falkTX
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FFmpeg
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Merge remote-tracking branch 'qatar/master' 

* qatar/master:
  os_support: Choose between direct.h and io.h using a configure check
  os_support: Include io.h instead of direct.h on mingw32ce
  x86: ac3dsp: Only refer to the ac3_downmix_sse symbol if it has been declared
  swscale: Remove two bogus asserts
  ac3: move ac3_downmix() from dsputil to ac3dsp
  lavr/audio_mix_matrix: acknowledge the existence of LFE2.
  mlp_parser: avoid mapping multiple disctinct TrueHD channels to the same Libav channel.
  lavu/audioconvert: add a second low frequency channel.

Conflicts:
	doc/APIchanges
	libavcodec/ac3dsp.c
	libavcodec/ac3dsp.h
	libavcodec/mlp_parser.c
	libavutil/audioconvert.c
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
tags/n1.0
Michael Niedermayer 13 years ago
parent
c942e8b1d7 ca6b544ac9
commit
e3e09f2bad
17 changed files with 171 additions and 158 deletions
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  1. +2
    -0
      configure
  2. +3
    -0
      doc/APIchanges
  3. +6
    -34
      libavcodec/ac3dec.c
  4. +0
    -3
      libavcodec/ac3dec.h
  5. +26
    -0
      libavcodec/ac3dsp.c
  6. +3
    -0
      libavcodec/ac3dsp.h
  7. +0
    -4
      libavcodec/dsputil.c
  8. +0
    -1
      libavcodec/dsputil.h
  9. +2
    -2
      libavcodec/mlp_parser.c
  10. +121
    -0
      libavcodec/x86/ac3dsp_init.c
  11. +0
    -111
      libavcodec/x86/dsputil_mmx.c
  12. +4
    -0
      libavformat/os_support.h
  13. +1
    -0
      libavresample/audio_mix_matrix.c
  14. +1
    -0
      libavutil/audioconvert.c
  15. +1
    -0
      libavutil/audioconvert.h
  16. +1
    -1
      libavutil/version.h
  17. +0
    -2
      libswscale/swscale.c

+ 2
- 0
configure View File

@@ -1276,6 +1276,7 @@ HAVE_LIST="
dev_ic_bt8xx_h
dev_video_bktr_ioctl_bt848_h
dev_video_meteor_ioctl_meteor_h
direct_h
dlfcn_h
dlopen
dos_paths
@@ -3504,6 +3505,7 @@ check_func_headers windows.h Sleep
check_func_headers windows.h VirtualAlloc
check_func_headers glob.h glob

check_header direct.h
check_header dlfcn.h
check_header dxva.h
check_header dxva2api.h -D_WIN32_WINNT=0x0600


+ 3
- 0
doc/APIchanges View File

@@ -83,6 +83,9 @@ API changes, most recent first:
2012-03-26 - a67d9cf - lavfi 2.66.100
Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.

2012-09-12 - xxxxxxx - lavu 51.41.0 - audioconvert.h
Added AV_CH_LOW_FREQUENCY_2 channel mask value.

2012-09-04 - xxxxxxx - lavu 51.40.0 - opt.h
Reordered the fields in default_val in AVOption, changed which
default_val field is used for which AVOptionType.


+ 6
- 34
libavcodec/ac3dec.c View File

@@ -620,34 +620,6 @@ static inline void do_imdct(AC3DecodeContext *s, int channels)
}
}

/**
* Downmix the output to mono or stereo.
*/
void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int i, j;
float v0, v1;
if (out_ch == 2) {
for (i = 0; i < len; i++) {
v0 = v1 = 0.0f;
for (j = 0; j < in_ch; j++) {
v0 += samples[j][i] * matrix[j][0];
v1 += samples[j][i] * matrix[j][1];
}
samples[0][i] = v0;
samples[1][i] = v1;
}
} else if (out_ch == 1) {
for (i = 0; i < len; i++) {
v0 = 0.0f;
for (j = 0; j < in_ch; j++)
v0 += samples[j][i] * matrix[j][0];
samples[0][i] = v0;
}
}
}

