summaryrefslogtreecommitdiffstats
path: root/third_party/aom/aom_dsp/grain_table.c
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/aom/aom_dsp/grain_table.c')
-rw-r--r--third_party/aom/aom_dsp/grain_table.c333
1 files changed, 333 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/grain_table.c b/third_party/aom/aom_dsp/grain_table.c
new file mode 100644
index 000000000..0d6a73f55
--- /dev/null
+++ b/third_party/aom/aom_dsp/grain_table.c
@@ -0,0 +1,333 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+/*!\file
+ * \brief This file has the implementation details of the grain table.
+ *
+ * The file format is an ascii representation for readability and
+ * editability. Array parameters are separated from the non-array
+ * parameters and prefixed with a few characters to make for easy
+ * localization with a parameter set. Each entry is prefixed with "E"
+ * and the other parameters are only specified if "update-parms" is
+ * non-zero.
+ *
+ * filmgrn1
+ * E <start-time> <end-time> <apply-grain> <random-seed> <update-parms>
+ * p <ar_coeff_lag> <ar_coeff_shift> <grain_scale_shift> ...
+ * sY <num_y_points> <point_0_x> <point_0_y> ...
+ * sCb <num_cb_points> <point_0_x> <point_0_y> ...
+ * sCr <num_cr_points> <point_0_x> <point_0_y> ...
+ * cY <ar_coeff_y_0> ....
+ * cCb <ar_coeff_cb_0> ....
+ * cCr <ar_coeff_cr_0> ....
+ * E <start-time> ...
+ */
+#include <string.h>
+#include <stdio.h>
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/grain_table.h"
+#include "aom_mem/aom_mem.h"
+
+static const char kFileMagic[8] = "filmgrn1";
+
+static void grain_table_entry_read(FILE *file,
+ struct aom_internal_error_info *error_info,
+ aom_film_grain_table_entry_t *entry) {
+ aom_film_grain_t *pars = &entry->params;
+ int num_read =
+ fscanf(file, "E %" PRId64 " %" PRId64 " %d %hd %d\n", &entry->start_time,
+ &entry->end_time, &pars->apply_grain, &pars->random_seed,
+ &pars->update_parameters);
+ if (num_read == 0 && feof(file)) return;
+ if (num_read != 5) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read entry header. Read %d != 5", num_read);
+ return;
+ }
+ if (pars->update_parameters) {
+ num_read = fscanf(file, "p %d %d %d %d %d %d %d %d %d %d %d %d\n",
+ &pars->ar_coeff_lag, &pars->ar_coeff_shift,
+ &pars->grain_scale_shift, &pars->scaling_shift,
+ &pars->chroma_scaling_from_luma, &pars->overlap_flag,
+ &pars->cb_mult, &pars->cb_luma_mult, &pars->cb_offset,
+ &pars->cr_mult, &pars->cr_luma_mult, &pars->cr_offset);
+ if (num_read != 12) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read entry params. Read %d != 12",
+ num_read);
+ return;
+ }
+ if (!fscanf(file, "\tsY %d ", &pars->num_y_points)) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read num y points");
+ return;
+ }
+ for (int i = 0; i < pars->num_y_points; ++i) {
+ if (2 != fscanf(file, "%d %d", &pars->scaling_points_y[i][0],
+ &pars->scaling_points_y[i][1])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read y scaling points");
+ return;
+ }
+ }
+ if (!fscanf(file, "\n\tsCb %d", &pars->num_cb_points)) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read num cb points");
+ return;
+ }
+ for (int i = 0; i < pars->num_cb_points; ++i) {
+ if (2 != fscanf(file, "%d %d", &pars->scaling_points_cb[i][0],
+ &pars->scaling_points_cb[i][1])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read cb scaling points");
+ return;
+ }
+ }
+ if (!fscanf(file, "\n\tsCr %d", &pars->num_cr_points)) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read num cr points");
+ return;
+ }
+ for (int i = 0; i < pars->num_cr_points; ++i) {
