Adolfo Reyna
1052 lines
36 KiB
C
1052 lines
36 KiB
C
#include <tt_app.h>
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#include <tt_lvgl.h>
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#include <tt_lvgl_toolbar.h>
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#include <tt_app_alertdialog.h>
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#include <tactility/device.h>
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#include <tactility/drivers/i2s_controller.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_log.h"
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#include "cJSON.h"
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#ifdef ESP_PLATFORM
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#include <esp_heap_caps.h>
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#endif
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#define MINIMP3_IMPLEMENTATION
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#define MINIMP3_NO_SIMD
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#include "minimp3.h"
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#define TAG "BookPlayer"
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#define MP3_INPUT_BUFFER_SIZE 16384
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#define MAX_BOOKS 32
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#define MAX_PATH 256
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#define MAX_TITLE 128
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#define MAX_AUTHOR 128
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typedef enum {
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STATE_IDLE,
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STATE_PLAYING,
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STATE_PAUSED
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} PlaybackState;
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typedef struct {
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char slug[MAX_PATH];
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char title[MAX_TITLE];
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char author[MAX_AUTHOR];
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} BookMetadata;
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typedef struct {
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struct Device* i2s_dev;
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PlaybackState state;
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int volume;
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// Book picker list data
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BookMetadata books[MAX_BOOKS];
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int book_count;
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// Currently loaded book details
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char current_book_slug[MAX_PATH];
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cJSON* manifest_root;
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cJSON* pages_array;
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int page_count;
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int current_page;
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int last_pct;
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// UI elements
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AppHandle app;
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lv_obj_t* picker_wrapper;
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lv_obj_t* lst_books;
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lv_obj_t* player_wrapper;
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lv_obj_t* header_bar;
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lv_obj_t* ctrl_bar;
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lv_obj_t* lbl_book_title;
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lv_obj_t* img_page;
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lv_obj_t* lbl_indicator;
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lv_obj_t* bar_progress;
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lv_obj_t* btn_play_pause;
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lv_obj_t* btn_prev;
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lv_obj_t* btn_next;
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// Audio State
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char current_audio_path[512];
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uint8_t* audio_buf; // Shared MP3 input and WAV buffer
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mp3d_sample_t* pcm_buf; // MP3 decoded pcm buffer
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TaskHandle_t playback_task_handle;
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} AppCtx;
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typedef struct __attribute__((packed)) {
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char riff[4]; // "RIFF"
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uint32_t overall_size; // file size - 8
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char wave[4]; // "WAVE"
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char fmt_chunk_marker[4]; // "fmt "
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uint32_t length_of_fmt; // 16 for PCM
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uint16_t format_type; // 1 for PCM
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uint16_t channels; // 1 for mono
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uint32_t sample_rate; // 16000
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uint32_t byterate; // sample_rate * channels * (bits_per_sample / 8)
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uint16_t block_align; // channels * (bits_per_sample / 8)
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uint16_t bits_per_sample; // 16
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char data_chunk_header[4]; // "data"
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uint32_t data_size; // data size in bytes
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} WavHeader;
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static AppCtx g_ctx;
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/* ─── Forward Declarations ─── */
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static void update_ui(AppCtx* ctx);
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static void wait_for_playback_task_to_exit(AppCtx* ctx);
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static void load_page(AppCtx* ctx, int page_index, bool start_audio);
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static void return_to_picker(AppCtx* ctx);
