2003-07-27 23:20:31 +03:00
|
|
|
/*
|
|
|
|
* Cirrus Logic AccuPak (CLJR) codec
|
|
|
|
* Copyright (c) 2003 Alex Beregszaszi
|
|
|
|
*
|
2006-10-07 18:30:46 +03:00
|
|
|
* This file is part of FFmpeg.
|
|
|
|
*
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2003-07-27 23:20:31 +03:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 18:30:46 +03:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2003-07-27 23:20:31 +03:00
|
|
|
*
|
2006-10-07 18:30:46 +03:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2003-07-27 23:20:31 +03:00
|
|
|
* 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
|
2006-10-07 18:30:46 +03:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-13 00:43:26 +02:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2003-07-27 23:20:31 +03:00
|
|
|
*/
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2003-07-27 23:20:31 +03:00
|
|
|
/**
|
2010-04-20 17:45:34 +03:00
|
|
|
* @file
|
2003-07-27 23:20:31 +03:00
|
|
|
* Cirrus Logic AccuPak codec.
|
|
|
|
*/
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2003-07-27 23:20:31 +03:00
|
|
|
#include "avcodec.h"
|
2011-12-09 08:01:15 +03:00
|
|
|
#include "libavutil/opt.h"
|
2009-04-13 19:20:26 +03:00
|
|
|
#include "get_bits.h"
|
2012-02-11 22:39:12 +03:00
|
|
|
#include "internal.h"
|
2011-12-08 03:05:23 +03:00
|
|
|
#include "put_bits.h"
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
typedef struct CLJRContext {
|
2011-12-09 08:01:15 +03:00
|
|
|
AVClass *avclass;
|
2011-12-08 17:51:38 +03:00
|
|
|
AVFrame picture;
|
2011-12-09 08:01:15 +03:00
|
|
|
int dither_type;
|
2003-07-27 23:20:31 +03:00
|
|
|
} CLJRContext;
|
|
|
|
|
2011-12-08 17:48:12 +03:00
|
|
|
static av_cold int common_init(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
CLJRContext * const a = avctx->priv_data;
|
|
|
|
|
2011-12-09 02:05:51 +03:00
|
|
|
avcodec_get_frame_defaults(&a->picture);
|
2011-12-08 17:50:48 +03:00
|
|
|
avctx->coded_frame = &a->picture;
|
2011-12-08 17:48:12 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if CONFIG_CLJR_DECODER
|
2005-12-17 20:14:38 +02:00
|
|
|
static int decode_frame(AVCodecContext *avctx,
|
2003-07-27 23:20:31 +03:00
|
|
|
void *data, int *data_size,
|
2009-04-07 18:59:50 +03:00
|
|
|
AVPacket *avpkt)
|
2003-07-27 23:20:31 +03:00
|
|
|
{
|
2009-04-07 18:59:50 +03:00
|
|
|
const uint8_t *buf = avpkt->data;
|
2011-12-08 17:51:38 +03:00
|
|
|
int buf_size = avpkt->size;
|
2003-07-27 23:20:31 +03:00
|
|
|
CLJRContext * const a = avctx->priv_data;
|
2011-12-06 20:45:37 +03:00
|
|
|
GetBitContext gb;
|
2003-07-27 23:20:31 +03:00
|
|
|
AVFrame *picture = data;
|
2011-12-08 17:50:48 +03:00
|
|
|
AVFrame * const p = &a->picture;
|
2003-08-25 01:08:22 +03:00
|
|
|
int x, y;
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
if (p->data[0])
|
2003-07-27 23:20:31 +03:00
|
|
|
avctx->release_buffer(avctx, p);
|
|
|
|
|
2011-12-16 02:20:21 +03:00
|
|
|
if (avctx->height <= 0 || avctx->width <= 0) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid width or height\n");
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
if (buf_size / avctx->height < avctx->width) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
|
|
"Resolution larger than buffer size. Invalid header?\n");
|
