* H.26L/H.264/AVC/JVT/14496-10/... cavlc bitstream decoding
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/h264_cavlc.c
+ * @file
* H.264 / AVC / MPEG4 part10 cavlc bitstream decoding.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
-#define CABAC 0
+#define CABAC(h) 0
#include "internal.h"
#include "avcodec.h"
2, 3, 2, 0,
};
+static const uint8_t chroma422_dc_coeff_token_len[4*9]={
+ 1, 0, 0, 0,
+ 7, 2, 0, 0,
+ 7, 7, 3, 0,
+ 9, 7, 7, 5,
+ 9, 9, 7, 6,
+ 10, 10, 9, 7,
+ 11, 11, 10, 7,
+ 12, 12, 11, 10,
+ 13, 12, 12, 11,
+};
+
+static const uint8_t chroma422_dc_coeff_token_bits[4*9]={
+ 1, 0, 0, 0,
+ 15, 1, 0, 0,
+ 14, 13, 1, 0,
+ 7, 12, 11, 1,
+ 6, 5, 10, 1,
+ 7, 6, 4, 9,
+ 7, 6, 5, 8,
+ 7, 6, 5, 4,
+ 7, 5, 4, 4,
+};
+
static const uint8_t coeff_token_len[4][4*17]={
{
1, 0, 0, 0,
{ 1, 0, 0, 0,},
};
+static const uint8_t chroma422_dc_total_zeros_len[7][8]= {
+ { 1, 3, 3, 4, 4, 4, 5, 5 },
+ { 3, 2, 3, 3, 3, 3, 3 },
+ { 3, 3, 2, 2, 3, 3 },
+ { 3, 2, 2, 2, 3 },
+ { 2, 2, 2, 2 },
+ { 2, 2, 1 },
+ { 1, 1 },
+};
+
+static const uint8_t chroma422_dc_total_zeros_bits[7][8]= {
+ { 1, 2, 3, 2, 3, 1, 1, 0 },
+ { 0, 1, 1, 4, 5, 6, 7 },
+ { 0, 1, 1, 2, 6, 7 },
+ { 6, 0, 1, 2, 7 },
+ { 0, 1, 2, 3 },
+ { 0, 1, 1 },
+ { 0, 1 },
+};
+
static const uint8_t run_len[7][16]={
{1,1},
{1,2,2},
static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
static const int chroma_dc_coeff_token_vlc_table_size = 256;
+static VLC chroma422_dc_coeff_token_vlc;
+static VLC_TYPE chroma422_dc_coeff_token_vlc_table[8192][2];
+static const int chroma422_dc_coeff_token_vlc_table_size = 8192;
+
static VLC total_zeros_vlc[15];
static VLC_TYPE total_zeros_vlc_tables[15][512][2];
static const int total_zeros_vlc_tables_size = 512;
static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
+static VLC chroma422_dc_total_zeros_vlc[7];
+static VLC_TYPE chroma422_dc_total_zeros_vlc_tables[7][32][2];
+static const int chroma422_dc_total_zeros_vlc_tables_size = 32;
+
static VLC run_vlc[6];
static VLC_TYPE run_vlc_tables[6][8][2];
static const int run_vlc_tables_size = 8;
#define LEVEL_TAB_BITS 8
static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];
+#define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
+#define CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13
+#define COEFF_TOKEN_VLC_BITS 8
+#define TOTAL_ZEROS_VLC_BITS 9
+#define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
+#define CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5
+#define RUN_VLC_BITS 3
+#define RUN7_VLC_BITS 6
/**
- * gets the predicted number of non-zero coefficients.
+ * Get the predicted number of non-zero coefficients.