/**
* Upmix delay samples from stereo to original channel layout.
*/
@@ -1266,19 +1238,19 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
do_imdct(s, s->channels);

if (downmix_output) {
s->dsp.ac3_downmix(s->output, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
s->ac3dsp.downmix(s->output, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
}
} else {
if (downmix_output) {
s->dsp.ac3_downmix(s->transform_coeffs + 1, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
s->ac3dsp.downmix(s->transform_coeffs + 1, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
}

if (downmix_output && !s->downmixed) {
s->downmixed = 1;
s->dsp.ac3_downmix(s->delay, s->downmix_coeffs, s->out_channels,
s->fbw_channels, 128);
s->ac3dsp.downmix(s->delay, s->downmix_coeffs, s->out_channels,
s->fbw_channels, 128);
}

do_imdct(s, s->out_channels);


+ 0
- 3
libavcodec/ac3dec.h View File

@@ -227,9 +227,6 @@ int ff_eac3_parse_header(AC3DecodeContext *s);
*/
void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch);

void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len);

/**
* Apply spectral extension to each channel by copying lower frequency
* coefficients to higher frequency bins and applying side information to


+ 26
- 0
libavcodec/ac3dsp.c View File

@@ -214,6 +214,31 @@ static void ac3_sum_square_butterfly_float_c(float sum[4],
}
}

static void ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int i, j;
float v0, v1;
if (out_ch == 2) {
for (i = 0; i < len; i++) {
v0 = v1 = 0.0f;
for (j = 0; j < in_ch; j++) {
v0 += samples[j][i] * matrix[j][0];
v1 += samples[j][i] * matrix[j][1];
}
samples[0][i] = v0;
samples[1][i] = v1;
}
} else if (out_ch == 1) {
for (i = 0; i < len; i++) {
v0 = 0.0f;
for (j = 0; j < in_ch; j++)
v0 += samples[j][i] * matrix[j][0];
samples[0][i] = v0;
}
}
}

av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
{
c->ac3_exponent_min = ac3_exponent_min_c;
@@ -227,6 +252,7 @@ av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
c->extract_exponents = ac3_extract_exponents_c;
c->sum_square_butterfly_int32 = ac3_sum_square_butterfly_int32_c;
c->sum_square_butterfly_float = ac3_sum_square_butterfly_float_c;
c->downmix = ac3_downmix_c;

if (ARCH_ARM)
ff_ac3dsp_init_arm(c, bit_exact);


+ 3
- 0
libavcodec/ac3dsp.h View File

@@ -131,6 +131,9 @@ typedef struct AC3DSPContext {

void (*sum_square_butterfly_float)(float sum[4], const float *coef0,
const float *coef1, int len);

void (*downmix)(float (*samples)[256], float (*matrix)[2], int out_ch,
int in_ch, int len);
} AC3DSPContext;

void ff_ac3dsp_init (AC3DSPContext *c, int bit_exact);


+ 0
- 4
libavcodec/dsputil.c View File

@@ -36,7 +36,6 @@
#include "mathops.h"
#include "mpegvideo.h"
#include "config.h"
#include "ac3dec.h"
#include "vorbis.h"
#include "diracdsp.h"

@@ -3032,9 +3031,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)

#if CONFIG_VORBIS_DECODER
c->vorbis_inverse_coupling = ff_vorbis_inverse_coupling;
#endif
#if CONFIG_AC3_DECODER
c->ac3_downmix = ff_ac3_downmix_c;
#endif
c->vector_fmul_reverse = vector_fmul_reverse_c;
c->vector_fmul_add = vector_fmul_add_c;


+ 0
- 1
libavcodec/dsputil.h View File

@@ -384,7 +384,6 @@ typedef struct DSPContext {

/* assume len is a multiple of 4, and arrays are 16-byte aligned */
void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);
void (*ac3_downmix)(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len);
/* assume len is a multiple of 16, and arrays are 32-byte aligned */
void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);
/* assume len is a multiple of 8, and src arrays are 16-byte aligned */


+ 2
- 2
libavcodec/mlp_parser.c View File

@@ -83,10 +83,10 @@ static const uint64_t thd_layout[13] = {
AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT, // LRrs
AV_CH_BACK_CENTER, // Cs
AV_CH_TOP_CENTER, // Ts
AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRsd - TODO: Surround Direct
AV_CH_SURROUND_DIRECT_LEFT|AV_CH_SURROUND_DIRECT_RIGHT, // LRsd
AV_CH_WIDE_LEFT|AV_CH_WIDE_RIGHT, // LRw
AV_CH_TOP_FRONT_CENTER, // Cvh
AV_CH_LOW_FREQUENCY // LFE2
AV_CH_LOW_FREQUENCY_2, // LFE2
};

static int mlp_samplerate(int in)