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static void audio_playback_task(void* arg);
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static void play_mp3(AppCtx* ctx);
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static void play_wav(AppCtx* ctx);
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static void scan_books(AppCtx* ctx);
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/* ─── UI Helper to update status labels & button states ─── */
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static void update_ui(AppCtx* ctx) {
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if (!ctx->btn_play_pause) return;
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lv_obj_t* lbl_play = lv_obj_get_child(ctx->btn_play_pause, 0);
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// Prev button state
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if (ctx->current_page <= 0) {
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lv_obj_add_state(ctx->btn_prev, LV_STATE_DISABLED);
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} else {
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lv_obj_clear_state(ctx->btn_prev, LV_STATE_DISABLED);
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}
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// Next button state
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if (ctx->current_page >= ctx->page_count - 1) {
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lv_obj_add_state(ctx->btn_next, LV_STATE_DISABLED);
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} else {
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lv_obj_clear_state(ctx->btn_next, LV_STATE_DISABLED);
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}
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switch (ctx->state) {
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case STATE_PLAYING:
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if (lbl_play) lv_label_set_text(lbl_play, LV_SYMBOL_PAUSE " Pause");
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break;
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case STATE_PAUSED:
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if (lbl_play) lv_label_set_text(lbl_play, LV_SYMBOL_PLAY " Play");
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break;
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case STATE_IDLE:
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default:
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if (lbl_play) lv_label_set_text(lbl_play, LV_SYMBOL_PLAY " Play");
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lv_bar_set_value(ctx->bar_progress, 0, LV_ANIM_OFF);
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break;
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}
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}
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/* ─── Read entire file to string ─── */
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static char* read_full_file(const char* filepath) {
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FILE* file = fopen(filepath, "rb");
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if (!file) {
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ESP_LOGE(TAG, "Failed to open file: %s", filepath);
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return NULL;
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}
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fseek(file, 0, SEEK_END);
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long size = ftell(file);
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if (size <= 0) {
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fclose(file);
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return NULL;
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}
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fseek(file, 0, SEEK_SET);
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char* buf = malloc(size + 1);
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if (!buf) {
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fclose(file);
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return NULL;
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}
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size_t read_bytes = fread(buf, 1, size, file);
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buf[read_bytes] = '\0';
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fclose(file);
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return buf;
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}
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/* ─── Auto-advance logic using LVGL Timer on main thread ─── */
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static void on_auto_advance_timer(lv_timer_t* timer) {
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AppCtx* ctx = (AppCtx*)lv_timer_get_user_data(timer);
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if (ctx->current_page + 1 < ctx->page_count) {
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load_page(ctx, ctx->current_page + 1, true);
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}
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}
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static void handle_audio_finished(AppCtx* ctx) {
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if (ctx->current_page + 1 < ctx->page_count) {
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// Create a one-shot timer with repeat count 1 to run on the GUI thread
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lv_timer_t* timer = lv_timer_create(on_auto_advance_timer, 0, ctx);
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lv_timer_set_repeat_count(timer, 1);
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} else {
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ctx->state = STATE_IDLE;
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update_ui(ctx);
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}
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}
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/* ─── Helper to wait for playback thread to terminate safely ─── */
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static void wait_for_playback_task_to_exit(AppCtx* ctx) {
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if (ctx->playback_task_handle != NULL) {
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ctx->state = STATE_IDLE;
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while (ctx->playback_task_handle != NULL) {
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tt_lvgl_unlock();
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vTaskDelay(pdMS_TO_TICKS(10));
