The Tor Browser: media/libvpx/vp9/common/vp9_postproc.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_postproc.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_postproc.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include <math.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include "./vpx_config.h"
 #include "vpx_scale/yv12config.h"
 #include "vp9/common/vp9_postproc.h"
 #include "vp9/common/vp9_textblit.h"
 #include "vpx_scale/vpx_scale.h"
 #include "vp9/common/vp9_systemdependent.h"
 #include "./vp9_rtcd.h"
 #include "./vpx_scale_rtcd.h"
 #define RGB_TO_YUV(t)                                            \
   ( (0.257*(float)(t >> 16))  + (0.504*(float)(t >> 8 & 0xff)) + \
     (0.098*(float)(t & 0xff)) + 16),                             \
   (-(0.148*(float)(t >> 16))  - (0.291*(float)(t >> 8 & 0xff)) + \
     (0.439*(float)(t & 0xff)) + 128),                            \
   ( (0.439*(float)(t >> 16))  - (0.368*(float)(t >> 8 & 0xff)) - \
     (0.071*(float)(t & 0xff)) + 128)
 /* global constants */
 #if 0 && CONFIG_POSTPROC_VISUALIZER
 static const unsigned char MB_PREDICTION_MODE_colors[MB_MODE_COUNT][3] = {
   { RGB_TO_YUV(0x98FB98) },   /* PaleGreen */
   { RGB_TO_YUV(0x00FF00) },   /* Green */
   { RGB_TO_YUV(0xADFF2F) },   /* GreenYellow */
   { RGB_TO_YUV(0x8F0000) },   /* Dark Red */
   { RGB_TO_YUV(0x008F8F) },   /* Dark Cyan */
   { RGB_TO_YUV(0x008F8F) },   /* Dark Cyan */
   { RGB_TO_YUV(0x008F8F) },   /* Dark Cyan */
   { RGB_TO_YUV(0x8F0000) },   /* Dark Red */
   { RGB_TO_YUV(0x8F0000) },   /* Dark Red */
   { RGB_TO_YUV(0x228B22) },   /* ForestGreen */
   { RGB_TO_YUV(0x006400) },   /* DarkGreen */
   { RGB_TO_YUV(0x98F5FF) },   /* Cadet Blue */
   { RGB_TO_YUV(0x6CA6CD) },   /* Sky Blue */
   { RGB_TO_YUV(0x00008B) },   /* Dark blue */
   { RGB_TO_YUV(0x551A8B) },   /* Purple */
   { RGB_TO_YUV(0xFF0000) }    /* Red */
   { RGB_TO_YUV(0xCC33FF) },   /* Magenta */
 };
 static const unsigned char B_PREDICTION_MODE_colors[INTRA_MODES][3] = {
   { RGB_TO_YUV(0x6633ff) },   /* Purple */
   { RGB_TO_YUV(0xcc33ff) },   /* Magenta */
   { RGB_TO_YUV(0xff33cc) },   /* Pink */
   { RGB_TO_YUV(0xff3366) },   /* Coral */
   { RGB_TO_YUV(0x3366ff) },   /* Blue */
   { RGB_TO_YUV(0xed00f5) },   /* Dark Blue */
   { RGB_TO_YUV(0x2e00b8) },   /* Dark Purple */
   { RGB_TO_YUV(0xff6633) },   /* Orange */
   { RGB_TO_YUV(0x33ccff) },   /* Light Blue */
   { RGB_TO_YUV(0x8ab800) },   /* Green */
   { RGB_TO_YUV(0xffcc33) },   /* Light Orange */
   { RGB_TO_YUV(0x33ffcc) },   /* Aqua */
   { RGB_TO_YUV(0x66ff33) },   /* Light Green */
   { RGB_TO_YUV(0xccff33) },   /* Yellow */
 };
 static const unsigned char MV_REFERENCE_FRAME_colors[MAX_REF_FRAMES][3] = {
   { RGB_TO_YUV(0x00ff00) },   /* Blue */
   { RGB_TO_YUV(0x0000ff) },   /* Green */
   { RGB_TO_YUV(0xffff00) },   /* Yellow */
   { RGB_TO_YUV(0xff0000) },   /* Red */
 };
 #endif
 static const short kernel5[] = {
 , 1, 4, 1, 1
 };
 const short vp9_rv[] = {
 , 5, 2, 2, 8, 12, 4, 9, 8, 3,
 , 3, 9, 0, 0, 0, 8, 3, 14, 4,
 , 1, 11, 14, 1, 14, 9, 6, 12, 11,
 , 6, 10, 0, 0, 8, 9, 0, 3, 14,
 , 11, 13, 4, 2, 9, 0, 3, 9, 6,
 , 2, 3, 14, 13, 1, 8, 2, 9, 7,
 , 3, 1, 13, 13, 6, 6, 5, 2, 7,
 , 9, 11, 8, 7, 3, 2, 0, 13, 13,
 , 4, 12, 5, 12, 10, 8, 10, 13, 10,
 , 14, 4, 10, 0, 8, 11, 1, 13, 7,
 , 14, 6, 14, 13, 2, 13, 5, 4, 4,
 , 10, 0, 5, 13, 2, 12, 7, 11, 13,
 , 0, 4, 10, 7, 2, 7, 2, 2, 5,
 , 4, 7, 3, 3, 14, 14, 5, 9, 13,
 , 14, 3, 6, 3, 0, 11, 8, 13, 1,
 , 1, 12, 0, 10, 9, 7, 6, 2, 8,
 , 2, 13, 7, 1, 13, 14, 7, 6, 7,
 , 6, 10, 11, 7, 8, 7, 5, 14, 8,
 , 4, 0, 8, 7, 10, 0, 8, 14, 11,
 , 12, 5, 7, 14, 3, 14, 5, 2, 6,
 , 12, 12, 8, 0, 11, 13, 1, 2, 0,
 , 10, 14, 7, 8, 0, 4, 11, 0, 8,
 , 3, 10, 5, 8, 0, 11, 6, 7, 8,
 , 7, 13, 9, 2, 5, 1, 5, 10, 2,
 , 3, 5, 6, 10, 8, 9, 4, 11, 14,
 , 10, 0, 5, 13, 2, 12, 7, 11, 13,
 , 0, 4, 10, 7, 2, 7, 2, 2, 5,
 , 4, 7, 3, 3, 14, 14, 5, 9, 13,
 , 14, 3, 6, 3, 0, 11, 8, 13, 1,
