X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fffmpeg_capture.h;h=122bf86726ba4cb6d73a70a0ca81166d6e7d7431;hb=a0e57ec99e9dfdd7e79bcf21e8c996dc43b6cb49;hp=6084b68f398dd6a15727fc380c3ef1207a818db6;hpb=6cf87ad853439f8565c575fb29dc539a15fdba87;p=nageru

diff --git a/nageru/ffmpeg_capture.h b/nageru/ffmpeg_capture.h
index 6084b68..122bf86 100644
--- a/nageru/ffmpeg_capture.h
+++ b/nageru/ffmpeg_capture.h
@@ -24,7 +24,12 @@
 // see the subtitle until the next frame.
 
 #include <assert.h>
+#include <stddef.h>
 #include <stdint.h>
+#include <time.h>
+
+#include <atomic>
+#include <chrono>
 #include <functional>
 #include <map>
 #include <memory>
@@ -32,12 +37,15 @@
 #include <set>
 #include <string>
 #include <thread>
+#include <vector>
 
 #include <movit/effect.h>
 #include <movit/ycbcr.h>
 
 extern "C" {
+#include <libavutil/frame.h>
 #include <libswresample/swresample.h>
+#include <libavutil/channel_layout.h>
 #include <libavutil/pixfmt.h>
 #include <libavutil/rational.h>
 #include <libavutil/samplefmt.h>
@@ -57,6 +65,10 @@ class FFmpegCapture : public bmusb::CaptureInterface
 {
 public:
 	FFmpegCapture(const std::string &filename, unsigned width, unsigned height);
+#ifdef HAVE_SRT
+	// Takes ownership of the SRT client socket.
+	FFmpegCapture(int srt_sock, const std::string &stream_id);
+#endif
 	~FFmpegCapture();
 
 	void set_card_index(int card_index)
@@ -155,9 +167,13 @@ public:
 			std::placeholders::_11);
 	}
 
-	// FFmpegCapture-specific callback that gives the raw audio.
-	typedef std::function<void(const AVPacket *pkt, const AVRational timebase)> audio_callback_t;
-	void set_audio_callback(audio_callback_t callback)
+	// FFmpegCapture-specific callback that gives the raw audio/video.
+	typedef std::function<void(const AVPacket *pkt, const AVRational timebase)> packet_callback_t;
+	void set_video_callback(packet_callback_t callback)
+	{
+		video_callback = callback;
+	}
+	void set_audio_callback(packet_callback_t callback)
 	{
 		audio_callback = callback;
 	}
@@ -195,6 +211,11 @@ public:
 		has_dequeue_callbacks = true;
 	}
 
+	void set_card_disconnected_callback(bmusb::card_disconnected_callback_t callback)
+	{
+		card_disconnected_callback = callback;
+	}
+
 	std::string get_description() const override
 	{
 		return description;
@@ -203,7 +224,8 @@ public:
 	void configure_card() override;
 	void start_bm_capture() override;
 	void stop_dequeue_thread() override;
-	bool get_disconnected() const override { return false; }  // We never unplug.
+	bool get_disconnected() const override { return disconnected; }  // Only if play_once == true.
+	int get_srt_sock() const { return srt_sock; }
 
 	std::map<uint32_t, bmusb::VideoMode> get_available_video_modes() const override;
 	void set_video_mode(uint32_t video_mode_id) override {}  // Ignore.
@@ -249,13 +271,22 @@ private:
 	bmusb::VideoFormat construct_video_format(const AVFrame *frame, AVRational video_timebase);
 	UniqueFrame make_video_frame(const AVFrame *frame, const std::string &pathname, bool *error);
 
-	static int interrupt_cb_thunk(void *unique);
+	static int interrupt_cb_thunk(void *opaque);
 	int interrupt_cb();
 
+#ifdef HAVE_SRT
+	static int read_srt_thunk(void *opaque, uint8_t *buf, int buf_size);
+	int read_srt(uint8_t *buf, int buf_size);
+#endif
+
+	inline unsigned frame_width(const AVFrame *frame) const;
+	inline unsigned frame_height(const AVFrame *frame) const;
+
 	mutable std::mutex filename_mu;
 	std::string description, filename;
+	int srt_sock = -1;
 	uint16_t timecode = 0;
-	unsigned width, height;
+	unsigned width, height;  // 0 means keep input size.
 	bmusb::PixelFormat pixel_format = bmusb::PixelFormat_8BitBGRA;
 	movit::YCbCrFormat current_frame_ycbcr_format;
 	bool running = false;
@@ -265,16 +296,25 @@ private:
 	std::atomic<bool> should_interrupt{false};
 	bool last_frame_was_connected = true;
 
+	// TODO: Replace with std::optional if we go C++17.
+	bool frame_timeout_valid = false;  // If true, will time out any reads after ten seconds.
+	std::chrono::steady_clock::time_point frame_timeout_started;  // Only relevant if frame_timeout_valid == true.
+
 	bool has_dequeue_callbacks = false;
 	std::function<void()> dequeue_init_callback = nullptr;
 	std::function<void()> dequeue_cleanup_callback = nullptr;
 
+	bmusb::card_disconnected_callback_t card_disconnected_callback = nullptr;
+	bool play_once = false;  // End thread after playing. Only for SRT, since the socket is ephemeral.
+	std::atomic<bool> disconnected{false};
+
 	bmusb::FrameAllocator *video_frame_allocator = nullptr;
 	bmusb::FrameAllocator *audio_frame_allocator = nullptr;
 	std::unique_ptr<bmusb::FrameAllocator> owned_video_frame_allocator;
 	std::unique_ptr<bmusb::FrameAllocator> owned_audio_frame_allocator;
 	frame_callback_t frame_callback = nullptr;
-	audio_callback_t audio_callback = nullptr;
+	packet_callback_t video_callback = nullptr;
+	packet_callback_t audio_callback = nullptr;
 
 	SwsContextWithDeleter sws_ctx;
 	int sws_last_width = -1, sws_last_height = -1, sws_last_src_format = -1;
@@ -298,14 +338,19 @@ private:
 	// Audio resampler.
 	SwrContext *resampler = nullptr;
 	AVSampleFormat last_src_format, last_dst_format;
-	int64_t last_channel_layout;
+	AVChannelLayout last_channel_layout;
 	int last_sample_rate;
 
 	// Subtitles (no decoding done, really).
 	bool has_last_subtitle = false;
 	std::string last_subtitle;
 
-	movit::RGBTriplet last_neutral_color;
+	movit::RGBTriplet last_neutral_color{1.0f, 1.0f, 1.0f};
+
+	// Used for suppressing repeated warnings. Reset when a video starts playing.
+	// -1 is strictly speaking outside the range of the enum, but hopefully, it will be alright.
+	AVColorSpace last_colorspace = static_cast<AVColorSpace>(-1);
+	AVChromaLocation last_chroma_location = static_cast<AVChromaLocation>(-1);
 };
 
 #endif  // !defined(_FFMPEG_CAPTURE_H)