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tt_lvgl_lock(portMAX_DELAY);
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}
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}
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}
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/* ─── Load Page Content (Image, Caption, Audio path) ─── */
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static void load_page(AppCtx* ctx, int page_index, bool start_audio) {
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// 1. Stop current audio if running and wait for thread to finish
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wait_for_playback_task_to_exit(ctx);
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if (page_index < 0 || page_index >= ctx->page_count) return;
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ctx->current_page = page_index;
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ctx->last_pct = -1;
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cJSON* page = cJSON_GetArrayItem(ctx->pages_array, page_index);
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if (!page) return;
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cJSON* img_item = cJSON_GetObjectItem(page, "image");
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cJSON* snd_item = cJSON_GetObjectItem(page, "audio");
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// Load Image file
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if (img_item && img_item->valuestring) {
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char img_path[512];
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snprintf(img_path, sizeof(img_path), "/sdcard/books/%s/%s", ctx->current_book_slug, img_item->valuestring);
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FILE* img_file = fopen(img_path, "rb");
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if (img_file) {
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fclose(img_file);
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char lv_img_path[1024];
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#ifdef ESP_PLATFORM
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snprintf(lv_img_path, sizeof(lv_img_path), "A:%s", img_path);
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#else
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snprintf(lv_img_path, sizeof(lv_img_path), "A:/%s", img_path);
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#endif
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lv_image_set_src(ctx->img_page, lv_img_path);
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} else {
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ESP_LOGW(TAG, "Image file not found: %s", img_path);
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lv_image_set_src(ctx->img_page, LV_SYMBOL_IMAGE); // Show default fallback icon
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}
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} else {
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lv_image_set_src(ctx->img_page, LV_SYMBOL_IMAGE);
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}
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// Update Page index indicator (e.g. "1 / 12")
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char ind_buf[32];
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snprintf(ind_buf, sizeof(ind_buf), "%d / %d", page_index + 1, ctx->page_count);
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lv_label_set_text(ctx->lbl_indicator, ind_buf);
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// Save audio path
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if (snd_item && snd_item->valuestring) {
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snprintf(ctx->current_audio_path, sizeof(ctx->current_audio_path), "/sdcard/books/%s/%s", ctx->current_book_slug, snd_item->valuestring);
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} else {
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ctx->current_audio_path[0] = '\0';
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}
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// Update UI states (like Prev/Next buttons)
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update_ui(ctx);
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// Start playback if requested and valid
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if (start_audio && ctx->current_audio_path[0] != '\0') {
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// Verify audio file exists
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FILE* audio_file = fopen(ctx->current_audio_path, "rb");
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if (audio_file) {
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fclose(audio_file);
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ctx->state = STATE_PLAYING;
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update_ui(ctx);
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xTaskCreate(audio_playback_task, "audio_play", 4096, ctx, 5, &ctx->playback_task_handle);
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} else {
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ESP_LOGE(TAG, "Audio file not found: %s", ctx->current_audio_path);
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const char* buttons[] = {"OK"};
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tt_app_alertdialog_start("Playback Error", "The narration audio file is missing.", buttons, 1);
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ctx->state = STATE_IDLE;
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update_ui(ctx);
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}
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} else {
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ctx->state = STATE_IDLE;
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update_ui(ctx);
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}
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}
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/* ─── Return to Book Picker Screen ─── */
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static void return_to_picker(AppCtx* ctx) {
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wait_for_playback_task_to_exit(ctx);
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if (ctx->manifest_root) {
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cJSON_Delete(ctx->manifest_root);
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ctx->manifest_root = NULL;
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ctx->pages_array = NULL;
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}