 , 1, 12, 0, 10, 9, 7, 6, 2, 8,
 , 2, 13, 7, 1, 13, 14, 7, 6, 7,
 , 6, 10, 11, 7, 8, 7, 5, 14, 8,
 , 4, 0, 8, 7, 10, 0, 8, 14, 11,
 , 12, 5, 7, 14, 3, 14, 5, 2, 6,
 , 12, 12, 8, 0, 11, 13, 1, 2, 0,
 , 10, 14, 7, 8, 0, 4, 11, 0, 8,
 , 3, 10, 5, 8, 0, 11, 6, 7, 8,
 , 7, 13, 9, 2, 5, 1, 5, 10, 2,
 , 3, 5, 6, 10, 8, 9, 4, 11, 14,
 , 8, 3, 7, 8, 5, 11, 4, 12, 3,
 , 9, 14, 8, 14, 13, 4, 3, 1, 2,
 , 6, 5, 4, 4, 11, 4, 6, 2, 1,
 , 8, 8, 12, 13, 5, 14, 10, 12, 13,
 , 9, 5, 5, 11, 10, 13, 9, 10, 13,
 };
 /****************************************************************************
  */
 void vp9_post_proc_down_and_across_c(const uint8_t *src_ptr,
                                      uint8_t *dst_ptr,
                                      int src_pixels_per_line,
                                      int dst_pixels_per_line,
                                      int rows,
                                      int cols,
                                      int flimit) {
   uint8_t const *p_src;
   uint8_t *p_dst;
   int row;
   int col;
   int i;
   int v;
   int pitch = src_pixels_per_line;
   uint8_t d[8];
   (void)dst_pixels_per_line;
   for (row = 0; row < rows; row++) {
     /* post_proc_down for one row */
     p_src = src_ptr;
     p_dst = dst_ptr;
     for (col = 0; col < cols; col++) {
       int kernel = 4;
       int v = p_src[col];
       for (i = -2; i <= 2; i++) {
         if (abs(v - p_src[col + i * pitch]) > flimit)
           goto down_skip_convolve;
         kernel += kernel5[2 + i] * p_src[col + i * pitch];
       }
       v = (kernel >> 3);
     down_skip_convolve:
       p_dst[col] = v;
     }
     /* now post_proc_across */
     p_src = dst_ptr;
     p_dst = dst_ptr;
     for (i = 0; i < 8; i++)
       d[i] = p_src[i];
     for (col = 0; col < cols; col++) {
       int kernel = 4;
       v = p_src[col];
       d[col & 7] = v;
       for (i = -2; i <= 2; i++) {
         if (abs(v - p_src[col + i]) > flimit)
           goto across_skip_convolve;
         kernel += kernel5[2 + i] * p_src[col + i];
       }
       d[col & 7] = (kernel >> 3);
     across_skip_convolve:
       if (col >= 2)
         p_dst[col - 2] = d[(col - 2) & 7];
     }
     /* handle the last two pixels */
     p_dst[col - 2] = d[(col - 2) & 7];
     p_dst[col - 1] = d[(col - 1) & 7];
     /* next row */
     src_ptr += pitch;
     dst_ptr += pitch;
   }
 }
 static int q2mbl(int x) {
   if (x < 20) x = 20;
   x = 50 + (x - 50) * 10 / 8;
   return x * x / 3;
 }
 void vp9_mbpost_proc_across_ip_c(uint8_t *src, int pitch,
                                  int rows, int cols, int flimit) {
   int r, c, i;
   uint8_t *s = src;
   uint8_t d[16];
   for (r = 0; r < rows; r++) {
     int sumsq = 0;
     int sum   = 0;
     for (i = -8; i <= 6; i++) {
       sumsq += s[i] * s[i];
       sum   += s[i];
       d[i + 8] = 0;
     }
     for (c = 0; c < cols + 8; c++) {
       int x = s[c + 7] - s[c - 8];
       int y = s[c + 7] + s[c - 8];
       sum  += x;
       sumsq += x * y;
       d[c & 15] = s[c];
       if (sumsq * 15 - sum * sum < flimit) {
         d[c & 15] = (8 + sum + s[c]) >> 4;
       }
       s[c - 8] = d[(c - 8) & 15];
     }
     s += pitch;
   }
 }
 void vp9_mbpost_proc_down_c(uint8_t *dst, int pitch,
                             int rows, int cols, int flimit) {
   int r, c, i;
   const short *rv3 = &vp9_rv[63 & rand()]; // NOLINT
   for (c = 0; c < cols; c++) {
     uint8_t *s = &dst[c];
     int sumsq = 0;
     int sum   = 0;
     uint8_t d[16];
     const short *rv2 = rv3 + ((c * 17) & 127);
     for (i = -8; i <= 6; i++) {
       sumsq += s[i * pitch] * s[i * pitch];
       sum   += s[i * pitch];
     }
     for (r = 0; r < rows + 8; r++) {
       sumsq += s[7 * pitch] * s[ 7 * pitch] - s[-8 * pitch] * s[-8 * pitch];
       sum  += s[7 * pitch] - s[-8 * pitch];
       d[r & 15] = s[0];
       if (sumsq * 15 - sum * sum < flimit) {
