yading@10: /*
yading@10:  * v408 decoder
yading@10:  * Copyright (c) 2012 Carl Eugen Hoyos
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "internal.h"
yading@10: 
yading@10: static av_cold int v408_decode_init(AVCodecContext *avctx)
yading@10: {
yading@10:     avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int v408_decode_frame(AVCodecContext *avctx, void *data,
yading@10:                              int *got_frame, AVPacket *avpkt)
yading@10: {
yading@10:     AVFrame *pic = data;
yading@10:     const uint8_t *src = avpkt->data;
yading@10:     uint8_t *y, *u, *v, *a;
yading@10:     int i, j, ret;
yading@10: 
yading@10:     if (avpkt->size < 4 * avctx->height * avctx->width) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
yading@10:         return AVERROR(EINVAL);
yading@10:     }
yading@10: 
yading@10:     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
yading@10:         return ret;
yading@10: 
yading@10:     pic->key_frame = 1;
yading@10:     pic->pict_type = AV_PICTURE_TYPE_I;
yading@10: 
yading@10:     y = pic->data[0];
yading@10:     u = pic->data[1];
yading@10:     v = pic->data[2];
yading@10:     a = pic->data[3];
yading@10: 
yading@10:     for (i = 0; i < avctx->height; i++) {
yading@10:         for (j = 0; j < avctx->width; j++) {
yading@10:             if (avctx->codec_id==AV_CODEC_ID_AYUV) {
yading@10:                 v[j] = *src++;
yading@10:                 u[j] = *src++;
yading@10:                 y[j] = *src++;
yading@10:                 a[j] = *src++;
yading@10:             } else {
yading@10:                 u[j] = *src++;
yading@10:                 y[j] = *src++;
yading@10:                 v[j] = *src++;
yading@10:                 a[j] = *src++;
yading@10:             }
yading@10:         }
yading@10: 
yading@10:         y += pic->linesize[0];
yading@10:         u += pic->linesize[1];
yading@10:         v += pic->linesize[2];
yading@10:         a += pic->linesize[3];
yading@10:     }
yading@10: 
yading@10:     *got_frame = 1;
yading@10: 
yading@10:     return avpkt->size;
yading@10: }
yading@10: 
yading@10: #if CONFIG_AYUV_DECODER
yading@10: AVCodec ff_ayuv_decoder = {
yading@10:     .name         = "ayuv",
yading@10:     .type         = AVMEDIA_TYPE_VIDEO,
yading@10:     .id           = AV_CODEC_ID_AYUV,
yading@10:     .init         = v408_decode_init,
yading@10:     .decode       = v408_decode_frame,
yading@10:     .capabilities = CODEC_CAP_DR1,
yading@10:     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"),
yading@10: };
yading@10: #endif
yading@10: #if CONFIG_V408_DECODER
yading@10: AVCodec ff_v408_decoder = {
yading@10:     .name         = "v408",
yading@10:     .type         = AVMEDIA_TYPE_VIDEO,
yading@10:     .id           = AV_CODEC_ID_V408,
yading@10:     .init         = v408_decode_init,
yading@10:     .decode       = v408_decode_frame,
yading@10:     .capabilities = CODEC_CAP_DR1,
yading@10:     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"),
yading@10: };
yading@10: #endif