--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
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+
+ Finally, any free program is threatened constantly by software
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+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
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+If distribution of executable or object code is made by offering
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+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
--- /dev/null
+// Intensity Shuttle USB3 prototype capture driver, v0.3
+// Can download 8-bit and 10-bit UYVY/v210 frames from HDMI, quite stable
+// (can do captures for hours at a time with no drops), except during startup
+// 576p60/720p60/1080i60 works, 1080p60 does not work (firmware limitation)
+// Audio comes out as 8-channel 24-bit raw audio.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <libusb.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <algorithm>
+#include <functional>
+#include <memory>
+#include <deque>
+#include <utility>
+#include <mutex>
+#include <condition_variable>
+#include <thread>
+#include <stack>
+#include "bmusb.h"
+
+using namespace std;
+
+static int current_register = 0;
+
+#define NUM_REGISTERS 60
+uint8_t register_file[NUM_REGISTERS];
+
+#define WIDTH 1280
+#define HEIGHT 750 /* 30 lines ancillary data? */
+//#define WIDTH 1920
+//#define HEIGHT 1125 /* ??? lines ancillary data? */
+#define HEADER_SIZE 44
+//#define HEADER_SIZE 0
+#define AUDIO_HEADER_SIZE 4
+
+//#define FRAME_SIZE (WIDTH * HEIGHT * 2 + HEADER_SIZE) // UYVY
+//#define FRAME_SIZE (WIDTH * HEIGHT * 2 * 4 / 3 + HEADER_SIZE) // v210
+#define FRAME_SIZE (8 << 20)
+
+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;
+
+FrameAllocator::~FrameAllocator() {}
+
+#define NUM_QUEUED_FRAMES 8
+class MallocFrameAllocator : public FrameAllocator {
+public:
+ MallocFrameAllocator(size_t frame_size);
+ Frame alloc_frame() override;
+ void release_frame(Frame frame) override;
+
+private:
+ size_t frame_size;
+
+ mutex freelist_mutex;
+ stack<unique_ptr<uint8_t[]>> freelist; // All of size <frame_size>.
+};
+
+MallocFrameAllocator::MallocFrameAllocator(size_t frame_size)
+ : frame_size(frame_size)
+{
+ for (int i = 0; i < NUM_QUEUED_FRAMES; ++i) {
+ freelist.push(unique_ptr<uint8_t[]>(new uint8_t[frame_size]));
+ }
+}
+
+FrameAllocator::Frame MallocFrameAllocator::alloc_frame()
+{
+ Frame vf;
+ vf.owner = this;
+
+ unique_lock<mutex> lock(freelist_mutex); // Meh.
+ if (freelist.empty()) {
+ printf("Frame overrun (no more spare frames of size %ld), dropping frame!\n",
+ frame_size);
+ } else {
+ vf.data = freelist.top().release();
+ vf.size = frame_size;
+ freelist.pop(); // Meh.
+ }
+ return vf;
+}
+
+void MallocFrameAllocator::release_frame(Frame frame)
+{
+ unique_lock<mutex> lock(freelist_mutex);
+ 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) {
+ return false;
+ } else if (a < b) {
+ return (b - a < 0x8000);
+ } else {
+ int wrap_b = 0x10000 + int(b);
+ return (wrap_b - a < 0x8000);
+ }
+}
+
+void 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",
+ q->back().timecode, timecode);
+ frame.owner->release_frame(frame);
+ return;
+ }
+
+ QueuedFrame qf;
+ qf.format = format;
+ qf.timecode = timecode;
+ qf.frame = frame;
+
+ {
+ unique_lock<mutex> lock(queue_lock);
+ q->push_back(move(qf));
+ }
+ queues_not_empty.notify_one(); // might be spurious
+}
+
+void dump_frame(const char *filename, uint8_t *frame_start, size_t frame_len)
+{
+ FILE *fp = fopen(filename, "wb");
+ if (fwrite(frame_start + HEADER_SIZE, frame_len - HEADER_SIZE, 1, fp) != 1) {
+ printf("short write!\n");
+ }
+ fclose(fp);
+}
+
+void dump_audio_block(uint8_t *audio_start, size_t audio_len)
+{
+ fwrite(audio_start + AUDIO_HEADER_SIZE, 1, audio_len - AUDIO_HEADER_SIZE, audiofp);
+}
+
+void dequeue_thread()
+{
+ for ( ;; ) {
+ unique_lock<mutex> lock(queue_lock);
+ queues_not_empty.wait(lock, []{ 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;
+ if (video_timecode < audio_timecode) {
+ printf("Video block 0x%04x without corresponding audio block, dropping.\n",
+ video_timecode);
+ video_frame_allocator->release_frame(pending_video_frames.front().frame);
+ pending_video_frames.pop_front();
+ } else if (audio_timecode < video_timecode) {
