1/* 2 * v408 decoder 3 * Copyright (c) 2012 Carl Eugen Hoyos 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "config_components.h" 23 24#include "avcodec.h" 25#include "codec_internal.h" 26#include "internal.h" 27 28static av_cold int v408_decode_init(AVCodecContext *avctx) 29{ 30 avctx->pix_fmt = AV_PIX_FMT_YUVA444P; 31 32 return 0; 33} 34 35static int v408_decode_frame(AVCodecContext *avctx, AVFrame *pic, 36 int *got_frame, AVPacket *avpkt) 37{ 38 const uint8_t *src = avpkt->data; 39 uint8_t *y, *u, *v, *a; 40 int i, j, ret; 41 42 if (avpkt->size < 4 * avctx->height * avctx->width) { 43 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); 44 return AVERROR(EINVAL); 45 } 46 47 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) 48 return ret; 49 50 pic->key_frame = 1; 51 pic->pict_type = AV_PICTURE_TYPE_I; 52 53 y = pic->data[0]; 54 u = pic->data[1]; 55 v = pic->data[2]; 56 a = pic->data[3]; 57 58 for (i = 0; i < avctx->height; i++) { 59 for (j = 0; j < avctx->width; j++) { 60 if (avctx->codec_id==AV_CODEC_ID_AYUV) { 61 v[j] = *src++; 62 u[j] = *src++; 63 y[j] = *src++; 64 a[j] = *src++; 65 } else { 66 u[j] = *src++; 67 y[j] = *src++; 68 v[j] = *src++; 69 a[j] = *src++; 70 } 71 } 72 73 y += pic->linesize[0]; 74 u += pic->linesize[1]; 75 v += pic->linesize[2]; 76 a += pic->linesize[3]; 77 } 78 79 *got_frame = 1; 80 81 return avpkt->size; 82} 83 84#if CONFIG_AYUV_DECODER 85const FFCodec ff_ayuv_decoder = { 86 .p.name = "ayuv", 87 .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"), 88 .p.type = AVMEDIA_TYPE_VIDEO, 89 .p.id = AV_CODEC_ID_AYUV, 90 .init = v408_decode_init, 91 FF_CODEC_DECODE_CB(v408_decode_frame), 92 .p.capabilities = AV_CODEC_CAP_DR1, 93 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, 94}; 95#endif 96#if CONFIG_V408_DECODER 97const FFCodec ff_v408_decoder = { 98 .p.name = "v408", 99 .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), 100 .p.type = AVMEDIA_TYPE_VIDEO, 101 .p.id = AV_CODEC_ID_V408, 102 .init = v408_decode_init, 103 FF_CODEC_DECODE_CB(v408_decode_frame), 104 .p.capabilities = AV_CODEC_CAP_DR1, 105 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, 106}; 107#endif 108