         d[r & 15] = (rv2[r & 127] + sum + s[0]) >> 4;
       }
       s[-8 * pitch] = d[(r - 8) & 15];
       s += pitch;
     }
   }
 }
 static void deblock_and_de_macro_block(YV12_BUFFER_CONFIG   *source,
                                        YV12_BUFFER_CONFIG   *post,
                                        int                   q,
                                        int                   low_var_thresh,
                                        int                   flag) {
   double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
   int ppl = (int)(level + .5);
   (void) low_var_thresh;
   (void) flag;
   vp9_post_proc_down_and_across(source->y_buffer, post->y_buffer,
                                 source->y_stride, post->y_stride,
                                 source->y_height, source->y_width, ppl);
   vp9_mbpost_proc_across_ip(post->y_buffer, post->y_stride, post->y_height,
                             post->y_width, q2mbl(q));
   vp9_mbpost_proc_down(post->y_buffer, post->y_stride, post->y_height,
                        post->y_width, q2mbl(q));
   vp9_post_proc_down_and_across(source->u_buffer, post->u_buffer,
                                 source->uv_stride, post->uv_stride,
                                 source->uv_height, source->uv_width, ppl);
   vp9_post_proc_down_and_across(source->v_buffer, post->v_buffer,
                                 source->uv_stride, post->uv_stride,
                                 source->uv_height, source->uv_width, ppl);
 }
 void vp9_deblock(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst,
                  int q) {
   const int ppl = (int)(6.0e-05 * q * q * q - 0.0067 * q * q + 0.306 * q
                         + 0.0065 + 0.5);
   int i;
   const uint8_t *const srcs[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
                                   src->alpha_buffer};
   const int src_strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
                               src->alpha_stride};
   const int src_widths[4] = {src->y_width, src->uv_width, src->uv_width,
                              src->alpha_width};
   const int src_heights[4] = {src->y_height, src->uv_height, src->uv_height,
                               src->alpha_height};
   uint8_t *const dsts[4] = {dst->y_buffer, dst->u_buffer, dst->v_buffer,
                             dst->alpha_buffer};
   const int dst_strides[4] = {dst->y_stride, dst->uv_stride, dst->uv_stride,
                               dst->alpha_stride};
   for (i = 0; i < MAX_MB_PLANE; ++i)
     vp9_post_proc_down_and_across(srcs[i], dsts[i],
                                   src_strides[i], dst_strides[i],
                                   src_heights[i], src_widths[i], ppl);
 }
 void vp9_denoise(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst,
                  int q) {
   const int ppl = (int)(6.0e-05 * q * q * q - 0.0067 * q * q + 0.306 * q
                         + 0.0065 + 0.5);
   int i;
   const uint8_t *const srcs[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
                                   src->alpha_buffer};
   const int src_strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
                               src->alpha_stride};
   const int src_widths[4] = {src->y_width, src->uv_width, src->uv_width,
                              src->alpha_width};
   const int src_heights[4] = {src->y_height, src->uv_height, src->uv_height,
                               src->alpha_height};
   uint8_t *const dsts[4] = {dst->y_buffer, dst->u_buffer, dst->v_buffer,
                             dst->alpha_buffer};
   const int dst_strides[4] = {dst->y_stride, dst->uv_stride, dst->uv_stride,
                               dst->alpha_stride};
   for (i = 0; i < MAX_MB_PLANE; ++i) {
     const int src_stride = src_strides[i];
     const uint8_t *const src = srcs[i] + 2 * src_stride + 2;
     const int src_width = src_widths[i] - 4;
     const int src_height = src_heights[i] - 4;
