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/************************************************************************** |
/************************************************************************** |
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* |
* |
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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* decoder main |
* - Decoder main module - |
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* |
* |
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* This program is an implementation of a part of one or more MPEG-4 |
* This program is an implementation of a part of one or more MPEG-4 |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* |
* |
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* You should have received a copy of the GNU General Public License |
* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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*************************************************************************/ |
*************************************************************************/ |
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* |
* |
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* History: |
* History: |
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* |
* |
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* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
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* 29.03.2002 interlacing fix - compensated block wasn't being used when |
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* reconstructing blocks, thus artifacts |
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* interlacing speedup - used transfers to re-interlace |
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* interlaced decoding should be as fast as progressive now |
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* 26.03.2002 interlacing support - moved transfers outside decode loop |
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* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
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* 22.12.2001 block based interpolation |
* 22.12.2001 lock based interpolation |
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* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
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* |
* |
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* $Id$ |
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* |
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*************************************************************************/ |
*************************************************************************/ |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include <string.h> // memset |
#include <string.h> |
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#include "xvid.h" |
#include "xvid.h" |
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#include "portab.h" |
#include "portab.h" |
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#include "image/image.h" |
#include "image/image.h" |
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#include "image/colorspace.h" |
#include "image/colorspace.h" |
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#include "utils/mem_align.h" |
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|
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int decoder_create(XVID_DEC_PARAM * param) |
int decoder_create(XVID_DEC_PARAM * param) |
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{ |
{ |
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DECODER * dec; |
DECODER * dec; |
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|
|
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dec = malloc(sizeof(DECODER)); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
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if (dec == NULL) |
if (dec == NULL) |
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{ |
{ |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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|
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if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
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{ |
{ |
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free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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|
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if (image_create(&dec->refn, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
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{ |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
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return XVID_ERR_MEMORY; |
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} |
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// add by chenm001 <chenm001@163.com> |
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// for support B-frame to reference last 2 frame |
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if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) |
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{ |
{ |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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free(dec); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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dec->mbs = malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
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if (dec->mbs == NULL) |
if (dec->mbs == NULL) |
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{ |
{ |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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init_timer(); |
init_timer(); |
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create_vlc_tables(); |
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return XVID_ERR_OK; |
return XVID_ERR_OK; |
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} |
} |
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int decoder_destroy(DECODER * dec) |
int decoder_destroy(DECODER * dec) |
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{ |
{ |
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free(dec->mbs); |
xvid_free(dec->mbs); |
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image_destroy(&dec->refn, dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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free(dec); |
xvid_free(dec); |
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destroy_vlc_tables(); |
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write_timer(); |
write_timer(); |
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return XVID_ERR_OK; |
return XVID_ERR_OK; |
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// decode an intra macroblock |
// decode an intra macroblock |
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void decoder_mbintra(DECODER * dec, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int intra_dc_threshold) |
void decoder_mbintra(DECODER * dec, |
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{ |
MACROBLOCK * pMB, |
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uint32_t k; |
const uint32_t x_pos, |
