mirror of
https://github.com/gtxaspec/wz_mini_hacks.git
synced 2024-12-23 12:43:35 +00:00
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
#define _GNU_SOURCE
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#include <dlfcn.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <tinyalsa/pcm.h>
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struct frames_st {
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void *buf;
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size_t length;
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};
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typedef int (* framecb)(struct frames_st *);
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static uint32_t (*real_local_sdk_audio_set_pcm_frame_callback)(int ch, void *callback);
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static void *audio_pcm_cb = NULL;
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static int AudioCaptureEnable = 1;
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static uint32_t audio_pcm_capture(struct frames_st *frames) {
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static struct pcm *pcm = NULL;
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static int firstEntry = 0;
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uint32_t *buf = frames->buf;
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if(!firstEntry) {
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firstEntry++;
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unsigned int card = 0;
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unsigned int device = 1;
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int flags = PCM_OUT | PCM_MMAP;
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const struct pcm_config config = {
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.channels = 1,
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.rate = 16000,
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.format = PCM_FORMAT_S16_LE,
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.period_size = 1024,
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.period_count = 4,
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.start_threshold = 320,
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.silence_threshold = 0,
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.silence_size = 0,
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.stop_threshold = 320 * 4
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};
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pcm = pcm_open(card, device, flags, &config);
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if(pcm == NULL) {
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fprintf(stderr, "failed to allocate memory for PCM\n");
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} else if(!pcm_is_ready(pcm)) {
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pcm_close(pcm);
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fprintf(stderr, "failed to open PCM\n");
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}
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}
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if(pcm && AudioCaptureEnable) {
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int avail = pcm_mmap_avail(pcm);
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int delay = pcm_get_delay(pcm);
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int ready = pcm_is_ready(pcm);
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int err = pcm_writei(pcm, buf, pcm_bytes_to_frames(pcm, frames->length));
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if(err < 0) fprintf(stderr, "pcm_writei err=%d\n", err);
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}
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return ((framecb)audio_pcm_cb)(frames);
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}
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uint32_t local_sdk_audio_set_pcm_frame_callback(int ch, void *callback) {
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fprintf(stderr, "local_sdk_audio_set_pcm_frame_callback streamChId=%d, callback=0x%x\n", ch, callback);
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if(ch == 0) {
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audio_pcm_cb = callback;
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fprintf(stderr,"enc func injection save audio_pcm_cb=0x%x\n", audio_pcm_cb);
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callback = audio_pcm_capture;
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}
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return real_local_sdk_audio_set_pcm_frame_callback(ch, callback);
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}
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static void __attribute ((constructor)) audio_callback_init(void) {
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real_local_sdk_audio_set_pcm_frame_callback = dlsym(dlopen("/system/lib/liblocalsdk.so", RTLD_LAZY), "local_sdk_audio_set_pcm_frame_callback");
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}
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