     const int dst_stride = dst_strides[i];
     uint8_t *const dst = dsts[i] + 2 * dst_stride + 2;
     vp9_post_proc_down_and_across(src, dst, src_stride, dst_stride,
                                   src_height, src_width, ppl);
   }
 }
 double vp9_gaussian(double sigma, double mu, double x) {
   return 1 / (sigma * sqrt(2.0 * 3.14159265)) *
          (exp(-(x - mu) * (x - mu) / (2 * sigma * sigma)));
 }
 static void fillrd(struct postproc_state *state, int q, int a) {
   char char_dist[300];
   double sigma;
   int ai = a, qi = q, i;
   vp9_clear_system_state();
   sigma = ai + .5 + .6 * (63 - qi) / 63.0;
   /* set up a lookup table of 256 entries that matches
    * a gaussian distribution with sigma determined by q.
    */
   {
     double i;
     int next, j;
     next = 0;
     for (i = -32; i < 32; i++) {
       int a = (int)(.5 + 256 * vp9_gaussian(sigma, 0, i));
       if (a) {
         for (j = 0; j < a; j++) {
           char_dist[next + j] = (char) i;
         }
         next = next + j;
       }
     }
     for (; next < 256; next++)
       char_dist[next] = 0;
   }
   for (i = 0; i < 3072; i++) {
     state->noise[i] = char_dist[rand() & 0xff];  // NOLINT
   }
   for (i = 0; i < 16; i++) {
     state->blackclamp[i] = -char_dist[0];
     state->whiteclamp[i] = -char_dist[0];
     state->bothclamp[i] = -2 * char_dist[0];
   }
   state->last_q = q;
   state->last_noise = a;
 }
 /****************************************************************************
  *
  *  ROUTINE       : plane_add_noise_c
  *
  *  INPUTS        : unsigned char *Start  starting address of buffer to
  *                                        add gaussian noise to
  *                  unsigned int width    width of plane
  *                  unsigned int height   height of plane
  *                  int  pitch    distance between subsequent lines of frame
  *                  int  q        quantizer used to determine amount of noise
  *                                  to add
  *
  *  OUTPUTS       : None.
  *
  *  RETURNS       : void.
  *
  *  FUNCTION      : adds gaussian noise to a plane of pixels
  *
  *  SPECIAL NOTES : None.
  *
  ****************************************************************************/
 void vp9_plane_add_noise_c(uint8_t *start, char *noise,
                            char blackclamp[16],
                            char whiteclamp[16],
                            char bothclamp[16],
                            unsigned int width, unsigned int height, int pitch) {
   unsigned int i, j;
   for (i = 0; i < height; i++) {
     uint8_t *pos = start + i * pitch;
     char  *ref = (char *)(noise + (rand() & 0xff));  // NOLINT
     for (j = 0; j < width; j++) {
       if (pos[j] < blackclamp[0])
         pos[j] = blackclamp[0];
       if (pos[j] > 255 + whiteclamp[0])
         pos[j] = 255 + whiteclamp[0];
       pos[j] += ref[j];
     }
   }
 }
 /* Blend the macro block with a solid colored square.  Leave the
  * edges unblended to give distinction to macro blocks in areas
  * filled with the same color block.
  */
 void vp9_blend_mb_inner_c(uint8_t *y, uint8_t *u, uint8_t *v,
                           int y1, int u1, int v1, int alpha, int stride) {
   int i, j;
   int y1_const = y1 * ((1 << 16) - alpha);
   int u1_const = u1 * ((1 << 16) - alpha);
   int v1_const = v1 * ((1 << 16) - alpha);
   y += 2 * stride + 2;
   for (i = 0; i < 12; i++) {
     for (j = 0; j < 12; j++) {
       y[j] = (y[j] * alpha + y1_const) >> 16;
     }
     y += stride;
   }
   stride >>= 1;
   u += stride + 1;
   v += stride + 1;
   for (i = 0; i < 6; i++) {
     for (j = 0; j < 6; j++) {
       u[j] = (u[j] * alpha + u1_const) >> 16;
       v[j] = (v[j] * alpha + v1_const) >> 16;
     }
     u += stride;
     v += stride;
   }
 }
 /* Blend only the edge of the macro block.  Leave center
  * unblended to allow for other visualizations to be layered.
