#include "bmusb.h"
using namespace std;
-
-static int current_register = 0;
-
-#define NUM_REGISTERS 60
-uint8_t register_file[NUM_REGISTERS];
+using namespace std::placeholders;
#define WIDTH 1280
#define HEIGHT 750 /* 30 lines ancillary data? */
FILE *audiofp;
-FrameAllocator::Frame current_video_frame;
-FrameAllocator::Frame current_audio_frame;
-
-struct QueuedFrame {
- uint16_t timecode;
- uint16_t format;
- FrameAllocator::Frame frame;
-};
-
-mutex queue_lock;
-condition_variable queues_not_empty;
-deque<QueuedFrame> pending_video_frames;
-deque<QueuedFrame> pending_audio_frames;
-
-thread usb_thread;
-atomic<bool> should_quit;
-
FrameAllocator::~FrameAllocator() {}
#define NUM_QUEUED_FRAMES 8
freelist.push(unique_ptr<uint8_t[]>(frame.data));
}
-FrameAllocator *video_frame_allocator = nullptr;
-FrameAllocator *audio_frame_allocator = nullptr;
-frame_callback_t frame_callback = nullptr;
-
bool uint16_less_than_with_wraparound(uint16_t a, uint16_t b)
{
if (a == b) {
}
}
-void queue_frame(uint16_t format, uint16_t timecode, FrameAllocator::Frame frame, deque<QueuedFrame> *q)
+void BMUSBCapture::queue_frame(uint16_t format, uint16_t timecode, FrameAllocator::Frame frame, deque<QueuedFrame> *q)
{
if (!q->empty() && !uint16_less_than_with_wraparound(q->back().timecode, timecode)) {
printf("Blocks going backwards: prev=0x%04x, cur=0x%04x (dropped)\n",
fwrite(audio_start + AUDIO_HEADER_SIZE, 1, audio_len - AUDIO_HEADER_SIZE, audiofp);
}
-void dequeue_thread()
+void BMUSBCapture::dequeue_thread()
{
for ( ;; ) {
unique_lock<mutex> lock(queue_lock);
- queues_not_empty.wait(lock, []{ return !pending_video_frames.empty() && !pending_audio_frames.empty(); });
+ queues_not_empty.wait(lock, [this]{ return !pending_video_frames.empty() && !pending_audio_frames.empty(); });
uint16_t video_timecode = pending_video_frames.front().timecode;
uint16_t audio_timecode = pending_audio_frames.front().timecode;
}
}
-void start_new_frame(const uint8_t *start)
+void BMUSBCapture::start_new_frame(const uint8_t *start)
{
uint16_t format = (start[3] << 8) | start[2];
uint16_t timecode = (start[1] << 8) | start[0];
//}
}
-void start_new_audio_block(const uint8_t *start)
+void BMUSBCapture::start_new_audio_block(const uint8_t *start)
{
uint16_t format = (start[3] << 8) | start[2];
uint16_t timecode = (start[1] << 8) | start[0];
}
}
-static void cb_xfr(struct libusb_transfer *xfr)
+void BMUSBCapture::cb_xfr(struct libusb_transfer *xfr)
{
if (xfr->status != LIBUSB_TRANSFER_COMPLETED) {
fprintf(stderr, "transfer status %d\n", xfr->status);
exit(3);
}
+ assert(xfr->user_data != nullptr);
+ BMUSBCapture *usb = static_cast<BMUSBCapture *>(xfr->user_data);
+
if (xfr->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS) {
if (xfr->endpoint == 0x84) {
- decode_packs(xfr, "DeckLinkAudioResyncT", 20, ¤t_audio_frame, "audio", start_new_audio_block);
+ decode_packs(xfr, "DeckLinkAudioResyncT", 20, &usb->current_audio_frame, "audio", bind(&BMUSBCapture::start_new_audio_block, usb, _1));
} else {
- decode_packs(xfr, "\x00\x00\xff\xff", 4, ¤t_video_frame, "video", start_new_frame);
+ decode_packs(xfr, "\x00\x00\xff\xff", 4, &usb->current_video_frame, "video", bind(&BMUSBCapture::start_new_frame, usb, _1));
}
}
if (xfr->type == LIBUSB_TRANSFER_TYPE_CONTROL) {
setup->wIndex, buf[0], buf[1], buf[2], buf[3]);
}
