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avfilter/vf_ssim: add >8 bit depth suppport

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-12-15 22:33:42 +01:00
parent a5cf600ccb
commit 334fad3645
1 changed files with 119 additions and 12 deletions
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131
libavfilter/vf_ssim.c
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@ -51,6 +51,7 @@ typedef struct SSIMContext {
FILE *stats_file;
char *stats_file_str;
int nb_components;
int max;
uint64_t nb_frames;
double ssim[4], ssim_total;
char comps[4];
@ -60,6 +61,11 @@ typedef struct SSIMContext {
int planeheight[4];
int *temp;
int is_rgb;
float (*ssim_plane)(SSIMDSPContext *dsp,
uint8_t *main, int main_stride,
uint8_t *ref, int ref_stride,
int width, int height, void *temp,
int max);
SSIMDSPContext dsp;
} SSIMContext;
@ -87,9 +93,45 @@ static void set_meta(AVDictionary **metadata, const char *key, char comp, float
}
}
static void ssim_4x4xn(const uint8_t *main, ptrdiff_t main_stride,
const uint8_t *ref, ptrdiff_t ref_stride,
int (*sums)[4], int width)
static void ssim_4x4xn_16bit(const uint8_t *main8, ptrdiff_t main_stride,
const uint8_t *ref8, ptrdiff_t ref_stride,
int64_t (*sums)[4], int width)
{
const uint16_t *main16 = (const uint16_t *)main8;
const uint16_t *ref16 = (const uint16_t *)ref8;
int x, y, z;
main_stride >>= 1;
ref_stride >>= 1;
for (z = 0; z < width; z++) {
uint64_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
for (y = 0; y < 4; y++) {
for (x = 0; x < 4; x++) {
int a = main16[x + y * main_stride];
int b = ref16[x + y * ref_stride];
s1 += a;
s2 += b;
ss += a*a;
ss += b*b;
s12 += a*b;
}
}
sums[z][0] = s1;
sums[z][1] = s2;
sums[z][2] = ss;
sums[z][3] = s12;
main16 += 4;
ref16 += 4;
}
}
static void ssim_4x4xn_8bit(const uint8_t *main, ptrdiff_t main_stride,
const uint8_t *ref, ptrdiff_t ref_stride,
int (*sums)[4], int width)
{
int x, y, z;
@ -118,6 +160,22 @@ static void ssim_4x4xn(const uint8_t *main, ptrdiff_t main_stride,
}
}
static float ssim_end1x(int64_t s1, int64_t s2, int64_t ss, int64_t s12, int max)
{
int64_t ssim_c1 = (int64_t)(.01*.01*max*max*64 + .5);
int64_t ssim_c2 = (int64_t)(.03*.03*max*max*64*63 + .5);
int64_t fs1 = s1;
int64_t fs2 = s2;
int64_t fss = ss;
int64_t fs12 = s12;
int64_t vars = fss * 64 - fs1 * fs1 - fs2 * fs2;
int64_t covar = fs12 * 64 - fs1 * fs2;
return (float)(2 * fs1 * fs2 + ssim_c1) * (float)(2 * covar + ssim_c2)
/ ((float)(fs1 * fs1 + fs2 * fs2 + ssim_c1) * (float)(vars + ssim_c2));
}
static float ssim_end1(int s1, int s2, int ss, int s12)
{
static const int ssim_c1 = (int)(.01*.01*255*255*64 + .5);
@ -134,7 +192,21 @@ static float ssim_end1(int s1, int s2, int ss, int s12)
/ ((float)(fs1 * fs1 + fs2 * fs2 + ssim_c1) * (float)(vars + ssim_c2));
}
static float ssim_endn(const int (*sum0)[4], const int (*sum1)[4], int width)
static float ssim_endn_16bit(const int64_t (*sum0)[4], const int64_t (*sum1)[4], int width, int max)