+ printf("Audio block 0x%04x without corresponding video block, dropping.\n",
+ audio_timecode);
+ audio_frame_allocator->release_frame(pending_audio_frames.front().frame);
+ pending_audio_frames.pop_front();
+ } else {
+ QueuedFrame video_frame = pending_video_frames.front();
+ QueuedFrame audio_frame = pending_audio_frames.front();
+ pending_audio_frames.pop_front();
+ pending_video_frames.pop_front();
+ lock.unlock();
+
+#if 0
+ char filename[255];
+ snprintf(filename, sizeof(filename), "%04x%04x.uyvy", video_frame.format, video_timecode);
+ dump_frame(filename, video_frame.frame.data, video_frame.data_len);
+ dump_audio_block(audio_frame.frame.data, audio_frame.data_len);
+#endif
+
+ frame_callback(video_timecode,
+ video_frame.frame, HEADER_SIZE, video_frame.format,
+ audio_frame.frame, AUDIO_HEADER_SIZE, audio_frame.format);
+ }
+ }
+}
+
+void add_current_frame(const uint8_t *start, const uint8_t *end)
+{
+ if (current_video_frame.data == nullptr ||
+ current_video_frame.len > current_video_frame.size) return;
+ if (start == end) return;
+
+ int bytes = end - start;
+ if (current_video_frame.len + bytes > current_video_frame.size) {
+ printf("%d bytes overflow after last video frame\n", current_video_frame.len + bytes - current_video_frame.size);
+ //dump_frame();
+ } else {
+ memcpy(current_video_frame.data + current_video_frame.len, start, bytes);
+ current_video_frame.len += bytes;
+ }
+}
+
+void start_new_frame(const uint8_t *start)
+{
+ uint16_t format = (start[3] << 8) | start[2];
+ uint16_t timecode = (start[1] << 8) | start[0];
+
+ if (current_video_frame.len > 0) {
+ //dump_frame();
+ queue_frame(format, timecode, current_video_frame, &pending_video_frames);
+ }
+ //printf("Found frame start, format 0x%04x timecode 0x%04x, previous frame length was %d/%d\n",
+ // format, timecode,
+ // //start[7], start[6], start[5], start[4],
+ // read_current_frame, FRAME_SIZE);
+
+ current_video_frame = video_frame_allocator->alloc_frame();
+ //if (current_video_frame.data == nullptr) {
+ // read_current_frame = -1;
+ //} else {
+ // read_current_frame = 0;
+ //}
+}
+
+void add_current_audio(const uint8_t *start, const uint8_t *end)
+{
+ if (current_audio_frame.data == nullptr ||
+ current_audio_frame.len > current_audio_frame.size) return;
+ if (start == end) return;
+
+ int bytes = end - start;
+ if (current_audio_frame.len + bytes > current_audio_frame.size) {
+ printf("%d bytes overflow after last audio block\n", current_audio_frame.len + bytes - current_audio_frame.size);
+ //dump_audio_block();
+ } else {
+ memcpy(current_audio_frame.data + current_audio_frame.len, start, bytes);
+ current_audio_frame.len += bytes;
+ }
+}
+
+void start_new_audio_block(const uint8_t *start)
+{
+ uint16_t format = (start[3] << 8) | start[2];
+ uint16_t timecode = (start[1] << 8) | start[0];
+ if (current_audio_frame.len > 0) {
+ //dump_audio_block();
+ queue_frame(format, timecode, current_audio_frame, &pending_audio_frames);
+ }
+ //printf("Found audio block start, format 0x%04x timecode 0x%04x, previous block length was %d\n",
+ // format, timecode, read_current_audio_block);
+ current_audio_frame = audio_frame_allocator->alloc_frame();
+}
+
+static void dump_pack(const libusb_transfer *xfr, int offset, const libusb_iso_packet_descriptor *pack)
+{
+ // printf("ISO pack%u length:%u, actual_length:%u, offset:%u\n", i, pack->length, pack->actual_length, offset);
+ for (int j = 0; j < pack->actual_length; j++) {
+ //for (int j = 0; j < min(pack->actual_length, 16u); j++) {
+ printf("%02x", xfr->buffer[j + offset]);
+ if ((j % 16) == 15)
+ printf("\n");
+ else if ((j % 8) == 7)
+ printf(" ");
+ else
+ printf(" ");
+ }
+}
+
+void decode_packs(const libusb_transfer *xfr, const char *sync_pattern, int sync_length, function<void(const uint8_t *start, const uint8_t *end)> add_callback, function<void(const uint8_t *start)> start_callback)
+{
+ int offset = 0;
+ for (unsigned i = 0; i < xfr->num_iso_packets; i++) {
+ const libusb_iso_packet_descriptor *pack = &xfr->iso_packet_desc[i];
+
+ if (pack->status != LIBUSB_TRANSFER_COMPLETED) {
+ fprintf(stderr, "Error: pack %u/%u status %d\n", i, xfr->num_iso_packets, pack->status);
+ continue;
+//exit(5);
+ }
+
+ const unsigned char *iso_start = xfr->buffer + offset;
+ for (int iso_offset = 0; iso_offset < pack->actual_length; ) { // Usually runs only one iteration.
