--- /dev/null
+#include "mjpeg_encoder.h"
+
+#include <jpeglib.h>
+#include <unistd.h>
+#if __SSE2__
+#include <immintrin.h>
+#endif
+#include <list>
+
+extern "C" {
+#include <libavformat/avformat.h>
+}
+
+#include "defs.h"
+#include "ffmpeg_raii.h"
+#include "flags.h"
+#include "httpd.h"
+#include "memcpy_interleaved.h"
+#include "pbo_frame_allocator.h"
+#include "timebase.h"
+#include "va_display_with_cleanup.h"
+
+#include <va/va.h>
+#include <va/va_drm.h>
+#include <va/va_x11.h>
+
+using namespace bmusb;
+using namespace std;
+
+extern void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height);
+
+#define CHECK_VASTATUS(va_status, func) \
+ if (va_status != VA_STATUS_SUCCESS) { \
+ fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
+ exit(1); \
+ }
+
+// From libjpeg (although it's of course identical between implementations).
+static const int jpeg_natural_order[DCTSIZE2] = {
+ 0, 1, 8, 16, 9, 2, 3, 10,
+ 17, 24, 32, 25, 18, 11, 4, 5,
+ 12, 19, 26, 33, 40, 48, 41, 34,
+ 27, 20, 13, 6, 7, 14, 21, 28,
+ 35, 42, 49, 56, 57, 50, 43, 36,
+ 29, 22, 15, 23, 30, 37, 44, 51,
+ 58, 59, 52, 45, 38, 31, 39, 46,
+ 53, 60, 61, 54, 47, 55, 62, 63,
+};
+
+struct VectorDestinationManager {
+ jpeg_destination_mgr pub;
+ std::vector<uint8_t> dest;
+
+ VectorDestinationManager()
+ {
+ pub.init_destination = init_destination_thunk;
+ pub.empty_output_buffer = empty_output_buffer_thunk;
+ pub.term_destination = term_destination_thunk;
+ }
+
+ static void init_destination_thunk(j_compress_ptr ptr)
+ {
+ ((VectorDestinationManager *)(ptr->dest))->init_destination();
+ }
+
+ inline void init_destination()
+ {
+ make_room(0);
+ }
+
+ static boolean empty_output_buffer_thunk(j_compress_ptr ptr)
+ {
+ return ((VectorDestinationManager *)(ptr->dest))->empty_output_buffer();
+ }
+
+ inline bool empty_output_buffer()
+ {
+ make_room(dest.size()); // Should ignore pub.free_in_buffer!
+ return true;
+ }
+
+ inline void make_room(size_t bytes_used)
+ {
+ dest.resize(bytes_used + 4096);
+ dest.resize(dest.capacity());
+ pub.next_output_byte = dest.data() + bytes_used;
+ pub.free_in_buffer = dest.size() - bytes_used;
+ }
+
+ static void term_destination_thunk(j_compress_ptr ptr)
+ {
+ ((VectorDestinationManager *)(ptr->dest))->term_destination();
+ }
+
+ inline void term_destination()
+ {
+ dest.resize(dest.size() - pub.free_in_buffer);
+ }
+};
+static_assert(std::is_standard_layout<VectorDestinationManager>::value, "");
+
+int MJPEGEncoder::write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
+{
+ MJPEGEncoder *engine = (MJPEGEncoder *)opaque;
+ return engine->write_packet2(buf, buf_size, type, time);
+}
+
+int MJPEGEncoder::write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
+{
+ if (type == AVIO_DATA_MARKER_HEADER) {
+ mux_header.append((char *)buf, buf_size);
+ httpd->set_header(HTTPD::MULTICAM_STREAM, mux_header);
+ } else {
+ httpd->add_data(HTTPD::MULTICAM_STREAM, (char *)buf, buf_size, /*keyframe=*/true, AV_NOPTS_VALUE, AVRational{ AV_TIME_BASE, 1 });
+ }
+ return buf_size;
+}
+
+MJPEGEncoder::MJPEGEncoder(HTTPD *httpd, const string &va_display)
+ : httpd(httpd)
+{
+ encoder_thread = thread(&MJPEGEncoder::encoder_thread_func, this);
+
+ // Set up the mux. We don't use the Mux wrapper, because it's geared towards
+ // a situation with only one video stream (and possibly one audio stream)
+ // with known width/height, and we don't need the extra functionality it provides.