  */
 void vp9_blend_mb_outer_c(uint8_t *y, uint8_t *u, uint8_t *v,
                           int y1, int u1, int v1, int alpha, int stride) {
   int i, j;
   int y1_const = y1 * ((1 << 16) - alpha);
   int u1_const = u1 * ((1 << 16) - alpha);
   int v1_const = v1 * ((1 << 16) - alpha);
   for (i = 0; i < 2; i++) {
     for (j = 0; j < 16; j++) {
       y[j] = (y[j] * alpha + y1_const) >> 16;
     }
     y += stride;
   }
   for (i = 0; i < 12; i++) {
     y[0]  = (y[0] * alpha  + y1_const) >> 16;
     y[1]  = (y[1] * alpha  + y1_const) >> 16;
     y[14] = (y[14] * alpha + y1_const) >> 16;
     y[15] = (y[15] * alpha + y1_const) >> 16;
     y += stride;
   }
   for (i = 0; i < 2; i++) {
     for (j = 0; j < 16; j++) {
       y[j] = (y[j] * alpha + y1_const) >> 16;
     }
     y += stride;
   }
   stride >>= 1;
   for (j = 0; j < 8; j++) {
     u[j] = (u[j] * alpha + u1_const) >> 16;
     v[j] = (v[j] * alpha + v1_const) >> 16;
   }
   u += stride;
   v += stride;
   for (i = 0; i < 6; i++) {
     u[0] = (u[0] * alpha + u1_const) >> 16;
     v[0] = (v[0] * alpha + v1_const) >> 16;
     u[7] = (u[7] * alpha + u1_const) >> 16;
     v[7] = (v[7] * alpha + v1_const) >> 16;
     u += stride;
     v += stride;
   }
   for (j = 0; j < 8; j++) {
     u[j] = (u[j] * alpha + u1_const) >> 16;
     v[j] = (v[j] * alpha + v1_const) >> 16;
   }
 }
 void vp9_blend_b_c(uint8_t *y, uint8_t *u, uint8_t *v,
                    int y1, int u1, int v1, int alpha, int stride) {
   int i, j;
   int y1_const = y1 * ((1 << 16) - alpha);
   int u1_const = u1 * ((1 << 16) - alpha);
   int v1_const = v1 * ((1 << 16) - alpha);
   for (i = 0; i < 4; i++) {
     for (j = 0; j < 4; j++) {
       y[j] = (y[j] * alpha + y1_const) >> 16;
     }
     y += stride;
   }
   stride >>= 1;
   for (i = 0; i < 2; i++) {
     for (j = 0; j < 2; j++) {
       u[j] = (u[j] * alpha + u1_const) >> 16;
       v[j] = (v[j] * alpha + v1_const) >> 16;
     }
     u += stride;
     v += stride;
   }
 }
 static void constrain_line(int x0, int *x1, int y0, int *y1,
                            int width, int height) {
   int dx;
   int dy;
   if (*x1 > width) {
     dx = *x1 - x0;
     dy = *y1 - y0;
     *x1 = width;
     if (dx)
       *y1 = ((width - x0) * dy) / dx + y0;
   }
   if (*x1 < 0) {
     dx = *x1 - x0;
     dy = *y1 - y0;
     *x1 = 0;
     if (dx)
       *y1 = ((0 - x0) * dy) / dx + y0;
   }
   if (*y1 > height) {
     dx = *x1 - x0;
     dy = *y1 - y0;
     *y1 = height;
     if (dy)
       *x1 = ((height - y0) * dx) / dy + x0;
   }
   if (*y1 < 0) {
     dx = *x1 - x0;
     dy = *y1 - y0;
     *y1 = 0;
     if (dy)
       *x1 = ((0 - y0) * dx) / dy + x0;
   }
 }
 int vp9_post_proc_frame(struct VP9Common *cm,
                         YV12_BUFFER_CONFIG *dest, vp9_ppflags_t *ppflags) {
   int q = cm->lf.filter_level * 10 / 6;
   int flags = ppflags->post_proc_flag;
   int deblock_level = ppflags->deblocking_level;
   int noise_level = ppflags->noise_level;
   if (!cm->frame_to_show)
     return -1;
   if (q > 63)
     q = 63;
   if (!flags) {
     *dest = *cm->frame_to_show;
     return 0;
   }
 #if ARCH_X86||ARCH_X86_64
   vpx_reset_mmx_state();
 #endif
   if (flags & VP9D_DEMACROBLOCK) {
     deblock_and_de_macro_block(cm->frame_to_show, &cm->post_proc_buffer,
                                q + (deblock_level - 5) * 10, 1, 0);
   } else if (flags & VP9D_DEBLOCK) {
     vp9_deblock(cm->frame_to_show, &cm->post_proc_buffer, q);
   } else {
     vp8_yv12_copy_frame(cm->frame_to_show, &cm->post_proc_buffer);
   }
   if (flags & VP9D_ADDNOISE) {
     if (cm->postproc_state.last_q != q
         || cm->postproc_state.last_noise != noise_level) {
       fillrd(&cm->postproc_state, 63 - q, noise_level);
     }
     vp9_plane_add_noise(cm->post_proc_buffer.y_buffer,
                         cm->postproc_state.noise,
