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svq3.c
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svq3.c
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/*
* Copyright (c) 2003 The FFmpeg Project
*
* 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
*/
/*
* How to use this decoder:
* SVQ3 data is transported within Apple Quicktime files. Quicktime files
* have stsd atoms to describe media trak properties. A stsd atom for a
* video trak contains 1 or more ImageDescription atoms. These atoms begin
* with the 4-byte length of the atom followed by the codec fourcc. Some
* decoders need information in this atom to operate correctly. Such
* is the case with SVQ3. In order to get the best use out of this decoder,
* the calling app must make the SVQ3 ImageDescription atom available
* via the AVCodecContext's extradata[_size] field:
*
* AVCodecContext.extradata = pointer to ImageDescription, first characters
* are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length
* AVCodecContext.extradata_size = size of ImageDescription atom memory
* buffer (which will be the same as the ImageDescription atom size field
* from the QT file, minus 4 bytes since the length is missing)
*
* You will know you have these parameters passed correctly when the decoder
* correctly decodes this file:
* http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
*/
#include <inttypes.h>
#include "libavutil/attributes.h"
#include "libavutil/crc.h"
#include "libavutil/mem_internal.h"
#include "codec_internal.h"
#include "decode.h"
#include "avcodec.h"
#include "mpegutils.h"
#include "h264data.h"
#include "h264dsp.h"
#include "h264pred.h"
#include "h264_parse.h"
#include "golomb.h"
#include "hpeldsp.h"
#include "mathops.h"
#include "rectangle.h"
#include "tpeldsp.h"
#include "videodsp.h"
#if CONFIG_ZLIB
#include <zlib.h>
#endif
/**
* @file
* svq3 decoder.
*/
typedef struct SVQ3Frame {
AVFrame *f;
int16_t (*motion_val_buf[2])[2];
int16_t (*motion_val[2])[2];
uint32_t *mb_type_buf, *mb_type;
} SVQ3Frame;
typedef struct SVQ3Context {
AVCodecContext *avctx;
H264DSPContext h264dsp;
H264PredContext hpc;
HpelDSPContext hdsp;
TpelDSPContext tdsp;
VideoDSPContext vdsp;
SVQ3Frame *cur_pic;
SVQ3Frame *next_pic;
SVQ3Frame *last_pic;
GetBitContext gb;
GetBitContext gb_slice;
uint8_t *slice_buf;
unsigned slice_buf_size;
int halfpel_flag;
int thirdpel_flag;
int has_watermark;
uint32_t watermark_key;
int adaptive_quant;
int h_edge_pos;
int v_edge_pos;
int last_frame_output;
int slice_num;
int qscale;
int cbp;
int frame_num;
int frame_num_offset;
int prev_frame_num_offset;
int prev_frame_num;
enum AVPictureType pict_type;
enum AVPictureType slice_type;
int low_delay;
int mb_x, mb_y;
int mb_xy;
int mb_width, mb_height;
int mb_stride, mb_num;
int b_stride;
uint32_t *mb2br_xy;
int chroma_pred_mode;
int intra16x16_pred_mode;
int8_t intra4x4_pred_mode_cache[5 * 8];
int8_t (*intra4x4_pred_mode);
unsigned int top_samples_available;
unsigned int left_samples_available;
uint8_t *edge_emu_buffer;
DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8];
uint32_t dequant4_coeff[QP_MAX_NUM + 1][16];
int block_offset[2 * (16 * 3)];
SVQ3Frame frames[3];
} SVQ3Context;
#define FULLPEL_MODE 1
#define HALFPEL_MODE 2
#define THIRDPEL_MODE 3
#define PREDICT_MODE 4
/* dual scan (from some older H.264 draft)
* o-->o-->o o
* | /|
* o o o / o
* | / | |/ |
* o o o o
* /
* o-->o-->o-->o
*/
static const uint8_t svq3_scan[16] = {
0 + 0 * 4, 1 + 0 * 4, 2 + 0 * 4, 2 + 1 * 4,
2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4,
0 + 1 * 4, 0 + 2 * 4, 1 + 1 * 4, 1 + 2 * 4,
0 + 3 * 4, 1 + 3 * 4, 2 + 3 * 4, 3 + 3 * 4,
};
static const uint8_t luma_dc_zigzag_scan[16] = {
0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64,
3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64,
1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64,
3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64,
};
static const uint8_t svq3_pred_0[25][2] = {
{ 0, 0 },
{ 1, 0 }, { 0, 1 },
{ 0, 2 }, { 1, 1 }, { 2, 0 },
{ 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
{ 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
{ 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
{ 2, 4 }, { 3, 3 }, { 4, 2 },
{ 4, 3 }, { 3, 4 },
{ 4, 4 }
};
static const int8_t svq3_pred_1[6][6][5] = {
{ { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 },
{ 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } },
{ { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
{ 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
{ { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
{ 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
{ { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
{ 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
{ { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
{ 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
{ { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
{ 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
};
static const struct {
uint8_t run;
uint8_t level;
} svq3_dct_tables[2][16] = {
{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
{ 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
{ 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
};
static const uint32_t svq3_dequant_coeff[32] = {
3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533
};
static void svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp)
{
const unsigned qmul = svq3_dequant_coeff[qp];
#define stride 16
int i;
int temp[16];
static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride };
for (i = 0; i < 4; i++) {
const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]);
const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]);
const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3];
const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3];
temp[4 * i + 0] = z0 + z3;
temp[4 * i + 1] = z1 + z2;
temp[4 * i + 2] = z1 - z2;
temp[4 * i + 3] = z0 - z3;
}
for (i = 0; i < 4; i++) {
const int offset = x_offset[i];
const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]);
const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]);
const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i];
const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i];
output[stride * 0 + offset] = (int)((z0 + z3) * qmul + 0x80000) >> 20;
output[stride * 2 + offset] = (int)((z1 + z2) * qmul + 0x80000) >> 20;
output[stride * 8 + offset] = (int)((z1 - z2) * qmul + 0x80000) >> 20;
output[stride * 10 + offset] = (int)((z0 - z3) * qmul + 0x80000) >> 20;
}
}
#undef stride
static void svq3_add_idct_c(uint8_t *dst, int16_t *block,
int stride, int qp, int dc)
{
const int qmul = svq3_dequant_coeff[qp];
int i;
if (dc) {
dc = 13 * 13 * (dc == 1 ? 1538U* block[0]
: qmul * (block[0] >> 3) / 2);
block[0] = 0;
}
for (i = 0; i < 4; i++) {
const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]);
const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]);
const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i];
const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i];
block[0 + 4 * i] = z0 + z3;
block[1 + 4 * i] = z1 + z2;
block[2 + 4 * i] = z1 - z2;
block[3 + 4 * i] = z0 - z3;
}
for (i = 0; i < 4; i++) {
const unsigned z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]);
const unsigned z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]);
const unsigned z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3];
const unsigned z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3];
const int rr = (dc + 0x80000u);
dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((int)((z0 + z3) * qmul + rr) >> 20));
dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((int)((z1 + z2) * qmul + rr) >> 20));
dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((int)((z1 - z2) * qmul + rr) >> 20));
dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((int)((z0 - z3) * qmul + rr) >> 20));
}
memset(block, 0, 16 * sizeof(int16_t));
}
static inline int svq3_decode_block(GetBitContext *gb, int16_t *block,
int index, const int type)
{
static const uint8_t *const scan_patterns[4] = {
luma_dc_zigzag_scan, ff_zigzag_scan, svq3_scan, ff_h264_chroma_dc_scan
};
int run, level, sign, limit;
unsigned vlc;
const int intra = 3 * type >> 2;
const uint8_t *const scan = scan_patterns[type];
for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
for (; (vlc = get_interleaved_ue_golomb(gb)) != 0; index++) {
if ((int32_t)vlc < 0)
return -1;
sign = (vlc & 1) ? 0 : -1;
vlc = vlc + 1 >> 1;
if (type == 3) {
if (vlc < 3) {
run = 0;
level = vlc;
} else if (vlc < 4) {
run = 1;
level = 1;
} else {
run = vlc & 0x3;
level = (vlc + 9 >> 2) - run;
}
} else {
if (vlc < 16U) {
run = svq3_dct_tables[intra][vlc].run;
level = svq3_dct_tables[intra][vlc].level;
} else if (intra) {
run = vlc & 0x7;
level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
} else {
run = vlc & 0xF;
level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
}
}
if ((index += run) >= limit)
return -1;
block[scan[index]] = (level ^ sign) - sign;
}
if (type != 2) {
break;
}
}
return 0;
}
static av_always_inline int
svq3_fetch_diagonal_mv(const SVQ3Context *s, const int16_t **C,
int i, int list, int part_width)
{
const int topright_ref = s->ref_cache[list][i - 8 + part_width];
if (topright_ref != PART_NOT_AVAILABLE) {
*C = s->mv_cache[list][i - 8 + part_width];
return topright_ref;
} else {
*C = s->mv_cache[list][i - 8 - 1];
return s->ref_cache[list][i - 8 - 1];
}
}
/**
* Get the predicted MV.
