X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=httpd.cpp;h=858d9522c9354f1ea275cd0e859e5fef60d30636;hp=6a92699936c45ef3a0c324064512af69abd2d2b8;hb=refs%2Fheads%2Fmultichannel_audio;hpb=4b41f5983b5196589cb1ef6fa2bc0b93d28b8732 diff --git a/httpd.cpp b/httpd.cpp index 6a92699..858d952 100644 --- a/httpd.cpp +++ b/httpd.cpp @@ -1,78 +1,58 @@ +#include "httpd.h" + #include +#include +#include #include +#include #include -#include #include - -extern "C" { -#include -#include -#include -#include -#include -#include -#include -} - -#include - -#include "httpd.h" +#include +#include +#include #include "defs.h" -#include "timebase.h" +#include "metacube2.h" struct MHD_Connection; struct MHD_Response; using namespace std; -HTTPD::HTTPD(int width, int height) - : width(width), height(height) -{ -} - -void HTTPD::start(int port) +HTTPD::HTTPD() { - MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION | MHD_USE_POLL_INTERNALLY | MHD_USE_DUAL_STACK, - port, - nullptr, nullptr, - &answer_to_connection_thunk, this, - MHD_OPTION_NOTIFY_COMPLETED, &request_completed_thunk, this, - MHD_OPTION_END); } -void HTTPD::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts) +HTTPD::~HTTPD() { - unique_lock lock(streams_mutex); - for (Stream *stream : streams) { - stream->add_packet(pkt, pts, dts); - } - if (file_mux) { - file_mux->add_packet(pkt, pts, dts); + if (mhd) { + MHD_quiesce_daemon(mhd); + for (Stream *stream : streams) { + stream->stop(); + } + MHD_stop_daemon(mhd); } } -void HTTPD::open_output_file(const string &filename) +void HTTPD::start(int port) { - AVFormatContext *avctx = avformat_alloc_context(); - avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL); - assert(filename.size() < sizeof(avctx->filename) - 1); - strcpy(avctx->filename, filename.c_str()); - - string url = "file:" + filename; - int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL); - if (ret < 0) { - char tmp[AV_ERROR_MAX_STRING_SIZE]; - fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret)); - exit(1); + mhd = MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION | MHD_USE_POLL_INTERNALLY | MHD_USE_DUAL_STACK, + port, + nullptr, nullptr, + &answer_to_connection_thunk, this, + MHD_OPTION_NOTIFY_COMPLETED, nullptr, this, + MHD_OPTION_END); + if (mhd == nullptr) { + fprintf(stderr, "Warning: Could not open HTTP server. (Port already in use?)\n"); } - - file_mux.reset(new Mux(avctx, width, height)); } -void HTTPD::close_output_file() +void HTTPD::add_data(const char *buf, size_t size, bool keyframe) { - file_mux.reset(); + unique_lock lock(streams_mutex); + for (Stream *stream : streams) { + stream->add_data(buf, size, keyframe ? Stream::DATA_TYPE_KEYFRAME : Stream::DATA_TYPE_OTHER); + } } int HTTPD::answer_to_connection_thunk(void *cls, MHD_Connection *connection, @@ -89,9 +69,16 @@ int HTTPD::answer_to_connection(MHD_Connection *connection, const char *version, const char *upload_data, size_t *upload_data_size, void **con_cls) { - AVOutputFormat *oformat = av_guess_format(STREAM_MUX_NAME, nullptr, nullptr); - assert(oformat != nullptr); - HTTPD::Stream *stream = new HTTPD::Stream(oformat, width, height); + // See if the URL ends in “.metacube”. + HTTPD::Stream::Framing framing; + if (strstr(url, ".metacube") == url + strlen(url) - strlen(".metacube")) { + framing = HTTPD::Stream::FRAMING_METACUBE; + } else { + framing = HTTPD::Stream::FRAMING_RAW; + } + + HTTPD::Stream *stream = new HTTPD::Stream(this, framing); + stream->add_data(header.data(), header.size(), Stream::DATA_TYPE_HEADER); { unique_lock lock(streams_mutex); streams.insert(stream); @@ -101,136 +88,28 @@ int HTTPD::answer_to_connection(MHD_Connection *connection, // Does not strictly have to be equal to MUX_BUFFER_SIZE. MHD_Response *response = MHD_create_response_from_callback( (size_t)-1, MUX_BUFFER_SIZE, &HTTPD::Stream::reader_callback_thunk, stream, &HTTPD::free_stream); + + // TODO: Content-type? + if (framing == HTTPD::Stream::FRAMING_METACUBE) { + MHD_add_response_header(response, "Content-encoding", "metacube"); + } int ret = MHD_queue_response(connection, MHD_HTTP_OK, response); - //MHD_destroy_response(response); + MHD_destroy_response(response); // Only