+ if (2 != fscanf(file, "%d %d", &pars->scaling_points_cr[i][0],
+ &pars->scaling_points_cr[i][1])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read cr scaling points");
+ return;
+ }
+ }
+
+ fscanf(file, "\n\tcY");
+ const int n = 2 * pars->ar_coeff_lag * (pars->ar_coeff_lag + 1);
+ for (int i = 0; i < n; ++i) {
+ if (1 != fscanf(file, "%d", &pars->ar_coeffs_y[i])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read Y coeffs");
+ return;
+ }
+ }
+ fscanf(file, "\n\tcCb");
+ for (int i = 0; i <= n; ++i) {
+ if (1 != fscanf(file, "%d", &pars->ar_coeffs_cb[i])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read Cb coeffs");
+ return;
+ }
+ }
+ fscanf(file, "\n\tcCr");
+ for (int i = 0; i <= n; ++i) {
+ if (1 != fscanf(file, "%d", &pars->ar_coeffs_cr[i])) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read Cr coeffs");
+ return;
+ }
+ }
+ fscanf(file, "\n");
+ }
+}
+
+void grain_table_entry_write(FILE *file, aom_film_grain_table_entry_t *entry) {
+ const aom_film_grain_t *pars = &entry->params;
+ fprintf(file, "E %" PRId64 " %" PRId64 " %d %d %d\n", entry->start_time,
+ entry->end_time, pars->apply_grain, pars->random_seed,
+ pars->update_parameters);
+ if (pars->update_parameters) {
+ fprintf(file, "\tp %d %d %d %d %d %d %d %d %d %d %d %d\n",
+ pars->ar_coeff_lag, pars->ar_coeff_shift, pars->grain_scale_shift,
+ pars->scaling_shift, pars->chroma_scaling_from_luma,
+ pars->overlap_flag, pars->cb_mult, pars->cb_luma_mult,
+ pars->cb_offset, pars->cr_mult, pars->cr_luma_mult,
+ pars->cr_offset);
+ fprintf(file, "\tsY %d ", pars->num_y_points);
+ for (int i = 0; i < pars->num_y_points; ++i) {
+ fprintf(file, " %d %d", pars->scaling_points_y[i][0],
+ pars->scaling_points_y[i][1]);
+ }
+ fprintf(file, "\n\tsCb %d", pars->num_cb_points);
+ for (int i = 0; i < pars->num_cb_points; ++i) {
+ fprintf(file, " %d %d", pars->scaling_points_cb[i][0],
+ pars->scaling_points_cb[i][1]);
+ }
+ fprintf(file, "\n\tsCr %d", pars->num_cr_points);
+ for (int i = 0; i < pars->num_cr_points; ++i) {
+ fprintf(file, " %d %d", pars->scaling_points_cr[i][0],
+ pars->scaling_points_cr[i][1]);
+ }
+ fprintf(file, "\n\tcY");
+ const int n = 2 * pars->ar_coeff_lag * (pars->ar_coeff_lag + 1);
+ for (int i = 0; i < n; ++i) {
+ fprintf(file, " %d", pars->ar_coeffs_y[i]);
+ }
+ fprintf(file, "\n\tcCb");
+ for (int i = 0; i <= n; ++i) {
+ fprintf(file, " %d", pars->ar_coeffs_cb[i]);
+ }
+ fprintf(file, "\n\tcCr");
+ for (int i = 0; i <= n; ++i) {
+ fprintf(file, " %d", pars->ar_coeffs_cr[i]);
+ }
+ fprintf(file, "\n");
+ }
+}
+
+void aom_film_grain_table_append(aom_film_grain_table_t *t, int64_t time_stamp,
+ int64_t end_time,
+ const aom_film_grain_t *grain) {
+ if (!t->tail || memcmp(grain, &t->tail->params, sizeof(*grain))) {
+ aom_film_grain_table_entry_t *new_tail = aom_malloc(sizeof(*new_tail));
+ memset(new_tail, 0, sizeof(*new_tail));
+ if (t->tail) t->tail->next = new_tail;
+ if (!t->head) t->head = new_tail;
+ t->tail = new_tail;
+
+ new_tail->start_time = time_stamp;
+ new_tail->end_time = end_time;
+ new_tail->params = *grain;
+ } else {
+ t->tail->end_time = AOMMAX(t->tail->end_time, end_time);
+ t->tail->start_time = AOMMIN(t->tail->start_time, time_stamp);
+ }
+}
+
+int aom_film_grain_table_lookup(aom_film_grain_table_t *t, int64_t time_stamp,
+ int64_t end_time, int erase,
+ aom_film_grain_t *grain) {
+ aom_film_grain_table_entry_t *entry = t->head;
+ aom_film_grain_table_entry_t *prev_entry = 0;
+ int16_t random_seed = grain ? grain->random_seed : 0;
+ if (grain) memset(grain, 0, sizeof(*grain));