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const uint32_t y_pos, |
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const uint32_t acpred_flag, |
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const uint32_t cbp, |
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Bitstream * bs, |
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const uint32_t quant, |
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const uint32_t intra_dc_threshold) |
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{ |
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DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
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DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
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uint32_t stride = dec->edged_width; |
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uint32_t stride2 = stride / 2; |
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uint32_t next_block = stride * 8; |
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uint32_t i; |
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uint32_t iQuant = pMB->quant; |
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uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
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pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
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pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
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pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
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memset(block, 0, 6*64*sizeof(int16_t)); // clear |
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|
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for (k = 0; k < 6; k++) |
for (i = 0; i < 6; i++) |
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{ |
{ |
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uint32_t dcscalar; |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
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int16_t block[64]; |
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int16_t data[64]; |
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int16_t predictors[8]; |
int16_t predictors[8]; |
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int start_coeff; |
int start_coeff; |
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dcscalar = get_dc_scaler(mb->quant, k < 4); |
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start_timer(); |
start_timer(); |
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predict_acdc(dec->mbs, x, y, dec->mb_width, k, block, mb->quant, dcscalar, predictors); |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i*64], iQuant, iDcScaler, predictors); |
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if (!acpred_flag) |
if (!acpred_flag) |
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{ |
{ |
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mb->acpred_directions[k] = 0; |
pMB->acpred_directions[i] = 0; |
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} |
} |
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stop_prediction_timer(); |
stop_prediction_timer(); |
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memset(block, 0, 64*sizeof(int16_t)); // clear |
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if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) |
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{ |
{ |
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int dc_size; |
int dc_size; |
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int dc_dif; |
int dc_dif; |
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dc_size = k < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
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dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
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|
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if (dc_size > 8) |
if (dc_size > 8) |
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BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
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} |
} |
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|
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block[0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
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start_coeff = 1; |
start_coeff = 1; |
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} |
} |
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else |
else |
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} |
} |
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|
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start_timer(); |
start_timer(); |
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if (cbp & (1 << (5-k))) // coded |
if (cbp & (1 << (5-i))) // coded |
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{ |
{ |
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get_intra_block(bs, block, mb->acpred_directions[k], start_coeff); |
get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
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} |
} |
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stop_coding_timer(); |
stop_coding_timer(); |
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|
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start_timer(); |
start_timer(); |
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add_acdc(mb, k, block, dcscalar, predictors); |
add_acdc(pMB, i, &block[i*64], iDcScaler, predictors); |
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stop_prediction_timer(); |
stop_prediction_timer(); |
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|
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start_timer(); |
start_timer(); |
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if (dec->quant_type == 0) |
if (dec->quant_type == 0) |
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{ |
{ |
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dequant_intra(data, block, mb->quant, dcscalar); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
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} |
} |
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else |
else |
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{ |
{ |
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dequant4_intra(data, block, mb->quant, dcscalar); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
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} |
} |
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stop_iquant_timer(); |
stop_iquant_timer(); |
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|
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start_timer(); |
start_timer(); |
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idct(data); |
idct(&data[i*64]); |
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stop_idct_timer(); |
stop_idct_timer(); |
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start_timer(); |
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if (k < 4) |
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{ |
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transfer_16to8copy(dec->cur.y + (16*y*dec->edged_width) + 16*x + (4*(k&2)*dec->edged_width) + 8*(k&1), data, dec->edged_width); |