+ avctx.reset(avformat_alloc_context());
+ avctx->oformat = av_guess_format("mp4", nullptr, nullptr);
+
+ uint8_t *buf = (uint8_t *)av_malloc(MUX_BUFFER_SIZE);
+ avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, this, nullptr, nullptr, nullptr);
+ avctx->pb->write_data_type = &MJPEGEncoder::write_packet2_thunk;
+ avctx->flags = AVFMT_FLAG_CUSTOM_IO;
+
+ for (int card_idx = 0; card_idx < global_flags.num_cards; ++card_idx) {
+ AVStream *stream = avformat_new_stream(avctx.get(), nullptr);
+ if (stream == nullptr) {
+ fprintf(stderr, "avformat_new_stream() failed\n");
+ exit(1);
+ }
+ stream->time_base = AVRational{ 1, TIMEBASE };
+ stream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ stream->codecpar->codec_id = AV_CODEC_ID_MJPEG;
+
+ // Used for aspect ratio only. Can change without notice (the mux won't care).
+ stream->codecpar->width = global_flags.width;
+ stream->codecpar->height = global_flags.height;
+
+ // TODO: We could perhaps use the interpretation for each card here
+ // (or at least the command-line flags) instead of the defaults,
+ // but what would we do when they change?
+ stream->codecpar->color_primaries = AVCOL_PRI_BT709;
+ stream->codecpar->color_trc = AVCOL_TRC_IEC61966_2_1;
+ stream->codecpar->color_space = AVCOL_SPC_BT709;
+ stream->codecpar->color_range = AVCOL_RANGE_MPEG;
+ stream->codecpar->chroma_location = AVCHROMA_LOC_LEFT;
+ stream->codecpar->field_order = AV_FIELD_PROGRESSIVE;
+ }
+
+ AVDictionary *options = NULL;
+ vector<pair<string, string>> opts = MUX_OPTS;
+ for (pair<string, string> opt : opts) {
+ av_dict_set(&options, opt.first.c_str(), opt.second.c_str(), 0);
+ }
+ if (avformat_write_header(avctx.get(), &options) < 0) {
+ fprintf(stderr, "avformat_write_header() failed\n");
+ exit(1);
+ }
+
+ // Initialize VA-API.
+ string error;
+ va_dpy = try_open_va(va_display, &error, &config_id);
+ if (va_dpy == nullptr) {
+ fprintf(stderr, "Could not initialize VA-API for MJPEG encoding: %s. JPEGs will be encoded in software if needed.\n", error.c_str());
+ }
+
+ running = true;
+}
+
+void MJPEGEncoder::stop()
+{
+ if (!running) {
+ return;
+ }
+ running = false;
+ should_quit = true;
+ any_frames_to_be_encoded.notify_all();
+ encoder_thread.join();
+}
+
+unique_ptr<VADisplayWithCleanup> MJPEGEncoder::try_open_va(const string &va_display, string *error, VAConfigID *config_id)
+{
+ unique_ptr<VADisplayWithCleanup> va_dpy = va_open_display(va_display);
+ if (va_dpy == nullptr) {
+ if (error) *error = "Opening VA display failed";
+ return nullptr;
+ }
+ int major_ver, minor_ver;
+ VAStatus va_status = vaInitialize(va_dpy->va_dpy, &major_ver, &minor_ver);
+ if (va_status != VA_STATUS_SUCCESS) {
+ char buf[256];
+ snprintf(buf, sizeof(buf), "vaInitialize() failed with status %d\n", va_status);
+ if (error != nullptr) *error = buf;
+ return nullptr;
+ }
+
+ VAConfigAttrib attr = { VAConfigAttribRTFormat, VA_RT_FORMAT_YUV422 };
+ va_status = vaCreateConfig(va_dpy->va_dpy, VAProfileJPEGBaseline, VAEntrypointEncPicture,
+ &attr, 1, config_id);
+ if (va_status == VA_STATUS_ERROR_UNSUPPORTED_ENTRYPOINT) {
+ if (error != nullptr) *error = "No hardware support";
+ return nullptr;
+ } else if (va_status != VA_STATUS_SUCCESS) {