* @param n the block index
* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
static av_always_inline void svq3_pred_motion(const SVQ3Context *s, int n,
int part_width, int list,
int ref, int *const mx, int *const my)
{
const int index8 = scan8[n];
const int top_ref = s->ref_cache[list][index8 - 8];
const int left_ref = s->ref_cache[list][index8 - 1];
const int16_t *const A = s->mv_cache[list][index8 - 1];
const int16_t *const B = s->mv_cache[list][index8 - 8];
const int16_t *C;
int diagonal_ref, match_count;
/* mv_cache
* B . . A T T T T
* U . . L . . , .
* U . . L . . . .
* U . . L . . , .
* . . . L . . . .
*/
diagonal_ref = svq3_fetch_diagonal_mv(s, &C, index8, list, part_width);
match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref);
if (match_count > 1) { //most common
*mx = mid_pred(A[0], B[0], C[0]);
*my = mid_pred(A[1], B[1], C[1]);
} else if (match_count == 1) {
if (left_ref == ref) {
*mx = A[0];
*my = A[1];
} else if (top_ref == ref) {
*mx = B[0];
*my = B[1];
} else {
*mx = C[0];
*my = C[1];
}
} else {
if (top_ref == PART_NOT_AVAILABLE &&
diagonal_ref == PART_NOT_AVAILABLE &&
left_ref != PART_NOT_AVAILABLE) {
*mx = A[0];
*my = A[1];
} else {
*mx = mid_pred(A[0], B[0], C[0]);
*my = mid_pred(A[1], B[1], C[1]);
}
}
}
static inline void svq3_mc_dir_part(SVQ3Context *s,
int x, int y, int width, int height,
int mx, int my, int dxy,
int thirdpel, int dir, int avg)
{
const SVQ3Frame *pic = (dir == 0) ? s->last_pic : s->next_pic;
uint8_t *src, *dest;
int i, emu = 0;
int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2
int linesize = s->cur_pic->f->linesize[0];
int uvlinesize = s->cur_pic->f->linesize[1];
mx += x;
my += y;
if (mx < 0 || mx >= s->h_edge_pos - width - 1 ||
my < 0 || my >= s->v_edge_pos - height - 1) {
emu = 1;
mx = av_clip(mx, -16, s->h_edge_pos - width + 15);
my = av_clip(my, -16, s->v_edge_pos - height + 15);
}
/* form component predictions */
dest = s->cur_pic->f->data[0] + x + y * linesize;
src = pic->f->data[0] + mx + my * linesize;
if (emu) {
s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
linesize, linesize,
width + 1, height + 1,
mx, my, s->h_edge_pos, s->v_edge_pos);
src = s->edge_emu_buffer;
}
if (thirdpel)
(avg ? s->tdsp.avg_tpel_pixels_tab
: s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, linesize,
width, height);
else
(avg ? s->hdsp.avg_pixels_tab
: s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, linesize,
height);
if (!(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
mx = mx + (mx < (int) x) >> 1;
my = my + (my < (int) y) >> 1;
width = width >> 1;
height = height >> 1;
blocksize++;
for (i = 1; i < 3; i++) {
dest = s->cur_pic->f->data[i] + (x >> 1) + (y >> 1) * uvlinesize;
src = pic->f->data[i] + mx + my * uvlinesize;
if (emu) {
s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
uvlinesize, uvlinesize,
width + 1, height + 1,
mx, my, (s->h_edge_pos >> 1),
s->v_edge_pos >> 1);
src = s->edge_emu_buffer;
}
if (thirdpel)
(avg ? s->tdsp.avg_tpel_pixels_tab
: s->tdsp.put_tpel_pixels_tab)[dxy](dest, src,
uvlinesize,
width, height);
else
(avg ? s->hdsp.avg_pixels_tab
: s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src,
uvlinesize,
height);
}
}
}
static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode,
int dir, int avg)
{
int i, j, k, mx, my, dx, dy, x, y;
const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
const int part_height = 16 >> ((unsigned)(size + 1) / 3);
