if ((err = snd_pcm_set_params(audio_handle, SND_PCM_FORMAT_S16_LE, SND_PCM_ACCESS_RW_INTERLEAVED, 2, 44100, 1, sound.playback_us)) < 0) { printf("E: Failed to prepare PCM: %s\n", snd_strerror(err)); return -1; }
snd_pcm_hw_params_malloc( ) 在栈中分配 snd_pcm_hw_params_t 结构的空间,然后使用 snd_pcm_hw_params_any( ) 函数用声卡的全配置空间参数初始化已经分配的 snd_pcm_hw_params_t 结构。snd_pcm_hw_params_set_access ( ) 设置访问类型,常用访问类型的宏定义有: SND_PCM_ACCESS_RW_INTERLEAVED 交错访问。
2. 检查可能导致 snd_pcm_readi 返回-5 的常见原因 无效的 PCM 设备句柄:如果传递给 snd_pcm_readi 的PCM 设备句柄无效或未正确初始化,可能会导致此错误。 错误的缓冲区大小:如果传递给 snd_pcm_readi 的缓冲区大小不正确(例如,太小或太大),也可能导致此错误。 错误的音频参数:如果音频参数(如采样率、通...
int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t * params, snd_pcm_access_t access ); 参数access指定设备的访问类型,是一个snd_pcm_access_t类型常量,通常将访问类型设置为SND_PCM_ACCESS_RW_INTERLEAVED,交错访问模式,通过snd_pcm_readi/snd_pcm_writei对PCM设备进行读/写操...
hwspec = snd_pcm_hwspec_malloc(sizeof(snd_pcm_hwspec_t)); if (!hwspec) { printf("Failed to allocate hardware specification structure.\n"); return -1; } // 设置采样率约束为44100 Hz snd_pcm_hwspec_set_access(hwspec, SND_PCM_ACCESS_RW_INTERLEAVED); snd_pcm_hwspec_set_format(hwsp...
[ 1101.923524] 2028000.sai-tlv320aic3x-hifi: ASoC: soc_pcm_hw_params() failed (-22) aplay: set_params:1297: Unable to install hw params: ACCESS: RW_INTERLEAVED FORMAT: S32_LE SUBFORMAT: STD SAMPLE_BITS: 32 FRAME_BITS: 64 CHANNELS: 2 ...
SND_PCM_ACCESS_RW_INTERLEAVED, 1, RATE,1,0) <0) ERR("Error setting audio device options"); if((frames =snd_pcm_writei(dev, data, size) <0)) frames =snd_pcm_recover(dev, frames,0); if(frames <0) ERR("Error writing to the sound device"); ...
snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED); snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE); snd_pcm_hw_params_set_channels(handle, params, 1); snd_pcm_hw_params_set_rate_near(handle, params, 44100, 0); snd_pcm_hw_params(han...
问将snd_pcm_sw_params_set_stop_threshold设置为边界，但仍在snd_pcm_writei上运行不足EN腾讯数码讯...
pcm_hw_params_any(pcm->handle, hwparams); snd_pcm_hw_params_set_access(pcm->handle, hwparams,SND_PCM_ACCESS_RW_INTERLEAVED); snd_pcm_format_t format; get_bits_per_sample(wav, &format); snd_pcm_hw_params_set_format(pcm->handle, hwparams, format); pcm->format = format; snd_pcm_...