1 files changed, 264 insertions, 0 deletions

diff --git a/media/libvpx/libvpx/vp8/common/postproc.c b/media/libvpx/libvpx/vp8/common/postproc.c
new file mode 100644
index 0000000000..c03b16b2f5
--- /dev/null
+++ b/media/libvpx/libvpx/vp8/common/postproc.c
@@ -0,0 +1,264 @@
+/*
+ *  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 "vpx_config.h"
+#include "vpx_dsp_rtcd.h"
+#include "vp8_rtcd.h"
+#include "vpx_dsp/postproc.h"
+#include "vpx_ports/system_state.h"
+#include "vpx_scale_rtcd.h"
+#include "vpx_scale/yv12config.h"
+#include "postproc.h"
+#include "common.h"
+#include "vpx_scale/vpx_scale.h"
+#include "systemdependent.h"
+
+#include <limits.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/* clang-format off */
+#define RGB_TO_YUV(t)                                     \
+  (unsigned char)((0.257 * (float)(t >> 16)) +            \
+                  (0.504 * (float)(t >> 8 & 0xff)) +      \
+                  (0.098 * (float)(t & 0xff)) + 16),      \
+  (unsigned char)(-(0.148 * (float)(t >> 16)) -           \
+                  (0.291 * (float)(t >> 8 & 0xff)) +      \
+                  (0.439 * (float)(t & 0xff)) + 128),     \
+  (unsigned char)((0.439 * (float)(t >> 16)) -            \
+                  (0.368 * (float)(t >> 8 & 0xff)) -      \
+                  (0.071 * (float)(t & 0xff)) + 128)
+/* clang-format on */
+
+extern void vp8_blit_text(const char *msg, unsigned char *address,
+                          const int pitch);
+extern void vp8_blit_line(int x0, int x1, int y0, int y1, unsigned char *image,
+                          const int pitch);
+/***********************************************************************************************************
+ */
+#if CONFIG_POSTPROC
+static int q2mbl(int x) {
+  if (x < 20) x = 20;
+
+  x = 50 + (x - 50) * 10 / 8;
+  return x * x / 3;
+}
+
+static void vp8_de_mblock(YV12_BUFFER_CONFIG *post, int q) {
+  vpx_mbpost_proc_across_ip(post->y_buffer, post->y_stride, post->y_height,
+                            post->y_width, q2mbl(q));
+  vpx_mbpost_proc_down(post->y_buffer, post->y_stride, post->y_height,
+                       post->y_width, q2mbl(q));
+}
+
+void vp8_deblock(VP8_COMMON *cm, YV12_BUFFER_CONFIG *source,
+                 YV12_BUFFER_CONFIG *post, int q) {
+  double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
+  int ppl = (int)(level + .5);
+
+  const MODE_INFO *mode_info_context = cm->mi;
+  int mbr, mbc;
+
+  /* The pixel thresholds are adjusted according to if or not the macroblock
+   * is a skipped block.  */
+  unsigned char *ylimits = cm->pp_limits_buffer;
+  unsigned char *uvlimits = cm->pp_limits_buffer + 16 * cm->mb_cols;
+
+  if (ppl > 0) {
+    for (mbr = 0; mbr < cm->mb_rows; ++mbr) {
+      unsigned char *ylptr = ylimits;
+      unsigned char *uvlptr = uvlimits;
+      for (mbc = 0; mbc < cm->mb_cols; ++mbc) {
+        unsigned char mb_ppl;
+
+        if (mode_info_context->mbmi.mb_skip_coeff) {
+          mb_ppl = (unsigned char)ppl >> 1;
+        } else {
+          mb_ppl = (unsigned char)ppl;
+        }
+
+        memset(ylptr, mb_ppl, 16);
+        memset(uvlptr, mb_ppl, 8);
+
+        ylptr += 16;
+        uvlptr += 8;
+        mode_info_context++;
+      }
+      mode_info_context++;
+
+      vpx_post_proc_down_and_across_mb_row(