* @param n block index
*/
static inline int pred_non_zero_count(H264Context *h, int n){
if(i<64) i= (i+1)>>1;
- tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
+ tprintf(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
return i&31;
}
static av_cold void init_cavlc_level_tab(void){
- int suffix_length, mask;
+ int suffix_length;
unsigned int i;
for(suffix_length=0; suffix_length<7; suffix_length++){
for(i=0; i<(1<<LEVEL_TAB_BITS); i++){
int prefix= LEVEL_TAB_BITS - av_log2(2*i);
- int level_code= (prefix<<suffix_length) + (i>>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<<suffix_length);
- mask= -(level_code&1);
- level_code= (((2+level_code)>>1) ^ mask) - mask;
if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){
+ int level_code = (prefix << suffix_length) +
+ (i >> (av_log2(i) - suffix_length)) - (1 << suffix_length);
+ int mask = -(level_code&1);
+ level_code = (((2 + level_code) >> 1) ^ mask) - mask;
cavlc_level_tab[suffix_length][i][0]= level_code;
cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length;
}else if(prefix + 1 <= LEVEL_TAB_BITS){
&chroma_dc_coeff_token_bits[0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
+ chroma422_dc_coeff_token_vlc.table = chroma422_dc_coeff_token_vlc_table;
+ chroma422_dc_coeff_token_vlc.table_allocated = chroma422_dc_coeff_token_vlc_table_size;
+ init_vlc(&chroma422_dc_coeff_token_vlc, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 4*9,
+ &chroma422_dc_coeff_token_len [0], 1, 1,
+ &chroma422_dc_coeff_token_bits[0], 1, 1,
+ INIT_VLC_USE_NEW_STATIC);
+
offset = 0;
for(i=0; i<4; i++){
coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
&chroma_dc_total_zeros_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
}
+
+ for(i=0; i<7; i++){
+ chroma422_dc_total_zeros_vlc[i].table = chroma422_dc_total_zeros_vlc_tables[i];
+ chroma422_dc_total_zeros_vlc[i].table_allocated = chroma422_dc_total_zeros_vlc_tables_size;
+ init_vlc(&chroma422_dc_total_zeros_vlc[i],
+ CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 8,
+ &chroma422_dc_total_zeros_len [i][0], 1, 1,
+ &chroma422_dc_total_zeros_bits[i][0], 1, 1,
+ INIT_VLC_USE_NEW_STATIC);
+ }
+
for(i=0; i<15; i++){
total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
}
/**
- * decodes a residual block.
+ * Decode a residual block.
* @param n block index
* @param scantable scantable
* @param max_coeff number of coefficients in the block
* @return <0 if an error occurred
*/
-static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
- MpegEncContext * const s = &h->s;
+static int decode_residual(H264Context *h, GetBitContext *gb, int16_t *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
int level[16];
- int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
+ int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before;
//FIXME put trailing_onex into the context
- if(n == CHROMA_DC_BLOCK_INDEX){
- coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
+ if(max_coeff <= 8){
+ if (max_coeff == 4)
+ coeff_token = get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
+ else
+ coeff_token = get_vlc2(gb, chroma422_dc_coeff_token_vlc.table, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 1);
total_coeff= coeff_token>>2;
}else{
- if(n == LUMA_DC_BLOCK_INDEX){
- total_coeff= pred_non_zero_count(h, 0);
+ if(n >= LUMA_DC_BLOCK_INDEX){
+ total_coeff= pred_non_zero_count(h, (n - LUMA_DC_BLOCK_INDEX)*16);
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
total_coeff= coeff_token>>2;
}else{
total_coeff= pred_non_zero_count(h, n);
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
total_coeff= coeff_token>>2;
- h->non_zero_count_cache[ scan8[n] ]= total_coeff;
}
}
+ h->non_zero_count_cache[ scan8[n] ]= total_coeff;
//FIXME set last_non_zero?