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} |
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else if (k == 4) |
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{ |
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transfer_16to8copy(dec->cur.u+ 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); |
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} |
} |
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else // if (k == 5) |
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if (dec->interlacing && pMB->field_dct) |
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{ |
{ |
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transfer_16to8copy(dec->cur.v + 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); |
next_block = stride; |
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|
stride *= 2; |
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} |
} |
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start_timer(); |
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transfer_16to8copy(pY_Cur, &data[0*64], stride); |
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transfer_16to8copy(pY_Cur + 8, &data[1*64], stride); |
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transfer_16to8copy(pY_Cur + next_block, &data[2*64], stride); |
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transfer_16to8copy(pY_Cur + 8 + next_block, &data[3*64], stride); |
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transfer_16to8copy(pU_Cur, &data[4*64], stride2); |
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transfer_16to8copy(pV_Cur, &data[5*64], stride2); |
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stop_transfer_timer(); |
stop_transfer_timer(); |
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} |
} |
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} |
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// decode an inter macroblock |
// decode an inter macroblock |
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void decoder_mbinter(DECODER * dec, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int rounding) |
void decoder_mbinter(DECODER * dec, |
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{ |
const MACROBLOCK * pMB, |
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const uint32_t stride = dec->edged_width; |
const uint32_t x_pos, |
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const uint32_t stride2 = dec->edged_width / 2; |
const uint32_t y_pos, |
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const uint32_t acpred_flag, |
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const uint32_t cbp, |
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Bitstream * bs, |
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const uint32_t quant, |
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const uint32_t rounding) |
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{ |
279 |
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DECLARE_ALIGNED_MATRIX(block,6, 64, int16_t, CACHE_LINE); |
281 |
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DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
282 |
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283 |
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uint32_t stride = dec->edged_width; |
284 |
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uint32_t stride2 = stride / 2; |
285 |
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uint32_t next_block = stride * 8; |
286 |
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uint32_t i; |
287 |
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uint32_t iQuant = pMB->quant; |
288 |
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uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
289 |
int uv_dx, uv_dy; |
int uv_dx, uv_dy; |
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uint32_t k; |
|
290 |
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|
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if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
292 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
293 |
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pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
294 |
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295 |
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if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
296 |
{ |
{ |
297 |
uv_dx = mb->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
298 |
uv_dy = mb->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
299 |
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|
300 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
301 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
303 |
else |
else |
304 |
{ |
{ |
305 |
int sum; |
int sum; |
306 |
sum = mb->mvs[0].x + mb->mvs[1].x + mb->mvs[2].x + mb->mvs[3].x; |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
307 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
308 |
|
|
309 |
sum = mb->mvs[0].y + mb->mvs[1].y + mb->mvs[2].y + mb->mvs[3].y; |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
310 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
311 |
} |
} |
312 |
|
|
313 |
start_timer(); |
start_timer(); |
314 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y , mb->mvs[0].x, mb->mvs[0].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
315 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y , mb->mvs[1].x, mb->mvs[1].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
316 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y + 8, mb->mvs[2].x, mb->mvs[2].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
317 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y + 8, mb->mvs[3].x, mb->mvs[3].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
318 |
interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
319 |
interpolate8x8_switch(dec->cur.v, dec->refn.v, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
320 |
stop_comp_timer(); |
stop_comp_timer(); |
321 |
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|
322 |
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for (i = 0; i < 6; i++) |
|
for (k = 0; k < 6; k++) |
|
323 |
{ |
{ |
324 |
int16_t block[64]; |
if (cbp & (1 << (5-i))) // coded |
|
int16_t data[64]; |
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|
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if (cbp & (1 << (5-k))) // coded |
|
325 |
{ |
{ |
326 |
memset(block, 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
327 |
|
|
328 |
start_timer(); |
start_timer(); |
329 |
get_inter_block(bs, block); |
get_inter_block(bs, &block[i*64]); |
330 |
stop_coding_timer(); |
stop_coding_timer(); |
331 |
|
|
332 |
start_timer(); |
start_timer(); |
333 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) |
334 |
{ |
{ |
335 |
dequant_inter(data, block, mb->quant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
336 |
} |
} |
337 |
else |
else |
338 |
{ |
{ |
339 |
dequant4_inter(data, block, mb->quant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
340 |
} |
} |
341 |
stop_iquant_timer(); |
stop_iquant_timer(); |
342 |
|
|
343 |
start_timer(); |
start_timer(); |
344 |
idct(data); |
