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ffmpeg.wasm-core
Commit 9fa888c0 authored by Vittorio Giovara's avatar Vittorio Giovara
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intrax8: Keep a reference to the decoder blocks

parent c2084ffc
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Showing with 24 additions and 15 deletions
libavcodec/intrax8.c
View file @ 9fa888c0
......@@ -480,9 +480,8 @@ static void x8_get_prediction(IntraX8Context *const w)
static void x8_ac_compensation(IntraX8Context *const w, const int direction,
const int dc_level)
{
MpegEncContext *const s = w->s;
int t;
#define B(x, y) s->block[0][w->idsp.idct_permutation[(x) + (y) * 8]]
#define B(x, y) w->block[0][w->idsp.idct_permutation[(x) + (y) * 8]]
#define T(x) ((x) * dc_level + 0x8000) >> 16;
switch (direction) {
case 0:
......@@ -526,7 +525,7 @@ static void x8_ac_compensation(IntraX8Context *const w, const int direction,
t = T(1084); // g
B(1, 1) += t;
s->block_last_index[0] = FFMAX(s->block_last_index[0], 7 * 8);
w->block_last_index[0] = FFMAX(w->block_last_index[0], 7 * 8);
break;
case 1:
B(0, 1) -= T(6269);
......@@ -534,7 +533,7 @@ static void x8_ac_compensation(IntraX8Context *const w, const int direction,
B(0, 5) -= T(172);
B(0, 7) -= T(73);
s->block_last_index[0] = FFMAX(s->block_last_index[0], 7 * 8);
w->block_last_index[0] = FFMAX(w->block_last_index[0], 7 * 8);
break;
case 2:
B(1, 0) -= T(6269);
......@@ -542,7 +541,7 @@ static void x8_ac_compensation(IntraX8Context *const w, const int direction,
B(5, 0) -= T(172);
B(7, 0) -= T(73);
s->block_last_index[0] = FFMAX(s->block_last_index[0], 7);
w->block_last_index[0] = FFMAX(w->block_last_index[0], 7);
break;
}
#undef B
......@@ -572,8 +571,6 @@ static const int16_t quant_table[64] = {
static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
{
MpegEncContext *const s = w->s;
uint8_t *scantable;
int final, run, level;
int ac_mode, dc_mode, est_run, dc_level;
......@@ -583,7 +580,7 @@ static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
int sign;
assert(w->orient < 12);
w->bdsp.clear_block(s->block[0]);
w->bdsp.clear_block(w->block[0]);
if (chroma)
dc_mode = 2;
......@@ -644,12 +641,12 @@ static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
if (use_quant_matrix)
level = (level * quant_table[pos]) >> 8;
s->block[0][scantable[pos]] = level;
w->block[0][scantable[pos]] = level;
} while (!final);
s->block_last_index[0] = pos;
w->block_last_index[0] = pos;
} else { // DC only
s->block_last_index[0] = 0;
w->block_last_index[0] = 0;
if (w->flat_dc && ((unsigned) (dc_level + 1)) < 3) { // [-1; 1]
int32_t divide_quant = !chroma ? w->divide_quant_dc_luma
: w->divide_quant_dc_chroma;
......@@ -669,9 +666,9 @@ static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
zeros_only = (dc_level == 0);
}
if (!chroma)
s->block[0][0] = dc_level * w->quant;
w->block[0][0] = dc_level * w->quant;
else
s->block[0][0] = dc_level * w->quant_dc_chroma;
w->block[0][0] = dc_level * w->quant_dc_chroma;
// there is !zero_only check in the original, but dc_level check is enough
if ((unsigned int) (dc_level + 1) >= 3 && (w->edges & 3) != 3) {
......@@ -681,7 +678,7 @@ static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
direction = (0x6A017C >> (w->orient * 2)) & 3;
if (direction != 3) {
// modify block_last[]
x8_ac_compensation(w, direction, s->block[0][0]);
x8_ac_compensation(w, direction, w->block[0][0]);
}
}
......@@ -696,7 +693,7 @@ static int x8_decode_intra_mb(IntraX8Context *const w, const int chroma)
if (!zeros_only)
w->idsp.idct_add(w->dest[chroma],
w->frame->linesize[!!chroma],
s->block[0]);
w->block[0]);
block_placed:
if (!chroma)
......@@ -735,6 +732,8 @@ static void x8_init_block_index(IntraX8Context *w, AVFrame *frame)
av_cold int ff_intrax8_common_init(AVCodecContext *avctx,
IntraX8Context *w, IDCTDSPContext *idsp,
int16_t (*block)[64],
int block_last_index[12],
int mb_width, int mb_height,
MpegEncContext *const s)
{
......@@ -746,6 +745,8 @@ av_cold int ff_intrax8_common_init(AVCodecContext *avctx,
w->idsp = *idsp;
w->mb_width = mb_width;
w->mb_height = mb_height;
w->block = block;
w->block_last_index = block_last_index;
w->s = s;
// two rows, 2 blocks per cannon mb
......
libavcodec/intrax8.h
View file @ 9fa888c0
......@@ -37,6 +37,8 @@ typedef struct IntraX8Context {
uint8_t *prediction_table; // 2 * (mb_w * 2)
ScanTable scantable[3];
AVCodecContext *avctx;
int *block_last_index; ///< last nonzero coefficient in block
int16_t (*block)[64];
// set by the caller codec
MpegEncContext *s;
......@@ -77,6 +79,8 @@ typedef struct IntraX8Context {
* @param avctx pointer to AVCodecContext
* @param w pointer to IntraX8Context
* @param idsp pointer to IDCTDSPContext
* @param block pointer to block array
* @param block_last_index pointer to index array
* @param mb_width macroblock width
* @param mb_height macroblock height
* @param s pointer to MpegEncContext of the parent codec
......@@ -84,6 +88,8 @@ typedef struct IntraX8Context {
*/
int ff_intrax8_common_init(AVCodecContext *avctx,
IntraX8Context *w, IDCTDSPContext *idsp,
int16_t (*block)[64],
int block_last_index[12],
int mb_width, int mb_height,
MpegEncContext *const s);
......
libavcodec/vc1dec.c
View file @ 9fa888c0
......@@ -380,6 +380,7 @@ av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
}
ret = ff_intrax8_common_init(s->avctx, &v->x8, &s->idsp,
s->block, s->block_last_index,
s->mb_width, s->mb_height,
s);
if (ret < 0)
......
libavcodec/wmv2dec.c
View file @ 9fa888c0
......@@ -475,6 +475,7 @@ static av_cold int wmv2_decode_init(AVCodecContext *avctx)
ff_wmv2_common_init(w);
return ff_intrax8_common_init(avctx, &w->x8, &w->s.idsp,
w->s.block, w->s.block_last_index,
w->s.mb_width, w->s.mb_height, &w->s);
}
......
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