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lv_obj_add_flag(ctx->player_wrapper, LV_OBJ_FLAG_HIDDEN);
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lv_obj_remove_flag(ctx->picker_wrapper, LV_OBJ_FLAG_HIDDEN);
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}
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/* ─── Task Selection (MP3 or WAV) ─── */
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static void audio_playback_task(void* arg) {
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AppCtx* ctx = (AppCtx*)arg;
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size_t len = strlen(ctx->current_audio_path);
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bool is_wav = false;
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if (len > 4 && strcasecmp(ctx->current_audio_path + len - 4, ".wav") == 0) {
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is_wav = true;
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}
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if (is_wav) {
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play_wav(ctx);
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} else {
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play_mp3(ctx);
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}
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}
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/* ─── MP3 Decoder Routine ─── */
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static void play_mp3(AppCtx* ctx) {
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// Let the GUI thread load the image from SD first to avoid hardware SD card bus contention
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vTaskDelay(pdMS_TO_TICKS(400));
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FILE* file = fopen(ctx->current_audio_path, "rb");
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if (!file) {
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ESP_LOGE(TAG, "Failed to open file: %s", ctx->current_audio_path);
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tt_lvgl_lock(portMAX_DELAY);
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ctx->state = STATE_IDLE;
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update_ui(ctx);
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tt_lvgl_unlock();
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ctx->playback_task_handle = NULL;
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vTaskDelete(NULL);
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return;
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}
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fseek(file, 0, SEEK_END);
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size_t file_size = ftell(file);
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fseek(file, 0, SEEK_SET);
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size_t bytes_read_total = 0;
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#ifdef ESP_PLATFORM
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mp3dec_t* decoder = (mp3dec_t*)heap_caps_malloc(sizeof(mp3dec_t), MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
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#else
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mp3dec_t* decoder = (mp3dec_t*)malloc(sizeof(mp3dec_t));
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#endif
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if (!decoder) {
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ESP_LOGE(TAG, "Failed to allocate MP3 decoder!");
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fclose(file);
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ctx->playback_task_handle = NULL;
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vTaskDelete(NULL);
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return;
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}
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mp3dec_init(decoder);
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size_t buffered_bytes = 0;
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bool eof = false;
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int sample_rate = 0;
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int channels = 0;
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ESP_LOGI(TAG, "Starting MP3 playback: %s (%d bytes)", ctx->current_audio_path, file_size);
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while (ctx->state != STATE_IDLE) {
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if (ctx->state == STATE_PAUSED) {
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if (sample_rate != 0) {
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device_lock(ctx->i2s_dev);
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i2s_controller_reset(ctx->i2s_dev);
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device_unlock(ctx->i2s_dev);
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sample_rate = 0;
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channels = 0;
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}
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vTaskDelay(pdMS_TO_TICKS(50));
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continue;
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}
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// Fill buffer
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if (!eof && buffered_bytes < MP3_INPUT_BUFFER_SIZE) {
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size_t to_read = MP3_INPUT_BUFFER_SIZE - buffered_bytes;
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size_t read_bytes = fread(ctx->audio_buf + buffered_bytes, 1, to_read, file);
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buffered_bytes += read_bytes;
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bytes_read_total += read_bytes;
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if (read_bytes == 0) eof = true;
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}
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if (buffered_bytes == 0 && eof) {
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ESP_LOGI(TAG, "Reached MP3 EOF");
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break;
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}
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// Decode one frame
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mp3dec_frame_info_t info;
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memset(&info, 0, sizeof(info));
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int samples = mp3dec_decode_frame(decoder, ctx->audio_buf, (int)buffered_bytes, ctx->pcm_buf, &info);