+ const unsigned char* start_next_frame = (const unsigned char *)memmem(iso_start + iso_offset, pack->actual_length - iso_offset, sync_pattern, sync_length);
+ if (start_next_frame == nullptr) {
+ // add the rest of the buffer
+ add_callback(iso_start + iso_offset, iso_start + pack->actual_length);
+ break;
+ } else {
+ add_callback(iso_start + iso_offset, start_next_frame);
+ start_callback(start_next_frame + sync_length);
+
+ int suboffset = start_next_frame - iso_start;
+ iso_offset = suboffset + sync_length; // skip sync
+ }
+ }
+#if 0
+ dump_pack(xfr, offset, pack);
+#endif
+ offset += pack->length;
+ }
+}
+
+static void cb_xfr(struct libusb_transfer *xfr)
+{
+ if (xfr->status != LIBUSB_TRANSFER_COMPLETED) {
+ fprintf(stderr, "transfer status %d\n", xfr->status);
+ libusb_free_transfer(xfr);
+ exit(3);
+ }
+
+ if (xfr->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS) {
+ if (xfr->endpoint == 0x84) {
+ decode_packs(xfr, "DeckLinkAudioResyncT", 20, add_current_audio, start_new_audio_block);
+ } else {
+ decode_packs(xfr, "\x00\x00\xff\xff", 4, add_current_frame, start_new_frame);
+ }
+ }
+ if (xfr->type == LIBUSB_TRANSFER_TYPE_CONTROL) {
+ const libusb_control_setup *setup = libusb_control_transfer_get_setup(xfr);
+ uint8_t *buf = libusb_control_transfer_get_data(xfr);
+#if 0
+ if (setup->wIndex == 44) {
+ printf("read timer register: 0x%02x%02x%02x%02x\n", buf[0], buf[1], buf[2], buf[3]);
+ } else {
+ printf("read register %2d: 0x%02x%02x%02x%02x\n",
+ 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) {
+ // 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]);
+ }
+ printf("\n");
+ }
+ libusb_fill_control_setup(xfr->buffer,
+ LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, /*request=*/214, /*value=*/0,
+ /*index=*/current_register, /*length=*/4);
+#endif
+ }
+
+#if 0
+ printf("length:%u, actual_length:%u\n", xfr->length, xfr->actual_length);
+ for (i = 0; i < xfr->actual_length; i++) {
+ printf("%02x", xfr->buffer[i]);
+ if (i % 16)
+ printf("\n");
+ else if (i % 8)
+ printf(" ");
+ else
+ printf(" ");
+ }
+#endif
+
+end:
+ if (libusb_submit_transfer(xfr) < 0) {
+ fprintf(stderr, "error re-submitting URB\n");
+ exit(1);
+ }
+}
+
+void usb_thread()
+{
+ printf("usb thread started\n");
+
+ sched_param param;
+ memset(¶m, 0, sizeof(param));
+ param.sched_priority = 1;
+ if (sched_setscheduler(0, SCHED_RR, ¶m) == -1) {
+ printf("couldn't set realtime priority for USB thread: %s\n", strerror(errno));
+ }
+ while (true) {
+ int rc = libusb_handle_events(nullptr);
+ if (rc != LIBUSB_SUCCESS)
+ break;
+ }
+}
+
+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()
+{
+ 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();
+
+ int rc;
+ struct libusb_transfer *xfr;
+ vector<libusb_transfer *> iso_xfrs;
+
+ rc = libusb_init(nullptr);
+ if (rc < 0) {
+ fprintf(stderr, "Error initializing libusb: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+
+ struct libusb_device_handle *devh = libusb_open_device_with_vid_pid(nullptr, 0x1edb, 0xbd3b);
+ if (!devh) {
+ fprintf(stderr, "Error finding USB device\n");
+ exit(1);
+ }
+
+ libusb_config_descriptor *config;
+ rc = libusb_get_config_descriptor(libusb_get_device(devh), /*config_index=*/0, &config);
+ if (rc < 0) {
+ fprintf(stderr, "Error getting configuration: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+ printf("%d interface\n", config->bNumInterfaces);
+ for (int interface_number = 0; interface_number < config->bNumInterfaces; ++interface_number) {
+ 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];
+ 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);
+ }
+ }
+ }
+
+ rc = libusb_set_configuration(devh, /*configuration=*/1);
+ if (rc < 0) {
+ fprintf(stderr, "Error setting configuration 1: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+
+ rc = libusb_claim_interface(devh, 0);
+ if (rc < 0) {
+ fprintf(stderr, "Error claiming interface 0: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+
+ // Alternate setting 1 is output, alternate setting 2 is input.
