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/v410enc.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 libavcodec/v410enc.c (limited to 'libavcodec/v410enc.c') diff --git a/libavcodec/v410enc.c b/libavcodec/v410enc.c new file mode 100644 index 0000000000..1e600c35b6 --- /dev/null +++ b/libavcodec/v410enc.c @@ -0,0 +1,99 @@ +/* + * v410 encoder + * + * 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 "put_bits.h" + +static av_cold int v410_encode_init(AVCodecContext *avctx) +{ + 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_encode_frame(AVCodecContext *avctx, uint8_t *buf, + int buf_size, void *data) +{ + AVFrame *pic = data; + uint8_t *dst = buf; + uint16_t *y, *u, *v; + uint32_t val; + int i, j; + int output_size = 0; + + if (buf_size < avctx->width * avctx->height * 3) { + av_log(avctx, AV_LOG_ERROR, "Out buffer is too small.\n"); + return AVERROR(ENOMEM); + } + + avctx->coded_frame->reference = 0; + avctx->coded_frame->key_frame = 1; + avctx->coded_frame->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 = u[j] << 2; + val |= y[j] << 12; + val |= v[j] << 22; + AV_WL32(dst, val); + dst += 4; + output_size += 4; + } + y += pic->linesize[0] >> 1; + u += pic->linesize[1] >> 1; + v += pic->linesize[2] >> 1; + } + + return output_size; +} + +static av_cold int v410_encode_close(AVCodecContext *avctx) +{ + av_freep(&avctx->coded_frame); + + return 0; +} + +AVCodec ff_v410_encoder = { + .name = "v410", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_V410, + .init = v410_encode_init, + .encode = v410_encode_frame, + .close = v410_encode_close, + .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV444P10, PIX_FMT_NONE }, + .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"), +}; -- cgit v1.2.3