                         cm->postproc_state.blackclamp,
                         cm->postproc_state.whiteclamp,
                         cm->postproc_state.bothclamp,
                         cm->post_proc_buffer.y_width,
                         cm->post_proc_buffer.y_height,
                         cm->post_proc_buffer.y_stride);
   }
 #if 0 && CONFIG_POSTPROC_VISUALIZER
   if (flags & VP9D_DEBUG_TXT_FRAME_INFO) {
     char message[512];
     snprintf(message, sizeof(message) -1,
              "F%1dG%1dQ%3dF%3dP%d_s%dx%d",
              (cm->frame_type == KEY_FRAME),
              cm->refresh_golden_frame,
              cm->base_qindex,
              cm->filter_level,
              flags,
              cm->mb_cols, cm->mb_rows);
     vp9_blit_text(message, cm->post_proc_buffer.y_buffer,
                   cm->post_proc_buffer.y_stride);
   }
   if (flags & VP9D_DEBUG_TXT_MBLK_MODES) {
     int i, j;
     uint8_t *y_ptr;
     YV12_BUFFER_CONFIG *post = &cm->post_proc_buffer;
     int mb_rows = post->y_height >> 4;
     int mb_cols = post->y_width  >> 4;
     int mb_index = 0;
     MODE_INFO *mi = cm->mi;
     y_ptr = post->y_buffer + 4 * post->y_stride + 4;
     /* vp9_filter each macro block */
     for (i = 0; i < mb_rows; i++) {
       for (j = 0; j < mb_cols; j++) {
         char zz[4];
         snprintf(zz, sizeof(zz) - 1, "%c", mi[mb_index].mbmi.mode + 'a');
         vp9_blit_text(zz, y_ptr, post->y_stride);
         mb_index++;
         y_ptr += 16;
       }
       mb_index++; /* border */
       y_ptr += post->y_stride  * 16 - post->y_width;
     }
   }
   if (flags & VP9D_DEBUG_TXT_DC_DIFF) {
     int i, j;
     uint8_t *y_ptr;
     YV12_BUFFER_CONFIG *post = &cm->post_proc_buffer;
     int mb_rows = post->y_height >> 4;
     int mb_cols = post->y_width  >> 4;
     int mb_index = 0;
     MODE_INFO *mi = cm->mi;
     y_ptr = post->y_buffer + 4 * post->y_stride + 4;
     /* vp9_filter each macro block */
     for (i = 0; i < mb_rows; i++) {
       for (j = 0; j < mb_cols; j++) {
         char zz[4];
         int dc_diff = !(mi[mb_index].mbmi.mode != I4X4_PRED &&
                         mi[mb_index].mbmi.mode != SPLITMV &&
                         mi[mb_index].mbmi.skip_coeff);
         if (cm->frame_type == KEY_FRAME)
           snprintf(zz, sizeof(zz) - 1, "a");
         else
           snprintf(zz, sizeof(zz) - 1, "%c", dc_diff + '0');
         vp9_blit_text(zz, y_ptr, post->y_stride);
         mb_index++;
         y_ptr += 16;
       }
       mb_index++; /* border */
       y_ptr += post->y_stride  * 16 - post->y_width;
     }
   }
   if (flags & VP9D_DEBUG_TXT_RATE_INFO) {
     char message[512];
     snprintf(message, sizeof(message),
              "Bitrate: %10.2f framerate: %10.2f ",
              cm->bitrate, cm->framerate);
     vp9_blit_text(message, cm->post_proc_buffer.y_buffer,
                   cm->post_proc_buffer.y_stride);
   }
   /* Draw motion vectors */
   if ((flags & VP9D_DEBUG_DRAW_MV) && ppflags->display_mv_flag) {
     YV12_BUFFER_CONFIG *post = &cm->post_proc_buffer;
     int width  = post->y_width;
     int height = post->y_height;
     uint8_t *y_buffer = cm->post_proc_buffer.y_buffer;
     int y_stride = cm->post_proc_buffer.y_stride;
     MODE_INFO *mi = cm->mi;
     int x0, y0;
     for (y0 = 0; y0 < height; y0 += 16) {
       for (x0 = 0; x0 < width; x0 += 16) {
         int x1, y1;
         if (!(ppflags->display_mv_flag & (1 << mi->mbmi.mode))) {
           mi++;
           continue;
         }
         if (mi->mbmi.mode == SPLITMV) {
           switch (mi->mbmi.partitioning) {
             case PARTITIONING_16X8 : {  /* mv_top_bottom */
               union b_mode_info *bmi = &mi->bmi[0];
               MV *mv = &bmi->mv.as_mv;
               x1 = x0 + 8 + (mv->col >> 3);