const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0;
const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width;
const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width;
for (i = 0; i < 16; i += part_height)
for (j = 0; j < 16; j += part_width) {
const int b_xy = (4 * s->mb_x + (j >> 2)) +
(4 * s->mb_y + (i >> 2)) * s->b_stride;
int dxy;
x = 16 * s->mb_x + j;
y = 16 * s->mb_y + i;
k = (j >> 2 & 1) + (i >> 1 & 2) +
(j >> 1 & 4) + (i & 8);
if (mode != PREDICT_MODE) {
svq3_pred_motion(s, k, part_width >> 2, dir, 1, &mx, &my);
} else {
mx = s->next_pic->motion_val[0][b_xy][0] * 2;
my = s->next_pic->motion_val[0][b_xy][1] * 2;
if (dir == 0) {
mx = mx * s->frame_num_offset /
s->prev_frame_num_offset + 1 >> 1;
my = my * s->frame_num_offset /
s->prev_frame_num_offset + 1 >> 1;
} else {
mx = mx * (s->frame_num_offset - s->prev_frame_num_offset) /
s->prev_frame_num_offset + 1 >> 1;
my = my * (s->frame_num_offset - s->prev_frame_num_offset) /
s->prev_frame_num_offset + 1 >> 1;
}
}
/* clip motion vector prediction to frame border */
mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x);
my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y);
/* get (optional) motion vector differential */
if (mode == PREDICT_MODE) {
dx = dy = 0;
} else {
dy = get_interleaved_se_golomb(&s->gb_slice);
dx = get_interleaved_se_golomb(&s->gb_slice);
if (dx != (int16_t)dx || dy != (int16_t)dy) {
av_log(s->avctx, AV_LOG_ERROR, "invalid MV vlc\n");
return -1;
}
}
/* compute motion vector */
if (mode == THIRDPEL_MODE) {
int fx, fy;
mx = (mx + 1 >> 1) + dx;
my = (my + 1 >> 1) + dy;
fx = (unsigned)(mx + 0x30000) / 3 - 0x10000;
fy = (unsigned)(my + 0x30000) / 3 - 0x10000;
dxy = (mx - 3 * fx) + 4 * (my - 3 * fy);
svq3_mc_dir_part(s, x, y, part_width, part_height,
fx, fy, dxy, 1, dir, avg);
mx += mx;
my += my;
} else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
mx = (unsigned)(mx + 1 + 0x30000) / 3 + dx - 0x10000;
my = (unsigned)(my + 1 + 0x30000) / 3 + dy - 0x10000;
dxy = (mx & 1) + 2 * (my & 1);
svq3_mc_dir_part(s, x, y, part_width, part_height,
mx >> 1, my >> 1, dxy, 0, dir, avg);
mx *= 3;
my *= 3;
} else {
mx = (unsigned)(mx + 3 + 0x60000) / 6 + dx - 0x10000;
my = (unsigned)(my + 3 + 0x60000) / 6 + dy - 0x10000;
svq3_mc_dir_part(s, x, y, part_width, part_height,
mx, my, 0, 0, dir, avg);
mx *= 6;
my *= 6;
}
/* update mv_cache */
if (mode != PREDICT_MODE) {
int32_t mv = pack16to32(mx, my);
if (part_height == 8 && i < 8) {
AV_WN32A(s->mv_cache[dir][scan8[k] + 1 * 8], mv);
if (part_width == 8 && j < 8)
AV_WN32A(s->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv);
}
if (part_width == 8 && j < 8)
AV_WN32A(s->mv_cache[dir][scan8[k] + 1], mv);
if (part_width == 4 || part_height == 4)
AV_WN32A(s->mv_cache[dir][scan8[k]], mv);
}
/* write back motion vectors */
fill_rectangle(s->cur_pic->motion_val[dir][b_xy],
part_width >> 2, part_height >> 2, s->b_stride,
pack16to32(mx, my), 4);
}
return 0;
}
static av_always_inline void hl_decode_mb_idct_luma(SVQ3Context *s,
int mb_type, const int *block_offset,
int linesize, uint8_t *dest_y)
{
int i;
if (!IS_INTRA4x4(mb_type)) {
for (i = 0; i < 16; i++)
if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) {
uint8_t *const ptr = dest_y + block_offset[i];
svq3_add_idct_c(ptr, s->mb + i * 16, linesize,
s->qscale, IS_INTRA(mb_type) ? 1 : 0);
}
}
}
static av_always_inline void hl_decode_mb_predict_luma(SVQ3Context *s,
int mb_type,
const int *block_offset,