+ char buf[256];
+ snprintf(buf, sizeof(buf), "vaCreateConfig() failed with status %d\n", va_status);
+ if (error != nullptr) *error = buf;
+ return nullptr;
+ }
+
+ int num_formats = vaMaxNumImageFormats(va_dpy->va_dpy);
+ assert(num_formats > 0);
+
+ unique_ptr<VAImageFormat[]> formats(new VAImageFormat[num_formats]);
+ va_status = vaQueryImageFormats(va_dpy->va_dpy, formats.get(), &num_formats);
+ if (va_status != VA_STATUS_SUCCESS) {
+ char buf[256];
+ snprintf(buf, sizeof(buf), "vaQueryImageFormats() failed with status %d\n", va_status);
+ if (error != nullptr) *error = buf;
+ return nullptr;
+ }
+
+ return va_dpy;
+}
+
+void MJPEGEncoder::upload_frame(int64_t pts, unsigned card_index, RefCountedFrame frame, const bmusb::VideoFormat &video_format, size_t y_offset, size_t cbcr_offset)
+{
+ PBOFrameAllocator::Userdata *userdata = (PBOFrameAllocator::Userdata *)frame->userdata;
+ if (video_format.width == 0 || video_format.height == 0) {
+ return;
+ }
+ if (video_format.interlaced) {
+ fprintf(stderr, "Card %u: Ignoring JPEG encoding for interlaced frame\n", card_index);
+ return;
+ }
+ if (userdata->pixel_format != PixelFormat_8BitYCbCr ||
+ !frame->interleaved) {
+ fprintf(stderr, "Card %u: Ignoring JPEG encoding for unsupported pixel format\n", card_index);
+ return;
+ }
+ if (video_format.width > 4096 || video_format.height > 4096) {
+ fprintf(stderr, "Card %u: Ignoring JPEG encoding for oversized frame\n", card_index);
+ return;
+ }
+
+ lock_guard<mutex> lock(mu);
+ frames_to_be_encoded.push(QueuedFrame{ pts, card_index, frame, video_format, y_offset, cbcr_offset });
+ any_frames_to_be_encoded.notify_all();
+}
+
+void MJPEGEncoder::encoder_thread_func()
+{
+ pthread_setname_np(pthread_self(), "MJPEG_Encode");
+ posix_memalign((void **)&tmp_y, 4096, 4096 * 8);
+ posix_memalign((void **)&tmp_cbcr, 4096, 4096 * 8);
+ posix_memalign((void **)&tmp_cb, 4096, 4096 * 8);
+ posix_memalign((void **)&tmp_cr, 4096, 4096 * 8);
+
+ unique_lock<mutex> lock(mu);
+ for (;;) {
+ any_frames_to_be_encoded.wait(lock, [this] { return !frames_to_be_encoded.empty() || should_quit; });
+ if (should_quit) return;
+ QueuedFrame qf = move(frames_to_be_encoded.front());
+ frames_to_be_encoded.pop();
+
+ vector<uint8_t> jpeg = encode_jpeg(qf);
+
+ AVPacket pkt;
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.buf = nullptr;
+ pkt.data = &jpeg[0];
+ pkt.size = jpeg.size();
+ pkt.stream_index = qf.card_index;
+ pkt.flags = AV_PKT_FLAG_KEY;
+ pkt.pts = pkt.dts = qf.pts;
+
+ if (av_write_frame(avctx.get(), &pkt) < 0) {
+ fprintf(stderr, "av_write_frame() failed\n");
+ exit(1);
+ }
+ }
+}
+
+class VABufferDestroyer {
+public:
+ VABufferDestroyer(VADisplay dpy, VABufferID buf)
+ : dpy(dpy), buf(buf) {}
+
+ ~VABufferDestroyer() {
+ VAStatus va_status = vaDestroyBuffer(dpy, buf);
+ CHECK_VASTATUS(va_status, "vaDestroyBuffer");
+ }
+
+private:
+ VADisplay dpy;
+ VABufferID buf;
+};
+
+MJPEGEncoder::VAResources MJPEGEncoder::get_va_resources(unsigned width, unsigned height)
+{
+ {
+ lock_guard<mutex> lock(va_resources_mutex);
+ for (auto it = va_resources_freelist.begin(); it != va_resources_freelist.end(); ++it) {
+ if (it->width == width && it->height == height) {
+ VAResources ret = *it;