2011-12-08 17:53:27 +03:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-01-07 23:54:52 +02:00
|
|
|
}
|
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
p->reference = 0;
|
|
|
|
if (avctx->get_buffer(avctx, p) < 0) {
|
2003-11-03 15:26:22 +02:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
2003-07-27 23:20:31 +03:00
|
|
|
return -1;
|
|
|
|
}
|
2011-12-08 17:51:38 +03:00
|
|
|
p->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
p->key_frame = 1;
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2011-12-06 20:45:37 +03:00
|
|
|
init_get_bits(&gb, buf, buf_size * 8);
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
for (y = 0; y < avctx->height; y++) {
|
|
|
|
uint8_t *luma = &a->picture.data[0][y * a->picture.linesize[0]];
|
|
|
|
uint8_t *cb = &a->picture.data[1][y * a->picture.linesize[1]];
|
|
|
|
uint8_t *cr = &a->picture.data[2][y * a->picture.linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x += 4) {
|
2011-12-28 23:46:57 +03:00
|
|
|
luma[3] = (get_bits(&gb, 5)*33) >> 2;
|
|
|
|
luma[2] = (get_bits(&gb, 5)*33) >> 2;
|
|
|
|
luma[1] = (get_bits(&gb, 5)*33) >> 2;
|
|
|
|
luma[0] = (get_bits(&gb, 5)*33) >> 2;
|
2011-12-08 17:51:38 +03:00
|
|
|
luma += 4;
|
2011-12-06 20:45:37 +03:00
|
|
|
*(cb++) = get_bits(&gb, 6) << 2;
|
|
|
|
*(cr++) = get_bits(&gb, 6) << 2;
|
2003-07-27 23:20:31 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-12-08 17:51:38 +03:00
|
|
|
*picture = a->picture;
|
2003-07-27 23:20:31 +03:00
|
|
|
*data_size = sizeof(AVPicture);
|
|
|
|
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
2011-12-08 17:48:12 +03:00
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
avctx->pix_fmt = PIX_FMT_YUV411P;
|
|
|
|
return common_init(avctx);
|
2003-07-27 23:20:31 +03:00
|
|
|
}
|
|
|
|
|
2011-12-08 17:48:12 +03:00
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
CLJRContext *a = avctx->priv_data;
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2011-12-08 17:48:12 +03:00
|
|
|
if (a->picture.data[0])
|
|
|
|
avctx->release_buffer(avctx, &a->picture);
|
2003-07-27 23:20:31 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-25 23:40:11 +02:00
|
|
|
AVCodec ff_cljr_decoder = {
|
2011-07-17 13:54:31 +03:00
|
|
|
.name = "cljr",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 12:11:04 +03:00
|
|
|
.id = AV_CODEC_ID_CLJR,
|
2011-07-17 13:54:31 +03:00
|
|
|
.priv_data_size = sizeof(CLJRContext),
|
|
|
|
.init = decode_init,
|
2011-12-08 17:48:12 +03:00
|
|
|
.close = decode_end,
|
2011-07-17 13:54:31 +03:00
|
|
|
.decode = decode_frame,
|
|
|
|
.capabilities = CODEC_CAP_DR1,
|
2011-12-08 17:48:12 +03:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
|
2003-07-27 23:20:31 +03:00
|
|
|
};
|
2011-12-08 17:48:12 +03:00
|
|
|
#endif
|
2008-09-03 15:43:18 +03:00
|
|
|
|
2009-01-14 01:44:16 +02:00
|
|
|
#if CONFIG_CLJR_ENCODER
|
2012-02-11 22:39:12 +03:00
|
|
|
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
|
|
const AVFrame *p, int *got_packet)
|
2011-12-08 17:51:38 +03:00
|
|
|
{
|
2011-12-09 08:01:15 +03:00
|
|
|
CLJRContext *a = avctx->priv_data;
|
2011-12-08 03:05:23 +03:00
|
|
|
PutBitContext pb;
|
2012-02-11 22:39:12 +03:00
|
|
|
int x, y, ret;
|
2011-12-09 03:11:06 +03:00
|
|
|
uint32_t dither= avctx->frame_number;
|
2011-12-09 20:32:29 +03:00
|
|
|
static const uint32_t ordered_dither[2][2] =