if(total_coeff==0)
return 0;
if(total_coeff > (unsigned)max_coeff) {
- av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
+ av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", h->mb_x, h->mb_y, total_coeff);
return -1;
}
trailing_ones= coeff_token&3;
- tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
+ tprintf(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
assert(total_coeff<=16);
i = show_bits(gb, 3);
if(trailing_ones<total_coeff) {
int mask, prefix;
- int suffix_length = total_coeff > 10 && trailing_ones < 3;
+ int suffix_length = total_coeff > 10 & trailing_ones < 3;
int bitsi= show_bits(gb, LEVEL_TAB_BITS);
int level_code= cavlc_level_tab[suffix_length][bitsi][0];
level_code= prefix + get_bits(gb, 4); //part
}else{
level_code= 30 + get_bits(gb, prefix-3); //part
- if(prefix>=16)
+ if(prefix>=16){
+ if(prefix > 25+3){
+ av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n");
+ return -1;
+ }
level_code += (1<<(prefix-3))-4096;
+ }
}
if(trailing_ones < 3) level_code += 2;
mask= -(level_code&1);
level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
}else{
- if(trailing_ones < 3) level_code += (level_code>>31)|1;
+ level_code += ((level_code>>31)|1) & -(trailing_ones < 3);
- suffix_length = 1;
- if(level_code + 3U > 6U)
- suffix_length++;
+ suffix_length = 1 + (level_code + 3U > 6U);
level[trailing_ones]= level_code;
}
level_code= (((2+level_code)>>1) ^ mask) - mask;
}
level[i]= level_code;
-
- if(suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length])
- suffix_length++;
+ suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length];
}
}
if(total_coeff == max_coeff)
zeros_left=0;
else{
- if(n == CHROMA_DC_BLOCK_INDEX)
- zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
- else
- zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
+ if (max_coeff <= 8) {
+ if (max_coeff == 4)
+ zeros_left = get_vlc2(gb, chroma_dc_total_zeros_vlc[total_coeff - 1].table,
+ CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
+ else
+ zeros_left = get_vlc2(gb, chroma422_dc_total_zeros_vlc[total_coeff - 1].table,
+ CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 1);
+ } else {
+ zeros_left= get_vlc2(gb, total_zeros_vlc[total_coeff - 1].table, TOTAL_ZEROS_VLC_BITS, 1);
+ }
}
- coeff_num = zeros_left + total_coeff - 1;
- j = scantable[coeff_num];
- if(n > 24){
- block[j] = level[0];
- for(i=1;i<total_coeff;i++) {
- if(zeros_left <= 0)
- run_before = 0;
- else if(zeros_left < 7){
- run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
- }else{
- run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
- }
- zeros_left -= run_before;
- coeff_num -= 1 + run_before;
- j= scantable[ coeff_num ];
+#define STORE_BLOCK(type) \
+ scantable += zeros_left + total_coeff - 1; \
+ if(n >= LUMA_DC_BLOCK_INDEX){ \
+ ((type*)block)[*scantable] = level[0]; \
+ for(i=1;i<total_coeff && zeros_left > 0;i++) { \
+ if(zeros_left < 7) \
+ run_before= get_vlc2(gb, run_vlc[zeros_left - 1].table, RUN_VLC_BITS, 1); \
+ else \
+ run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
+ zeros_left -= run_before; \
+ scantable -= 1 + run_before; \
+ ((type*)block)[*scantable]= level[i]; \
+ } \
+ for(;i<total_coeff;i++) { \
+ scantable--; \
+ ((type*)block)[*scantable]= level[i]; \
+ } \
+ }else{ \
+ ((type*)block)[*scantable] = ((int)(level[0] * qmul[*scantable] + 32))>>6; \
+ for(i=1;i<total_coeff && zeros_left > 0;i++) { \
+ if(zeros_left < 7) \
+ run_before= get_vlc2(gb, run_vlc[zeros_left - 1].table, RUN_VLC_BITS, 1); \
+ else \
+ run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
+ zeros_left -= run_before; \
+ scantable -= 1 + run_before; \
+ ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
+ } \
+ for(;i<total_coeff;i++) { \
+ scantable--; \
+ ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
+ } \
+ }
- block[j]= level[i];
+ if (zeros_left < 0) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "negative number of zero coeffs at %d %d\n", h->mb_x, h->mb_y);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (h->pixel_shift) {