               y1 = y0 + 4 + (mv->row >> 3);
               constrain_line(x0 + 8, &x1, y0 + 4, &y1, width, height);
               vp9_blit_line(x0 + 8,  x1, y0 + 4,  y1, y_buffer, y_stride);
               bmi = &mi->bmi[8];
               x1 = x0 + 8 + (mv->col >> 3);
               y1 = y0 + 12 + (mv->row >> 3);
               constrain_line(x0 + 8, &x1, y0 + 12, &y1, width, height);
               vp9_blit_line(x0 + 8,  x1, y0 + 12,  y1, y_buffer, y_stride);
               break;
             }
             case PARTITIONING_8X16 : {  /* mv_left_right */
               union b_mode_info *bmi = &mi->bmi[0];
               MV *mv = &bmi->mv.as_mv;
               x1 = x0 + 4 + (mv->col >> 3);
               y1 = y0 + 8 + (mv->row >> 3);
               constrain_line(x0 + 4, &x1, y0 + 8, &y1, width, height);
               vp9_blit_line(x0 + 4,  x1, y0 + 8,  y1, y_buffer, y_stride);
               bmi = &mi->bmi[2];
               x1 = x0 + 12 + (mv->col >> 3);
               y1 = y0 + 8 + (mv->row >> 3);
               constrain_line(x0 + 12, &x1, y0 + 8, &y1, width, height);
               vp9_blit_line(x0 + 12,  x1, y0 + 8,  y1, y_buffer, y_stride);
               break;
             }
             case PARTITIONING_8X8 : {  /* mv_quarters   */
               union b_mode_info *bmi = &mi->bmi[0];
               MV *mv = &bmi->mv.as_mv;
               x1 = x0 + 4 + (mv->col >> 3);
               y1 = y0 + 4 + (mv->row >> 3);
               constrain_line(x0 + 4, &x1, y0 + 4, &y1, width, height);
               vp9_blit_line(x0 + 4,  x1, y0 + 4,  y1, y_buffer, y_stride);
               bmi = &mi->bmi[2];
               x1 = x0 + 12 + (mv->col >> 3);
               y1 = y0 + 4 + (mv->row >> 3);
               constrain_line(x0 + 12, &x1, y0 + 4, &y1, width, height);
               vp9_blit_line(x0 + 12,  x1, y0 + 4,  y1, y_buffer, y_stride);
               bmi = &mi->bmi[8];
               x1 = x0 + 4 + (mv->col >> 3);
               y1 = y0 + 12 + (mv->row >> 3);
               constrain_line(x0 + 4, &x1, y0 + 12, &y1, width, height);
               vp9_blit_line(x0 + 4,  x1, y0 + 12,  y1, y_buffer, y_stride);
               bmi = &mi->bmi[10];
               x1 = x0 + 12 + (mv->col >> 3);
               y1 = y0 + 12 + (mv->row >> 3);
               constrain_line(x0 + 12, &x1, y0 + 12, &y1, width, height);
               vp9_blit_line(x0 + 12,  x1, y0 + 12,  y1, y_buffer, y_stride);
               break;
             }
             case PARTITIONING_4X4:
             default : {
               union b_mode_info *bmi = mi->bmi;
               int bx0, by0;
               for (by0 = y0; by0 < (y0 + 16); by0 += 4) {
                 for (bx0 = x0; bx0 < (x0 + 16); bx0 += 4) {
                   MV *mv = &bmi->mv.as_mv;
                   x1 = bx0 + 2 + (mv->col >> 3);
                   y1 = by0 + 2 + (mv->row >> 3);
                   constrain_line(bx0 + 2, &x1, by0 + 2, &y1, width, height);
                   vp9_blit_line(bx0 + 2,  x1, by0 + 2,  y1, y_buffer, y_stride);
                   bmi++;
                 }
               }
             }
           }
         } else if (is_inter_mode(mi->mbmi.mode)) {
           MV *mv = &mi->mbmi.mv.as_mv;
           const int lx0 = x0 + 8;
           const int ly0 = y0 + 8;
           x1 = lx0 + (mv->col >> 3);
           y1 = ly0 + (mv->row >> 3);
           if (x1 != lx0 && y1 != ly0) {
             constrain_line(lx0, &x1, ly0 - 1, &y1, width, height);
             vp9_blit_line(lx0,  x1, ly0 - 1,  y1, y_buffer, y_stride);
             constrain_line(lx0, &x1, ly0 + 1, &y1, width, height);
             vp9_blit_line(lx0,  x1, ly0 + 1,  y1, y_buffer, y_stride);
           } else {
             vp9_blit_line(lx0,  x1, ly0,  y1, y_buffer, y_stride);
           }
         }
         mi++;
       }
       mi++;
     }
