X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=httpd.cpp;h=1e4005453fc5aad0fe02600106f22f85ac7005d3;hb=24bffd6b8467cd91764514e8f666fe68849dfc45;hp=487d429c5d5b1e49df0a4e019f954823ffb2ceee;hpb=95ad88db99ba896fb5bfcfd5c221f735a3e34b7e;p=nageru

diff --git a/httpd.cpp b/httpd.cpp
index 487d429..1e40054 100644
--- a/httpd.cpp
+++ b/httpd.cpp
@@ -1,25 +1,17 @@
+#include <arpa/inet.h>
 #include <assert.h>
 #include <microhttpd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-extern "C" {
-#include <libavcodec/avcodec.h>
-#include <libavutil/channel_layout.h>
-#include <libavutil/mathematics.h>
-#include <libavutil/mem.h>
-#include <libavutil/pixfmt.h>
-#include <libavutil/rational.h>
-#include <libavutil/samplefmt.h>
-}
-
 #include <vector>
 
 #include "httpd.h"
 
 #include "defs.h"
 #include "flags.h"
+#include "metacube2.h"
 #include "timebase.h"
 
 struct MHD_Connection;
@@ -27,8 +19,7 @@ struct MHD_Response;
 
 using namespace std;
 
-HTTPD::HTTPD(int width, int height)
-	: width(width), height(height)
+HTTPD::HTTPD()
 {
 }
 
@@ -42,11 +33,11 @@ void HTTPD::start(int port)
 	                 MHD_OPTION_END);
 }
 
-void HTTPD::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
+void HTTPD::add_data(const char *buf, size_t size, bool keyframe)
 {
 	unique_lock<mutex> lock(streams_mutex);
 	for (Stream *stream : streams) {
-		stream->add_packet(pkt, pts, dts);
+		stream->add_data(buf, size, keyframe ? Stream::DATA_TYPE_KEYFRAME : Stream::DATA_TYPE_OTHER);
 	}
 }
 
@@ -64,16 +55,16 @@ 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(global_flags.stream_mux_name.c_str(), nullptr, nullptr);
-	assert(oformat != nullptr);
-
-	// TODO: This is an ugly place to have this logic.
-	const int bit_rate = global_flags.stream_audio_codec_name.empty() ?
-		DEFAULT_AUDIO_OUTPUT_BIT_RATE :
-		global_flags.stream_audio_codec_bitrate;
+	// 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;
+	}
 
-	int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
-	HTTPD::Stream *stream = new HTTPD::Stream(oformat, width, height, time_base, bit_rate);
+	HTTPD::Stream *stream = new HTTPD::Stream(framing);
+	stream->add_data(header.data(), header.size(), Stream::DATA_TYPE_HEADER);
 	{
 		unique_lock<mutex> lock(streams_mutex);
 		streams.insert(stream);
@@ -83,6 +74,11 @@ 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);
 
@@ -117,25 +113,6 @@ void HTTPD::request_completed(struct MHD_Connection *connection, void **con_cls,
 	}
 }
 
-HTTPD::Stream::Stream(AVOutputFormat *oformat, int width, int height, int time_base, int bit_rate)
-{
-	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);
-
-	Mux::Codec video_codec;
-	if (global_flags.uncompressed_video_to_http) {
-		video_codec = Mux::CODEC_NV12;
-	} else {
-		video_codec = Mux::CODEC_H264;
-	}
-
-	avctx->flags = AVFMT_FLAG_CUSTOM_IO;
-
-	mux.reset(new Mux(avctx, width, height, video_codec, time_base, bit_rate));
-}
-
 ssize_t HTTPD::Stream::reader_callback_thunk(void *cls, uint64_t pos, char *buf, size_t max)
 {
 	HTTPD::Stream *stream = (HTTPD::Stream *)cls;
@@ -173,22 +150,35 @@ 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)
-{
-	mux->add_packet(pkt, pts, dts);
-}
-
-int HTTPD::Stream::write_packet_thunk(void *opaque, uint8_t *buf, int buf_size)
+void HTTPD::Stream::add_data(const char *buf, size_t buf_size, HTTPD::Stream::DataType data_type)
 {
-	HTTPD::Stream *stream = (HTTPD::Stream *)opaque;
-	return stream->write_packet(buf, buf_size);
-}
+	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(uint8_t *buf, int buf_size)
-{
 	unique_lock<mutex> lock(buffer_mutex);
-	buffered_data.emplace_back((char *)buf, buf_size);
+
+	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);
 	has_buffered_data.notify_all();	
-	return buf_size;
 }