+ STORE_BLOCK(int32_t)
+ } else {
+ STORE_BLOCK(int16_t)
+ }
+
+ return 0;
+}
+
+static av_always_inline int decode_luma_residual(H264Context *h, GetBitContext *gb, const uint8_t *scan, const uint8_t *scan8x8, int pixel_shift, int mb_type, int cbp, int p){
+ int i4x4, i8x8;
+ int qscale = p == 0 ? h->qscale : h->chroma_qp[p-1];
+ if(IS_INTRA16x16(mb_type)){
+ AV_ZERO128(h->mb_luma_dc[p]+0);
+ AV_ZERO128(h->mb_luma_dc[p]+8);
+ AV_ZERO128(h->mb_luma_dc[p]+16);
+ AV_ZERO128(h->mb_luma_dc[p]+24);
+ if( decode_residual(h, h->intra_gb_ptr, h->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX+p, scan, NULL, 16) < 0){
+ return -1; //FIXME continue if partitioned and other return -1 too
+ }
+
+ assert((cbp&15) == 0 || (cbp&15) == 15);
+
+ if(cbp&15){
+ for(i8x8=0; i8x8<4; i8x8++){
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= i4x4 + 4*i8x8 + p*16;
+ if( decode_residual(h, h->intra_gb_ptr, h->mb + (16*index << pixel_shift),
+ index, scan + 1, h->dequant4_coeff[p][qscale], 15) < 0 ){
+ return -1;
+ }
+ }
+ }
+ return 0xf;
+ }else{
+ fill_rectangle(&h->non_zero_count_cache[scan8[p*16]], 4, 4, 8, 0, 1);
+ return 0;
}
}else{
- block[j] = (level[0] * qmul[j] + 32)>>6;
- for(i=1;i<total_coeff;i++) {
- if(zeros_left <= 0)
- run_before = 0;
- else if(zeros_left < 7){
- run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
+ int cqm = (IS_INTRA( mb_type ) ? 0:3)+p;
+ /* For CAVLC 4:4:4, we need to keep track of the luma 8x8 CBP for deblocking nnz purposes. */
+ int new_cbp = 0;
+ for(i8x8=0; i8x8<4; i8x8++){
+ if(cbp & (1<<i8x8)){
+ if(IS_8x8DCT(mb_type)){
+ int16_t *buf = &h->mb[64*i8x8+256*p << pixel_shift];
+ uint8_t *nnz;
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= i4x4 + 4*i8x8 + p*16;
+ if( decode_residual(h, gb, buf, index, scan8x8+16*i4x4,
+ h->dequant8_coeff[cqm][qscale], 16) < 0 )
+ return -1;
+ }
+ nnz= &h->non_zero_count_cache[ scan8[4*i8x8+p*16] ];
+ nnz[0] += nnz[1] + nnz[8] + nnz[9];
+ new_cbp |= !!nnz[0] << i8x8;
+ }else{
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= i4x4 + 4*i8x8 + p*16;
+ if( decode_residual(h, gb, h->mb + (16*index << pixel_shift), index,
+ scan, h->dequant4_coeff[cqm][qscale], 16) < 0 ){
+ return -1;
+ }
+ new_cbp |= h->non_zero_count_cache[ scan8[index] ] << i8x8;
+ }
+ }
}else{
- run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
+ uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8+p*16] ];
+ nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
}
- zeros_left -= run_before;
- coeff_num -= 1 + run_before;
- j= scantable[ coeff_num ];
-
- block[j]= (level[i] * qmul[j] + 32)>>6;
}
+ return new_cbp;
}
-
- if(zeros_left<0){
- av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
-
- return 0;
}
int ff_h264_decode_mb_cavlc(H264Context *h){
- MpegEncContext * const s = &h->s;
int mb_xy;
int partition_count;
unsigned int mb_type, cbp;
int dct8x8_allowed= h->pps.transform_8x8_mode;
+ int decode_chroma = h->sps.chroma_format_idc == 1 || h->sps.chroma_format_idc == 2;
+ const int pixel_shift = h->pixel_shift;
- mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
+ mb_xy = h->mb_xy = h->mb_x + h->mb_y*h->mb_stride;
- tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
+ tprintf(h->avctx, "pic:%d mb:%d/%d\n", h->frame_num, h->mb_x, h->mb_y);
cbp = 0; /* avoid warning. FIXME: find a solution without slowing
down the code */
- if(h->slice_type_nos != FF_I_TYPE){
- if(s->mb_skip_run==-1)
- s->mb_skip_run= get_ue_golomb(&s->gb);
-
- if (s->mb_skip_run--) {
- if(FRAME_MBAFF && (s->mb_y&1) == 0){
- if(s->mb_skip_run==0)
- h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
- else
- predict_field_decoding_flag(h);
+ if(h->slice_type_nos != AV_PICTURE_TYPE_I){
+ if(h->mb_skip_run==-1)
+ h->mb_skip_run= get_ue_golomb(&h->gb);
+
+ if (h->mb_skip_run--) {
+ if(FRAME_MBAFF(h) && (h->mb_y&1) == 0){
+ if(h->mb_skip_run==0)
+ h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb);
}
decode_mb_skip(h);
return 0;
}
}
- if(FRAME_MBAFF){
- if( (s->mb_y&1) == 0 )
