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FFmpeg/libavcodec/eatqi.c
Michael Niedermayer ee77140afa Merge commit 'b2bed9325dbd6be0da1d91ffed3f513c40274fd2'
* commit 'b2bed9325dbd6be0da1d91ffed3f513c40274fd2':
  cosmetics: Group .name and .long_name together in codec/format declarations

Conflicts:
	libavcodec/8svx.c
	libavcodec/alac.c
	libavcodec/cljr.c
	libavcodec/dnxhddec.c
	libavcodec/dnxhdenc.c
	libavcodec/dpxenc.c
	libavcodec/dvdec.c
	libavcodec/dvdsubdec.c
	libavcodec/dvdsubenc.c
	libavcodec/ffv1dec.c
	libavcodec/flacdec.c
	libavcodec/flvdec.c
	libavcodec/fraps.c
	libavcodec/frwu.c
	libavcodec/g726.c
	libavcodec/gif.c
	libavcodec/gifdec.c
	libavcodec/h261dec.c
	libavcodec/h263dec.c
	libavcodec/iff.c
	libavcodec/imc.c
	libavcodec/libopencore-amr.c
	libavcodec/libopenjpegdec.c
	libavcodec/libopenjpegenc.c
	libavcodec/libspeexenc.c
	libavcodec/libvo-amrwbenc.c
	libavcodec/libvorbisenc.c
	libavcodec/libvpxenc.c
	libavcodec/libx264.c
	libavcodec/libxavs.c
	libavcodec/libxvid.c
	libavcodec/ljpegenc.c
	libavcodec/mjpegbdec.c
	libavcodec/mjpegdec.c
	libavcodec/mpeg12dec.c
	libavcodec/mpeg4videodec.c
	libavcodec/msmpeg4dec.c
	libavcodec/pgssubdec.c
	libavcodec/pngdec.c
	libavcodec/pngenc.c
	libavcodec/proresdec_lgpl.c
	libavcodec/proresenc_kostya.c
	libavcodec/ra144enc.c
	libavcodec/rawdec.c
	libavcodec/rv10.c
	libavcodec/sp5xdec.c
	libavcodec/takdec.c
	libavcodec/tta.c
	libavcodec/v210dec.c
	libavcodec/vp6.c
	libavcodec/wavpack.c
	libavcodec/xbmenc.c
	libavcodec/yop.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-10-04 12:34:23 +02:00

159 lines
5.1 KiB
C

/*
* Electronic Arts TQI Video Decoder
* Copyright (c) 2007-2009 Peter Ross <pross@xvid.org>
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Electronic Arts TQI Video Decoder
* @author Peter Ross <pross@xvid.org>
* @see http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TQI
*/
#include "avcodec.h"
#include "get_bits.h"
#include "aandcttab.h"
#include "eaidct.h"
#include "internal.h"
#include "mpeg12.h"
#include "mpegvideo.h"
typedef struct TqiContext {
MpegEncContext s;
void *bitstream_buf;
unsigned int bitstream_buf_size;
DECLARE_ALIGNED(16, int16_t, block)[6][64];
} TqiContext;
static av_cold int tqi_decode_init(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
MpegEncContext *s = &t->s;
s->avctx = avctx;
ff_dsputil_init(&s->dsp, avctx);
ff_init_scantable_permutation(s->dsp.idct_permutation, FF_NO_IDCT_PERM);
ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
s->qscale = 1;
avctx->time_base = (AVRational){1, 15};
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
static int tqi_decode_mb(MpegEncContext *s, int16_t (*block)[64])
{
int n;
s->dsp.clear_blocks(block[0]);
for (n=0; n<6; n++)
if (ff_mpeg1_decode_block_intra(s, block[n], n) < 0)
return -1;
return 0;
}
static inline void tqi_idct_put(TqiContext *t, AVFrame *frame, int16_t (*block)[64])
{
MpegEncContext *s = &t->s;
int linesize = frame->linesize[0];
uint8_t *dest_y = frame->data[0] + (s->mb_y * 16* linesize ) + s->mb_x * 16;
uint8_t *dest_cb = frame->data[1] + (s->mb_y * 8 * frame->linesize[1]) + s->mb_x * 8;
uint8_t *dest_cr = frame->data[2] + (s->mb_y * 8 * frame->linesize[2]) + s->mb_x * 8;
ff_ea_idct_put_c(dest_y , linesize, block[0]);
ff_ea_idct_put_c(dest_y + 8, linesize, block[1]);
ff_ea_idct_put_c(dest_y + 8*linesize , linesize, block[2]);
ff_ea_idct_put_c(dest_y + 8*linesize + 8, linesize, block[3]);
if(!(s->avctx->flags&CODEC_FLAG_GRAY)) {
ff_ea_idct_put_c(dest_cb, frame->linesize[1], block[4]);
ff_ea_idct_put_c(dest_cr, frame->linesize[2], block[5]);
}
}
static void tqi_calculate_qtable(MpegEncContext *s, int quant)
{
const int qscale = (215 - 2*quant)*5;
int i;
s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11;
for(i=1; i<64; i++)
s->intra_matrix[i] = (ff_inv_aanscales[i]*ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>14;
}
static int tqi_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
TqiContext *t = avctx->priv_data;
MpegEncContext *s = &t->s;
AVFrame *frame = data;
int ret;
s->width = AV_RL16(&buf[0]);
s->height = AV_RL16(&buf[2]);
tqi_calculate_qtable(s, buf[4]);
buf += 8;
if (s->avctx->width!=s->width || s->avctx->height!=s->height)
avcodec_set_dimensions(s->avctx, s->width, s->height);
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
av_fast_padded_malloc(&t->bitstream_buf, &t->bitstream_buf_size,
buf_end - buf);
if (!t->bitstream_buf)
return AVERROR(ENOMEM);
s->dsp.bswap_buf(t->bitstream_buf, (const uint32_t*)buf, (buf_end-buf)/4);
init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf));
s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0;
for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++)
for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++)
{
if (tqi_decode_mb(s, t->block) < 0)
goto end;
tqi_idct_put(t, frame, t->block);
}
end:
*got_frame = 1;
return buf_size;
}
static av_cold int tqi_decode_end(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
av_free(t->bitstream_buf);
return 0;
}
AVCodec ff_eatqi_decoder = {
.name = "eatqi",
.long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TQI Video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_TQI,
.priv_data_size = sizeof(TqiContext),
.init = tqi_decode_init,
.close = tqi_decode_end,
.decode = tqi_decode_frame,
.capabilities = CODEC_CAP_DR1,
};