#else
- memcpy(register_file + current_register, buf, 4);
- current_register = (current_register + 4) % NUM_REGISTERS;
- if (current_register == 0) {
+ memcpy(usb->register_file + usb->current_register, buf, 4);
+ usb->current_register = (usb->current_register + 4) % NUM_BMUSB_REGISTERS;
+ if (usb->current_register == 0) {
// read through all of them
printf("register dump:");
- for (int i = 0; i < NUM_REGISTERS; i += 4) {
- printf(" 0x%02x%02x%02x%02x", register_file[i], register_file[i + 1], register_file[i + 2], register_file[i + 3]);
+ for (int i = 0; i < NUM_BMUSB_REGISTERS; i += 4) {
+ printf(" 0x%02x%02x%02x%02x", usb->register_file[i], usb->register_file[i + 1], usb->register_file[i + 2], usb->register_file[i + 3]);
}
printf("\n");
}
libusb_fill_control_setup(xfr->buffer,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, /*request=*/214, /*value=*/0,
- /*index=*/current_register, /*length=*/4);
+ /*index=*/usb->current_register, /*length=*/4);
#endif
}
}
}
-void usb_thread_func()
+void BMUSBCapture::usb_thread_func()
{
printf("usb thread started\n");
}
}
-FrameAllocator *get_video_frame_allocator()
-{
- return video_frame_allocator;
-}
-
-void set_video_frame_allocator(FrameAllocator *allocator)
-{
- video_frame_allocator = allocator;
-}
-
-FrameAllocator *get_audio_frame_allocator()
-{
- return audio_frame_allocator;
-}
-
-void set_audio_frame_allocator(FrameAllocator *allocator)
-{
- audio_frame_allocator = allocator;
-}
-
-void set_frame_callback(frame_callback_t callback)
-{
- frame_callback = callback;
-}
-
-void start_bm_capture()
+void BMUSBCapture::start_bm_capture()
{
if (video_frame_allocator == nullptr) {
set_video_frame_allocator(new MallocFrameAllocator(FRAME_SIZE)); // FIXME: leak.
if (audio_frame_allocator == nullptr) {
set_audio_frame_allocator(new MallocFrameAllocator(65536)); // FIXME: leak.
}
- thread(dequeue_thread).detach();
+ thread(&BMUSBCapture::dequeue_thread, this).detach();
int rc;
struct libusb_transfer *xfr;
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
//
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, /*request=*/214, /*value=*/0,
/*index=*/44, /*length=*/4);
libusb_fill_control_transfer(xfr, devh, cmdbuf, cb_xfr, &completed, 0);
+ xfr->user_data = this;
libusb_submit_transfer(xfr);
// set up an asynchronous transfer of register 24
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, /*request=*/214, /*value=*/0,
/*index=*/24, /*length=*/4);
libusb_fill_control_transfer(xfr, devh, cmdbuf2, cb_xfr, &completed2, 0);
+ xfr->user_data = this;
libusb_submit_transfer(xfr);
#endif
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, /*request=*/214, /*value=*/0,
/*index=*/current_register, /*length=*/4);
libusb_fill_control_transfer(xfr, devh, cmdbuf3, cb_xfr, &completed3, 0);
+ xfr->user_data = this;
//libusb_submit_transfer(xfr);
audiofp = fopen("audio.raw", "wb");
libusb_fill_iso_transfer(xfr, devh, ep, buf, num_bytes,
num_iso_pack, cb_xfr, nullptr, 0);
libusb_set_iso_packet_lengths(xfr, size);
+ xfr->user_data = this;
iso_xfrs.push_back(xfr);
}
}
}
}
- usb_thread = thread(usb_thread_func);
+ should_quit = false;
+ usb_thread = thread(&BMUSBCapture::usb_thread_func, this);
#if 0
#endif
}
-void stop_bm_capture()
+void BMUSBCapture::stop_bm_capture()
{
should_quit = true;
usb_thread.join();
projects / bmusb / blobdiff