status_t AudioConverter::safeConvert(const sp<MediaCodecBuffer> &src, sp<MediaCodecBuffer> &tgt) {
if (mTo == kAudioEncodingPcm8bit && mFrom == kAudioEncodingPcm16bit) {
memcpy_to_u8_from_i16((uint8_t*)tgt->base(), (const int16_t*)src->data(), src->size() / 2);
} else if (mTo == kAudioEncodingPcm8bit && mFrom == kAudioEncodingPcmFloat) {
memcpy_to_u8_from_float((uint8_t*)tgt->base(), (const float*)src->data(), src->size() / 4);
} else if (mTo == kAudioEncodingPcm16bit && mFrom == kAudioEncodingPcm8bit) {
memcpy_to_i16_from_u8((int16_t*)tgt->base(), (const uint8_t*)src->data(), src->size());
} else if (mTo == kAudioEncodingPcm16bit && mFrom == kAudioEncodingPcmFloat) {
memcpy_to_i16_from_float((int16_t*)tgt->base(), (const float*)src->data(), src->size() / 4);
} else if (mTo == kAudioEncodingPcmFloat && mFrom == kAudioEncodingPcm8bit) {
memcpy_to_float_from_u8((float*)tgt->base(), (const uint8_t*)src->data(), src->size());
} else if (mTo == kAudioEncodingPcmFloat && mFrom == kAudioEncodingPcm16bit) {
memcpy_to_float_from_i16((float*)tgt->base(), (const int16_t*)src->data(), src->size() / 2);
} else {
return INVALID_OPERATION;
}
return OK;
}
void memcpy_by_audio_format(void *dst, audio_format_t dst_format,
const void *src, audio_format_t src_format, size_t count)
{
/* default cases for error falls through to fatal log below. */
if (dst_format == src_format) {
switch (dst_format) {
case AUDIO_FORMAT_PCM_16_BIT:
case AUDIO_FORMAT_PCM_FLOAT:
case AUDIO_FORMAT_PCM_8_BIT:
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
case AUDIO_FORMAT_PCM_32_BIT:
case AUDIO_FORMAT_PCM_8_24_BIT:
memcpy(dst, src, count * audio_bytes_per_sample(dst_format));
return;
default:
break;
}
}
switch (dst_format) {
case AUDIO_FORMAT_PCM_16_BIT:
switch (src_format) {
case AUDIO_FORMAT_PCM_FLOAT:
memcpy_to_i16_from_float((int16_t*)dst, (float*)src, count);
return;
case AUDIO_FORMAT_PCM_8_BIT:
memcpy_to_i16_from_u8((int16_t*)dst, (uint8_t*)src, count);
return;
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
memcpy_to_i16_from_p24((int16_t*)dst, (uint8_t*)src, count);
return;
case AUDIO_FORMAT_PCM_32_BIT:
memcpy_to_i16_from_i32((int16_t*)dst, (int32_t*)src, count);
return;
case AUDIO_FORMAT_PCM_8_24_BIT:
memcpy_to_i16_from_q8_23((int16_t*)dst, (int32_t*)src, count);
return;
default:
break;
}
break;
case AUDIO_FORMAT_PCM_FLOAT:
switch (src_format) {
case AUDIO_FORMAT_PCM_16_BIT:
memcpy_to_float_from_i16((float*)dst, (int16_t*)src, count);
return;
case AUDIO_FORMAT_PCM_8_BIT:
memcpy_to_float_from_u8((float*)dst, (uint8_t*)src, count);
return;
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
memcpy_to_float_from_p24((float*)dst, (uint8_t*)src, count);
return;
case AUDIO_FORMAT_PCM_32_BIT:
memcpy_to_float_from_i32((float*)dst, (int32_t*)src, count);
return;
case AUDIO_FORMAT_PCM_8_24_BIT:
memcpy_to_float_from_q8_23((float*)dst, (int32_t*)src, count);
return;
default:
break;
}
break;
case AUDIO_FORMAT_PCM_8_BIT:
switch (src_format) {
case AUDIO_FORMAT_PCM_16_BIT:
memcpy_to_u8_from_i16((uint8_t*)dst, (int16_t*)src, count);
return;
case AUDIO_FORMAT_PCM_FLOAT:
memcpy_to_u8_from_float((uint8_t*)dst, (float*)src, count);
return;
default:
break;
}
break;
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
switch (src_format) {
case AUDIO_FORMAT_PCM_16_BIT:
memcpy_to_p24_from_i16((uint8_t*)dst, (int16_t*)src, count);
return;
case AUDIO_FORMAT_PCM_FLOAT:
memcpy_to_p24_from_float((uint8_t*)dst, (float*)src, count);
return;
default:
break;
}
break;
case AUDIO_FORMAT_PCM_32_BIT:
switch (src_format) {
case AUDIO_FORMAT_PCM_16_BIT:
memcpy_to_i32_from_i16((int32_t*)dst, (int16_t*)src, count);
return;
case AUDIO_FORMAT_PCM_FLOAT:
memcpy_to_i32_from_float((int32_t*)dst, (float*)src, count);
return;
default:
break;
}
break;
case AUDIO_FORMAT_PCM_8_24_BIT:
switch (src_format) {
case AUDIO_FORMAT_PCM_16_BIT:
memcpy_to_q8_23_from_i16((int32_t*)dst, (int16_t*)src, count);
return;
case AUDIO_FORMAT_PCM_FLOAT:
memcpy_to_q8_23_from_float_with_clamp((int32_t*)dst, (float*)src, count);
return;
case AUDIO_FORMAT_PCM_24_BIT_PACKED: {
memcpy_to_q8_23_from_p24((int32_t *)dst, (uint8_t *)src, count);
return;
}
default:
break;
}
break;
default:
break;
}
LOG_ALWAYS_FATAL("invalid src format %#x for dst format %#x",
src_format, dst_format);
}
