diff options
Diffstat (limited to 'libavcodec/v408dec.c')
| -rw-r--r-- | libavcodec/v408dec.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/libavcodec/v408dec.c b/libavcodec/v408dec.c new file mode 100644 index 0000000000..196c575c09 --- /dev/null +++ b/libavcodec/v408dec.c @@ -0,0 +1,105 @@ +/* + * v408 decoder + * Copyright (c) 2012 Carl Eugen Hoyos + * + * 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" + +static av_cold int v408_decode_init(AVCodecContext *avctx) +{ + avctx->pix_fmt = AV_PIX_FMT_YUVA444P; + + return 0; +} + +static int v408_decode_frame(AVCodecContext *avctx, void *data, + int *got_frame, AVPacket *avpkt) +{ + AVFrame *pic = data; + const uint8_t *src = avpkt->data; + uint8_t *y, *u, *v, *a; + int i, j, ret; + + if (avpkt->size < 4 * avctx->height * avctx->width) { + av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); + return AVERROR(EINVAL); + } + + if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) + return ret; + + pic->key_frame = 1; + pic->pict_type = AV_PICTURE_TYPE_I; + + y = pic->data[0]; + u = pic->data[1]; + v = pic->data[2]; + a = pic->data[3]; + + for (i = 0; i < avctx->height; i++) { + for (j = 0; j < avctx->width; j++) { + if (avctx->codec_id==AV_CODEC_ID_AYUV) { + v[j] = *src++; + u[j] = *src++; + y[j] = *src++; + a[j] = *src++; + } else { + u[j] = *src++; + y[j] = *src++; + v[j] = *src++; + a[j] = *src++; + } + } + + y += pic->linesize[0]; + u += pic->linesize[1]; + v += pic->linesize[2]; + a += pic->linesize[3]; + } + + *got_frame = 1; + + return avpkt->size; +} + +#if CONFIG_AYUV_DECODER +AVCodec ff_ayuv_decoder = { + .name = "ayuv", + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_AYUV, + .init = v408_decode_init, + .decode = v408_decode_frame, + .capabilities = AV_CODEC_CAP_DR1, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, +}; +#endif +#if CONFIG_V408_DECODER +AVCodec ff_v408_decoder = { + .name = "v408", + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_V408, + .init = v408_decode_init, + .decode = v408_decode_frame, + .capabilities = AV_CODEC_CAP_DR1, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, +}; +#endif |