int linesize,
uint8_t *dest_y)
{
int i;
int qscale = s->qscale;
if (IS_INTRA4x4(mb_type)) {
for (i = 0; i < 16; i++) {
uint8_t *const ptr = dest_y + block_offset[i];
const int dir = s->intra4x4_pred_mode_cache[scan8[i]];
uint8_t *topright;
int nnz;
if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
av_assert2(s->mb_y || linesize <= block_offset[i]);
topright = ptr + 4 - linesize;
} else
topright = NULL;
s->hpc.pred4x4[dir](ptr, topright, linesize);
nnz = s->non_zero_count_cache[scan8[i]];
if (nnz) {
svq3_add_idct_c(ptr, s->mb + i * 16, linesize, qscale, 0);
}
}
} else {
s->hpc.pred16x16[s->intra16x16_pred_mode](dest_y, linesize);
svq3_luma_dc_dequant_idct_c(s->mb, s->mb_luma_dc[0], qscale);
}
}
static void hl_decode_mb(SVQ3Context *s)
{
const int mb_x = s->mb_x;
const int mb_y = s->mb_y;
const int mb_xy = s->mb_xy;
const int mb_type = s->cur_pic->mb_type[mb_xy];
uint8_t *dest_y, *dest_cb, *dest_cr;
int linesize, uvlinesize;
int i, j;
const int *block_offset = &s->block_offset[0];
const int block_h = 16 >> 1;
linesize = s->cur_pic->f->linesize[0];
uvlinesize = s->cur_pic->f->linesize[1];
dest_y = s->cur_pic->f->data[0] + (mb_x + mb_y * linesize) * 16;
dest_cb = s->cur_pic->f->data[1] + mb_x * 8 + mb_y * uvlinesize * block_h;
dest_cr = s->cur_pic->f->data[2] + mb_x * 8 + mb_y * uvlinesize * block_h;
s->vdsp.prefetch(dest_y + (s->mb_x & 3) * 4 * linesize + 64, linesize, 4);
s->vdsp.prefetch(dest_cb + (s->mb_x & 7) * uvlinesize + 64, dest_cr - dest_cb, 2);
if (IS_INTRA(mb_type)) {
s->hpc.pred8x8[s->chroma_pred_mode](dest_cb, uvlinesize);
s->hpc.pred8x8[s->chroma_pred_mode](dest_cr, uvlinesize);
hl_decode_mb_predict_luma(s, mb_type, block_offset, linesize, dest_y);
}
hl_decode_mb_idct_luma(s, mb_type, block_offset, linesize, dest_y);
if (s->cbp & 0x30) {
uint8_t *dest[2] = { dest_cb, dest_cr };
s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 1,
s->dequant4_coeff[4][0]);
s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 2,
s->dequant4_coeff[4][0]);
for (j = 1; j < 3; j++) {
for (i = j * 16; i < j * 16 + 4; i++)
if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) {
uint8_t *const ptr = dest[j - 1] + block_offset[i];
svq3_add_idct_c(ptr, s->mb + i * 16,
uvlinesize, ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2);
}
}
}
}
static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
{
int i, j, k, m, dir, mode;
int cbp = 0;
uint32_t vlc;
int8_t *top, *left;
const int mb_xy = s->mb_xy;
const int b_xy = 4 * s->mb_x + 4 * s->mb_y * s->b_stride;
s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
if (mb_type == 0) { /* SKIP */
if (s->pict_type == AV_PICTURE_TYPE_P ||
s->next_pic->mb_type[mb_xy] == -1) {
svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16,
0, 0, 0, 0, 0, 0);
if (s->pict_type == AV_PICTURE_TYPE_B)
svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16,
0, 0, 0, 0, 1, 1);
mb_type = MB_TYPE_SKIP;
} else {
mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6);
if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0)
return -1;
if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0)
return -1;
mb_type = MB_TYPE_16x16;
}
} else if (mb_type < 8) { /* INTER */
if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&s->gb_slice))
mode = THIRDPEL_MODE;
else if (s->halfpel_flag &&
s->thirdpel_flag == !get_bits1(&s->gb_slice))
mode = HALFPEL_MODE;
else
mode = FULLPEL_MODE;
/* fill caches */
/* note ref_cache should contain here:
* ????????