- h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
+ if (FRAME_MBAFF(h)) {
+ if( (h->mb_y&1) == 0 )
+ h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb);
}
h->prev_mb_skipped= 0;
- mb_type= get_ue_golomb(&s->gb);
- if(h->slice_type_nos == FF_B_TYPE){
+ mb_type= get_ue_golomb(&h->gb);
+ if(h->slice_type_nos == AV_PICTURE_TYPE_B){
if(mb_type < 23){
partition_count= b_mb_type_info[mb_type].partition_count;
mb_type= b_mb_type_info[mb_type].type;
mb_type -= 23;
goto decode_intra_mb;
}
- }else if(h->slice_type_nos == FF_P_TYPE){
+ }else if(h->slice_type_nos == AV_PICTURE_TYPE_P){
if(mb_type < 5){
partition_count= p_mb_type_info[mb_type].partition_count;
mb_type= p_mb_type_info[mb_type].type;
goto decode_intra_mb;
}
}else{
- assert(h->slice_type_nos == FF_I_TYPE);
- if(h->slice_type == FF_SI_TYPE && mb_type)
+ assert(h->slice_type_nos == AV_PICTURE_TYPE_I);
+ if(h->slice_type == AV_PICTURE_TYPE_SI && mb_type)
mb_type--;
decode_intra_mb:
if(mb_type > 25){
- av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
+ av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(h->slice_type), h->mb_x, h->mb_y);
return -1;
}
partition_count=0;
mb_type= i_mb_type_info[mb_type].type;
}
- if(MB_FIELD)
+ if(MB_FIELD(h))
mb_type |= MB_TYPE_INTERLACED;
h->slice_table[ mb_xy ]= h->slice_num;
if(IS_INTRA_PCM(mb_type)){
- unsigned int x;
+ const int mb_size = ff_h264_mb_sizes[h->sps.chroma_format_idc] *
+ h->sps.bit_depth_luma;
// We assume these blocks are very rare so we do not optimize it.
- align_get_bits(&s->gb);
-
- // The pixels are stored in the same order as levels in h->mb array.
- for(x=0; x < (CHROMA ? 384 : 256); x++){
- ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
- }
+ h->intra_pcm_ptr = align_get_bits(&h->gb);
+ skip_bits_long(&h->gb, mb_size);
// In deblocking, the quantizer is 0
- s->current_picture.qscale_table[mb_xy]= 0;
+ h->cur_pic.qscale_table[mb_xy] = 0;
// All coeffs are present
- memset(h->non_zero_count[mb_xy], 16, 32);
+ memset(h->non_zero_count[mb_xy], 16, 48);
- s->current_picture.mb_type[mb_xy]= mb_type;
+ h->cur_pic.mb_type[mb_xy] = mb_type;
return 0;
}
- if(MB_MBAFF){
- h->ref_count[0] <<= 1;
- h->ref_count[1] <<= 1;
- }
-
+ fill_decode_neighbors(h, mb_type);
fill_decode_caches(h, mb_type);
//mb_pred
if(IS_INTRA4x4(mb_type)){
int i;
int di = 1;
- if(dct8x8_allowed && get_bits1(&s->gb)){
+ if(dct8x8_allowed && get_bits1(&h->gb)){
mb_type |= MB_TYPE_8x8DCT;
di = 4;
}
for(i=0; i<16; i+=di){
int mode= pred_intra_mode(h, i);
- if(!get_bits1(&s->gb)){
- const int rem_mode= get_bits(&s->gb, 3);
+ if(!get_bits1(&h->gb)){
+ const int rem_mode= get_bits(&h->gb, 3);
mode = rem_mode + (rem_mode >= mode);
}
else
h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
}
- ff_h264_write_back_intra_pred_mode(h);
+ write_back_intra_pred_mode(h);
if( ff_h264_check_intra4x4_pred_mode(h) < 0)
return -1;
}else{
- h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode(h, h->intra16x16_pred_mode);
+ h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode(h, h->intra16x16_pred_mode, 0);
if(h->intra16x16_pred_mode < 0)
return -1;
}
- if(CHROMA){
- pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&s->gb));
+ if(decode_chroma){
+ pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&h->gb), 1);
if(pred_mode < 0)
return -1;
h->chroma_pred_mode= pred_mode;
+ } else {
+ h->chroma_pred_mode = DC_128_PRED8x8;
}
}else if(partition_count==4){
int i, j, sub_partition_count[4], list, ref[2][4];
- if(h->slice_type_nos == FF_B_TYPE){
+ if(h->slice_type_nos == AV_PICTURE_TYPE_B){
for(i=0; i<4; i++){
- h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
+ h->sub_mb_type[i]= get_ue_golomb_31(&h->gb);
if(h->sub_mb_type[i] >=13){
- av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
+ av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], h->mb_x, h->mb_y);
return -1;
}
sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
}
}else{
- assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
+ assert(h->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ?