   }
   /* Color in block modes */
   if ((flags & VP9D_DEBUG_CLR_BLK_MODES)
       && (ppflags->display_mb_modes_flag || ppflags->display_b_modes_flag)) {
     int y, x;
     YV12_BUFFER_CONFIG *post = &cm->post_proc_buffer;
     int width  = post->y_width;
     int height = post->y_height;
     uint8_t *y_ptr = cm->post_proc_buffer.y_buffer;
     uint8_t *u_ptr = cm->post_proc_buffer.u_buffer;
     uint8_t *v_ptr = cm->post_proc_buffer.v_buffer;
     int y_stride = cm->post_proc_buffer.y_stride;
     MODE_INFO *mi = cm->mi;
     for (y = 0; y < height; y += 16) {
       for (x = 0; x < width; x += 16) {
         int Y = 0, U = 0, V = 0;
         if (mi->mbmi.mode == I4X4_PRED &&
             ((ppflags->display_mb_modes_flag & I4X4_PRED) ||
              ppflags->display_b_modes_flag)) {
           int by, bx;
           uint8_t *yl, *ul, *vl;
           union b_mode_info *bmi = mi->bmi;
           yl = y_ptr + x;
           ul = u_ptr + (x >> 1);
           vl = v_ptr + (x >> 1);
           for (by = 0; by < 16; by += 4) {
             for (bx = 0; bx < 16; bx += 4) {
               if ((ppflags->display_b_modes_flag & (1 << mi->mbmi.mode))
                   || (ppflags->display_mb_modes_flag & I4X4_PRED)) {
                 Y = B_PREDICTION_MODE_colors[bmi->as_mode][0];
                 U = B_PREDICTION_MODE_colors[bmi->as_mode][1];
                 V = B_PREDICTION_MODE_colors[bmi->as_mode][2];
                 vp9_blend_b(yl + bx, ul + (bx >> 1), vl + (bx >> 1), Y, U, V,
 xc000, y_stride);
               }
               bmi++;
             }
             yl += y_stride * 4;
             ul += y_stride * 1;
             vl += y_stride * 1;
           }
         } else if (ppflags->display_mb_modes_flag & (1 << mi->mbmi.mode)) {
           Y = MB_PREDICTION_MODE_colors[mi->mbmi.mode][0];
           U = MB_PREDICTION_MODE_colors[mi->mbmi.mode][1];
           V = MB_PREDICTION_MODE_colors[mi->mbmi.mode][2];
           vp9_blend_mb_inner(y_ptr + x, u_ptr + (x >> 1), v_ptr + (x >> 1),
                              Y, U, V, 0xc000, y_stride);
         }
         mi++;
       }
       y_ptr += y_stride * 16;
       u_ptr += y_stride * 4;
       v_ptr += y_stride * 4;
       mi++;
     }
   }
   /* Color in frame reference blocks */
   if ((flags & VP9D_DEBUG_CLR_FRM_REF_BLKS) &&
       ppflags->display_ref_frame_flag) {
     int y, x;
     YV12_BUFFER_CONFIG *post = &cm->post_proc_buffer;
     int width  = post->y_width;
     int height = post->y_height;
     uint8_t *y_ptr = cm->post_proc_buffer.y_buffer;
     uint8_t *u_ptr = cm->post_proc_buffer.u_buffer;
     uint8_t *v_ptr = cm->post_proc_buffer.v_buffer;
     int y_stride = cm->post_proc_buffer.y_stride;
     MODE_INFO *mi = cm->mi;
     for (y = 0; y < height; y += 16) {
       for (x = 0; x < width; x += 16) {
         int Y = 0, U = 0, V = 0;
         if (ppflags->display_ref_frame_flag & (1 << mi->mbmi.ref_frame)) {
           Y = MV_REFERENCE_FRAME_colors[mi->mbmi.ref_frame][0];
           U = MV_REFERENCE_FRAME_colors[mi->mbmi.ref_frame][1];
           V = MV_REFERENCE_FRAME_colors[mi->mbmi.ref_frame][2];
           vp9_blend_mb_outer(y_ptr + x, u_ptr + (x >> 1), v_ptr + (x >> 1),
                              Y, U, V, 0xc000, y_stride);
         }
         mi++;
       }
       y_ptr += y_stride * 16;
       u_ptr += y_stride * 4;
       v_ptr += y_stride * 4;
       mi++;
     }
   }
 #endif
   *dest = cm->post_proc_buffer;
   /* handle problem with extending borders */
   dest->y_width = cm->width;
   dest->y_height = cm->height;
   dest->uv_width = dest->y_width >> cm->subsampling_x;
   dest->uv_height = dest->y_height >> cm->subsampling_y;
   return 0;
 }

The Tor Browser / annotate

media/libvpx/vp9/common/vp9_postproc.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_postproc.c