idct(&data[i*64]); |
345 |
stop_idct_timer(); |
stop_idct_timer(); |
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start_timer(); |
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if (k < 4) |
|
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{ |
|
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transfer_16to8add(dec->cur.y + (16*y + 4*(k&2))*stride + 16*x + 8*(k&1), data, stride); |
|
346 |
} |
} |
|
else if (k == 4) |
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{ |
|
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transfer_16to8add(dec->cur.u + 8*y*stride2 + 8*x, data, stride2); |
|
347 |
} |
} |
348 |
else // k == 5 |
|
349 |
|
if (dec->interlacing && pMB->field_dct) |
350 |
{ |
{ |
351 |
transfer_16to8add(dec->cur.v + 8*y*stride2 + 8*x, data, stride2); |
next_block = stride; |
352 |
|
stride *= 2; |
353 |
} |
} |
354 |
|
|
355 |
|
start_timer(); |
356 |
|
if (cbp & 32) |
357 |
|
transfer_16to8add(pY_Cur, &data[0*64], stride); |
358 |
|
if (cbp & 16) |
359 |
|
transfer_16to8add(pY_Cur + 8, &data[1*64], stride); |
360 |
|
if (cbp & 8) |
361 |
|
transfer_16to8add(pY_Cur + next_block, &data[2*64], stride); |
362 |
|
if (cbp & 4) |
363 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3*64], stride); |
364 |
|
if (cbp & 2) |
365 |
|
transfer_16to8add(pU_Cur, &data[4*64], stride2); |
366 |
|
if (cbp & 1) |
367 |
|
transfer_16to8add(pV_Cur, &data[5*64], stride2); |
368 |
stop_transfer_timer(); |
stop_transfer_timer(); |
369 |
} |
} |
|
} |
|
|
} |
|
|
|
|
370 |
|
|
371 |
|
|
372 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
373 |
{ |
{ |
374 |
|
|
375 |
uint32_t x, y; |
uint32_t x, y; |
376 |
|
|
377 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) |
415 |
} |
} |
416 |
mb->quant = quant; |
mb->quant = quant; |
417 |
|
|
418 |
|
if (dec->interlacing) |
419 |
|
{ |
420 |
|
mb->field_dct = BitstreamGetBit(bs); |
421 |
|
DEBUG1("deci: field_dct: ", mb->field_dct); |
422 |
|
} |
423 |
|
|
424 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
425 |
} |
} |
426 |
} |
} |
427 |
|
|
428 |
} |
} |
429 |
|
|
430 |
|
|
431 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
432 |
{ |
{ |
433 |
|
|
434 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
435 |
int high = (32 * scale_fac) - 1; |
int high = (32 * scale_fac) - 1; |
436 |
int low = ((-32) * scale_fac); |
int low = ((-32) * scale_fac); |
437 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
438 |
|
|
439 |
VECTOR pmv[4]; |
VECTOR pmv[4]; |
440 |
uint32_t psad[4]; |
int32_t psad[4]; |
441 |
|
|
442 |
int mv_x, mv_y; |
int mv_x, mv_y; |
443 |
int pmv_x, pmv_y; |
int pmv_x, pmv_y; |
480 |
|
|
481 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
482 |
{ |
{ |
|
uint32_t x, y; |
|
483 |
|
|
484 |
image_swap(&dec->cur, &dec->refn); |
uint32_t x, y; |
485 |
|
|
486 |
start_timer(); |
start_timer(); |
487 |
image_setedges(&dec->refn, dec->edged_width, dec->edged_height, dec->width, dec->height); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
488 |
stop_edges_timer(); |
stop_edges_timer(); |
489 |
|
|
490 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) |
505 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
506 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
507 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
508 |
|
acpred_flag = 0; |
509 |
|
|
510 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
511 |
|
|
537 |
} |
} |
538 |
mb->quant = quant; |
mb->quant = quant; |
539 |
|
|
540 |
|
if (dec->interlacing) |
541 |
|
{ |
542 |
|
mb->field_dct = BitstreamGetBit(bs); |
543 |
|
DEBUG1("decp: field_dct: ", mb->field_dct); |
544 |
|
|
545 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
546 |
{ |
{ |
547 |
|
mb->field_pred = BitstreamGetBit(bs); |
548 |
|
DEBUG1("decp: field_pred: ", mb->field_pred); |
549 |
|
|
550 |
|
if (mb->field_pred) |
551 |
|
{ |
552 |
|
mb->field_for_top = BitstreamGetBit(bs); |
553 |
|
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
554 |
|
mb->field_for_bot = BitstreamGetBit(bs); |
555 |
|
DEBUG1("decp: field_for_bot: ", mb->field_for_bot); |
556 |
|
} |
557 |
|
} |
558 |
|
} |
559 |
|
|
560 |
|
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
561 |
|
{ |
562 |
|
if (dec->interlacing && mb->field_pred) |
563 |
|
{ |
564 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
565 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
566 |
|
} |
567 |
|
else |
568 |
|
{ |
569 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
570 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
571 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
572 |
} |
} |
573 |
|
} |
574 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
575 |
{ |
{ |
576 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
600 |
start_timer(); |
start_timer(); |
601 |
|
|
602 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
603 |
dec->refn.y + (16*y)*dec->edged_width + (16*x), |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
604 |
dec->edged_width); |
dec->edged_width); |
605 |
|
|
606 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
607 |
dec->refn.y + (16*y)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), |
608 |
dec->edged_width); |
dec->edged_width); |
609 |
|
|
610 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
611 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x), |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), |
612 |
dec->edged_width); |
dec->edged_width); |
613 |
|
|
614 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
615 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), |
616 |
dec->edged_width); |
dec->edged_width); |
617 |
|
|
618 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
619 |
dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
620 |
dec->edged_width/2); |
dec->edged_width/2); |
621 |
|
|
622 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
623 |
dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
624 |
dec->edged_width/2); |
dec->edged_width/2); |
625 |
|
|
626 |
stop_transfer_timer(); |
stop_transfer_timer(); |
631 |
|
|
632 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
633 |
{ |
{ |
634 |
|
|
635 |
Bitstream bs; |
Bitstream bs; |
636 |
uint32_t rounding; |
uint32_t rounding; |
637 |
uint32_t quant; |
uint32_t quant; |
638 |
uint32_t fcode; |
uint32_t fcode; |
639 |
uint32_t intra_dc_threshold; |
uint32_t intra_dc_threshold; |
640 |
|
uint32_t vop_type; |
641 |
|
|
642 |
start_global_timer(); |
start_global_timer(); |
643 |
|
|
644 |
BitstreamInit(&bs, frame->bitstream, frame->length); |
BitstreamInit(&bs, frame->bitstream, frame->length); |
645 |
|
|
646 |
switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) |
// add by chenm001 <chenm001@163.com> |
647 |
|
// for support B-frame to reference last 2 frame |
648 |
|
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold); |
649 |
|
|
650 |
|
if (vop_type==I_VOP || vop_type==P_VOP){ |
651 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
652 |
|
image_swap(&dec->cur, &dec->refn[0]); |
653 |
|
} |
654 |
|
|
655 |
|
switch (vop_type) |
656 |
{ |
{ |
657 |
case P_VOP : |
case P_VOP : |
658 |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
685 |
stop_global_timer(); |
stop_global_timer(); |
686 |
|
|
687 |
return XVID_ERR_OK; |
return XVID_ERR_OK; |
688 |
|
|
689 |
} |
} |