+ 121
- 0
libavcodec/x86/ac3dsp_init.c View File

@@ -19,9 +19,11 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "dsputil_mmx.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3dsp.h"

extern void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
@@ -49,6 +51,119 @@ extern void ff_ac3_extract_exponents_3dnow(uint8_t *exp, int32_t *coef, int nb_c
extern void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs);
extern void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs);

#if HAVE_SSE_INLINE

#define IF1(x) x
#define IF0(x)

#define MIX5(mono, stereo) \
__asm__ volatile ( \
"movss 0(%2), %%xmm5 \n" \
"movss 8(%2), %%xmm6 \n" \
"movss 24(%2), %%xmm7 \n" \
"shufps $0, %%xmm5, %%xmm5 \n" \
"shufps $0, %%xmm6, %%xmm6 \n" \
"shufps $0, %%xmm7, %%xmm7 \n" \
"1: \n" \
"movaps (%0, %1), %%xmm0 \n" \
"movaps 0x400(%0, %1), %%xmm1 \n" \
"movaps 0x800(%0, %1), %%xmm2 \n" \
"movaps 0xc00(%0, %1), %%xmm3 \n" \
"movaps 0x1000(%0, %1), %%xmm4 \n" \
"mulps %%xmm5, %%xmm0 \n" \
"mulps %%xmm6, %%xmm1 \n" \
"mulps %%xmm5, %%xmm2 \n" \
"mulps %%xmm7, %%xmm3 \n" \
"mulps %%xmm7, %%xmm4 \n" \
stereo("addps %%xmm1, %%xmm0 \n") \
"addps %%xmm1, %%xmm2 \n" \
"addps %%xmm3, %%xmm0 \n" \
"addps %%xmm4, %%xmm2 \n" \
mono("addps %%xmm2, %%xmm0 \n") \
"movaps %%xmm0, (%0, %1) \n" \
stereo("movaps %%xmm2, 0x400(%0, %1) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i) \
: "r"(samples[0] + len), "r"(matrix) \
: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \
"%xmm4", "%xmm5", "%xmm6", "%xmm7",) \
"memory" \
);

#define MIX_MISC(stereo) \
__asm__ volatile ( \
"1: \n" \
"movaps (%3, %0), %%xmm0 \n" \
stereo("movaps %%xmm0, %%xmm1 \n") \
"mulps %%xmm4, %%xmm0 \n" \
stereo("mulps %%xmm5, %%xmm1 \n") \
"lea 1024(%3, %0), %1 \n" \
"mov %5, %2 \n" \
"2: \n" \
"movaps (%1), %%xmm2 \n" \
stereo("movaps %%xmm2, %%xmm3 \n") \
"mulps (%4, %2), %%xmm2 \n" \
stereo("mulps 16(%4, %2), %%xmm3 \n") \
"addps %%xmm2, %%xmm0 \n" \
stereo("addps %%xmm3, %%xmm1 \n") \
"add $1024, %1 \n" \
"add $32, %2 \n" \
"jl 2b \n" \
"movaps %%xmm0, (%3, %0) \n" \
stereo("movaps %%xmm1, 1024(%3, %0) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i), "=&r"(j), "=&r"(k) \
: "r"(samples[0] + len), "r"(matrix_simd + in_ch), \
"g"((intptr_t) - 32 * (in_ch - 1)) \
: "memory" \
);

static void ac3_downmix_sse(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int (*matrix_cmp)[2] = (int(*)[2])matrix;
intptr_t i, j, k;

i = -len * sizeof(float);
if (in_ch == 5 && out_ch == 2 &&
!(matrix_cmp[0][1] | matrix_cmp[2][0] |
matrix_cmp[3][1] | matrix_cmp[4][0] |
(matrix_cmp[1][0] ^ matrix_cmp[1][1]) |
(matrix_cmp[0][0] ^ matrix_cmp[2][1]))) {
MIX5(IF0, IF1);
} else if (in_ch == 5 && out_ch == 1 &&
matrix_cmp[0][0] == matrix_cmp[2][0] &&
matrix_cmp[3][0] == matrix_cmp[4][0]) {
MIX5(IF1, IF0);
} else {
DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4];
j = 2 * in_ch * sizeof(float);
__asm__ volatile (
"1: \n"
"sub $8, %0 \n"
"movss (%2, %0), %%xmm4 \n"
"movss 4(%2, %0), %%xmm5 \n"
"shufps $0, %%xmm4, %%xmm4 \n"
"shufps $0, %%xmm5, %%xmm5 \n"
"movaps %%xmm4, (%1, %0, 4) \n"
"movaps %%xmm5, 16(%1, %0, 4) \n"
"jg 1b \n"
: "+&r"(j)
: "r"(matrix_simd), "r"(matrix)
: "memory"
);
if (out_ch == 2) {
MIX_MISC(IF1);
} else {
MIX_MISC(IF0);
}
}
}