+
+ while (entry) {
+ aom_film_grain_table_entry_t *next = entry->next;
+ if (time_stamp >= entry->start_time && time_stamp < entry->end_time) {
+ if (grain) {
+ *grain = entry->params;
+ if (time_stamp != 0) grain->random_seed = random_seed;
+ }
+ if (!erase) return 1;
+
+ const int64_t entry_end_time = entry->end_time;
+ if (time_stamp <= entry->start_time && end_time >= entry->end_time) {
+ if (t->tail == entry) t->tail = prev_entry;
+ if (prev_entry) {
+ prev_entry->next = entry->next;
+ } else {
+ t->head = entry->next;
+ }
+ aom_free(entry);
+ } else if (time_stamp <= entry->start_time &&
+ end_time < entry->end_time) {
+ entry->start_time = end_time;
+ } else if (time_stamp > entry->start_time &&
+ end_time >= entry->end_time) {
+ entry->end_time = time_stamp;
+ } else {
+ aom_film_grain_table_entry_t *new_entry =
+ aom_malloc(sizeof(*new_entry));
+ new_entry->next = entry->next;
+ new_entry->start_time = end_time;
+ new_entry->end_time = entry->end_time;
+ new_entry->params = entry->params;
+ entry->next = new_entry;
+ entry->end_time = time_stamp;
+ if (t->tail == entry) t->tail = new_entry;
+ }
+ // If segments aren't aligned, delete from the beggining of subsequent
+ // segments
+ if (end_time > entry_end_time) {
+ aom_film_grain_table_lookup(t, entry->end_time, end_time, 1, 0);
+ }
+ return 1;
+ }
+ prev_entry = entry;
+ entry = next;
+ }
+ return 0;
+}
+
+aom_codec_err_t aom_film_grain_table_read(
+ aom_film_grain_table_t *t, const char *filename,
+ struct aom_internal_error_info *error_info) {
+ FILE *file = fopen(filename, "rb");
+ if (!file) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR, "Unable to open %s",
+ filename);
+ return error_info->error_code;
+ }
+ error_info->error_code = AOM_CODEC_OK;
+
+ // Read in one extra character as there should be white space after
+ // the header.
+ char magic[9];
+ if (!fread(magic, 9, 1, file) || memcmp(magic, kFileMagic, 8)) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to read (or invalid) file magic");
+ fclose(file);
+ return error_info->error_code;
+ }
+
+ aom_film_grain_table_entry_t *prev_entry = 0;
+ while (!feof(file)) {
+ aom_film_grain_table_entry_t *entry = aom_malloc(sizeof(*entry));
+ memset(entry, 0, sizeof(*entry));
+ grain_table_entry_read(file, error_info, entry);
+ entry->next = 0;
+
+ if (prev_entry) prev_entry->next = entry;
+ if (!t->head) t->head = entry;
+ t->tail = entry;
+ prev_entry = entry;
+
+ if (error_info->error_code != AOM_CODEC_OK) break;
+ }
+
+ fclose(file);
+ return error_info->error_code;
+}
+
+aom_codec_err_t aom_film_grain_table_write(
+ const aom_film_grain_table_t *t, const char *filename,
+ struct aom_internal_error_info *error_info) {
+ error_info->error_code = AOM_CODEC_OK;
+
+ FILE *file = fopen(filename, "wb");
+ if (!file) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR, "Unable to open file %s",
+ filename);
+ return error_info->error_code;
+ }
+
+ if (!fwrite(kFileMagic, 8, 1, file)) {
+ aom_internal_error(error_info, AOM_CODEC_ERROR,
+ "Unable to write file magic");
+ fclose(file);
+ return error_info->error_code;
+ }
+
+ fprintf(file, "\n");
+ aom_film_grain_table_entry_t *entry = t->head;
+ while (entry) {
+ grain_table_entry_write(file, entry);
+ entry = entry->next;
+ }
+ fclose(file);
+ return error_info->error_code;
+}
+
+void aom_film_grain_table_free(aom_film_grain_table_t *t) {
+ aom_film_grain_table_entry_t *entry = t->head;
+ while (entry) {
+ aom_film_grain_table_entry_t *next = entry->next;
+ aom_free(entry);
+ entry = next;
+ }
+ memset(t, 0, sizeof(*t));
+}