decreases the refcount; actual free is after the request is done. return ret; } void HTTPD::free_stream(void *cls) { - // FIXME: When is this actually called, if ever? - // Also, shouldn't we remove it from streams? HTTPD::Stream *stream = (HTTPD::Stream *)cls; - delete stream; -} - -void HTTPD::request_completed_thunk(void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe) -{ - HTTPD *httpd = (HTTPD *)cls; - return httpd->request_completed(connection, con_cls, toe); -} - -void HTTPD::request_completed(struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe) -{ - if (con_cls == nullptr) { - // Request was never set up. - return; - } - HTTPD::Stream *stream = (HTTPD::Stream *)*con_cls; + HTTPD *httpd = stream->get_parent(); { - unique_lock lock(streams_mutex); + unique_lock lock(httpd->streams_mutex); delete stream; - streams.erase(stream); + httpd->streams.erase(stream); } } -HTTPD::Mux::Mux(AVFormatContext *avctx, int width, int height) - : avctx(avctx) -{ - AVCodec *codec_video = avcodec_find_encoder(AV_CODEC_ID_H264); - avstream_video = avformat_new_stream(avctx, codec_video); - if (avstream_video == nullptr) { - fprintf(stderr, "avformat_new_stream() failed\n"); - exit(1); - } - avstream_video->time_base = AVRational{1, TIMEBASE}; - avstream_video->codec->codec_type = AVMEDIA_TYPE_VIDEO; - avstream_video->codec->codec_id = AV_CODEC_ID_H264; - avstream_video->codec->width = width; - avstream_video->codec->height = height; - avstream_video->codec->time_base = AVRational{1, TIMEBASE}; - avstream_video->codec->ticks_per_frame = 1; // or 2? - - // Colorspace details. Closely correspond to settings in EffectChain_finalize, - // as noted in each comment. - // Note that the H.264 stream also contains this information and depending on the - // mux, this might simply get ignored. See sps_rbsp(). - avstream_video->codec->color_primaries = AVCOL_PRI_BT709; // RGB colorspace (inout_format.color_space). - avstream_video->codec->color_trc = AVCOL_TRC_UNSPECIFIED; // Gamma curve (inout_format.gamma_curve). - avstream_video->codec->colorspace = AVCOL_SPC_SMPTE170M; // YUV colorspace (output_ycbcr_format.luma_coefficients). - avstream_video->codec->color_range = AVCOL_RANGE_MPEG; // Full vs. limited range (output_ycbcr_format.full_range). - avstream_video->codec->chroma_sample_location = AVCHROMA_LOC_LEFT; // Chroma sample location. See chroma_offset_0[] in Mixer::subsample_chroma(). - avstream_video->codec->field_order = AV_FIELD_PROGRESSIVE; - - AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC); - avstream_audio = avformat_new_stream(avctx, codec_audio); - if (avstream_audio == nullptr) { - fprintf(stderr, "avformat_new_stream() failed\n"); - exit(1); - } - avstream_audio->time_base = AVRational{1, TIMEBASE}; - avstream_audio->codec->bit_rate = AUDIO_OUTPUT_BIT_RATE; - avstream_audio->codec->sample_rate = OUTPUT_FREQUENCY; - avstream_audio->codec->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT; - avstream_audio->codec->channels = 2; - avstream_audio->codec->channel_layout = AV_CH_LAYOUT_STEREO; - avstream_audio->codec->time_base = AVRational{1, TIMEBASE}; - - AVDictionary *options = NULL; - vector> opts = MUX_OPTS; - for (pair opt : opts) { - av_dict_set(&options, opt.first.c_str(), opt.second.c_str(), 0); - } - if (avformat_write_header(avctx, &options) < 0) { - fprintf(stderr, "avformat_write_header() failed\n"); - exit(1); - } -} - -HTTPD::Mux::~Mux() -{ - av_write_trailer(avctx); - avformat_free_context(avctx); -} - -void HTTPD::Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts) -{ - if (!seen_keyframe && !