#endif /* HAVE_SSE_INLINE */

av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
{
int mm_flags = av_get_cpu_flags();
@@ -89,4 +204,10 @@ av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
c->extract_exponents = ff_ac3_extract_exponents_ssse3;
}
}

#if HAVE_SSE_INLINE
if (INLINE_SSE(mm_flags)) {
c->downmix = ac3_downmix_sse;
}
#endif
}

+ 0
- 111
libavcodec/x86/dsputil_mmx.c View File

@@ -28,7 +28,6 @@
#include "libavcodec/h264dsp.h"
#include "libavcodec/mpegvideo.h"
#include "libavcodec/simple_idct.h"
#include "libavcodec/ac3dec.h"
#include "dsputil_mmx.h"
#include "idct_xvid.h"
#include "diracdsp_mmx.h"
@@ -2375,115 +2374,6 @@ static void vorbis_inverse_coupling_sse(float *mag, float *ang, int blocksize)
}
}

#define IF1(x) x
#define IF0(x)

#define MIX5(mono, stereo) \
__asm__ volatile ( \
"movss 0(%2), %%xmm5 \n" \
"movss 8(%2), %%xmm6 \n" \
"movss 24(%2), %%xmm7 \n" \
"shufps $0, %%xmm5, %%xmm5 \n" \
"shufps $0, %%xmm6, %%xmm6 \n" \
"shufps $0, %%xmm7, %%xmm7 \n" \
"1: \n" \
"movaps (%0, %1), %%xmm0 \n" \
"movaps 0x400(%0, %1), %%xmm1 \n" \
"movaps 0x800(%0, %1), %%xmm2 \n" \
"movaps 0xc00(%0, %1), %%xmm3 \n" \
"movaps 0x1000(%0, %1), %%xmm4 \n" \
"mulps %%xmm5, %%xmm0 \n" \
"mulps %%xmm6, %%xmm1 \n" \
"mulps %%xmm5, %%xmm2 \n" \
"mulps %%xmm7, %%xmm3 \n" \
"mulps %%xmm7, %%xmm4 \n" \
stereo("addps %%xmm1, %%xmm0 \n") \
"addps %%xmm1, %%xmm2 \n" \
"addps %%xmm3, %%xmm0 \n" \
"addps %%xmm4, %%xmm2 \n" \
mono("addps %%xmm2, %%xmm0 \n") \
"movaps %%xmm0, (%0, %1) \n" \
stereo("movaps %%xmm2, 0x400(%0, %1) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i) \
: "r"(samples[0] + len), "r"(matrix) \
: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \
"%xmm4", "%xmm5", "%xmm6", "%xmm7",) \
"memory" \
);

#define MIX_MISC(stereo) \
__asm__ volatile ( \
"1: \n" \
"movaps (%3, %0), %%xmm0 \n" \
stereo("movaps %%xmm0, %%xmm1 \n") \
"mulps %%xmm4, %%xmm0 \n" \
stereo("mulps %%xmm5, %%xmm1 \n") \
"lea 1024(%3, %0), %1 \n" \
"mov %5, %2 \n" \
"2: \n" \
"movaps (%1), %%xmm2 \n" \
stereo("movaps %%xmm2, %%xmm3 \n") \
"mulps (%4, %2), %%xmm2 \n" \
stereo("mulps 16(%4, %2), %%xmm3 \n") \
"addps %%xmm2, %%xmm0 \n" \
stereo("addps %%xmm3, %%xmm1 \n") \
"add $1024, %1 \n" \
"add $32, %2 \n" \
"jl 2b \n" \
"movaps %%xmm0, (%3, %0) \n" \
stereo("movaps %%xmm1, 1024(%3, %0) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i), "=&r"(j), "=&r"(k) \
: "r"(samples[0] + len), "r"(matrix_simd + in_ch), \
"g"((intptr_t) - 32 * (in_ch - 1)) \
: "memory" \
);

static void ac3_downmix_sse(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int (*matrix_cmp)[2] = (int(*)[2])matrix;
intptr_t i, j, k;