+ // Card is reset when switching alternates, so the driver uses
+ // this “double switch” when it wants to reset.
+ rc = libusb_set_interface_alt_setting(devh, /*interface=*/0, /*alternate_setting=*/1);
+ if (rc < 0) {
+ fprintf(stderr, "Error setting alternate 1: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+ rc = libusb_set_interface_alt_setting(devh, /*interface=*/0, /*alternate_setting=*/2);
+ if (rc < 0) {
+ fprintf(stderr, "Error setting alternate 1: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+#if 0
+ rc = libusb_set_interface_alt_setting(devh, /*interface=*/0, /*alternate_setting=*/1);
+ if (rc < 0) {
+ fprintf(stderr, "Error setting alternate 1: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+#endif
+
+#if 0
+ rc = libusb_claim_interface(devh, 3);
+ if (rc < 0) {
+ fprintf(stderr, "Error claiming interface 3: %s\n", libusb_error_name(rc));
+ exit(1);
+ }
+#endif
+
+ // theories:
+ // 44 is some kind of timer register (first 16 bits count upwards)
+ // 24 is some sort of watchdog?
+ // you can seemingly set it to 0x73c60001 and that bit will eventually disappear
+ // (or will go to 0x73c60010?), also seen 0x73c60100
+ // 12 also changes all the time, unclear why
+ // 16 seems to be autodetected mode somehow
+ // -- this is e00115e0 after reset?
+ // ed0115e0 after mode change [to output?]
+ // 2d0015e0 after more mode change [to input]
+ // ed0115e0 after more mode change
+ // 2d0015e0 after more mode change
+ //
+ // 390115e0 seems to indicate we have signal
+ // changes to 200115e0 when resolution changes/we lose signal, driver resets after a while
+ //
+ // 200015e0 on startup
+ // changes to 250115e0 when we sync to the signal
+ //
+ // so only first 16 bits count, and 0x0100 is a mask for ok/stable signal?
+ //
+ // 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).
+ //
+ // 4, 8, 20 are unclear. seem to be some sort of bitmask, but we can set them to 0 with no apparent effect.
+ // perhaps some of them are related to analog output?
+ //
+ // 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.
+ //
+ // register 16:
+ // first byte is 0x39 for a stable 576p60 signal, 0x2d for a stable 720p60 signal, 0x20 for no signal
+ //
+ // theories:
+ // 0x01 - stable signal
+ // 0x04 - deep color
+ // 0x08 - unknown (audio??)
+ // 0x20 - 720p??
+ // 0x30 - 576p??
+
+ struct ctrl {
+ int endpoint;
+ int request;
+ int index;
+ uint32_t data;
+ };
+ 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).
+ // clearing the 0x08000000 bit seems to change the capture format (other source?)
