/src/libvpx/vp8/common/postproc.c

Source
/*
 *  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>

/***********************************************************************************************************
 */
#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) {
  vpx_clear_system_state();
  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;
  vpx_clear_system_state();
  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;
  const int generated_noise_size = ALIGN_POWER_OF_TWO(oci->Width, 4) + 256;

  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_size < generated_noise_size) {
      vpx_free(oci->postproc_state.generated_noise);
      oci->postproc_state.generated_noise = vpx_calloc(
          generated_noise_size, sizeof(*oci->postproc_state.generated_noise));
      if (!oci->postproc_state.generated_noise) return 1;
      oci->postproc_state.generated_noise_size = generated_noise_size;
    }
  }

  /* 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,
                                       generated_noise_size);
      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

Coverage Report

Created: 2026-07-25 07:52

Line	Count	Source
1		/*
2		* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3		*
4		* Use of this source code is governed by a BSD-style license
5		* that can be found in the LICENSE file in the root of the source
6		* tree. An additional intellectual property rights grant can be found
7		* in the file PATENTS. All contributing project authors may
8		* be found in the AUTHORS file in the root of the source tree.
9		*/
10
11		#include "vpx_config.h"
12		#include "vpx_dsp_rtcd.h"
13		#include "vp8_rtcd.h"
14		#include "vpx_dsp/postproc.h"
15		#include "vpx_ports/system_state.h"
16		#include "vpx_scale_rtcd.h"
17		#include "vpx_scale/yv12config.h"
18		#include "postproc.h"
19		#include "common.h"
20		#include "vpx_scale/vpx_scale.h"
21		#include "systemdependent.h"
22
23		#include <limits.h>
24		#include <math.h>
25		#include <stdlib.h>
26		#include <stdio.h>
27
28		/***********************************************************************************************************
29		*/
30		#if CONFIG_POSTPROC
31	0	static int q2mbl(int x) {
32	0	if (x < 20) x = 20;
33
34	0	x = 50 + (x - 50) * 10 / 8;
35	0	return x * x / 3;
36	0	}
37
38	0	static void vp8_de_mblock(YV12_BUFFER_CONFIG *post, int q) {
39	0	vpx_mbpost_proc_across_ip(post->y_buffer, post->y_stride, post->y_height,
40	0	post->y_width, q2mbl(q));
41	0	vpx_mbpost_proc_down(post->y_buffer, post->y_stride, post->y_height,
42	0	post->y_width, q2mbl(q));
43	0	}
44
45		void vp8_deblock(VP8_COMMON cm, YV12_BUFFER_CONFIG source,
46	0	YV12_BUFFER_CONFIG *post, int q) {
47	0	vpx_clear_system_state();
48	0	double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
49	0	int ppl = (int)(level + .5);
50
51	0	const MODE_INFO *mode_info_context = cm->mi;
52	0	int mbr, mbc;
53
54		/* The pixel thresholds are adjusted according to if or not the macroblock
55		* is a skipped block. */
56	0	unsigned char *ylimits = cm->pp_limits_buffer;
57	0	unsigned char uvlimits = cm->pp_limits_buffer + 16 cm->mb_cols;
58
59	0	if (ppl > 0) {
60	0	for (mbr = 0; mbr < cm->mb_rows; ++mbr) {
61	0	unsigned char *ylptr = ylimits;
62	0	unsigned char *uvlptr = uvlimits;
63	0	for (mbc = 0; mbc < cm->mb_cols; ++mbc) {
64	0	unsigned char mb_ppl;
65
66	0	if (mode_info_context->mbmi.mb_skip_coeff) {
67	0	mb_ppl = (unsigned char)ppl >> 1;
68	0	} else {
69	0	mb_ppl = (unsigned char)ppl;
70	0	}
71
72	0	memset(ylptr, mb_ppl, 16);