for(i=0; i<4; i++){
- h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
+ h->sub_mb_type[i]= get_ue_golomb_31(&h->gb);
if(h->sub_mb_type[i] >=4){
- av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
+ av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], h->mb_x, h->mb_y);
return -1;
}
sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
}
for(list=0; list<h->list_count; list++){
- int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
+ int ref_count = IS_REF0(mb_type) ? 1 : h->ref_count[list] << MB_MBAFF(h);
for(i=0; i<4; i++){
if(IS_DIRECT(h->sub_mb_type[i])) continue;
if(IS_DIR(h->sub_mb_type[i], 0, list)){
if(ref_count == 1){
tmp= 0;
}else if(ref_count == 2){
- tmp= get_bits1(&s->gb)^1;
+ tmp= get_bits1(&h->gb)^1;
}else{
- tmp= get_ue_golomb_31(&s->gb);
+ tmp= get_ue_golomb_31(&h->gb);
if(tmp>=ref_count){
- av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
+ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
return -1;
}
}
const int index= 4*i + block_width*j;
int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
- mx += get_se_golomb(&s->gb);
- my += get_se_golomb(&s->gb);
- tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+ mx += get_se_golomb(&h->gb);
+ my += get_se_golomb(&h->gb);
+ tprintf(h->avctx, "final mv:%d %d\n", mx, my);
if(IS_SUB_8X8(sub_mb_type)){
mv_cache[ 1 ][0]=
for(list=0; list<h->list_count; list++){
unsigned int val;
if(IS_DIR(mb_type, 0, list)){
- if(h->ref_count[list]==1){
+ int rc = h->ref_count[list] << MB_MBAFF(h);
+ if (rc == 1) {
val= 0;
- }else if(h->ref_count[list]==2){
- val= get_bits1(&s->gb)^1;
+ } else if (rc == 2) {
+ val= get_bits1(&h->gb)^1;
}else{
- val= get_ue_golomb_31(&s->gb);
- if(val >= h->ref_count[list]){
- av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
+ val= get_ue_golomb_31(&h->gb);
+ if (val >= rc) {
+ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
- }else
- val= LIST_NOT_USED&0xFF;
fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
+ }
}
for(list=0; list<h->list_count; list++){
- unsigned int val;
if(IS_DIR(mb_type, 0, list)){
pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
- mx += get_se_golomb(&s->gb);
- my += get_se_golomb(&s->gb);
- tprintf(s->avctx, "final mv:%d %d\n", mx, my);
-
- val= pack16to32(mx,my);
- }else
- val=0;
- fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4);
+ mx += get_se_golomb(&h->gb);
+ my += get_se_golomb(&h->gb);
+ tprintf(h->avctx, "final mv:%d %d\n", mx, my);
+
+ fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
+ }
}
}
else if(IS_16X8(mb_type)){
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){
- if(h->ref_count[list] == 1){
+ int rc = h->ref_count[list] << MB_MBAFF(h);
+ if (rc == 1) {
val= 0;
- }else if(h->ref_count[list] == 2){
- val= get_bits1(&s->gb)^1;
+ } else if (rc == 2) {
+ val= get_bits1(&h->gb)^1;
}else{
- val= get_ue_golomb_31(&s->gb);
- if(val >= h->ref_count[list]){
- av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
+ val= get_ue_golomb_31(&h->gb);
+ if (val >= rc) {
+ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
unsigned int val;
if(IS_DIR(mb_type, i, list)){
pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
- mx += get_se_golomb(&s->gb);
- my += get_se_golomb(&s->gb);
- tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+ mx += get_se_golomb(&h->gb);
+ my += get_se_golomb(&h->gb);
+ tprintf(h->avctx, "final mv:%d %d\n", mx, my);
val= pack16to32(mx,my);
}else
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ //FIXME optimize
- if(h->ref_count[list]==1){
+ int rc = h->ref_count[list] << MB_MBAFF(h);
+ if (rc == 1) {
val= 0;
- }else if(h->ref_count[list]==2){
- val= get_bits1(&s->gb)^1;
+ } else if (rc == 2) {
+ val= get_bits1(&h->gb)^1;
}else{
- val= get_ue_golomb_31(&s->gb);
- if(val >= h->ref_count[list]){
