10) | b >> 2;
             else
                 pixel = (r << 22) | (g << 12) | b;

             if (avctx->codec_id == AV_CODEC_ID_AVRP)

                 bytestream_put_le32(&dst, pixel);
             else
                 bytestream_put_be32(&dst, pixel);
         }

         memset(dst, 0, pad);
         dst += pad;

         src_line += pic->linesize[0];
     }
 

     pkt->flags |= AV_PKT_FLAG_KEY;
     *got_packet = 1;
     return 0;

 }
 
 static av_cold int encode_close(AVCodecContext *avctx)
 {
     av_freep(&avctx->coded_frame);
 
     return 0;
 }
 
 #if CONFIG_R210_ENCODER
 AVCodec ff_r210_encoder = {
     .name           = "r210",

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

     .type           = AVMEDIA_TYPE_VIDEO,

     .id             = AV_CODEC_ID_R210,

     .init           = encode_init,

     .encode2        = encode_frame,

     .close          = encode_close,

     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },

 };
 #endif
 #if CONFIG_R10K_ENCODER
 AVCodec ff_r10k_encoder = {
     .name           = "r10k",

     .long_name      = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),

     .type           = AVMEDIA_TYPE_VIDEO,

     .id             = AV_CODEC_ID_R10K,

     .init           = encode_init,

     .encode2        = encode_frame,

     .close          = encode_close,

     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },

 };
 #endif
 #if CONFIG_AVRP_ENCODER
 AVCodec ff_avrp_encoder = {
     .name           = "avrp",

     .long_name      = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),

     .type           = AVMEDIA_TYPE_VIDEO,

     .id             = AV_CODEC_ID_AVRP,

     .init           = encode_init,

     .encode2        = encode_frame,

     .close          = encode_close,

     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },

 };
 #endif