+ va_resources_freelist.erase(it);
+ return ret;
+ }
+ }
+ }
+
+ VAResources ret;
+
+ ret.width = width;
+ ret.height = height;
+
+ VASurfaceAttrib attrib;
+ attrib.flags = VA_SURFACE_ATTRIB_SETTABLE;
+ attrib.type = VASurfaceAttribPixelFormat;
+ attrib.value.type = VAGenericValueTypeInteger;
+ attrib.value.value.i = VA_FOURCC_UYVY;
+
+ VAStatus va_status = vaCreateSurfaces(va_dpy->va_dpy, VA_RT_FORMAT_YUV422,
+ width, height,
+ &ret.surface, 1, &attrib, 1);
+ CHECK_VASTATUS(va_status, "vaCreateSurfaces");
+
+ va_status = vaCreateContext(va_dpy->va_dpy, config_id, width, height, 0, &ret.surface, 1, &ret.context);
+ CHECK_VASTATUS(va_status, "vaCreateContext");
+
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAEncCodedBufferType, width * height * 3 + 8192, 1, nullptr, &ret.data_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+
+ return ret;
+}
+
+void MJPEGEncoder::release_va_resources(MJPEGEncoder::VAResources resources)
+{
+ lock_guard<mutex> lock(va_resources_mutex);
+ if (va_resources_freelist.size() > 10) {
+ auto it = va_resources_freelist.end();
+ --it;
+
+ VAStatus va_status = vaDestroyBuffer(va_dpy->va_dpy, it->data_buffer);
+ CHECK_VASTATUS(va_status, "vaDestroyBuffer");
+
+ va_status = vaDestroyContext(va_dpy->va_dpy, it->context);
+ CHECK_VASTATUS(va_status, "vaDestroyContext");
+
+ va_status = vaDestroySurfaces(va_dpy->va_dpy, &it->surface, 1);
+ CHECK_VASTATUS(va_status, "vaDestroySurfaces");
+
+ va_resources_freelist.erase(it);
+ }
+
+ va_resources_freelist.push_front(resources);
+}
+
+void MJPEGEncoder::init_jpeg_422(unsigned width, unsigned height, VectorDestinationManager *dest, jpeg_compress_struct *cinfo)
+{
+ jpeg_error_mgr jerr;
+ cinfo->err = jpeg_std_error(&jerr);
+ jpeg_create_compress(cinfo);
+
+ cinfo->dest = (jpeg_destination_mgr *)dest;
+
+ cinfo->input_components = 3;
+ jpeg_set_defaults(cinfo);
+ jpeg_set_quality(cinfo, quality, /*force_baseline=*/false);
+
+ cinfo->image_width = width;
+ cinfo->image_height = height;
+ cinfo->raw_data_in = true;
+ jpeg_set_colorspace(cinfo, JCS_YCbCr);
+ cinfo->comp_info[0].h_samp_factor = 2;
+ cinfo->comp_info[0].v_samp_factor = 1;
+ cinfo->comp_info[1].h_samp_factor = 1;
+ cinfo->comp_info[1].v_samp_factor = 1;
+ cinfo->comp_info[2].h_samp_factor = 1;
+ cinfo->comp_info[2].v_samp_factor = 1;
+ cinfo->CCIR601_sampling = true; // Seems to be mostly ignored by libjpeg, though.
+ jpeg_start_compress(cinfo, true);
+}
+
+vector<uint8_t> MJPEGEncoder::get_jpeg_header(unsigned width, unsigned height, jpeg_compress_struct *cinfo)
+{
+ VectorDestinationManager dest;
+ init_jpeg_422(width, height, &dest, cinfo);
+
+ // Make a dummy black image; there's seemingly no other easy way of
+ // making libjpeg outputting all of its headers.
+ JSAMPROW yptr[8], cbptr[8], crptr[8];
+ JSAMPARRAY data[3] = { yptr, cbptr, crptr };
+ memset(tmp_y, 0, 4096);
+ memset(tmp_cb, 0, 4096);
+ memset(tmp_cr, 0, 4096);
+ for (unsigned yy = 0; yy < 8; ++yy) {
+ yptr[yy] = tmp_y;
+ cbptr[yy] = tmp_cb;
+ crptr[yy] = tmp_cr;
+ }
+ for (unsigned y = 0; y < height; y += 8) {
+ jpeg_write_raw_data(cinfo, data, /*num_lines=*/8);
+ }
+ jpeg_finish_compress(cinfo);
+
+ // We're only interested in the header, not the data after it.