+          source->y_buffer + 16 * mbr * source->y_stride,
+          post->y_buffer + 16 * mbr * post->y_stride, source->y_stride,
+          post->y_stride, source->y_width, ylimits, 16);
+
+      vpx_post_proc_down_and_across_mb_row(
+          source->u_buffer + 8 * mbr * source->uv_stride,
+          post->u_buffer + 8 * mbr * post->uv_stride, source->uv_stride,
+          post->uv_stride, source->uv_width, uvlimits, 8);
+      vpx_post_proc_down_and_across_mb_row(
+          source->v_buffer + 8 * mbr * source->uv_stride,
+          post->v_buffer + 8 * mbr * post->uv_stride, source->uv_stride,
+          post->uv_stride, source->uv_width, uvlimits, 8);
+    }
+  } else {
+    vp8_yv12_copy_frame(source, post);
+  }
+}
+
+void vp8_de_noise(VP8_COMMON *cm, YV12_BUFFER_CONFIG *source, int q,
+                  int uvfilter) {
+  int mbr;
+  double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
+  int ppl = (int)(level + .5);
+  int mb_rows = cm->mb_rows;
+  int mb_cols = cm->mb_cols;
+  unsigned char *limits = cm->pp_limits_buffer;
+
+  memset(limits, (unsigned char)ppl, 16 * mb_cols);
+
+  /* TODO: The original code don't filter the 2 outer rows and columns. */
+  for (mbr = 0; mbr < mb_rows; ++mbr) {
+    vpx_post_proc_down_and_across_mb_row(
+        source->y_buffer + 16 * mbr * source->y_stride,
+        source->y_buffer + 16 * mbr * source->y_stride, source->y_stride,
+        source->y_stride, source->y_width, limits, 16);
+    if (uvfilter == 1) {
+      vpx_post_proc_down_and_across_mb_row(
+          source->u_buffer + 8 * mbr * source->uv_stride,
+          source->u_buffer + 8 * mbr * source->uv_stride, source->uv_stride,
+          source->uv_stride, source->uv_width, limits, 8);
+      vpx_post_proc_down_and_across_mb_row(
+          source->v_buffer + 8 * mbr * source->uv_stride,
+          source->v_buffer + 8 * mbr * source->uv_stride, source->uv_stride,
+          source->uv_stride, source->uv_width, limits, 8);
+    }
+  }
+}
+#endif  // CONFIG_POSTPROC
+
+#if CONFIG_POSTPROC
+int vp8_post_proc_frame(VP8_COMMON *oci, YV12_BUFFER_CONFIG *dest,
+                        vp8_ppflags_t *ppflags) {
+  int q = oci->filter_level * 10 / 6;
+  int flags = ppflags->post_proc_flag;
+  int deblock_level = ppflags->deblocking_level;
+  int noise_level = ppflags->noise_level;
+
+  if (!oci->frame_to_show) return -1;
+
+  if (q > 63) q = 63;
+
+  if (!flags) {
+    *dest = *oci->frame_to_show;
+
+    /* handle problem with extending borders */
+    dest->y_width = oci->Width;
+    dest->y_height = oci->Height;
+    dest->uv_height = dest->y_height / 2;
+    oci->postproc_state.last_base_qindex = oci->base_qindex;
+    oci->postproc_state.last_frame_valid = 1;
+    return 0;
+  }
+  if (flags & VP8D_ADDNOISE) {
+    if (!oci->postproc_state.generated_noise) {
+      oci->postproc_state.generated_noise = vpx_calloc(
+          oci->Width + 256, sizeof(*oci->postproc_state.generated_noise));
+      if (!oci->postproc_state.generated_noise) return 1;
+    }
+  }
+
+  /* Allocate post_proc_buffer_int if needed */
+  if ((flags & VP8D_MFQE) && !oci->post_proc_buffer_int_used) {
+    if ((flags & VP8D_DEBLOCK) || (flags & VP8D_DEMACROBLOCK)) {
+      int width = (oci->Width + 15) & ~15;
+      int height = (oci->Height + 15) & ~15;