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if (info.frame_bytes <= 0) {
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if (eof) break;
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// Resync
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memmove(ctx->audio_buf, ctx->audio_buf + 1, --buffered_bytes);
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continue;
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}
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size_t consumed = (size_t)info.frame_bytes;
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buffered_bytes -= consumed;
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memmove(ctx->audio_buf, ctx->audio_buf + consumed, buffered_bytes);
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if (samples > 0) {
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// Configure I2S
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if (sample_rate != info.hz || channels != info.channels) {
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struct I2sConfig config = {
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.communication_format = I2S_FORMAT_STAND_I2S,
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.sample_rate = (uint32_t)info.hz,
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.bits_per_sample = 16,
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.channel_left = 0,
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.channel_right = (info.channels == 2) ? 1 : I2S_CHANNEL_NONE
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};
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device_lock(ctx->i2s_dev);
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error_t err = i2s_controller_set_config(ctx->i2s_dev, &config);
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device_unlock(ctx->i2s_dev);
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if (err != ERROR_NONE) {
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ESP_LOGE(TAG, "Failed to configure I2S: %d", err);
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break;
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}
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sample_rate = info.hz;
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channels = info.channels;
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}
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// Adjust Volume
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int vol = ctx->volume;
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int16_t* samples_ptr = (int16_t*)ctx->pcm_buf;
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size_t sample_count = (size_t)samples * info.channels;
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for (size_t i = 0; i < sample_count; ++i) {
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int32_t scaled = (int32_t)samples_ptr[i] * vol / 100;
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samples_ptr[i] = (int16_t)scaled;
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}
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// Write PCM to I2S
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size_t offset = 0;
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size_t data_size = sample_count * sizeof(int16_t);
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bool write_err = false;
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while (offset < data_size && ctx->state == STATE_PLAYING) {
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size_t written = 0;
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error_t err = i2s_controller_write(ctx->i2s_dev, (uint8_t*)ctx->pcm_buf + offset, data_size - offset, &written, pdMS_TO_TICKS(250));
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if (err != ERROR_NONE || written == 0) {
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ESP_LOGE(TAG, "I2S write error: %d", err);
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write_err = true;
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break;
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}
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offset += written;
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}
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if (write_err) break;
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}
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// Update Progress Bar
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if (file_size > 0) {
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int pct = (int)((bytes_read_total - buffered_bytes) * 100 / file_size);
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if (pct < 0) pct = 0;
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if (pct > 100) pct = 100;
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if (pct != ctx->last_pct) {
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ctx->last_pct = pct;
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tt_lvgl_lock(portMAX_DELAY);
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lv_bar_set_value(ctx->bar_progress, pct, LV_ANIM_OFF);
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tt_lvgl_unlock();
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}
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}
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taskYIELD();
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}
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fclose(file);
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if (ctx->i2s_dev) {
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device_lock(ctx->i2s_dev);
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i2s_controller_reset(ctx->i2s_dev);
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device_unlock(ctx->i2s_dev);
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}
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bool stopped_externally = (ctx->state == STATE_IDLE);
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if (!stopped_externally) {
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tt_lvgl_lock(portMAX_DELAY);
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handle_audio_finished(ctx);
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tt_lvgl_unlock();
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}
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#ifdef ESP_PLATFORM
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heap_caps_free(decoder);
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#else
|
|
free(decoder);
|
|
#endif
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
}
|
|
|
|
/* ─── WAV Decoder Routine ─── */
|
|
static void play_wav(AppCtx* ctx) {
