From 80f6c0bb95bb90f599b0c76c0fbac5454eff3b2f Mon Sep 17 00:00:00 2001 From: Derek Buitenhuis Date: Tue, 13 Dec 2011 14:33:48 -0500 Subject: v410 encoder and decoder v410 is a packed 10-bit 4:4:4 YCbCr format used in QuickTime. Signed-off-by: Derek Buitenhuis Signed-off-by: Diego Biurrun --- libavcodec/v410dec.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 libavcodec/v410dec.c (limited to 'libavcodec/v410dec.c') diff --git a/libavcodec/v410dec.c b/libavcodec/v410dec.c new file mode 100644 index 0000000000..5df95f8beb --- /dev/null +++ b/libavcodec/v410dec.c @@ -0,0 +1,113 @@ +/* + * v410 decoder + * + * Copyright (c) 2011 Derek Buitenhuis + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avcodec.h" +#include "get_bits.h" + +static av_cold int v410_decode_init(AVCodecContext *avctx) +{ + avctx->pix_fmt = PIX_FMT_YUV444P10; + avctx->bits_per_raw_sample = 10; + + if (avctx->width & 1) { + av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n"); + return AVERROR_INVALIDDATA; + } + + 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 v410_decode_frame(AVCodecContext *avctx, void *data, + int *data_size, AVPacket *avpkt) +{ + AVFrame *pic = avctx->coded_frame; + uint8_t *src = avpkt->data; + uint16_t *y, *u, *v; + uint32_t val; + int i, j; + + if (pic->data[0]) + avctx->release_buffer(avctx, pic); + + 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 = FF_I_TYPE; + + y = (uint16_t *)pic->data[0]; + u = (uint16_t *)pic->data[1]; + v = (uint16_t *)pic->data[2]; + + for (i = 0; i < avctx->height; i++) { + for (j = 0; j < avctx->width; j++) { + val = AV_RL32(src); + + u[j] = (val >> 2) & 0x3FF; + y[j] = (val >> 12) & 0x3FF; + v[j] = (val >> 22); + + src += 4; + } + + y += pic->linesize[0] >> 1; + u += pic->linesize[1] >> 1; + v += pic->linesize[2] >> 1; + } + + *data_size = sizeof(AVFrame); + *(AVFrame *)data = *pic; + + return avpkt->size; +} + +static av_cold int v410_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_v410_decoder = { + .name = "v410", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_V410, + .init = v410_decode_init, + .decode = v410_decode_frame, + .close = v410_decode_close, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"), +}; -- cgit v1.2.3