repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * v308 decoder | |
| 3 | * Copyright (c) 2011 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 "avcodec.h" | |
| 23 | #include "internal.h" | |
| 24 | ||
| 25 | static av_cold int v308_decode_init(AVCodecContext *avctx) | |
| 26 | { | |
| 27 | avctx->pix_fmt = AV_PIX_FMT_YUV444P; | |
| 28 | ||
| 29 | if (avctx->width & 1) | |
| 30 | av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n"); | |
| 31 | ||
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 35 | static int v308_decode_frame(AVCodecContext *avctx, void *data, | |
| 36 | int *got_frame, AVPacket *avpkt) | |
| 37 | { | |
| 38 | AVFrame *pic = data; | |
| 39 | const uint8_t *src = avpkt->data; | |
| 40 | uint8_t *y, *u, *v; | |
| 41 | int i, j, ret; | |
| 42 | ||
| 43 | if (avpkt->size < 3 * avctx->height * avctx->width) { | |
| 44 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); | |
| 45 | return AVERROR(EINVAL); | |
| 46 | } | |
| 47 | ||
| 48 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) | |
| 49 | return ret; | |
| 50 | ||
| 51 | pic->key_frame = 1; | |
| 52 | pic->pict_type = AV_PICTURE_TYPE_I; | |
| 53 | ||
| 54 | y = pic->data[0]; | |
| 55 | u = pic->data[1]; | |
| 56 | v = pic->data[2]; | |
| 57 | ||
| 58 | for (i = 0; i < avctx->height; i++) { | |
| 59 | for (j = 0; j < avctx->width; j++) { | |
| 60 | v[j] = *src++; | |
| 61 | y[j] = *src++; | |
| 62 | u[j] = *src++; | |
| 63 | } | |
| 64 | ||
| 65 | y += pic->linesize[0]; | |
| 66 | u += pic->linesize[1]; | |
| 67 | v += pic->linesize[2]; | |
| 68 | } | |
| 69 | ||
| 70 | *got_frame = 1; | |
| 71 | ||
| 72 | return avpkt->size; | |
| 73 | } | |
| 74 | ||
| 75 | AVCodec ff_v308_decoder = { | |
| 76 | .name = "v308", | |
| 77 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), | |
| 78 | .type = AVMEDIA_TYPE_VIDEO, | |
| 79 | .id = AV_CODEC_ID_V308, | |
| 80 | .init = v308_decode_init, | |
| 81 | .decode = v308_decode_frame, | |
| 82 | .capabilities = CODEC_CAP_DR1, | |
| 83 | }; |