73	0	memset(uvlptr, mb_ppl, 8);
74
75	0	ylptr += 16;
76	0	uvlptr += 8;
77	0	mode_info_context++;
78	0	}
79	0	mode_info_context++;
80
81	0	vpx_post_proc_down_and_across_mb_row(
82	0	source->y_buffer + 16 * mbr * source->y_stride,
83	0	post->y_buffer + 16 * mbr * post->y_stride, source->y_stride,
84	0	post->y_stride, source->y_width, ylimits, 16);
85
86	0	vpx_post_proc_down_and_across_mb_row(
87	0	source->u_buffer + 8 * mbr * source->uv_stride,
88	0	post->u_buffer + 8 * mbr * post->uv_stride, source->uv_stride,
89	0	post->uv_stride, source->uv_width, uvlimits, 8);
90	0	vpx_post_proc_down_and_across_mb_row(
91	0	source->v_buffer + 8 * mbr * source->uv_stride,
92	0	post->v_buffer + 8 * mbr * post->uv_stride, source->uv_stride,
93	0	post->uv_stride, source->uv_width, uvlimits, 8);
94	0	}
95	0	} else {
96	0	vp8_yv12_copy_frame(source, post);
97	0	}
98	0	}
99
100		void vp8_de_noise(VP8_COMMON cm, YV12_BUFFER_CONFIG source, int q,
101	0	int uvfilter) {
102	0	int mbr;
103	0	vpx_clear_system_state();
104	0	double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
105	0	int ppl = (int)(level + .5);
106	0	int mb_rows = cm->mb_rows;
107	0	int mb_cols = cm->mb_cols;
108	0	unsigned char *limits = cm->pp_limits_buffer;
109
110	0	memset(limits, (unsigned char)ppl, 16 * mb_cols);
111
112		/* TODO: The original code don't filter the 2 outer rows and columns. */
113	0	for (mbr = 0; mbr < mb_rows; ++mbr) {
114	0	vpx_post_proc_down_and_across_mb_row(
115	0	source->y_buffer + 16 * mbr * source->y_stride,
116	0	source->y_buffer + 16 * mbr * source->y_stride, source->y_stride,
117	0	source->y_stride, source->y_width, limits, 16);
118	0	if (uvfilter == 1) {
119	0	vpx_post_proc_down_and_across_mb_row(
120	0	source->u_buffer + 8 * mbr * source->uv_stride,
121	0	source->u_buffer + 8 * mbr * source->uv_stride, source->uv_stride,
122	0	source->uv_stride, source->uv_width, limits, 8);
123	0	vpx_post_proc_down_and_across_mb_row(
124	0	source->v_buffer + 8 * mbr * source->uv_stride,
125	0	source->v_buffer + 8 * mbr * source->uv_stride, source->uv_stride,
126	0	source->uv_stride, source->uv_width, limits, 8);
127	0	}
128	0	}
129	0	}
130		#endif // CONFIG_POSTPROC
131
132		#if CONFIG_POSTPROC
133		int vp8_post_proc_frame(VP8_COMMON oci, YV12_BUFFER_CONFIG dest,
134	31.3k	vp8_ppflags_t *ppflags) {
135	31.3k	int q = oci->filter_level * 10 / 6;
136	31.3k	int flags = ppflags->post_proc_flag;
137	31.3k	int deblock_level = ppflags->deblocking_level;
138	31.3k	int noise_level = ppflags->noise_level;
139	31.3k	const int generated_noise_size = ALIGN_POWER_OF_TWO(oci->Width, 4) + 256;
140
141	31.3k	if (!oci->frame_to_show) return -1;
142
143	31.3k	if (q > 63) q = 63;
144
145	31.3k	if (!flags) {
146	31.3k	dest = oci->frame_to_show;
147
148		/* handle problem with extending borders */
149	31.3k	dest->y_width = oci->Width;
150	31.3k	dest->y_height = oci->Height;
151	31.3k	dest->uv_height = dest->y_height / 2;
152	31.3k	oci->postproc_state.last_base_qindex = oci->base_qindex;
153	31.3k	oci->postproc_state.last_frame_valid = 1;
154	31.3k	return 0;
155	31.3k	}
156	0	if (flags & VP8D_ADDNOISE) {
157	0	if (!oci->postproc_state.generated_noise \|\|
158	0	oci->postproc_state.generated_noise_size < generated_noise_size) {
159	0	vpx_free(oci->postproc_state.generated_noise);
160	0	oci->postproc_state.generated_noise = vpx_calloc(
161	0	generated_noise_size, sizeof(*oci->postproc_state.generated_noise));
162	0	if (!oci->postproc_state.generated_noise) return 1;
163	0	oci->postproc_state.generated_noise_size = generated_noise_size;
