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_quantizer(int min_q, int max_q,
75 struct WarningList *warning_list) {
76 const int lossless = min_q == 0 && max_q == 0;
77 if (!lossless && (min_q == max_q || abs(max_q - min_q) < 8))
78 add_warning(quantizer_warning_string, warning_list);
81 void check_encoder_config(int disable_prompt,
82 const struct VpxEncoderConfig *global_config,
83 struct vpx_codec_enc_cfg *stream_config) {
85 struct WarningListNode *warning = NULL;
86 struct WarningList warning_list = {0};
88 check_quantizer(stream_config->rc_min_quantizer,
89 stream_config->rc_max_quantizer,
92 if (global_config->deadline == VPX_DL_REALTIME)
93 stream_config->g_lag_in_frames = 0;
95 /* Count and print warnings. */
96 for (warning = warning_list.warning_node;
98 warning = warning->next_warning,
100 warn(warning->warning_string);
103 free_warning_list(&warning_list);
106 if (!disable_prompt && !continue_prompt(num_warnings))