+ // 0x10000000 = analog audio instead of embedded audio, it seems
+ // 0x3a000000 = component video? (analog audio)
+ // 0x3c000000 = composite video? (analog audio)
+ // 0x3e000000 = s-video? (analog audio)
+ { LIBUSB_ENDPOINT_OUT, 215, 0, 0x29000000 },
+ //{ 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 (int req = 0; req < sizeof(ctrls) / sizeof(ctrls[0]); ++req) {
+ uint32_t flipped = htonl(ctrls[req].data);
+ static uint8_t value[4];
+ memcpy(value, &flipped, sizeof(flipped));
+ int size = sizeof(value);
+ //if (ctrls[req].request == 215) size = 0;
+ rc = libusb_control_transfer(devh, LIBUSB_REQUEST_TYPE_VENDOR | ctrls[req].endpoint,
+ /*request=*/ctrls[req].request, /*value=*/0, /*index=*/ctrls[req].index, value, size, /*timeout=*/0);
+ if (rc < 0) {
+ fprintf(stderr, "Error on control %d: %s\n", ctrls[req].index, libusb_error_name(rc));
+ exit(1);
+ }
+
+ printf("rc=%d: ep=%d@%d %d -> 0x", rc, ctrls[req].endpoint, ctrls[req].request, ctrls[req].index);
+ for (int i = 0; i < rc; ++i) {
+ printf("%02x", value[i]);
+ }
+ printf("\n");
+ }
+
+#if 0
+ // DEBUG
+ for ( ;; ) {
+ static int my_index = 0;
+ static uint8_t value[4];
+ int size = sizeof(value);
+ rc = libusb_control_transfer(devh, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN,
+ /*request=*/214, /*value=*/0, /*index=*/my_index, value, size, /*timeout=*/0);
+ if (rc < 0) {
+ fprintf(stderr, "Error on control\n");
+ exit(1);
+ }
+ printf("rc=%d index=%d: 0x", rc, my_index);
+ for (int i = 0; i < rc; ++i) {
+ printf("%02x", value[i]);
+ }
+ printf("\n");
+ }
+#endif
+
+#if 0
+ // set up an asynchronous transfer of the timer register
+ static uint8_t cmdbuf[LIBUSB_CONTROL_SETUP_SIZE + 4];
+ static int completed = 0;
+
+ xfr = libusb_alloc_transfer(0);
+ libusb_fill_control_setup(cmdbuf,
+ 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);
+ libusb_submit_transfer(xfr);
+
+ // set up an asynchronous transfer of register 24
+ static uint8_t cmdbuf2[LIBUSB_CONTROL_SETUP_SIZE + 4];
+ static int completed2 = 0;
+
+ xfr = libusb_alloc_transfer(0);
+ libusb_fill_control_setup(cmdbuf2,
+ 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);
+ libusb_submit_transfer(xfr);
+#endif
+
+ // set up an asynchronous transfer of the register dump
+ static uint8_t cmdbuf3[LIBUSB_CONTROL_SETUP_SIZE + 4];
+ static int completed3 = 0;
+
+ xfr = libusb_alloc_transfer(0);
+ libusb_fill_control_setup(cmdbuf3,
+ 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);
+ //libusb_submit_transfer(xfr);
+
+ audiofp = fopen("audio.raw", "wb");
+
+ // set up isochronous transfers for audio and video
+ for (int e = 3; e <= 4; ++e) {
+ //int num_transfers = (e == 3) ? 6 : 6;
+ int num_transfers = 6;
+ for (int i = 0; i < num_transfers; ++i) {
+ int num_iso_pack, size;
+ if (e == 3) {
+ // Video seems to require isochronous packets scaled with the width;
+ // seemingly six lines is about right, rounded up to the required 1kB
+ // multiple.
+ size = WIDTH * 2 * 6;
+ // Note that for 10-bit input, you'll need to increase size accordingly.
+ //size = size * 4 / 3;
+ if (size % 1024 != 0) {
+ size &= ~1023;
+ size += 1024;
+ }
+ num_iso_pack = (2 << 20) / size; // 2 MB.
+ printf("Picking %d packets of 0x%x bytes each\n", num_iso_pack, size);
+ } else {
+ size = 0xc0;
+ num_iso_pack = 80;
+ }
+ int num_bytes = num_iso_pack * size;
+ uint8_t *buf = new uint8_t[num_bytes];
+
+ xfr = libusb_alloc_transfer(num_iso_pack);
+ if (!xfr) {
+ fprintf(stderr, "oom\n");
+ exit(1);
+ }
+
+ int ep = LIBUSB_ENDPOINT_IN | e;
+ libusb_fill_iso_transfer(xfr, devh, ep, buf, num_bytes,
+ num_iso_pack, cb_xfr, nullptr, 0);
+ libusb_set_iso_packet_lengths(xfr, size);
+ iso_xfrs.push_back(xfr);
+ }
+ }
+
+ {
+ int i = 0;
+ for (libusb_transfer *xfr : iso_xfrs) {
+ rc = libusb_submit_transfer(xfr);
+ ++i;
+ if (rc < 0) {
+ //printf("num_bytes=%d\n", num_bytes);
+ fprintf(stderr, "Error submitting iso to endpoint 0x%02x, number %d: %s\n",
+ xfr->endpoint, i, libusb_error_name(rc));
+ exit(1);
+ }
+ }
+ }
+
+ thread(usb_thread).detach();
+
+
+#if 0
+ libusb_release_interface(devh, 0);
+out:
+ if (devh)
+ libusb_close(devh);
+ libusb_exit(nullptr);
+ return rc;
+#endif
+}
projects / bmusb / commitdiff