+ dest.term_destination();
+ for (size_t i = 0; i < dest.dest.size() - 1; ++i) {
+ if (dest.dest[i] == 0xff && dest.dest[i + 1] == 0xda) { // Start of scan (SOS).
+ unsigned len = dest.dest[i + 2] * 256 + dest.dest[i + 3];
+ dest.dest.resize(i + len + 2);
+ break;
+ }
+ }
+
+ return dest.dest;
+}
+
+MJPEGEncoder::VAData MJPEGEncoder::get_va_data_for_resolution(unsigned width, unsigned height)
+{
+ pair<unsigned, unsigned> key(width, height);
+ if (va_data_for_resolution.count(key)) {
+ return va_data_for_resolution[key];
+ }
+
+ // Use libjpeg to generate a header and set sane defaults for e.g.
+ // quantization tables. Then do the actual encode with VA-API.
+ jpeg_compress_struct cinfo;
+ vector<uint8_t> jpeg_header = get_jpeg_header(width, height, &cinfo);
+
+ // Picture parameters.
+ VAEncPictureParameterBufferJPEG pic_param;
+ memset(&pic_param, 0, sizeof(pic_param));
+ pic_param.reconstructed_picture = VA_INVALID_ID;
+ pic_param.picture_width = cinfo.image_width;
+ pic_param.picture_height = cinfo.image_height;
+ for (int component_idx = 0; component_idx < cinfo.num_components; ++component_idx) {
+ const jpeg_component_info *comp = &cinfo.comp_info[component_idx];
+ pic_param.component_id[component_idx] = comp->component_id;
+ pic_param.quantiser_table_selector[component_idx] = comp->quant_tbl_no;
+ }
+ pic_param.num_components = cinfo.num_components;
+ pic_param.num_scan = 1;
+ pic_param.sample_bit_depth = 8;
+ pic_param.coded_buf = VA_INVALID_ID; // To be filled out by caller.
+ pic_param.pic_flags.bits.huffman = 1;
+ pic_param.quality = 50; // Don't scale the given quantization matrices. (See gen8_mfc_jpeg_fqm_state)
+
+ // Quantization matrices.
+ VAQMatrixBufferJPEG q;
+ memset(&q, 0, sizeof(q));
+
+ q.load_lum_quantiser_matrix = true;
+ q.load_chroma_quantiser_matrix = true;
+ for (int quant_tbl_idx = 0; quant_tbl_idx < min(4, NUM_QUANT_TBLS); ++quant_tbl_idx) {
+ const JQUANT_TBL *qtbl = cinfo.quant_tbl_ptrs[quant_tbl_idx];
+ assert((qtbl == nullptr) == (quant_tbl_idx >= 2));
+ if (qtbl == nullptr) continue;
+
+ uint8_t *qmatrix = (quant_tbl_idx == 0) ? q.lum_quantiser_matrix : q.chroma_quantiser_matrix;
+ for (int i = 0; i < 64; ++i) {
+ if (qtbl->quantval[i] > 255) {
+ fprintf(stderr, "Baseline JPEG only!\n");
+ abort();
+ }
+ qmatrix[i] = qtbl->quantval[jpeg_natural_order[i]];
+ }
+ }
+
+ // Huffman tables (arithmetic is not supported).
+ VAHuffmanTableBufferJPEGBaseline huff;
+ memset(&huff, 0, sizeof(huff));
+
+ for (int huff_tbl_idx = 0; huff_tbl_idx < min(2, NUM_HUFF_TBLS); ++huff_tbl_idx) {
+ const JHUFF_TBL *ac_hufftbl = cinfo.ac_huff_tbl_ptrs[huff_tbl_idx];
+ const JHUFF_TBL *dc_hufftbl = cinfo.dc_huff_tbl_ptrs[huff_tbl_idx];
+ if (ac_hufftbl == nullptr) {
+ assert(dc_hufftbl == nullptr);
+ huff.load_huffman_table[huff_tbl_idx] = 0;
+ } else {
+ assert(dc_hufftbl != nullptr);
+ huff.load_huffman_table[huff_tbl_idx] = 1;
+
+ for (int i = 0; i < 16; ++i) {
+ huff.huffman_table[huff_tbl_idx].num_dc_codes[i] = dc_hufftbl->bits[i + 1];
+ }
+ for (int i = 0; i < 12; ++i) {
+ huff.huffman_table[huff_tbl_idx].dc_values[i] = dc_hufftbl->huffval[i];
+ }
+ for (int i = 0; i < 16; ++i) {
+ huff.huffman_table[huff_tbl_idx].num_ac_codes[i] = ac_hufftbl->bits[i + 1];
+ }
+ for (int i = 0; i < 162; ++i) {
+ huff.huffman_table[huff_tbl_idx].ac_values[i] = ac_hufftbl->huffval[i];
+ }
+ }
+ }
+
+ // Slice parameters (metadata about the slice).