|
|
// Let the GUI thread load the image from SD first to avoid hardware SD card bus contention
|
|
vTaskDelay(pdMS_TO_TICKS(400));
|
|
|
|
FILE* file = fopen(ctx->current_audio_path, "rb");
|
|
if (!file) {
|
|
ESP_LOGE(TAG, "Failed to open WAV: %s", ctx->current_audio_path);
|
|
tt_lvgl_lock(portMAX_DELAY);
|
|
ctx->state = STATE_IDLE;
|
|
update_ui(ctx);
|
|
tt_lvgl_unlock();
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
return;
|
|
}
|
|
|
|
WavHeader header;
|
|
if (fread(&header, 1, sizeof(WavHeader), file) != sizeof(WavHeader)) {
|
|
ESP_LOGE(TAG, "Failed to read WAV header");
|
|
fclose(file);
|
|
tt_lvgl_lock(portMAX_DELAY);
|
|
ctx->state = STATE_IDLE;
|
|
update_ui(ctx);
|
|
tt_lvgl_unlock();
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
return;
|
|
}
|
|
|
|
if (strncmp(header.riff, "RIFF", 4) != 0 || strncmp(header.wave, "WAVE", 4) != 0) {
|
|
ESP_LOGE(TAG, "Invalid WAV signature");
|
|
fclose(file);
|
|
tt_lvgl_lock(portMAX_DELAY);
|
|
ctx->state = STATE_IDLE;
|
|
update_ui(ctx);
|
|
tt_lvgl_unlock();
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
return;
|
|
}
|
|
|
|
size_t data_size = header.data_size;
|
|
if (data_size == 0) {
|
|
fseek(file, 0, SEEK_END);
|
|
data_size = ftell(file) - sizeof(WavHeader);
|
|
fseek(file, sizeof(WavHeader), SEEK_SET);
|
|
}
|
|
|
|
struct I2sConfig config = {
|
|
.communication_format = I2S_FORMAT_STAND_I2S,
|
|
.sample_rate = header.sample_rate,
|
|
.bits_per_sample = header.bits_per_sample,
|
|
.channel_left = 0,
|
|
.channel_right = (header.channels == 2) ? 1 : I2S_CHANNEL_NONE
|
|
};
|
|
|
|
device_lock(ctx->i2s_dev);
|
|
error_t err = i2s_controller_set_config(ctx->i2s_dev, &config);
|
|
device_unlock(ctx->i2s_dev);
|
|
|
|
if (err != ERROR_NONE) {
|
|
ESP_LOGE(TAG, "Failed to configure WAV I2S: %d", err);
|
|
fclose(file);
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
return;
|
|
}
|
|
|
|
ESP_LOGI(TAG, "Starting WAV playback: %s (%u Hz, %u channels)", ctx->current_audio_path, (unsigned int)header.sample_rate, (unsigned int)header.channels);
|
|
|
|
size_t total_played = 0;
|
|
bool i2s_configured = true;
|
|
|
|
while (total_played < data_size && ctx->state != STATE_IDLE) {
|
|
if (ctx->state == STATE_PAUSED) {
|
|
if (i2s_configured) {
|
|
device_lock(ctx->i2s_dev);
|
|
i2s_controller_reset(ctx->i2s_dev);
|
|
device_unlock(ctx->i2s_dev);
|
|
i2s_configured = false;
|
|
}
|
|
vTaskDelay(pdMS_TO_TICKS(50));
|
|
continue;
|
|
}
|
|
|
|
if (!i2s_configured) {
|
|
device_lock(ctx->i2s_dev);
|
|
err = i2s_controller_set_config(ctx->i2s_dev, &config);
|
|
device_unlock(ctx->i2s_dev);
|
|
if (err != ERROR_NONE) break;
|
|
i2s_configured = true;
|
|
}
|
|
|
|
size_t to_read = (data_size - total_played < MP3_INPUT_BUFFER_SIZE) ? (data_size - total_played) : MP3_INPUT_BUFFER_SIZE;
|
|
size_t read_bytes = fread(ctx->audio_buf, 1, to_read, file);
|
|
if (read_bytes == 0) break;
|
|
|
|
// Scaling Volume
|
|
int vol = ctx->volume;
|
|
int16_t* samples_ptr = (int16_t*)ctx->audio_buf;
|
|
size_t sample_count = read_bytes / sizeof(int16_t);
|
|
for (size_t i = 0; i < sample_count; ++i) {
|
|
int32_t scaled = (int32_t)samples_ptr[i] * vol / 100;
|
|
samples_ptr[i] = (int16_t)scaled;
|
|
}
|
|
|
|
// Play to I2S
|
|
size_t offset = 0;
|
|
bool write_err = false;
|
|
while (offset < read_bytes && ctx->state == STATE_PLAYING) {
|
|
size_t written = 0;
|
|
err = i2s_controller_write(ctx->i2s_dev, ctx->audio_buf + offset, read_bytes - offset, &written, pdMS_TO_TICKS(100));
|
|
if (err != ERROR_NONE || written == 0) {
|
|
ESP_LOGE(TAG, "I2S WAV write error: %d", err);
|
|
write_err = true;
|
|
break;
|
|
}
|
|
offset += written;
|
|
}
|
|
|
|
if (write_err) break;
|
|
|
|
total_played += read_bytes;
|
|
|
|
// Update progress bar
|
|
int pct = (int)((total_played * 100) / data_size);
|
|
if (pct < 0) pct = 0;
|
|
if (pct > 100) pct = 100;
|
|
if (pct != ctx->last_pct) {
|
|
ctx->last_pct = pct;
|
|
tt_lvgl_lock(portMAX_DELAY);
|
|
lv_bar_set_value(ctx->bar_progress, pct, LV_ANIM_OFF);
|
|
tt_lvgl_unlock();
|
|
}
|
|
|
|
taskYIELD();
|
|
}
|
|
|
|
fclose(file);
|
|
|
|
if (ctx->i2s_dev) {
|
|
device_lock(ctx->i2s_dev);
|
|
i2s_controller_reset(ctx->i2s_dev);
|
|
device_unlock(ctx->i2s_dev);
|
|
}
|
|
|
|
bool stopped_externally = (ctx->state == STATE_IDLE);
|
|
|
|
if (!stopped_externally) {
|
|
tt_lvgl_lock(portMAX_DELAY);
|
|
handle_audio_finished(ctx);
|
|
tt_lvgl_unlock();
|
|
}
|
|
|
|
ctx->playback_task_handle = NULL;
|
|
vTaskDelete(NULL);
|
|
}
|
|
|
|
/* ─── Picker events ─── */
|
|
static void on_book_selected(lv_event_t* e) {
|
|
int index = (int)(intptr_t)lv_event_get_user_data(e);
|
|
AppCtx* ctx = &g_ctx;
|
|
|
|
BookMetadata* book = &ctx->books[index];
|
|
strncpy(ctx->current_book_slug, book->slug, sizeof(ctx->current_book_slug) - 1);
|
|
|
|
char manifest_path[512];
|
|
snprintf(manifest_path, sizeof(manifest_path), "/sdcard/books/%s/manifest.json", book->slug);
|
|
|
|
char* json_str = read_full_file(manifest_path);
|
|
if (!json_str) {
|
|
const char* buttons[] = {"OK"};
|
|
tt_app_alertdialog_start("Read Error", "Failed to open the book manifest.", buttons, 1);
|
|
return;
|
|
}
|
|
|
|
ctx->manifest_root = cJSON_Parse(json_str);
|
|
free(json_str);
|
|
|
|
if (!ctx->manifest_root) {
|
|
const char* buttons[] = {"OK"};
|
|
tt_app_alertdialog_start("JSON Error", "The book manifest is not formatted correctly.", buttons, 1);
|
|
return;
|
|
}
|
|
|
|
ctx->pages_array = cJSON_GetObjectItem(ctx->manifest_root, "pages");
|
|
if (!ctx->pages_array || !cJSON_IsArray(ctx->pages_array)) {
|
|
const char* buttons[] = {"OK"};
|
|
tt_app_alertdialog_start("Format Error", "No pages found in book manifest.", buttons, 1);
|
|
cJSON_Delete(ctx->manifest_root);
|
|
ctx->manifest_root = NULL;
|
|
ctx->pages_array = NULL;
|
|
return;
|
|
}
|
|
|
|
ctx->page_count = cJSON_GetArraySize(ctx->pages_array);
|
|
if (ctx->page_count <= 0) {
|
|
const char* buttons[] = {"OK"};
|
|
tt_app_alertdialog_start("Format Error", "The book does not have pages.", buttons, 1);
|
|
cJSON_Delete(ctx->manifest_root);
|
|
ctx->manifest_root = NULL;
|
|
ctx->pages_array = NULL;
|
|
return;
|
|
}
|
|
|
|
lv_label_set_text(ctx->lbl_book_title, book->title);
|
|
|
|
// Switch views
|
|
lv_obj_add_flag(ctx->picker_wrapper, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->player_wrapper, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->header_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->ctrl_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->bar_progress, LV_OBJ_FLAG_HIDDEN);
|
|
|
|
// Load first page (no auto-play initially)
|
|
load_page(ctx, 0, false);
|
|
}
|
|
|
|
/* ─── Scan Books ─── */
|
|
static void scan_books(AppCtx* ctx) {
|
|
ctx->book_count = 0;
|
|
