#if __AVX2__
const __m256i needle = _mm256_set1_epi8(sync_char);
- const __m256i *in = (const __m256i *)aligned_start;
+ const __restrict __m256i *in = (const __m256i *)aligned_start;
if (current_frame->interleaved) {
- __m256i *out1 = (__m256i *)(current_frame->data + (current_frame->len + 1) / 2);
- __m256i *out2 = (__m256i *)(current_frame->data2 + current_frame->len / 2);
+ __restrict __m256i *out1 = (__m256i *)(current_frame->data + (current_frame->len + 1) / 2);
+ __restrict __m256i *out2 = (__m256i *)(current_frame->data2 + current_frame->len / 2);
if (current_frame->len % 2 == 1) {
swap(out1, out2);
}
- __m256i mask_lower_byte = _mm256_set1_epi16(0x00ff);
+ __m256i shuffle_cw = _mm256_set_epi8(
+ 15, 13, 11, 9, 7, 5, 3, 1, 14, 12, 10, 8, 6, 4, 2, 0,
+ 15, 13, 11, 9, 7, 5, 3, 1, 14, 12, 10, 8, 6, 4, 2, 0);
while (in < (const __m256i *)limit) {
- __m256i data1 = _mm256_load_si256(in);
- __m256i data2 = _mm256_load_si256(in + 1);
- __m256i data1_lo = _mm256_and_si256(data1, mask_lower_byte);
- __m256i data2_lo = _mm256_and_si256(data2, mask_lower_byte);
- __m256i data1_hi = _mm256_srli_epi16(data1, 8);
- __m256i data2_hi = _mm256_srli_epi16(data2, 8);
- __m256i lo = _mm256_packus_epi16(data1_lo, data2_lo);
- lo = _mm256_permute4x64_epi64(lo, 0b11011000);
- _mm256_storeu_si256(out1, lo); // Store as early as possible, even if the data isn't used.
- __m256i hi = _mm256_packus_epi16(data1_hi, data2_hi);
- hi = _mm256_permute4x64_epi64(hi, 0b11011000);
- _mm256_storeu_si256(out2, hi);
+ // Note: For brevity, comments show lanes as if they were 2x64-bit (they're actually 2x128).
+ __m256i data1 = _mm256_stream_load_si256(in); // AaBbCcDd EeFfGgHh
+ __m256i data2 = _mm256_stream_load_si256(in + 1); // IiJjKkLl MmNnOoPp
+
__m256i found1 = _mm256_cmpeq_epi8(data1, needle);
__m256i found2 = _mm256_cmpeq_epi8(data2, needle);
- if (!_mm256_testz_si256(found1, found1) ||
- !_mm256_testz_si256(found2, found2)) {
+ __m256i found = _mm256_or_si256(found1, found2);
+
+ data1 = _mm256_shuffle_epi8(data1, shuffle_cw); // ABCDabcd EFGHefgh
+ data2 = _mm256_shuffle_epi8(data2, shuffle_cw); // IJKLijkl MNOPmnop
+
+ data1 = _mm256_permute4x64_epi64(data1, 0b11011000); // ABCDEFGH abcdefgh
+ data2 = _mm256_permute4x64_epi64(data2, 0b11011000); // IJKLMNOP ijklmnop
+
+ __m256i lo = _mm256_permute2x128_si256(data1, data2, 0b00100000);
+ __m256i hi = _mm256_permute2x128_si256(data1, data2, 0b00110001);
+
+ _mm256_storeu_si256(out1, lo); // Store as early as possible, even if the data isn't used.
+ _mm256_storeu_si256(out2, hi);
+
+ if (!_mm256_testz_si256(found, found)) {
break;
}
printf(" interface %d\n", interface_number);
const libusb_interface *interface = &config->interface[interface_number];
for (int altsetting = 0; altsetting < interface->num_altsetting; ++altsetting) {
- printf(" alternate setting %d\n", altsetting);
const libusb_interface_descriptor *interface_desc = &interface->altsetting[altsetting];
+ printf(" alternate setting %d\n", interface_desc->bAlternateSetting);
for (int endpoint_number = 0; endpoint_number < interface_desc->bNumEndpoints; ++endpoint_number) {
const libusb_endpoint_descriptor *endpoint = &interface_desc->endpoint[endpoint_number];
printf(" endpoint address 0x%02x\n", endpoint->bEndpointAddress);
//
// so only first 16 bits count, and 0x0100 is a mask for ok/stable signal?