+ VAEncSliceParameterBufferJPEG parms;
+ memset(&parms, 0, sizeof(parms));
+ for (int component_idx = 0; component_idx < cinfo.num_components; ++component_idx) {
+ const jpeg_component_info *comp = &cinfo.comp_info[component_idx];
+ parms.components[component_idx].component_selector = comp->component_id;
+ parms.components[component_idx].dc_table_selector = comp->dc_tbl_no;
+ parms.components[component_idx].ac_table_selector = comp->ac_tbl_no;
+ if (parms.components[component_idx].dc_table_selector > 1 ||
+ parms.components[component_idx].ac_table_selector > 1) {
+ fprintf(stderr, "Uses too many Huffman tables\n");
+ abort();
+ }
+ }
+ parms.num_components = cinfo.num_components;
+ parms.restart_interval = cinfo.restart_interval;
+
+ jpeg_destroy_compress(&cinfo);
+
+ VAData ret;
+ ret.jpeg_header = move(jpeg_header);
+ ret.pic_param = pic_param;
+ ret.q = q;
+ ret.huff = huff;
+ ret.parms = parms;
+ va_data_for_resolution[key] = ret;
+ return ret;
+}
+
+vector<uint8_t> MJPEGEncoder::encode_jpeg(const QueuedFrame &qf)
+{
+ if (va_dpy != nullptr) {
+ return encode_jpeg_va(qf);
+ } else {
+ return encode_jpeg_libjpeg(qf);
+ }
+}
+
+vector<uint8_t> MJPEGEncoder::encode_jpeg_va(const QueuedFrame &qf)
+{
+ unsigned width = qf.video_format.width;
+ unsigned height = qf.video_format.height;
+
+ VAResources resources = get_va_resources(width, height);
+ ReleaseVAResources release(this, resources);
+
+ VAData va_data = get_va_data_for_resolution(width, height);
+ va_data.pic_param.coded_buf = resources.data_buffer;
+
+ VABufferID pic_param_buffer;
+ VAStatus va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAEncPictureParameterBufferType, sizeof(va_data.pic_param), 1, &va_data.pic_param, &pic_param_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_pic_param(va_dpy->va_dpy, pic_param_buffer);
+
+ VABufferID q_buffer;
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAQMatrixBufferType, sizeof(va_data.q), 1, &va_data.q, &q_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_iq(va_dpy->va_dpy, q_buffer);
+
+ VABufferID huff_buffer;
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAHuffmanTableBufferType, sizeof(va_data.huff), 1, &va_data.huff, &huff_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_huff(va_dpy->va_dpy, huff_buffer);
+
+ VABufferID slice_param_buffer;
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAEncSliceParameterBufferType, sizeof(va_data.parms), 1, &va_data.parms, &slice_param_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_slice_param(va_dpy->va_dpy, slice_param_buffer);
+
+ VAImage image;
+ va_status = vaDeriveImage(va_dpy->va_dpy, resources.surface, &image);
+ CHECK_VASTATUS(va_status, "vaDeriveImage");
+
+ // Upload the pixel data.
+ uint8_t *surface_p = nullptr;
+ vaMapBuffer(va_dpy->va_dpy, image.buf, (void **)&surface_p);
+
+ size_t field_start_line = qf.video_format.extra_lines_top; // No interlacing support.
+ size_t field_start = qf.cbcr_offset * 2 + qf.video_format.width * field_start_line * 2;
+
+ {
+ const uint8_t *src = qf.frame->data_copy + field_start;
+ uint8_t *dst = (unsigned char *)surface_p + image.offsets[0];
+ memcpy_with_pitch(dst, src, qf.video_format.width * 2, image.pitches[0], qf.video_format.height);
+ }
+
+ va_status = vaUnmapBuffer(va_dpy->va_dpy, image.buf);
+ CHECK_VASTATUS(va_status, "vaUnmapBuffer");
+ va_status = vaDestroyImage(va_dpy->va_dpy, image.image_id);
+ CHECK_VASTATUS(va_status, "vaDestroyImage");
+
+ // Finally, stick in the JPEG header.