lv_obj_clean(ctx->lst_books);
|
|
|
|
DIR* dir = opendir("/sdcard/books");
|
|
if (!dir) {
|
|
ESP_LOGE(TAG, "Failed to scan books: /sdcard/books folder missing.");
|
|
lv_list_add_text(ctx->lst_books, "No SD card or books directory found.");
|
|
return;
|
|
}
|
|
|
|
struct dirent* entry;
|
|
while ((entry = readdir(dir)) != NULL && ctx->book_count < MAX_BOOKS) {
|
|
if (entry->d_name[0] == '.') continue;
|
|
|
|
char manifest_path[512];
|
|
snprintf(manifest_path, sizeof(manifest_path), "/sdcard/books/%s/manifest.json", entry->d_name);
|
|
|
|
char* json_str = read_full_file(manifest_path);
|
|
if (json_str) {
|
|
cJSON* root = cJSON_Parse(json_str);
|
|
free(json_str);
|
|
|
|
if (root) {
|
|
cJSON* title_item = cJSON_GetObjectItem(root, "title");
|
|
cJSON* author_item = cJSON_GetObjectItem(root, "author");
|
|
|
|
BookMetadata* book = &ctx->books[ctx->book_count];
|
|
strncpy(book->slug, entry->d_name, sizeof(book->slug) - 1);
|
|
|
|
if (title_item && title_item->valuestring) {
|
|
strncpy(book->title, title_item->valuestring, sizeof(book->title) - 1);
|
|
} else {
|
|
strncpy(book->title, entry->d_name, sizeof(book->title) - 1);
|
|
}
|
|
|
|
if (author_item && author_item->valuestring) {
|
|
strncpy(book->author, author_item->valuestring, sizeof(book->author) - 1);
|
|
} else {
|
|
book->author[0] = '\0';
|
|
}
|
|
|
|
cJSON_Delete(root);
|
|
ctx->book_count++;
|
|
}
|
|
}
|
|
}
|
|
closedir(dir);
|
|
|
|
if (ctx->book_count == 0) {
|
|
lv_list_add_text(ctx->lst_books, "No book manifest.json files found.");
|
|
return;
|
|
}
|
|
|
|
// Bubble sort by title
|
|
for (int i = 0; i < ctx->book_count - 1; i++) {
|
|
for (int j = 0; j < ctx->book_count - i - 1; j++) {
|
|
if (strcmp(ctx->books[j].title, ctx->books[j + 1].title) > 0) {
|
|
BookMetadata temp = ctx->books[j];
|
|
ctx->books[j] = ctx->books[j + 1];
|
|
ctx->books[j + 1] = temp;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add items to screen list
|
|
for (int i = 0; i < ctx->book_count; ++i) {
|
|
char label_text[512];
|
|
if (ctx->books[i].author[0] != '\0') {
|
|
snprintf(label_text, sizeof(label_text), "%s\nby %s", ctx->books[i].title, ctx->books[i].author);
|
|
} else {
|
|
snprintf(label_text, sizeof(label_text), "%s", ctx->books[i].title);
|
|
}
|
|
lv_obj_t* btn = lv_list_add_button(ctx->lst_books, LV_SYMBOL_DIRECTORY, label_text);
|
|
lv_obj_add_event_cb(btn, on_book_selected, LV_EVENT_CLICKED, (void*)(intptr_t)i);
|
|
}
|
|
}
|
|
|
|
/* ─── Player Control Events ─── */
|
|
static void on_play_pause_click(lv_event_t* e) {
|
|
AppCtx* ctx = (AppCtx*)lv_event_get_user_data(e);
|
|
if (ctx->current_audio_path[0] == '\0') return;
|
|
|
|
if (ctx->state == STATE_IDLE) {
|
|
ctx->state = STATE_PLAYING;
|
|
update_ui(ctx);
|
|
xTaskCreate(audio_playback_task, "audio_play", 4096, ctx, 5, &ctx->playback_task_handle);
|
|
} else if (ctx->state == STATE_PLAYING) {
|
|
ctx->state = STATE_PAUSED;
|
|
update_ui(ctx);
|
|
} else if (ctx->state == STATE_PAUSED) {
|
|
ctx->state = STATE_PLAYING;
|
|
update_ui(ctx);
|
|
}
|
|
}
|
|
|
|
static void on_prev_click(lv_event_t* e) {
|
|
AppCtx* ctx = (AppCtx*)lv_event_get_user_data(e);
|
|
if (ctx->current_page > 0) {
|
|
bool was_playing = (ctx->state == STATE_PLAYING);
|
|
load_page(ctx, ctx->current_page - 1, was_playing);
|
|
}
|
|
}
|
|
|
|
static void on_next_click(lv_event_t* e) {
|
|
AppCtx* ctx = (AppCtx*)lv_event_get_user_data(e);
|
|
if (ctx->current_page < ctx->page_count - 1) {
|
|
bool was_playing = (ctx->state == STATE_PLAYING);
|
|
load_page(ctx, ctx->current_page + 1, was_playing);
|
|
}
|
|
}
|
|
|
|
static void on_image_click(lv_event_t* e) {
|
|
AppCtx* ctx = (AppCtx*)lv_event_get_user_data(e);
|
|
if (!ctx) return;
|
|
|
|
bool is_hidden = lv_obj_has_flag(ctx->header_bar, LV_OBJ_FLAG_HIDDEN);
|
|
if (is_hidden) {
|
|
lv_obj_remove_flag(ctx->header_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->ctrl_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_remove_flag(ctx->bar_progress, LV_OBJ_FLAG_HIDDEN);
|
|
} else {
|
|
lv_obj_add_flag(ctx->header_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_add_flag(ctx->ctrl_bar, LV_OBJ_FLAG_HIDDEN);
|
|
lv_obj_add_flag(ctx->bar_progress, LV_OBJ_FLAG_HIDDEN);
|
|
}
|
|
}
|
|
|
|
static void on_back_click(lv_event_t* e) {
|
|
AppCtx* ctx = (AppCtx*)lv_event_get_user_data(e);
|
|
return_to_picker(ctx);
|
|
}
|
|
|
|
/* ─── App Lifecycle ─── */
|
|
static void onShowApp(AppHandle app, void* data, lv_obj_t* parent) {
|
|
memset(&g_ctx, 0, sizeof(g_ctx));
|
|
g_ctx.app = app;
|
|
g_ctx.volume = 80;
|
|
|
|
// Allocate shared audio buffers
|
|
#ifdef ESP_PLATFORM
|
|
g_ctx.audio_buf = (uint8_t*)heap_caps_malloc(MP3_INPUT_BUFFER_SIZE, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
|
|
g_ctx.pcm_buf = (mp3d_sample_t*)heap_caps_malloc(MINIMP3_MAX_SAMPLES_PER_FRAME * sizeof(mp3d_sample_t), MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
|
|
#else
|
|
g_ctx.audio_buf = (uint8_t*)malloc(MP3_INPUT_BUFFER_SIZE);
|
|
g_ctx.pcm_buf = (mp3d_sample_t*)malloc(MINIMP3_MAX_SAMPLES_PER_FRAME * sizeof(mp3d_sample_t));
|
|
#endif
|
|
|
|
// Find I2S sound device
|
|
g_ctx.i2s_dev = device_find_by_name("i2s0");
|
|
if (!g_ctx.i2s_dev) {
|
|
ESP_LOGE(TAG, "I2S device 'i2s0' not found!");
|
|
}
|
|
|
|
// Create dual layouts
|
|
// 1. Picker Screen wrapper
|
|
g_ctx.picker_wrapper = lv_obj_create(parent);
|
|
lv_obj_set_size(g_ctx.picker_wrapper, LV_PCT(100), LV_PCT(100));
|
|
lv_obj_set_style_border_width(g_ctx.picker_wrapper, 0, 0);
|
|
lv_obj_set_style_pad_all(g_ctx.picker_wrapper, 0, 0);
|
|
lv_obj_set_style_pad_gap(g_ctx.picker_wrapper, 0, 0);
|
|
lv_obj_set_style_bg_color(g_ctx.picker_wrapper, lv_color_hex(0x1E1E2E), 0); // Dark background
|
|
|
|
// Toolbar in picker
|
|
lv_obj_t* toolbar = tt_lvgl_toolbar_create_for_app(g_ctx.picker_wrapper, app);
|
|
lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
|
|
|
|
// Picker list
|
|
g_ctx.lst_books = lv_list_create(g_ctx.picker_wrapper);
|
|
lv_obj_set_width(g_ctx.lst_books, LV_PCT(100));
|
|
lv_obj_align_to(g_ctx.lst_books, toolbar, LV_ALIGN_OUT_BOTTOM_MID, 0, 0);
|
|
int32_t toolbar_height = lv_obj_get_height(toolbar);
|
|
int32_t parent_height = lv_obj_get_content_height(parent);
|
|
lv_obj_set_height(g_ctx.lst_books, parent_height - toolbar_height);
|
|
lv_obj_set_style_bg_color(g_ctx.lst_books, lv_color_hex(0x1E1E2E), 0);
|
|
lv_obj_set_style_border_color(g_ctx.lst_books, lv_color_hex(0x313244), 0);
|
|
|
|
// 2. Player Screen wrapper (hidden on start)
|
|
g_ctx.player_wrapper = lv_obj_create(parent);
|
|
lv_obj_set_size(g_ctx.player_wrapper, LV_PCT(100), LV_PCT(100));
|
|
lv_obj_set_style_border_width(g_ctx.player_wrapper, 0, 0);
|
|
lv_obj_set_style_pad_all(g_ctx.player_wrapper, 0, 0);
|
|
lv_obj_set_style_pad_gap(g_ctx.player_wrapper, 0, 0);
