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/* |
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* v408 decoder |
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* Copyright (c) 2012 Carl Eugen Hoyos |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "internal.h" |
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static av_cold int v408_decode_init(AVCodecContext *avctx) |
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{ |
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avctx->pix_fmt = AV_PIX_FMT_YUVA444P; |
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return 0; |
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} |
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static int v408_decode_frame(AVCodecContext *avctx, void *data, |
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int *got_frame, AVPacket *avpkt) |
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{ |
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AVFrame *pic = data; |
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const uint8_t *src = avpkt->data; |
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uint8_t *y, *u, *v, *a; |
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int i, j, ret; |
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✗✓ |
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if (avpkt->size < 4 * avctx->height * avctx->width) { |
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av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
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return AVERROR(EINVAL); |
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} |
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✗✓ |
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if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) |
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return ret; |
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pic->key_frame = 1; |
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pic->pict_type = AV_PICTURE_TYPE_I; |
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y = pic->data[0]; |
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u = pic->data[1]; |
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v = pic->data[2]; |
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a = pic->data[3]; |
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✓✓ |
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for (i = 0; i < avctx->height; i++) { |
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✓✓ |
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for (j = 0; j < avctx->width; j++) { |
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✗✓ |
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if (avctx->codec_id==AV_CODEC_ID_AYUV) { |
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v[j] = *src++; |
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u[j] = *src++; |
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y[j] = *src++; |
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a[j] = *src++; |
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} else { |
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u[j] = *src++; |
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y[j] = *src++; |
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v[j] = *src++; |
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a[j] = *src++; |
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} |
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} |
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y += pic->linesize[0]; |
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u += pic->linesize[1]; |
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v += pic->linesize[2]; |
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a += pic->linesize[3]; |
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} |
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*got_frame = 1; |
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return avpkt->size; |
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} |
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#if CONFIG_AYUV_DECODER |
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AVCodec ff_ayuv_decoder = { |
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.name = "ayuv", |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_AYUV, |
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.init = v408_decode_init, |
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.decode = v408_decode_frame, |
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.capabilities = AV_CODEC_CAP_DR1, |
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
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}; |
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#endif |
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#if CONFIG_V408_DECODER |
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AVCodec ff_v408_decoder = { |
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.name = "v408", |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_V408, |
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.init = v408_decode_init, |
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.decode = v408_decode_frame, |
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.capabilities = AV_CODEC_CAP_DR1, |
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
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}; |
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#endif |