+ VAEncPackedHeaderParameterBuffer header_parm;
+ header_parm.type = VAEncPackedHeaderRawData;
+ header_parm.bit_length = 8 * va_data.jpeg_header.size();
+
+ VABufferID header_parm_buffer;
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAEncPackedHeaderParameterBufferType, sizeof(header_parm), 1, &header_parm, &header_parm_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_header(va_dpy->va_dpy, header_parm_buffer);
+
+ VABufferID header_data_buffer;
+ va_status = vaCreateBuffer(va_dpy->va_dpy, config_id, VAEncPackedHeaderDataBufferType, va_data.jpeg_header.size(), 1, va_data.jpeg_header.data(), &header_data_buffer);
+ CHECK_VASTATUS(va_status, "vaCreateBuffer");
+ VABufferDestroyer destroy_header_data(va_dpy->va_dpy, header_data_buffer);
+
+ va_status = vaBeginPicture(va_dpy->va_dpy, resources.context, resources.surface);
+ CHECK_VASTATUS(va_status, "vaBeginPicture");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &pic_param_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(pic_param)");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &q_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(q)");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &huff_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(huff)");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &slice_param_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(slice_param)");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &header_parm_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(header_parm)");
+ va_status = vaRenderPicture(va_dpy->va_dpy, resources.context, &header_data_buffer, 1);
+ CHECK_VASTATUS(va_status, "vaRenderPicture(header_data)");
+ va_status = vaEndPicture(va_dpy->va_dpy, resources.context);
+ CHECK_VASTATUS(va_status, "vaEndPicture");
+
+ va_status = vaSyncSurface(va_dpy->va_dpy, resources.surface);
+ CHECK_VASTATUS(va_status, "vaSyncSurface");
+
+ VACodedBufferSegment *segment;
+ va_status = vaMapBuffer(va_dpy->va_dpy, resources.data_buffer, (void **)&segment);
+ CHECK_VASTATUS(va_status, "vaMapBuffer");
+
+ const char *coded_buf = reinterpret_cast<char *>(segment->buf);
+ vector<uint8_t> jpeg(coded_buf, coded_buf + segment->size);
+
+ va_status = vaUnmapBuffer(va_dpy->va_dpy, resources.data_buffer);
+ CHECK_VASTATUS(va_status, "vaUnmapBuffer");
+
+ return jpeg;
+}
+
+vector<uint8_t> MJPEGEncoder::encode_jpeg_libjpeg(const QueuedFrame &qf)
+{
+ unsigned width = qf.video_format.width;
+ unsigned height = qf.video_format.height;
+
+ VectorDestinationManager dest;
+ jpeg_compress_struct cinfo;
+ init_jpeg_422(width, height, &dest, &cinfo);
+
+ size_t field_start_line = qf.video_format.extra_lines_top; // No interlacing support.
+ size_t field_start = qf.cbcr_offset * 2 + qf.video_format.width * field_start_line * 2;
+
+ JSAMPROW yptr[8], cbptr[8], crptr[8];
+ JSAMPARRAY data[3] = { yptr, cbptr, crptr };
+ for (unsigned y = 0; y < qf.video_format.height; y += 8) {
+ const uint8_t *src = qf.frame->data_copy + field_start + y * qf.video_format.width * 2;
+
+ memcpy_interleaved(tmp_y, tmp_cbcr, src, qf.video_format.width * 8 * 2);
+ memcpy_interleaved(tmp_cb, tmp_cr, tmp_cbcr, qf.video_format.width * 8);
+ for (unsigned yy = 0; yy < 8; ++yy) {
+ yptr[yy] = tmp_y + yy * width;
+ cbptr[yy] = tmp_cb + yy * width / 2;
+ crptr[yy] = tmp_cr + yy * width / 2;
+ }
+ jpeg_write_raw_data(&cinfo, data, /*num_lines=*/8);
+ }
+ jpeg_finish_compress(&cinfo);
+
+ return dest.dest;
+}
projects / nageru / blobdiff