{
float ssim = 0.0;
int i;
for (i = 0; i < width; i++)
ssim += ssim_end1x(sum0[i][0] + sum0[i + 1][0] + sum1[i][0] + sum1[i + 1][0],
sum0[i][1] + sum0[i + 1][1] + sum1[i][1] + sum1[i + 1][1],
sum0[i][2] + sum0[i + 1][2] + sum1[i][2] + sum1[i + 1][2],
sum0[i][3] + sum0[i + 1][3] + sum1[i][3] + sum1[i + 1][3],
max);
return ssim;
}
static float ssim_endn_8bit(const int (*sum0)[4], const int (*sum1)[4], int width)
{
float ssim = 0.0;
int i;
@ -147,10 +219,39 @@ static float ssim_endn(const int (*sum0)[4], const int (*sum1)[4], int width)
return ssim;
}
static float ssim_plane_16bit(SSIMDSPContext *dsp,
uint8_t *main, int main_stride,
uint8_t *ref, int ref_stride,
int width, int height, void *temp,
int max)
{
int z = 0, y;
float ssim = 0.0;
int64_t (*sum0)[4] = temp;
int64_t (*sum1)[4] = sum0 + (width >> 2) + 3;
width >>= 2;
height >>= 2;
for (y = 1; y < height; y++) {
for (; z <= y; z++) {
FFSWAP(void*, sum0, sum1);
ssim_4x4xn_16bit(&main[4 * z * main_stride], main_stride,
&ref[4 * z * ref_stride], ref_stride,
sum0, width);
}
ssim += ssim_endn_16bit((const int64_t (*)[4])sum0, (const int64_t (*)[4])sum1, width - 1, max);
}
return ssim / ((height - 1) * (width - 1));
}
static float ssim_plane(SSIMDSPContext *dsp,
uint8_t *main, int main_stride,
uint8_t *ref, int ref_stride,
int width, int height, void *temp)
int width, int height, void *temp,
int max)
{
int z = 0, y;
float ssim = 0.0;
@ -190,9 +291,10 @@ static AVFrame *do_ssim(AVFilterContext *ctx, AVFrame *main,
s->nb_frames++;
for (i = 0; i < s->nb_components; i++) {
c[i] = ssim_plane(&s->dsp, main->data[i], main->linesize[i],
ref->data[i], ref->linesize[i],
s->planewidth[i], s->planeheight[i], s->temp);
c[i] = s->ssim_plane(&s->dsp, main->data[i], main->linesize[i],
ref->data[i], ref->linesize[i],
s->planewidth[i], s->planeheight[i], s->temp,
s->max);
ssimv += s->coefs[i] * c[i];
s->ssim[i] += c[i];
}
@ -248,12 +350,15 @@ static av_cold int init(AVFilterContext *ctx)
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10,
AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_GBRP,
#define PF(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf, AV_PIX_FMT_GBR##suf
PF(P9), PF(P10), PF(P12), PF(P14), PF(P16),
AV_PIX_FMT_NONE
};
@ -297,12 +402,14 @@ static int config_input_ref(AVFilterLink *inlink)
for (i = 0; i < s->nb_components; i++)
s->coefs[i] = (double) s->planeheight[i] * s->planewidth[i] / sum;
s->temp = av_malloc((2 * inlink->w + 12) * sizeof(*s->temp));
s->temp = av_malloc_array((2 * inlink->w + 12), sizeof(*s->temp) * (1 + (desc->comp[0].depth > 8)));
if (!s->temp)
return AVERROR(ENOMEM);
s->max = (1 << desc->comp[0].depth) - 1;
s->dsp.ssim_4x4_line = ssim_4x4xn;
s->dsp.ssim_end_line = ssim_endn;
s->ssim_plane = desc->comp[0].depth > 8 ? ssim_plane_16bit : ssim_plane;
s->dsp.ssim_4x4_line = ssim_4x4xn_8bit;
s->dsp.ssim_end_line = ssim_endn_8bit;
if (ARCH_X86)
ff_ssim_init_x86(&s->dsp);