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- /*
- * 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, 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);
- 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;
- (void)low_var_thresh;
- (void)flag;
- 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,
- YV12_BUFFER_CONFIG *post, int q, int low_var_thresh, int flag,
- 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;
- (void)post;
- (void)low_var_thresh;
- (void)flag;
- 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, 1, 0);
- 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,
- 1, 0);
- }
- }
- /* 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, 1, 0);
- 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, 1, 0);
- 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
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