first

2025-10-29 13:10:02 +08:00
commit 49a07fa419
2284 changed files with 642060 additions and 0 deletions
--- a/cpu/br28/audio_anc_fade_ctr.c
+++ b/cpu/br28/audio_anc_fade_ctr.c
@ -0,0 +1,138 @@
+#include "audio_anc_fade_ctr.h"
+#include "anc.h"
+#include "audio_anc.h"
+
+/*
+ ****************************************************************
+ *							AUDIO ANC
+ * File  : audio_anc_fade_ctr.c
+ * By    : Junhao
+ * Notes : ANC fade gain管理，支持多场景并行使用
+ *
+ ****************************************************************
+ */
+
+#if 0
+#define anc_fade_log	printf
+#else
+#define anc_fade_log(...)
+#endif/*log_en*/
+
+//默认淡入增益，dB换算公式 fade_gain = 10^(dB/20) * 16384;
+#define AUDIO_ANC_FADE_GAIN_DEFAULT		16384	//(0dB)
+
+struct anc_fade_context {
+    struct list_head entry;
+    enum anc_fade_mode_t mode;
+    u8 ch;
+    u16 fade_gain;
+};
+
+static LIST_HEAD(anc_fade_head);
+
+static OS_MUTEX fade_mutex;
+
+static void anc_fade_ctr_list_del(enum anc_fade_mode_t mode)
+{
+    struct anc_fade_context *ctx;
+    if (list_empty(&anc_fade_head)) {
+        return;
+    }
+    list_for_each_entry(ctx, &anc_fade_head, entry) {
+        if (!strcmp(ctx->mode, mode)) {
+            goto __fade_del;
+        }
+    }
+    return;
+__fade_del:
+    list_del(&ctx->entry);
+    free(ctx);
+}
+
+static void anc_fade_ctr_list_add(enum anc_fade_mode_t mode, u8 ch, u16 gain)
+{
+    struct anc_fade_context *new_ctx = malloc(sizeof(struct anc_fade_context));
+    new_ctx->mode = mode;
+    //通道检测，有些芯片 fade_gain 不区分通道
+    new_ctx->ch = anc_fade_ctr_ch_check(ch);
+    new_ctx->fade_gain = gain;
+    list_add_tail(&new_ctx->entry, &anc_fade_head);
+}
+
+static int anc_fade_ctr_update(enum anc_fade_mode_t mode, u8 ch, u16 gain)
+{
+    struct anc_fade_context *ctx;
+    if (list_empty(&anc_fade_head)) {
+        return 1;
+    }
+    list_for_each_entry(ctx, &anc_fade_head, entry) {
+        if (ctx->mode == mode) {
+            if (ctx->ch != ch) {
+                printf("ERR!!!anc_fade_gain mode&ch is no \"one to one\" \n");
+            }
+            ctx->fade_gain = gain;
+            return 0;
+        }
+    }
+    return 1;
+}
+
+void audio_anc_fade_ctr_init(void)
+{
+    os_mutex_create(&fade_mutex);
+}
+
+void audio_anc_fade_ctr_set(enum anc_fade_mode_t mode, u8 ch, u16 gain)
+{
+    os_mutex_pend(&fade_mutex, 0);
+    u16 lff_gain, lfb_gain, rff_gain, rfb_gain;
+    struct anc_fade_context *ctx;
+    u8 fade_en = anc_api_get_fade_en();
+    /* anc_fade_log("fade in mode %d, gain %d\n", mode, gain); */
+
+    lff_gain = AUDIO_ANC_FADE_GAIN_DEFAULT;
+    lfb_gain = AUDIO_ANC_FADE_GAIN_DEFAULT;
+    rff_gain = AUDIO_ANC_FADE_GAIN_DEFAULT;
+    rfb_gain = AUDIO_ANC_FADE_GAIN_DEFAULT;
+
+    if (gain == AUDIO_ANC_FADE_GAIN_DEFAULT) {
+        anc_fade_ctr_list_del(mode);					//删除
+    } else {
+        if (anc_fade_ctr_update(mode, ch, gain)) {		//更新
+            anc_fade_ctr_list_add(mode, ch, gain);		//新增
+        }
+    }
+
+    //遍历链表
+    if (!list_empty(&anc_fade_head)) {
+        list_for_each_entry(ctx, &anc_fade_head, entry) {
+            /* anc_fade_log("fade list : mode %d, gain %d\n", ctx->mode, ctx->fade_gain); */
+            if ((ctx->ch & AUDIO_ANC_FADE_CH_LFF) && (ctx->fade_gain < lff_gain)) {
+                lff_gain = ctx->fade_gain;
+            }
+            if ((ctx->ch & AUDIO_ANC_FADE_CH_LFB) && (ctx->fade_gain < lfb_gain)) {
+                lfb_gain = ctx->fade_gain;
+            }
+            if ((ctx->ch & AUDIO_ANC_FADE_CH_RFF) && (ctx->fade_gain < rff_gain)) {
+                rff_gain = ctx->fade_gain;
+            }
+            if ((ctx->ch & AUDIO_ANC_FADE_CH_RFB) && (ctx->fade_gain < rfb_gain)) {
+                rfb_gain = ctx->fade_gain;
+            }
+        }
+    }
+    anc_fade_log("fade lff %d, lfb %d, rff %d, rfb %d\n", lff_gain, lfb_gain, rff_gain, rfb_gain);
+    audio_anc_fade_cfg_set(fade_en, 1, 0);
+    audio_anc_fade(AUDIO_ANC_FADE_CH_LFF, lff_gain);
+    audio_anc_fade(AUDIO_ANC_FADE_CH_LFB, lfb_gain);
+    audio_anc_fade(AUDIO_ANC_FADE_CH_RFF, rff_gain);
+    audio_anc_fade(AUDIO_ANC_FADE_CH_RFB, rfb_gain);
+    os_mutex_post(&fade_mutex);
+}
+
+void audio_anc_fade_ctr_del(enum anc_fade_mode_t mode)
+{
+    audio_anc_fade_ctr_set(mode, 0, AUDIO_ANC_FADE_GAIN_DEFAULT);
+}
+
+