- av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
+ val= get_ue_golomb_31(&h->gb);
+ if (val >= rc) {
+ av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
unsigned int val;
if(IS_DIR(mb_type, i, list)){
pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
- mx += get_se_golomb(&s->gb);
- my += get_se_golomb(&s->gb);
- tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+ mx += get_se_golomb(&h->gb);
+ my += get_se_golomb(&h->gb);
+ tprintf(h->avctx, "final mv:%d %d\n", mx, my);
val= pack16to32(mx,my);
}else
write_back_motion(h, mb_type);
if(!IS_INTRA16x16(mb_type)){
- cbp= get_ue_golomb(&s->gb);
- if(cbp > 47){
- av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
- return -1;
- }
+ cbp= get_ue_golomb(&h->gb);
- if(CHROMA){
+ if(decode_chroma){
+ if(cbp > 47){
+ av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y);
+ return -1;
+ }
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
else cbp= golomb_to_inter_cbp [cbp];
}else{
+ if(cbp > 15){
+ av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y);
+ return -1;
+ }
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
else cbp= golomb_to_inter_cbp_gray[cbp];
}
}
if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
- if(get_bits1(&s->gb)){
- mb_type |= MB_TYPE_8x8DCT;
- }
+ mb_type |= MB_TYPE_8x8DCT*get_bits1(&h->gb);
}
h->cbp=
h->cbp_table[mb_xy]= cbp;
- s->current_picture.mb_type[mb_xy]= mb_type;
+ h->cur_pic.mb_type[mb_xy] = mb_type;
if(cbp || IS_INTRA16x16(mb_type)){
- int i8x8, i4x4, chroma_idx;
+ int i4x4, i8x8, chroma_idx;
int dquant;
+ int ret;
GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
- const uint8_t *scan, *scan8x8, *dc_scan;
-
-// fill_non_zero_count_cache(h);
+ const uint8_t *scan, *scan8x8;
+ const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
if(IS_INTERLACED(mb_type)){
- scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
- scan= s->qscale ? h->field_scan : h->field_scan_q0;
- dc_scan= luma_dc_field_scan;
+ scan8x8= h->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
+ scan= h->qscale ? h->field_scan : h->field_scan_q0;
}else{
- scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
- scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
- dc_scan= luma_dc_zigzag_scan;
+ scan8x8= h->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
+ scan= h->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
}
- dquant= get_se_golomb(&s->gb);
+ dquant= get_se_golomb(&h->gb);
- s->qscale += dquant;
+ h->qscale += dquant;
- if(((unsigned)s->qscale) > 51){
- if(s->qscale<0) s->qscale+= 52;
- else s->qscale-= 52;
- if(((unsigned)s->qscale) > 51){
- av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
+ if(((unsigned)h->qscale) > max_qp){
+ if(h->qscale<0) h->qscale+= max_qp+1;
+ else h->qscale-= max_qp+1;
+ if(((unsigned)h->qscale) > max_qp){
+ av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, h->mb_x, h->mb_y);
return -1;
}
}
- h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale);
- h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale);
- if(IS_INTRA16x16(mb_type)){
- if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
- return -1; //FIXME continue if partitioned and other return -1 too
- }
+ h->chroma_qp[0]= get_chroma_qp(h, 0, h->qscale);
+ h->chroma_qp[1]= get_chroma_qp(h, 1, h->qscale);
- assert((cbp&15) == 0 || (cbp&15) == 15);
-
- if(cbp&15){
- for(i8x8=0; i8x8<4; i8x8++){
- for(i4x4=0; i4x4<4; i4x4++){
- const int index= i4x4 + 4*i8x8;
- if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
- return -1;
- }
+ if( (ret = decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 0)) < 0 ){
+ return -1;
+ }
+ h->cbp_table[mb_xy] |= ret << 12;
+ if (CHROMA444(h)) {
+ if( decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 1) < 0 ){