* ???11111
* N??11111
* N??11111
* N??11111
*/
for (m = 0; m < 2; m++) {
if (s->mb_x > 0 && s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6] != -1) {
for (i = 0; i < 4; i++)
AV_COPY32(s->mv_cache[m][scan8[0] - 1 + i * 8],
s->cur_pic->motion_val[m][b_xy - 1 + i * s->b_stride]);
} else {
for (i = 0; i < 4; i++)
AV_ZERO32(s->mv_cache[m][scan8[0] - 1 + i * 8]);
}
if (s->mb_y > 0) {
memcpy(s->mv_cache[m][scan8[0] - 1 * 8],
s->cur_pic->motion_val[m][b_xy - s->b_stride],
4 * 2 * sizeof(int16_t));
memset(&s->ref_cache[m][scan8[0] - 1 * 8],
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
if (s->mb_x < s->mb_width - 1) {
AV_COPY32(s->mv_cache[m][scan8[0] + 4 - 1 * 8],
s->cur_pic->motion_val[m][b_xy - s->b_stride + 4]);
s->ref_cache[m][scan8[0] + 4 - 1 * 8] =
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride + 1] + 6] == -1 ||
s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1;
} else
s->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE;
if (s->mb_x > 0) {
AV_COPY32(s->mv_cache[m][scan8[0] - 1 - 1 * 8],
s->cur_pic->motion_val[m][b_xy - s->b_stride - 1]);
s->ref_cache[m][scan8[0] - 1 - 1 * 8] =
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1;
} else
s->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE;
} else
memset(&s->ref_cache[m][scan8[0] - 1 * 8 - 1],
PART_NOT_AVAILABLE, 8);
if (s->pict_type != AV_PICTURE_TYPE_B)
break;
}
/* decode motion vector(s) and form prediction(s) */
if (s->pict_type == AV_PICTURE_TYPE_P) {
if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0)
return -1;
} else { /* AV_PICTURE_TYPE_B */
if (mb_type != 2) {
if (svq3_mc_dir(s, 0, mode, 0, 0) < 0)
return -1;
} else {
for (i = 0; i < 4; i++)
memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride],
0, 4 * 2 * sizeof(int16_t));
}
if (mb_type != 1) {
if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0)
return -1;
} else {
for (i = 0; i < 4; i++)
memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride],
0, 4 * 2 * sizeof(int16_t));
}
}
mb_type = MB_TYPE_16x16;
} else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
int8_t *i4x4 = s->intra4x4_pred_mode + s->mb2br_xy[s->mb_xy];
int8_t *i4x4_cache = s->intra4x4_pred_mode_cache;
memset(s->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t));
if (mb_type == 8) {
if (s->mb_x > 0) {
for (i = 0; i < 4; i++)
s->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6 - i];
if (s->intra4x4_pred_mode_cache[scan8[0] - 1] == -1)
s->left_samples_available = 0x5F5F;
}
if (s->mb_y > 0) {
s->intra4x4_pred_mode_cache[4 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 0];
s->intra4x4_pred_mode_cache[5 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 1];
s->intra4x4_pred_mode_cache[6 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 2];
s->intra4x4_pred_mode_cache[7 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 3];
if (s->intra4x4_pred_mode_cache[4 + 8 * 0] == -1)
s->top_samples_available = 0x33FF;
}
/* decode prediction codes for luma blocks */
for (i = 0; i < 16; i += 2) {
vlc = get_interleaved_ue_golomb(&s->gb_slice);
if (vlc >= 25U) {
av_log(s->avctx, AV_LOG_ERROR,
"luma prediction:%"PRIu32"\n", vlc);
return -1;
}
left = &s->intra4x4_pred_mode_cache[scan8[i] - 1];
top = &s->intra4x4_pred_mode_cache[scan8[i] - 8];
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
if (left[1] == -1 || left[2] == -1) {
av_log(s->avctx, AV_LOG_ERROR, "weird prediction\n");
return -1;
}
}
} else { /* mb_type == 33, DC_128_PRED block type */
for (i = 0; i < 4; i++)
memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4);
}
AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
i4x4[4] = i4x4_cache[7 + 8 * 3];
i4x4[5] = i4x4_cache[7 + 8 * 2];
i4x4[6] = i4x4_cache[7 + 8 * 1];
if (mb_type == 8) {
ff_h264_check_intra4x4_pred_mode(s->intra4x4_pred_mode_cache,
s->avctx, s->top_samples_available,
s->left_samples_available);
s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
} else {
for (i = 0; i < 4; i++)
memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4);
s->top_samples_available = 0x33FF;
s->left_samples_available = 0x5F5F;
}
mb_type = MB_TYPE_INTRA4x4;
} else { /* INTRA16x16 */
dir = ff_h264_i_mb_type_info[mb_type - 8].pred_mode;
dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1;
if ((s->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(s->avctx, s->top_samples_available,
s->left_samples_available, dir, 0)) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n");
return s->intra16x16_pred_mode;
}
cbp = ff_h264_i_mb_type_info[mb_type - 8].cbp;
mb_type = MB_TYPE_INTRA16x16;
}
if (!IS_INTER(mb_type) && s->pict_type != AV_PICTURE_TYPE_I) {
for (i = 0; i < 4; i++)
memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride],
0, 4 * 2 * sizeof(int16_t));
if (s->pict_type == AV_PICTURE_TYPE_B) {
for (i = 0; i < 4; i++)
memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride],
0, 4 * 2 * sizeof(int16_t));
}
}
if (!IS_INTRA4x4(mb_type)) {
memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy], DC_PRED, 8);
}
if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) {
memset(s->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t));
}
if (!IS_INTRA16x16(mb_type) &&
(!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) {
if ((vlc = get_interleaved_ue_golomb(&s->gb_slice)) >= 48U){
av_log(s->avctx, AV_LOG_ERROR, "cbp_vlc=%"PRIu32"\n", vlc);
return -1;
}
cbp = IS_INTRA(mb_type) ? ff_h264_golomb_to_intra4x4_cbp[vlc]
: ff_h264_golomb_to_inter_cbp[vlc];
}
if (IS_INTRA16x16(mb_type) ||
(s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
s->qscale += get_interleaved_se_golomb(&s->gb_slice);
if (s->qscale > 31u) {
av_log(s->avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
return -1;
}
}
if (IS_INTRA16x16(mb_type)) {
AV_ZERO128(s->mb_luma_dc[0] + 0);
AV_ZERO128(s->mb_luma_dc[0] + 8);
if (svq3_decode_block(&s->gb_slice, s->mb_luma_dc[0], 0, 1)) {
av_log(s->avctx, AV_LOG_ERROR,
"error while decoding intra luma dc\n");
return -1;
}
}
if (cbp) {
const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
const int type = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
for (i = 0; i < 4; i++)
if ((cbp & (1 << i))) {
for (j = 0; j < 4; j++) {
k = index ? (1 * (j & 1) + 2 * (i & 1) +
2 * (j & 2) + 4 * (i & 2))
: (4 * i + j);
s->non_zero_count_cache[scan8[k]] = 1;
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], index, type)) {
av_log(s->avctx, AV_LOG_ERROR,
"error while decoding block\n");
return -1;
}
}
}
if ((cbp & 0x30)) {
for (i = 1; i < 3; ++i)
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * 16 * i], 0, 3)) {
av_log(s->avctx, AV_LOG_ERROR,
"error while decoding chroma dc block\n");
return -1;
}
if ((cbp & 0x20)) {
for (i = 1; i < 3; i++) {
for (j = 0; j < 4; j++) {
k = 16 * i + j;
s->non_zero_count_cache[scan8[k]] = 1;
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], 1, 1)) {
av_log(s->avctx, AV_LOG_ERROR,
"error while decoding chroma ac block\n");
return -1;
}
}
}
}
}
}
s->cbp = cbp;
s->cur_pic->mb_type[mb_xy] = mb_type;
if (IS_INTRA(mb_type))