wz_mini_hacks/libcallback_wz_mod/audio_play.c
Alfonso Gamboa 26af3aa7bc rtsp fixes
2022-05-07 01:23:49 -07:00

108 lines
3.1 KiB
C

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
extern void local_sdk_speaker_set_pa_mode(int mode);
extern void local_sdk_speaker_clean_buf_data();
extern void local_sdk_speaker_set_volume(int volume);
extern int local_sdk_speaker_feed_pcm_data(unsigned char *buf, int size);
extern void local_sdk_speaker_finish_buf_data();
extern void CommandResponse(int fd, const char *res);
static pthread_mutex_t AudioPlayMutex = PTHREAD_MUTEX_INITIALIZER;
static int AudioPlayFd = -1;
static char waveFile[256];
static int Volume = 0;
int PlayPCM(char *file, int vol) {
static const int waveHeaderLength = 44;
static const int bufLength = 640;
unsigned char buf[bufLength];
const unsigned char cmp[] = {
0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20,
0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00, 0x80, 0x3e, 0x00, 0x00,
0x02, 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61
};
fprintf(stderr, "[command] aplay: file:%s\n", file);
FILE *fp = fopen(file, "rb");
if(fp == NULL) {
fprintf(stderr, "[command] aplay err: fopen %s failed!\n", file);
return -1;
} else {
size_t size = fread(buf, 1, waveHeaderLength, fp);
if(size != waveHeaderLength) {
fprintf(stderr, "[command] aplay err: header size error\n");
}
buf[4] = buf[5] = buf[6] = buf[7] = 0;
if(memcmp(buf, cmp, waveHeaderLength - 4)) {
fprintf(stderr, "[command] aplay err: header error\n");
}
local_sdk_speaker_clean_buf_data();
local_sdk_speaker_set_volume(vol);
local_sdk_speaker_set_pa_mode(3);
while(!feof(fp)) {
size = fread(buf, 1, bufLength, fp);
if (size <= 0) break;
while(local_sdk_speaker_feed_pcm_data(buf, size)) usleep(100 * 1000);
}
fclose(fp);
usleep(2 * 1000 * 1000);
local_sdk_speaker_finish_buf_data();
local_sdk_speaker_set_volume(0);
local_sdk_speaker_set_pa_mode(0);
}
fprintf(stderr, "[command] aplay: finish\n");
return 0;
}
static void *AudioPlayThread() {
while(1) {
pthread_mutex_lock(&AudioPlayMutex);
if(AudioPlayFd >= 0) {
int res = PlayPCM(waveFile, Volume);
CommandResponse(AudioPlayFd, res ? "error" : "ok");
}
AudioPlayFd = -1;
}
}
char *AudioPlay(int fd, char *tokenPtr) {
if(AudioPlayFd >= 0) {
fprintf(stderr, "[command] aplay err: Previous file is still playing. %d %d\n", AudioPlayFd, fd);
return "error";
}
char *p = strtok_r(NULL, " \t\r\n", &tokenPtr);
if(!p) {
fprintf(stderr, "[command] aplay err: usage : aplay <wave file> [<volume>]\n");
return "error";
}
strncpy(waveFile, p, 255);
p = strtok_r(NULL, " \t\r\n", &tokenPtr);
Volume = 40;
if(p) Volume = atoi(p);
AudioPlayFd = fd;
pthread_mutex_unlock(&AudioPlayMutex);
return NULL;
}
static void __attribute ((constructor)) AudioPlayInit(void) {
pthread_mutex_lock(&AudioPlayMutex);
pthread_t thread;
if(pthread_create(&thread, NULL, AudioPlayThread, NULL)) {
fprintf(stderr, "pthread_create error\n");
pthread_mutex_unlock(&AudioPlayMutex);
return;
}
}