|
|
|
|
{
|
|
|
|
{ 0x10400000, 0x104F0000 },
|
|
|
|
{ 0xCB2A0000, 0xCB250000 },
|
|
|
|
};
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2012-03-22 23:22:39 +03:00
|
|
|
if ((ret = ff_alloc_packet2(avctx, pkt, 32*avctx->height*avctx->width/4)) < 0)
|
2012-02-11 22:39:12 +03:00
|
|
|
return ret;
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2012-02-11 22:37:41 +03:00
|
|
|
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
avctx->coded_frame->key_frame = 1;
|
2003-07-27 23:20:31 +03:00
|
|
|
|
2012-02-11 22:39:12 +03:00
|
|
|
init_put_bits(&pb, pkt->data, pkt->size);
|
2011-12-08 03:05:23 +03:00
|
|
|
|
|
|
|
for (y = 0; y < avctx->height; y++) {
|
|
|
|
uint8_t *luma = &p->data[0][y * p->linesize[0]];
|
|
|
|
uint8_t *cb = &p->data[1][y * p->linesize[1]];
|
|
|
|
uint8_t *cr = &p->data[2][y * p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x += 4) {
|
2011-12-09 08:01:15 +03:00
|
|
|
switch (a->dither_type) {
|
|
|
|
case 0: dither = 0x492A0000; break;
|
|
|
|
case 1: dither = dither * 1664525 + 1013904223; break;
|
2011-12-09 20:32:29 +03:00
|
|
|
case 2: dither = ordered_dither[ y&1 ][ (x>>2)&1 ];break;
|
2011-12-09 08:01:15 +03:00
|
|
|
}
|
2011-12-28 23:29:03 +03:00
|
|
|
put_bits(&pb, 5, (249*(luma[3] + (dither>>29) )) >> 11);
|
|
|
|
put_bits(&pb, 5, (249*(luma[2] + ((dither>>26)&7))) >> 11);
|
|
|
|
put_bits(&pb, 5, (249*(luma[1] + ((dither>>23)&7))) >> 11);
|
|
|
|
put_bits(&pb, 5, (249*(luma[0] + ((dither>>20)&7))) >> 11);
|
2011-12-08 03:05:23 +03:00
|
|
|
luma += 4;
|
2011-12-28 23:29:03 +03:00
|
|
|
put_bits(&pb, 6, (253*(*(cb++) + ((dither>>18)&3))) >> 10);
|
|
|
|
put_bits(&pb, 6, (253*(*(cr++) + ((dither>>16)&3))) >> 10);
|
2011-12-08 03:05:23 +03:00
|
|
|
}
|
|
|
|
}
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2011-12-08 03:05:23 +03:00
|
|
|
flush_put_bits(&pb);
|
2005-12-17 20:14:38 +02:00
|
|
|
|
2012-02-11 22:39:12 +03:00
|
|
|
pkt->size = put_bits_count(&pb) / 8;
|
|
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
|
|
*got_packet = 1;
|
|
|
|
return 0;
|
2003-07-27 23:20:31 +03:00
|
|
|
}
|
|
|
|
|
2011-12-09 08:01:15 +03:00
|
|
|
#define OFFSET(x) offsetof(CLJRContext, x)
|
|
|
|
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
|
|
static const AVOption options[] = {
|
|
|
|
{ "dither_type", "Dither type", OFFSET(dither_type), AV_OPT_TYPE_INT, { .dbl=1 }, 0, 2, VE},
|
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVClass class = {
|
|
|
|
.class_name = "cljr encoder",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
};
|
|
|
|
|
2011-01-25 23:40:11 +02:00
|
|
|
AVCodec ff_cljr_encoder = {
|
2011-07-17 13:54:31 +03:00
|
|
|
.name = "cljr",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 12:11:04 +03:00
|
|
|
.id = AV_CODEC_ID_CLJR,
|
2011-07-17 13:54:31 +03:00
|
|
|
.priv_data_size = sizeof(CLJRContext),
|
2011-12-08 17:48:12 +03:00
|
|
|
.init = common_init,
|
2012-02-11 22:39:12 +03:00
|
|
|
.encode2 = encode_frame,
|
2011-12-08 03:05:23 +03:00
|
|
|
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV411P,
|
|
|
|
PIX_FMT_NONE },
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
|
2011-12-09 08:01:15 +03:00
|
|
|
.priv_class = &class,
|
2003-07-27 23:20:31 +03:00
|
|
|
};
|
2008-09-03 15:33:21 +03:00
|
|
|
#endif
|