+ return -1;
+ }
+ if( decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 2) < 0 ){
+ return -1;
+ }
+ } else if (CHROMA422(h)) {
+ if(cbp&0x30){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++)
+ if (decode_residual(h, gb, h->mb + ((256 + 16*16*chroma_idx) << pixel_shift),
+ CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma422_dc_scan,
+ NULL, 8) < 0) {
+ return -1;
}
- }
- }else{
- fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
}
- }else{
- for(i8x8=0; i8x8<4; i8x8++){
- if(cbp & (1<<i8x8)){
- if(IS_8x8DCT(mb_type)){
- DCTELEM *buf = &h->mb[64*i8x8];
- uint8_t *nnz;
- for(i4x4=0; i4x4<4; i4x4++){
- if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4,
- h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
- return -1;
- }
- nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
- nnz[0] += nnz[1] + nnz[8] + nnz[9];
- }else{
- for(i4x4=0; i4x4<4; i4x4++){
- const int index= i4x4 + 4*i8x8;
- if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
+ if(cbp&0x20){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++){
+ const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
+ int16_t *mb = h->mb + (16*(16 + 16*chroma_idx) << pixel_shift);
+ for (i8x8 = 0; i8x8 < 2; i8x8++) {
+ for (i4x4 = 0; i4x4 < 4; i4x4++) {
+ const int index = 16 + 16*chroma_idx + 8*i8x8 + i4x4;
+ if (decode_residual(h, gb, mb, index, scan + 1, qmul, 15) < 0)
return -1;
- }
+ mb += 16 << pixel_shift;
}
}
- }else{
- uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
- nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
}
+ }else{
+ fill_rectangle(&h->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
+ fill_rectangle(&h->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);
}
- }
-
- if(cbp&0x30){
- for(chroma_idx=0; chroma_idx<2; chroma_idx++)
- if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){
- return -1;
- }
- }
-
- if(cbp&0x20){
- for(chroma_idx=0; chroma_idx<2; chroma_idx++){
- const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
- for(i4x4=0; i4x4<4; i4x4++){
- const int index= 16 + 4*chroma_idx + i4x4;
- if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, qmul, 15) < 0){
+ } else /* yuv420 */ {
+ if(cbp&0x30){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++)
+ if( decode_residual(h, gb, h->mb + ((256 + 16*16*chroma_idx) << pixel_shift), CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma_dc_scan, NULL, 4) < 0){
return -1;
}
+ }
+
+ if(cbp&0x20){
+ for(chroma_idx=0; chroma_idx<2; chroma_idx++){
+ const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
+ for(i4x4=0; i4x4<4; i4x4++){
+ const int index= 16 + 16*chroma_idx + i4x4;
+ if( decode_residual(h, gb, h->mb + (16*index << pixel_shift), index, scan + 1, qmul, 15) < 0){
+ return -1;
+ }
+ }
}
+ }else{
+ fill_rectangle(&h->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
+ fill_rectangle(&h->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);
}
- }else{
- uint8_t * const nnz= &h->non_zero_count_cache[0];
- nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
- nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
}
}else{
- uint8_t * const nnz= &h->non_zero_count_cache[0];
- fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
- nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
- nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
+ fill_rectangle(&h->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1);
+ fill_rectangle(&h->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
+ fill_rectangle(&h->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);
}
- s->current_picture.qscale_table[mb_xy]= s->qscale;
+ h->cur_pic.qscale_table[mb_xy] = h->qscale;
write_back_non_zero_count(h);
- if(MB_MBAFF){
- h->ref_count[0] >>= 1;
- h->ref_count[1] >>= 1;
- }
-
return 0;
}
-