[deb_ffmpeg.git] / ffmpeg / libavcodec / v210x.c

/*
 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
 *
 * 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"
#include "libavutil/bswap.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"

static av_cold int decode_init(AVCodecContext *avctx)
{
    if (avctx->width & 1) {
        av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
        return AVERROR(EINVAL);
    }
    avctx->pix_fmt             = AV_PIX_FMT_YUV422P16;
    avctx->bits_per_raw_sample = 10;

    return 0;
}

static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
                        AVPacket *avpkt)
{
    const uint32_t *src = (const uint32_t *)avpkt->data;
    AVFrame *pic        = data;
    int width           = avctx->width;
    int y               = 0;
    uint16_t *ydst, *udst, *vdst, *yend;
    int ret;

    if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
        av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
        return AVERROR_INVALIDDATA;
    }

    if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
        avpriv_request_sample(avctx, "(Probably) padded data");
    }

    if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
        return ret;

    ydst = (uint16_t *)pic->data[0];
    udst = (uint16_t *)pic->data[1];
    vdst = (uint16_t *)pic->data[2];
    yend = ydst + width;
    pic->pict_type = AV_PICTURE_TYPE_I;
    pic->key_frame = 1;

    for (;;) {
        uint32_t v = av_be2ne32(*src++);
        *udst++ = (v >> 16) & 0xFFC0;
        *ydst++ = (v >> 6 ) & 0xFFC0;
        *vdst++ = (v << 4 ) & 0xFFC0;

        v       = av_be2ne32(*src++);
        *ydst++ = (v >> 16) & 0xFFC0;

        if (ydst >= yend) {
            ydst += pic->linesize[0] / 2 - width;
            udst += pic->linesize[1] / 2 - width / 2;
            vdst += pic->linesize[2] / 2 - width / 2;
            yend = ydst + width;
            if (++y >= avctx->height)
                break;
        }

        *udst++ = (v >> 6 ) & 0xFFC0;
        *ydst++ = (v << 4 ) & 0xFFC0;

        v = av_be2ne32(*src++);
        *vdst++ = (v >> 16) & 0xFFC0;
        *ydst++ = (v >> 6 ) & 0xFFC0;

        if (ydst >= yend) {
            ydst += pic->linesize[0] / 2 - width;
            udst += pic->linesize[1] / 2 - width / 2;
            vdst += pic->linesize[2] / 2 - width / 2;
            yend  = ydst + width;
            if (++y >= avctx->height)
                break;
        }

        *udst++ = (v << 4 ) & 0xFFC0;

        v = av_be2ne32(*src++);
        *ydst++ = (v >> 16) & 0xFFC0;
        *vdst++ = (v >> 6 ) & 0xFFC0;
        *ydst++ = (v << 4 ) & 0xFFC0;
        if (ydst >= yend) {
            ydst += pic->linesize[0] / 2 - width;
            udst += pic->linesize[1] / 2 - width / 2;
            vdst += pic->linesize[2] / 2 - width / 2;
            yend  = ydst + width;
            if (++y >= avctx->height)
                break;
        }
    }

    *got_frame = 1;

    return avpkt->size;
}

AVCodec ff_v210x_decoder = {
    .name           = "v210x",
    .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_V210X,
    .init           = decode_init,
    .decode         = decode_frame,
    .capabilities   = CODEC_CAP_DR1,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include "avcodec.h"
	22	#include "internal.h"
	23	#include "libavutil/bswap.h"
	24	#include "libavutil/internal.h"
	25	#include "libavutil/mem.h"
	26
	27	static av_cold int decode_init(AVCodecContext *avctx)
	28	{
	29	if (avctx->width & 1) {
	30	av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
	31	return AVERROR(EINVAL);
	32	}
	33	avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
	34	avctx->bits_per_raw_sample = 10;
	35
	36	return 0;
	37	}
	38
	39	static int decode_frame(AVCodecContext avctx, void data, int *got_frame,
	40	AVPacket *avpkt)
	41	{
	42	const uint32_t src = (const uint32_t )avpkt->data;
	43	AVFrame *pic = data;
	44	int width = avctx->width;
	45	int y = 0;
	46	uint16_t ydst, udst, vdst, yend;
	47	int ret;
	48
	49	if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
	50	av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
	51	return AVERROR_INVALIDDATA;
	52	}
	53
	54	if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
	55	avpriv_request_sample(avctx, "(Probably) padded data");
	56	}
	57
	58	if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
	59	return ret;
	60
	61	ydst = (uint16_t *)pic->data[0];
	62	udst = (uint16_t *)pic->data[1];
	63	vdst = (uint16_t *)pic->data[2];
	64	yend = ydst + width;
65	pic->pict_type = AV_PICTURE_TYPE_I;
66	pic->key_frame = 1;
67
68	for (;;) {
69	uint32_t v = av_be2ne32(*src++);
70	*udst++ = (v >> 16) & 0xFFC0;
71	*ydst++ = (v >> 6 ) & 0xFFC0;
72	*vdst++ = (v << 4 ) & 0xFFC0;
73
74	v = av_be2ne32(*src++);
75	*ydst++ = (v >> 16) & 0xFFC0;
76
77	if (ydst >= yend) {
78	ydst += pic->linesize[0] / 2 - width;
79	udst += pic->linesize[1] / 2 - width / 2;
80	vdst += pic->linesize[2] / 2 - width / 2;
81	yend = ydst + width;
82	if (++y >= avctx->height)
83	break;
84	}
85
86	*udst++ = (v >> 6 ) & 0xFFC0;
87	*ydst++ = (v << 4 ) & 0xFFC0;
88
89	v = av_be2ne32(*src++);
90	*vdst++ = (v >> 16) & 0xFFC0;
91	*ydst++ = (v >> 6 ) & 0xFFC0;
92
93	if (ydst >= yend) {
94	ydst += pic->linesize[0] / 2 - width;
95	udst += pic->linesize[1] / 2 - width / 2;
96	vdst += pic->linesize[2] / 2 - width / 2;
97	yend = ydst + width;
98	if (++y >= avctx->height)
99	break;
100	}
101
102	*udst++ = (v << 4 ) & 0xFFC0;
103
104	v = av_be2ne32(*src++);
105	*ydst++ = (v >> 16) & 0xFFC0;
106	*vdst++ = (v >> 6 ) & 0xFFC0;
107	*ydst++ = (v << 4 ) & 0xFFC0;
108	if (ydst >= yend) {
109	ydst += pic->linesize[0] / 2 - width;
110	udst += pic->linesize[1] / 2 - width / 2;
111	vdst += pic->linesize[2] / 2 - width / 2;
112	yend = ydst + width;
113	if (++y >= avctx->height)
114	break;
115	}
116	}
117
118	*got_frame = 1;
119
120	return avpkt->size;
121	}
122
123	AVCodec ff_v210x_decoder = {
124	.name = "v210x",
125	.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
126	.type = AVMEDIA_TYPE_VIDEO,
127	.id = AV_CODEC_ID_V210X,
128	.init = decode_init,
129	.decode = decode_frame,
130	.capabilities = CODEC_CAP_DR1,
131	};