From bb9c8d9439ce522f978d8a77888b14f2060a7e91 Mon Sep 17 00:00:00 2001 From: Carl Eugen Hoyos Date: Sun, 5 Feb 2012 20:43:33 +0100 Subject: Add v408 / AYUV encoder and decoder. Fixes last part of ticket #470. Reviewed-by: Paul B Mahol --- libavcodec/v408dec.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 libavcodec/v408dec.c (limited to 'libavcodec/v408dec.c') diff --git a/libavcodec/v408dec.c b/libavcodec/v408dec.c new file mode 100644 index 0000000..be15aa1 --- /dev/null +++ b/libavcodec/v408dec.c @@ -0,0 +1,127 @@ +/* + * 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" + +static av_cold int v408_decode_init(AVCodecContext *avctx) +{ + avctx->pix_fmt = PIX_FMT_YUVA444P; + + avctx->coded_frame = avcodec_alloc_frame(); + + if (!avctx->coded_frame) { + av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); + return AVERROR(ENOMEM); + } + + return 0; +} + +static int v408_decode_frame(AVCodecContext *avctx, void *data, + int *data_size, AVPacket *avpkt) +{ + AVFrame *pic = avctx->coded_frame; + const uint8_t *src = avpkt->data; + uint8_t *y, *u, *v, *a; + int i, j; + + if (pic->data[0]) + avctx->release_buffer(avctx, pic); + + if (avpkt->size < 4 * avctx->height * avctx->width) { + av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); + return AVERROR(EINVAL); + } + + pic->reference = 0; + + if (avctx->get_buffer(avctx, pic) < 0) { + av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n"); + return AVERROR(ENOMEM); + } + + 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==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]; + } + + *data_size = sizeof(AVFrame); + *(AVFrame *)data = *pic; + + return avpkt->size; +} + +static av_cold int v408_decode_close(AVCodecContext *avctx) +{ + if (avctx->coded_frame->data[0]) + avctx->release_buffer(avctx, avctx->coded_frame); + + av_freep(&avctx->coded_frame); + + return 0; +} + +AVCodec ff_ayuv_decoder = { + .name = "ayuv", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_AYUV, + .init = v408_decode_init, + .decode = v408_decode_frame, + .close = v408_decode_close, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"), +}; + +AVCodec ff_v408_decoder = { + .name = "v408", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_V408, + .init = v408_decode_init, + .decode = v408_decode_frame, + .close = v408_decode_close, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), +}; + -- cgit v1.1