//
+ // Bottom 16 bits of this register seem to be firmware version number (possibly not all all of them).
+ //
// 28 and 32 seems to be analog audio input levels (one byte for each of the eight channels).
// however, if setting 32 with HDMI embedded audio, it is immediately overwritten back (to 0xe137002a).
//
// 36 can be set to 0 with no apparent effect (all of this tested on both video and audio),
// but the driver sets it to 0x8036802a at some point.
//
+ // all of this is on request 214/215. other requests (192, 219,
+ // 222, 223, 224) are used for firmware upgrade. Probably best to
+ // stay out of it unless you know what you're doing.
+ //
+ //
// register 16:
// first byte is 0x39 for a stable 576p60 signal, 0x2d for a stable 720p60 signal, 0x20 for no signal
//
static const ctrl ctrls[] = {
{ LIBUSB_ENDPOINT_IN, 214, 16, 0 },
{ LIBUSB_ENDPOINT_IN, 214, 0, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 0, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 4, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 16, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 20, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 24, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 28, 0 },
- { LIBUSB_ENDPOINT_IN, 215, 32, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 36, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 216, 44, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 48, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 52, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 24, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 24, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 }, // packet 354
- { LIBUSB_ENDPOINT_IN, 214, 24, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 12, 0 },
- { LIBUSB_ENDPOINT_IN, 214, 40, 0 },
- // more...
- //{ LIBUSB_ENDPOINT_OUT, 215, 0, 0x80000100 },
- //{ LIBUSB_ENDPOINT_OUT, 215, 0, 0x09000000 }, // wow, some kind of mode
// seems to capture on HDMI, clearing the 0x20000000 bit seems to activate 10-bit
// capture (v210).
// 0x3c000000 = composite video? (analog audio)
// 0x3e000000 = s-video? (analog audio)
{ LIBUSB_ENDPOINT_OUT, 215, 0, 0x29000000 },
+ //{ LIBUSB_ENDPOINT_OUT, 215, 0, 0x80000100 },
//{ LIBUSB_ENDPOINT_OUT, 215, 0, 0x09000000 },
-
- //{ LIBUSB_ENDPOINT_OUT, 215, 28, 0xffffffff },
- //{ LIBUSB_ENDPOINT_OUT, 215, 32, 0xffffffff },
- //{ LIBUSB_ENDPOINT_OUT, 215, 28, 0x40404040 },
- //{ LIBUSB_ENDPOINT_OUT, 215, 32, 0x40404040 },
- //{ LIBUSB_ENDPOINT_OUT, 215, 36, 0x8036802a },
{ LIBUSB_ENDPOINT_OUT, 215, 24, 0x73c60001 }, // latch for frame start?
- //{ LIBUSB_ENDPOINT_OUT, 215, 24, 0x13370001 }, // latch for frame start?
{ LIBUSB_ENDPOINT_IN, 214, 24, 0 }, //
- //{ LIBUSB_ENDPOINT_OUT, 215, 4, 0x00000000 }, // appears to have no e fect
- //{ LIBUSB_ENDPOINT_OUT, 215, 8, 0x00000000 }, // appears to have no effect
- //{ LIBUSB_ENDPOINT_OUT, 215, 20, 0x00000000 }, // appears to have no effect
- //{ LIBUSB_ENDPOINT_OUT, 215, 28, 0x00000000 }, // appears to have no effect
- //{ LIBUSB_ENDPOINT_OUT, 215, 32, 0x00000000 }, // appears to have no effect
- //{ LIBUSB_ENDPOINT_OUT, 215, 36, 0x00000000 }, // appears to have no effect
-#if 0
- { LIBUSB_ENDPOINT_OUT, 215, 0 },
- { LIBUSB_ENDPOINT_OUT, 215, 0 },
- { LIBUSB_ENDPOINT_OUT, 215, 28 },
- { LIBUSB_ENDPOINT_OUT, 215, 32 },
- { LIBUSB_ENDPOINT_OUT, 215, 36 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 0 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
- { LIBUSB_ENDPOINT_OUT, 215, 24 },
-#endif
};
for (unsigned req = 0; req < sizeof(ctrls) / sizeof(ctrls[0]); ++req) {
projects / bmusb / blobdiff