|
|
lv_obj_set_style_bg_color(g_ctx.player_wrapper, lv_color_hex(0x1E1E2E), 0);
|
|
lv_obj_remove_flag(g_ctx.player_wrapper, LV_OBJ_FLAG_SCROLLABLE); // Lock page scrolling
|
|
lv_obj_add_flag(g_ctx.player_wrapper, LV_OBJ_FLAG_HIDDEN);
|
|
|
|
// Page Image (covers the whole screen as background)
|
|
g_ctx.img_page = lv_image_create(g_ctx.player_wrapper);
|
|
lv_obj_align(g_ctx.img_page, LV_ALIGN_CENTER, 0, 0);
|
|
lv_obj_set_style_bg_opa(g_ctx.img_page, LV_OPA_TRANSP, 0);
|
|
lv_obj_set_style_pad_all(g_ctx.img_page, 0, 0);
|
|
lv_obj_set_style_border_width(g_ctx.img_page, 0, 0);
|
|
lv_obj_remove_flag(g_ctx.img_page, LV_OBJ_FLAG_SCROLLABLE);
|
|
lv_obj_add_flag(g_ctx.img_page, LV_OBJ_FLAG_CLICKABLE);
|
|
lv_obj_add_event_cb(g_ctx.img_page, on_image_click, LV_EVENT_CLICKED, &g_ctx);
|
|
|
|
// Custom Player header (Back button, Book Title, Page Indicator)
|
|
g_ctx.header_bar = lv_obj_create(g_ctx.player_wrapper);
|
|
lv_obj_t* header_bar = g_ctx.header_bar;
|
|
lv_obj_set_size(header_bar, LV_PCT(100), 36);
|
|
lv_obj_align(header_bar, LV_ALIGN_TOP_MID, 0, 0);
|
|
lv_obj_set_style_radius(header_bar, 0, 0);
|
|
lv_obj_set_style_bg_color(header_bar, lv_color_hex(0x11111B), 0);
|
|
lv_obj_set_style_bg_opa(header_bar, LV_OPA_COVER, 0); // Solid header bar
|
|
lv_obj_set_style_border_color(header_bar, lv_color_hex(0x313244), 0);
|
|
lv_obj_set_style_border_width(header_bar, 1, LV_PART_MAIN);
|
|
lv_obj_remove_flag(header_bar, LV_OBJ_FLAG_SCROLLABLE);
|
|
|
|
// Back button
|
|
lv_obj_t* btn_back = lv_button_create(header_bar);
|
|
lv_obj_set_size(btn_back, 44, 26);
|
|
lv_obj_align(btn_back, LV_ALIGN_LEFT_MID, 0, 0);
|
|
lv_obj_set_style_radius(btn_back, 6, 0);
|
|
lv_obj_set_style_bg_color(btn_back, lv_color_hex(0x313244), 0);
|
|
lv_obj_t* lbl_back = lv_label_create(btn_back);
|
|
lv_label_set_text(lbl_back, LV_SYMBOL_LEFT);
|
|
lv_obj_center(lbl_back);
|
|
lv_obj_add_event_cb(btn_back, on_back_click, LV_EVENT_CLICKED, &g_ctx);
|
|
|
|
// Title
|
|
g_ctx.lbl_book_title = lv_label_create(header_bar);
|
|
lv_obj_align(g_ctx.lbl_book_title, LV_ALIGN_CENTER, 0, 0);
|
|
lv_obj_set_width(g_ctx.lbl_book_title, 180);
|
|
lv_obj_set_style_text_align(g_ctx.lbl_book_title, LV_TEXT_ALIGN_CENTER, 0);
|
|
lv_obj_set_style_text_color(g_ctx.lbl_book_title, lv_color_hex(0xCDD6F4), 0);
|
|
lv_label_set_long_mode(g_ctx.lbl_book_title, LV_LABEL_LONG_DOT); // Static text with dots to prevent dynamic redraw overhead
|
|
|
|
// Page Indicator
|
|
g_ctx.lbl_indicator = lv_label_create(header_bar);
|
|
lv_obj_align(g_ctx.lbl_indicator, LV_ALIGN_RIGHT_MID, 0, 0);
|
|
lv_obj_set_style_text_color(g_ctx.lbl_indicator, lv_color_hex(0xA6ADC8), 0);
|
|
lv_label_set_text(g_ctx.lbl_indicator, "1 / 1");
|
|
|
|
// Bottom Controls container (overlaying background image)
|
|
g_ctx.ctrl_bar = lv_obj_create(g_ctx.player_wrapper);
|
|
lv_obj_t* ctrl_bar = g_ctx.ctrl_bar;
|
|
lv_obj_set_size(ctrl_bar, LV_PCT(100), 40);
|
|
lv_obj_align(ctrl_bar, LV_ALIGN_BOTTOM_MID, 0, 0);
|
|
lv_obj_set_style_radius(ctrl_bar, 0, 0);
|
|
lv_obj_set_style_bg_color(ctrl_bar, lv_color_hex(0x11111B), 0);
|
|
lv_obj_set_style_bg_opa(ctrl_bar, LV_OPA_COVER, 0); // Solid control bar
|
|
lv_obj_set_style_border_width(ctrl_bar, 0, 0);
|
|
lv_obj_set_style_pad_all(ctrl_bar, 0, 0);
|
|
lv_obj_set_style_pad_gap(ctrl_bar, 0, 0);
|
|
lv_obj_set_flex_flow(ctrl_bar, LV_FLEX_FLOW_ROW);
|
|
lv_obj_set_flex_align(ctrl_bar, LV_FLEX_ALIGN_SPACE_EVENLY, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
|
|
lv_obj_remove_flag(ctrl_bar, LV_OBJ_FLAG_SCROLLABLE);
|
|
|
|
// Progress Bar (thin bar running along the top of control bar)
|
|
g_ctx.bar_progress = lv_bar_create(g_ctx.player_wrapper);
|
|
lv_obj_set_size(g_ctx.bar_progress, LV_PCT(100), 4);
|
|
lv_obj_align_to(g_ctx.bar_progress, ctrl_bar, LV_ALIGN_OUT_TOP_MID, 0, 0);
|
|
lv_bar_set_range(g_ctx.bar_progress, 0, 100);
|
|
lv_bar_set_value(g_ctx.bar_progress, 0, LV_ANIM_OFF);
|
|
lv_obj_set_style_bg_color(g_ctx.bar_progress, lv_color_hex(0x45475A), LV_PART_MAIN);
|
|
lv_obj_set_style_bg_color(g_ctx.bar_progress, lv_color_hex(0x89B4FA), LV_PART_INDICATOR);
|
|
|
|
// Prev Button
|
|
g_ctx.btn_prev = lv_button_create(ctrl_bar);
|
|
lv_obj_set_size(g_ctx.btn_prev, 54, 30);
|
|
lv_obj_set_style_radius(g_ctx.btn_prev, 15, 0);
|
|
lv_obj_set_style_bg_color(g_ctx.btn_prev, lv_color_hex(0x313244), 0);
|
|
lv_obj_t* lbl_prev = lv_label_create(g_ctx.btn_prev);
|
|
lv_label_set_text(lbl_prev, LV_SYMBOL_PREV);
|
|
lv_obj_center(lbl_prev);
|
|
lv_obj_add_event_cb(g_ctx.btn_prev, on_prev_click, LV_EVENT_CLICKED, &g_ctx);
|
|
|
|
// Play/Pause Button
|
|
g_ctx.btn_play_pause = lv_button_create(ctrl_bar);
|
|
lv_obj_set_size(g_ctx.btn_play_pause, 94, 30);
|
|
lv_obj_set_style_radius(g_ctx.btn_play_pause, 15, 0);
|
|
lv_obj_set_style_bg_color(g_ctx.btn_play_pause, lv_color_hex(0x89B4FA), 0);
|
|
lv_obj_set_style_text_color(g_ctx.btn_play_pause, lv_color_hex(0x11111B), 0);
|
|
lv_obj_t* lbl_play_btn = lv_label_create(g_ctx.btn_play_pause);
|
|
lv_label_set_text(lbl_play_btn, LV_SYMBOL_PLAY " Play");
|
|
lv_obj_center(lbl_play_btn);
|
|
lv_obj_add_event_cb(g_ctx.btn_play_pause, on_play_pause_click, LV_EVENT_CLICKED, &g_ctx);
|
|
|
|
// Next Button
|
|
g_ctx.btn_next = lv_button_create(ctrl_bar);
|
|
lv_obj_set_size(g_ctx.btn_next, 54, 30);
|
|
lv_obj_set_style_radius(g_ctx.btn_next, 15, 0);
|
|
lv_obj_set_style_bg_color(g_ctx.btn_next, lv_color_hex(0x313244), 0);
|
|
lv_obj_t* lbl_next = lv_label_create(g_ctx.btn_next);
|
|
lv_label_set_text(lbl_next, LV_SYMBOL_NEXT);
|
|
lv_obj_center(lbl_next);
|
|
lv_obj_add_event_cb(g_ctx.btn_next, on_next_click, LV_EVENT_CLICKED, &g_ctx);
|
|
|
|
// Initial load
|
|
g_ctx.state = STATE_IDLE;
|
|
update_ui(&g_ctx);
|
|
|
|
// Scan Books
|
|
scan_books(&g_ctx);
|
|
}
|
|
|
|
static void onHideApp(AppHandle app, void* data) {
|
|
wait_for_playback_task_to_exit(&g_ctx);
|
|
|
|
if (g_ctx.i2s_dev) {
|
|
device_lock(g_ctx.i2s_dev);
|
|
i2s_controller_reset(g_ctx.i2s_dev);
|
|
device_unlock(g_ctx.i2s_dev);
|
|
}
|
|
|
|
if (g_ctx.manifest_root) {
|
|
cJSON_Delete(g_ctx.manifest_root);
|
|
g_ctx.manifest_root = NULL;
|
|
g_ctx.pages_array = NULL;
|
|
}
|
|
|
|
#ifdef ESP_PLATFORM
|
|
if (g_ctx.audio_buf) {
|
|
heap_caps_free(g_ctx.audio_buf);
|
|
g_ctx.audio_buf = NULL;
|
|
}
|
|
if (g_ctx.pcm_buf) {
|
|
heap_caps_free(g_ctx.pcm_buf);
|
|
g_ctx.pcm_buf = NULL;
|
|
}
|
|
#else
|
|
if (g_ctx.audio_buf) {
|
|
free(g_ctx.audio_buf);
|
|
g_ctx.audio_buf = NULL;
|
|
}
|
|
if (g_ctx.pcm_buf) {
|
|
free(g_ctx.pcm_buf);
|
|
g_ctx.pcm_buf = NULL;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int main(int argc, char* argv[]) {
|
|
tt_app_register((AppRegistration) {
|
|
.onShow = onShowApp,
|
|
.onHide = onHideApp
|
|
});
|
|
return 0;
|
|
}
|