2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
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.
11 #include "./warnings.h"
18 #include "vpx/vpx_encoder.h"
20 #include "./tools_common.h"
23 static const char quantizer_warning_string[] =
24 "Bad quantizer values. Quantizer values should not be equal, and should "
25 "differ by at least 8.";
26 static const char lag_in_frames_with_realtime[] =
27 "Lag in frames is ignored when deadline is set to realtime.";
29 struct WarningListNode {
30 const char *warning_string;
31 struct WarningListNode *next_warning;
35 struct WarningListNode *warning_node;
38 static void add_warning(const char *warning_string,
39 struct WarningList *warning_list) {
40 struct WarningListNode **node = &warning_list->warning_node;
42 struct WarningListNode *new_node = malloc(sizeof(*new_node));
43 if (new_node == NULL) {
44 fatal("Unable to allocate warning node.");
47 new_node->warning_string = warning_string;
48 new_node->next_warning = NULL;
51 node = &(*node)->next_warning;
56 static void free_warning_list(struct WarningList *warning_list) {
57 struct WarningListNode *node = warning_list->warning_node;
58 while (warning_list->warning_node != NULL) {
59 node = warning_list->warning_node->next_warning;
60 free(warning_list->warning_node);
61 warning_list->warning_node = node;
65 static int continue_prompt(int num_warnings) {
68 "%d encoder configuration warning(s). Continue? (y to continue) ",
74 static void check_lag_in_frames_realtime_deadline(
77 struct WarningList *warning_list) {
78 if (deadline == VPX_DL_REALTIME && lag_in_frames != 0)
79 add_warning(lag_in_frames_with_realtime, warning_list);
82 static void check_quantizer(int min_q, int max_q,
83 struct WarningList *warning_list) {
84 const int lossless = min_q == 0 && max_q == 0;
85 if (!lossless && (min_q == max_q || abs(max_q - min_q) < 8))
86 add_warning(quantizer_warning_string, warning_list);
89 void check_encoder_config(int disable_prompt,
90 const struct VpxEncoderConfig *global_config,
91 const struct vpx_codec_enc_cfg *stream_config) {
93 struct WarningListNode *warning = NULL;
94 struct WarningList warning_list = {0};
96 check_quantizer(stream_config->rc_min_quantizer,
97 stream_config->rc_max_quantizer,
99 check_lag_in_frames_realtime_deadline(stream_config->g_lag_in_frames,
100 global_config->deadline,
103 /* Count and print warnings. */
104 for (warning = warning_list.warning_node;
106 warning = warning->next_warning,
108 warn(warning->warning_string);
111 free_warning_list(&warning_list);
114 if (!disable_prompt && !continue_prompt(num_warnings))