+
+      if (vp8_yv12_alloc_frame_buffer(&oci->post_proc_buffer_int, width, height,
+                                      VP8BORDERINPIXELS)) {
+        vpx_internal_error(&oci->error, VPX_CODEC_MEM_ERROR,
+                           "Failed to allocate MFQE framebuffer");
+      }
+
+      oci->post_proc_buffer_int_used = 1;
+
+      /* insure that postproc is set to all 0's so that post proc
+       * doesn't pull random data in from edge
+       */
+      memset((&oci->post_proc_buffer_int)->buffer_alloc, 128,
+             (&oci->post_proc_buffer)->frame_size);
+    }
+  }
+
+  vpx_clear_system_state();
+
+  if ((flags & VP8D_MFQE) && oci->postproc_state.last_frame_valid &&
+      oci->current_video_frame > 10 &&
+      oci->postproc_state.last_base_qindex < 60 &&
+      oci->base_qindex - oci->postproc_state.last_base_qindex >= 20) {
+    vp8_multiframe_quality_enhance(oci);
+    if (((flags & VP8D_DEBLOCK) || (flags & VP8D_DEMACROBLOCK)) &&
+        oci->post_proc_buffer_int_used) {
+      vp8_yv12_copy_frame(&oci->post_proc_buffer, &oci->post_proc_buffer_int);
+      if (flags & VP8D_DEMACROBLOCK) {
+        vp8_deblock(oci, &oci->post_proc_buffer_int, &oci->post_proc_buffer,
+                    q + (deblock_level - 5) * 10);
+        vp8_de_mblock(&oci->post_proc_buffer, q + (deblock_level - 5) * 10);
+      } else if (flags & VP8D_DEBLOCK) {
+        vp8_deblock(oci, &oci->post_proc_buffer_int, &oci->post_proc_buffer, q);
+      }
+    }
+    /* Move partially towards the base q of the previous frame */
+    oci->postproc_state.last_base_qindex =
+        (3 * oci->postproc_state.last_base_qindex + oci->base_qindex) >> 2;
+  } else if (flags & VP8D_DEMACROBLOCK) {
+    vp8_deblock(oci, oci->frame_to_show, &oci->post_proc_buffer,
+                q + (deblock_level - 5) * 10);
+    vp8_de_mblock(&oci->post_proc_buffer, q + (deblock_level - 5) * 10);
+
+    oci->postproc_state.last_base_qindex = oci->base_qindex;
+  } else if (flags & VP8D_DEBLOCK) {
+    vp8_deblock(oci, oci->frame_to_show, &oci->post_proc_buffer, q);
+    oci->postproc_state.last_base_qindex = oci->base_qindex;
+  } else {
+    vp8_yv12_copy_frame(oci->frame_to_show, &oci->post_proc_buffer);
+    oci->postproc_state.last_base_qindex = oci->base_qindex;
+  }
+  oci->postproc_state.last_frame_valid = 1;
+
+  if (flags & VP8D_ADDNOISE) {
+    if (oci->postproc_state.last_q != q ||
+        oci->postproc_state.last_noise != noise_level) {
+      double sigma;
+      struct postproc_state *ppstate = &oci->postproc_state;
+      vpx_clear_system_state();
+      sigma = noise_level + .5 + .6 * q / 63.0;
+      ppstate->clamp =
+          vpx_setup_noise(sigma, ppstate->generated_noise, oci->Width + 256);
+      ppstate->last_q = q;
+      ppstate->last_noise = noise_level;
+    }
+
+    vpx_plane_add_noise(
+        oci->post_proc_buffer.y_buffer, oci->postproc_state.generated_noise,
+        oci->postproc_state.clamp, oci->postproc_state.clamp,
+        oci->post_proc_buffer.y_width, oci->post_proc_buffer.y_height,
+        oci->post_proc_buffer.y_stride);
+  }
+
+  *dest = oci->post_proc_buffer;
+
+  /* handle problem with extending borders */
+  dest->y_width = oci->Width;
+  dest->y_height = oci->Height;
+  dest->uv_height = dest->y_height / 2;
+  return 0;
+}
+#endif