(pkt.stream_index == 0 && (pkt.flags & AV_PKT_FLAG_KEY))) { - // Wait until we see the first (video) key frame. - return; - } - seen_keyframe = true; - - AVPacket pkt_copy; - av_copy_packet(&pkt_copy, &pkt); - if (pkt.stream_index == 0) { - pkt_copy.pts = av_rescale_q(pts, AVRational{1, TIMEBASE}, avstream_video->time_base); - pkt_copy.dts = av_rescale_q(dts, AVRational{1, TIMEBASE}, avstream_video->time_base); - } else if (pkt.stream_index == 1) { - pkt_copy.pts = av_rescale_q(pts, AVRational{1, TIMEBASE}, avstream_audio->time_base); - pkt_copy.dts = av_rescale_q(dts, AVRational{1, TIMEBASE}, avstream_audio->time_base); - } else { - assert(false); - } - - if (av_interleaved_write_frame(avctx, &pkt_copy) < 0) { - fprintf(stderr, "av_interleaved_write_frame() failed\n"); - exit(1); - } -} - -HTTPD::Stream::Stream(AVOutputFormat *oformat, int width, int height) -{ - AVFormatContext *avctx = avformat_alloc_context(); - avctx->oformat = oformat; - uint8_t *buf = (uint8_t *)av_malloc(MUX_BUFFER_SIZE); - avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, this, nullptr, &HTTPD::Stream::write_packet_thunk, nullptr); - avctx->flags = AVFMT_FLAG_CUSTOM_IO; - - mux.reset(new Mux(avctx, width, height)); -} - ssize_t HTTPD::Stream::reader_callback_thunk(void *cls, uint64_t pos, char *buf, size_t max) { HTTPD::Stream *stream = (HTTPD::Stream *)cls; @@ -240,7 +119,10 @@ ssize_t HTTPD::Stream::reader_callback_thunk(void *cls, uint64_t pos, char *buf, ssize_t HTTPD::Stream::reader_callback(uint64_t pos, char *buf, size_t max) { unique_lock lock(buffer_mutex); - has_buffered_data.wait(lock, [this]{ return !buffered_data.empty(); }); + has_buffered_data.wait(lock, [this]{ return should_quit || !buffered_data.empty(); }); + if (should_quit) { + return 0; + } ssize_t ret = 0; while (max > 0 && !buffered_data.empty()) { @@ -250,6 +132,7 @@ ssize_t HTTPD::Stream::reader_callback(uint64_t pos, char *buf, size_t max) if (max >= len) { // Consume the entire (rest of the) string. memcpy(buf, s.data() + used_of_buffered_data, len); + buf += len; ret += len; max -= len; buffered_data.pop_front(); @@ -257,6 +140,7 @@ ssize_t HTTPD::Stream::reader_callback(uint64_t pos, char *buf, size_t max) } else { // We don't need the entire string; just use the first part of it. memcpy(buf, s.data() + used_of_buffered_data, max); + buf += max; used_of_buffered_data += max; ret += max; max = 0; @@ -266,22 +150,61 @@ ssize_t HTTPD::Stream::reader_callback(uint64_t pos, char *buf, size_t max) return ret; } -void HTTPD::Stream::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts) +void HTTPD::Stream::add_data(const char *buf, size_t buf_size, HTTPD::Stream::DataType data_type) { - mux->add_packet(pkt, pts, dts); -} + if (buf_size == 0) { + return; + } + if (data_type == DATA_TYPE_KEYFRAME) { + seen_keyframe = true; + } else if (data_type == DATA_TYPE_OTHER && !seen_keyframe) { + // Start sending only once we see a keyframe. + return; + } -int HTTPD::Stream::write_packet_thunk(void *opaque, uint8_t *buf, int buf_size) -{ - HTTPD::Stream *stream = (HTTPD::Stream *)opaque; - return stream->write_packet(buf, buf_size); + unique_lock lock(buffer_mutex); + + if (framing == FRAMING_METACUBE) { + metacube2_block_header hdr; + memcpy(hdr.sync, METACUBE2_SYNC, sizeof(hdr.sync)); + hdr.size = htonl(buf_size); + int flags = 0; + if (data_type == DATA_TYPE_HEADER) { + flags |= METACUBE_FLAGS_HEADER; + } else if (data_type == DATA_TYPE_OTHER) { + flags |= METACUBE_FLAGS_NOT_SUITABLE_FOR_STREAM_START; + } + hdr.flags = htons(flags); + hdr.csum = htons(metacube2_compute_crc(&hdr)); + buffered_data.emplace_back((char *)&hdr, sizeof(hdr)); + } + buffered_data.emplace_back(buf, buf_size); + + // Send a Metacube2 timestamp every keyframe. + if (framing == FRAMING_METACUBE && data_type == DATA_TYPE_KEYFRAME) { + timespec now; + clock_gettime(CLOCK_REALTIME, &now); + + metacube2_timestamp_packet packet; + packet.type = htobe64(METACUBE_METADATA_TYPE_ENCODER_TIMESTAMP); + packet.tv_sec = htobe64(now.tv_sec); + packet.tv_nsec = htobe64(now.tv_nsec); + + metacube2_block_header hdr; + memcpy(hdr.sync, METACUBE2_SYNC, sizeof(hdr.sync)); + hdr.size = htonl(sizeof(packet)); + hdr.flags = htons(METACUBE_FLAGS_METADATA); + hdr.csum = htons(metacube2_compute_crc(&hdr)); + buffered_data.emplace_back((char *)&hdr, sizeof(hdr)); + buffered_data.emplace_back((char *)&packet, sizeof(packet)); + } + + has_buffered_data.notify_all(); } -int HTTPD::Stream::write_packet(uint8_t *buf, int buf_size) +void HTTPD::Stream::stop() { unique_lock lock(buffer_mutex); - buffered_data.emplace_back((char *)buf, buf_size); - has_buffered_data.notify_all(); - return buf_size; + should_quit = true; + has_buffered_data.notify_all(); } -