i = -len * sizeof(float);
if (in_ch == 5 && out_ch == 2 &&
!(matrix_cmp[0][1] | matrix_cmp[2][0] |
matrix_cmp[3][1] | matrix_cmp[4][0] |
(matrix_cmp[1][0] ^ matrix_cmp[1][1]) |
(matrix_cmp[0][0] ^ matrix_cmp[2][1]))) {
MIX5(IF0, IF1);
} else if (in_ch == 5 && out_ch == 1 &&
matrix_cmp[0][0] == matrix_cmp[2][0] &&
matrix_cmp[3][0] == matrix_cmp[4][0]) {
MIX5(IF1, IF0);
} else {
DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4];
j = 2 * in_ch * sizeof(float);
__asm__ volatile (
"1: \n"
"sub $8, %0 \n"
"movss (%2, %0), %%xmm4 \n"
"movss 4(%2, %0), %%xmm5 \n"
"shufps $0, %%xmm4, %%xmm4 \n"
"shufps $0, %%xmm5, %%xmm5 \n"
"movaps %%xmm4, (%1, %0, 4) \n"
"movaps %%xmm5, 16(%1, %0, 4) \n"
"jg 1b \n"
: "+&r"(j)
: "r"(matrix_simd), "r"(matrix)
: "memory"
);
if (out_ch == 2) {
MIX_MISC(IF1);
} else {
MIX_MISC(IF0);
}
}
}

#if HAVE_6REGS
static void vector_fmul_window_3dnowext(float *dst, const float *src0,
const float *src1, const float *win,
@@ -2958,7 +2848,6 @@ static void dsputil_init_sse(DSPContext *c, AVCodecContext *avctx, int mm_flags)
}

c->vorbis_inverse_coupling = vorbis_inverse_coupling_sse;
c->ac3_downmix = ac3_downmix_sse;

#if HAVE_6REGS
c->vector_fmul_window = vector_fmul_window_sse;


+ 4
- 0
libavformat/os_support.h View File

@@ -48,7 +48,11 @@
#endif /* defined(__MINGW32__) && !defined(__MINGW32CE__) */

#ifdef _WIN32
#if HAVE_DIRECT_H
#include <direct.h>
#elif HAVE_IO_H
#include <io.h>
#endif
#define mkdir(a, b) _mkdir(a)
#else
#include <sys/stat.h>


+ 1
- 0
libavresample/audio_mix_matrix.c View File

@@ -54,6 +54,7 @@
#define WIDE_RIGHT 32
#define SURROUND_DIRECT_LEFT 33
#define SURROUND_DIRECT_RIGHT 34
#define LOW_FREQUENCY_2 35

#define SQRT3_2 1.22474487139158904909 /* sqrt(3/2) */



+ 1
- 0
libavutil/audioconvert.c View File

@@ -59,6 +59,7 @@ static const struct channel_name channel_names[] = {
[32] = { "WR", "wide right" },
[33] = { "SDL", "surround direct left" },
[34] = { "SDR", "surround direct right" },
[35] = { "LFE2", "low frequency 2" },
};

static const char *get_channel_name(int channel_id)


+ 1
- 0
libavutil/audioconvert.h View File

@@ -62,6 +62,7 @@
#define AV_CH_WIDE_RIGHT 0x0000000100000000ULL
#define AV_CH_SURROUND_DIRECT_LEFT 0x0000000200000000ULL
#define AV_CH_SURROUND_DIRECT_RIGHT 0x0000000400000000ULL
#define AV_CH_LOW_FREQUENCY_2 0x0000000800000000ULL

/** Channel mask value used for AVCodecContext.request_channel_layout
to indicate that the user requests the channel order of the decoder output


+ 1
- 1
libavutil/version.h View File

@@ -39,7 +39,7 @@
*/

#define LIBAVUTIL_VERSION_MAJOR 51
#define LIBAVUTIL_VERSION_MINOR 72
#define LIBAVUTIL_VERSION_MINOR 73
#define LIBAVUTIL_VERSION_MICRO 100

#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \


+ 0
- 2
libswscale/swscale.c View File

@@ -628,8 +628,6 @@ static int swScale(SwsContext *c, const uint8_t *src[],
}
}
} else {
assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize * 2);
assert(chrUSrcPtr + vChrFilterSize - 1 < chrUPixBuf + vChrBufSize * 2);
if (c->yuv2packed1 && vLumFilterSize == 1 &&
vChrFilterSize <= 2) { // unscaled RGB
int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];


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