164	0	}
165	0	}
166
167		/* Allocate post_proc_buffer_int if needed */
168	0	if ((flags & VP8D_MFQE) && !oci->post_proc_buffer_int_used) {
169	0	if ((flags & VP8D_DEBLOCK) \|\| (flags & VP8D_DEMACROBLOCK)) {
170	0	int width = (oci->Width + 15) & ~15;
171	0	int height = (oci->Height + 15) & ~15;
172
173	0	if (vp8_yv12_alloc_frame_buffer(&oci->post_proc_buffer_int, width, height,
174	0	VP8BORDERINPIXELS)) {
175	0	vpx_internal_error(&oci->error, VPX_CODEC_MEM_ERROR,
176	0	"Failed to allocate MFQE framebuffer");
177	0	}
178
179	0	oci->post_proc_buffer_int_used = 1;
180
181		/* insure that postproc is set to all 0's so that post proc
182		* doesn't pull random data in from edge
183		*/
184	0	memset((&oci->post_proc_buffer_int)->buffer_alloc, 128,
185	0	(&oci->post_proc_buffer)->frame_size);
186	0	}
187	0	}
188
189	0	vpx_clear_system_state();
190
191	0	if ((flags & VP8D_MFQE) && oci->postproc_state.last_frame_valid &&
192	0	oci->current_video_frame > 10 &&
193	0	oci->postproc_state.last_base_qindex < 60 &&
194	0	oci->base_qindex - oci->postproc_state.last_base_qindex >= 20) {
195	0	vp8_multiframe_quality_enhance(oci);
196	0	if (((flags & VP8D_DEBLOCK) \|\| (flags & VP8D_DEMACROBLOCK)) &&
197	0	oci->post_proc_buffer_int_used) {
198	0	vp8_yv12_copy_frame(&oci->post_proc_buffer, &oci->post_proc_buffer_int);
199	0	if (flags & VP8D_DEMACROBLOCK) {
200	0	vp8_deblock(oci, &oci->post_proc_buffer_int, &oci->post_proc_buffer,
201	0	q + (deblock_level - 5) * 10);
202	0	vp8_de_mblock(&oci->post_proc_buffer, q + (deblock_level - 5) * 10);
203	0	} else if (flags & VP8D_DEBLOCK) {
204	0	vp8_deblock(oci, &oci->post_proc_buffer_int, &oci->post_proc_buffer, q);
205	0	}
206	0	}
207		/* Move partially towards the base q of the previous frame */
208	0	oci->postproc_state.last_base_qindex =
209	0	(3 * oci->postproc_state.last_base_qindex + oci->base_qindex) >> 2;
210	0	} else if (flags & VP8D_DEMACROBLOCK) {
211	0	vp8_deblock(oci, oci->frame_to_show, &oci->post_proc_buffer,
212	0	q + (deblock_level - 5) * 10);
213	0	vp8_de_mblock(&oci->post_proc_buffer, q + (deblock_level - 5) * 10);
214
215	0	oci->postproc_state.last_base_qindex = oci->base_qindex;
216	0	} else if (flags & VP8D_DEBLOCK) {
217	0	vp8_deblock(oci, oci->frame_to_show, &oci->post_proc_buffer, q);
218	0	oci->postproc_state.last_base_qindex = oci->base_qindex;
219	0	} else {
220	0	vp8_yv12_copy_frame(oci->frame_to_show, &oci->post_proc_buffer);
221	0	oci->postproc_state.last_base_qindex = oci->base_qindex;
222	0	}
223	0	oci->postproc_state.last_frame_valid = 1;
224
225	0	if (flags & VP8D_ADDNOISE) {
226	0	if (oci->postproc_state.last_q != q \|\|
227	0	oci->postproc_state.last_noise != noise_level) {
228	0	double sigma;
229	0	struct postproc_state *ppstate = &oci->postproc_state;
230	0	vpx_clear_system_state();
231	0	sigma = noise_level + .5 + .6 * q / 63.0;
232	0	ppstate->clamp = vpx_setup_noise(sigma, ppstate->generated_noise,
233	0	generated_noise_size);
234	0	ppstate->last_q = q;
235	0	ppstate->last_noise = noise_level;
236	0	}
237
238	0	vpx_plane_add_noise(
239	0	oci->post_proc_buffer.y_buffer, oci->postproc_state.generated_noise,
240	0	oci->postproc_state.clamp, oci->postproc_state.clamp,
241	0	oci->post_proc_buffer.y_width, oci->post_proc_buffer.y_height,
242	0	oci->post_proc_buffer.y_stride);
243	0	}
244
245	0	*dest = oci->post_proc_buffer;
246
247		/* handle problem with extending borders */
248	0	dest->y_width = oci->Width;
249	0	dest->y_height = oci->Height;
250	0	dest->uv_height = dest->y_height / 2;
251	0	return 0;
252	0	}
253		#endif