videobuffers.cpp File Reference

#include <chrono>
#include <thread>
#include "libmythbase/compat.h"
#include "libmythbase/mythconfig.h"
#include "libmythbase/mythlogging.h"
#include "fourcc.h"
#include "mythcodecid.h"
#include "videobuffers.h"
#include "libavcodec/avcodec.h"

Include dependency graph for videobuffers.cpp:

Go to the source code of this file.

Functions
static void	ReleaseDecoderResources (MythVideoFrame *Frame, std::vector< AVBufferRef * > &Discards)
	Store AVBufferRef's for later disposal. More...
static void	DoDiscard (const std::vector< AVBufferRef * > &Discards)
static unsigned long long	to_bitmap (const frame_queue_t &Queue, int Num)
static int	DebugNum (const MythVideoFrame *Frame)
const QString &	DebugString (const MythVideoFrame *Frame, bool Short)
const QString &	DebugString (uint FrameNum, bool Short)

Variables
static constexpr uint16_t	TRY_LOCK_SPINS { 2000 }
static constexpr uint16_t	TRY_LOCK_SPINS_BEFORE_WARNING { 9999 }
static constexpr std::chrono::milliseconds	TRY_LOCK_SPIN_WAIT { 1ms }
int	next_dbg_str = 0
static constexpr size_t	DBG_STR_ARR_SIZE { 40 }
const std::array< const QString, DBG_STR_ARR_SIZE >	dbg_str_arr
const std::array< const QString, DBG_STR_ARR_SIZE >	dbg_str_arr_short
std::map< const MythVideoFrame *, int >	dbg_str

Function Documentation

DebugNum()

static int DebugNum ( const MythVideoFrame *  Frame )

static

Definition at line 1089 of file videobuffers.cpp.

Referenced by DebugString(), and to_bitmap().

DebugString() [1/2]

const QString & DebugString	(	const MythVideoFrame *	Frame,
		bool	Short
	)

Definition at line 1097 of file videobuffers.cpp.

Referenced by VideoBuffers::DiscardAndRecreate(), VideoBuffers::DiscardFrames(), and VideoBuffers::GetNextFreeFrameInternal().

DebugString() [2/2]

const QString & DebugString	(	uint	FrameNum,
		bool	Short
	)

Definition at line 1104 of file videobuffers.cpp.

DoDiscard()

static void DoDiscard ( const std::vector< AVBufferRef * > &  Discards )

inlinestatic

Definition at line 56 of file videobuffers.cpp.

Referenced by VideoBuffers::ClearAfterSeek(), VideoBuffers::DeLimboFrame(), VideoBuffers::DiscardAndRecreate(), VideoBuffers::DiscardFrame(), VideoBuffers::DiscardFrames(), VideoBuffers::DiscardPauseFrames(), and VideoBuffers::DoneDisplayingFrame().

ReleaseDecoderResources()

static void ReleaseDecoderResources ( MythVideoFrame *  Frame, std::vector< AVBufferRef * > &  Discards  )

inlinestatic

Store AVBufferRef's for later disposal.

Note

Releasing hardware buffer references will at some point trigger the deletion of AVBufferPool's, which in turn trigger the release of hardware contexts and OpenGL interops - which may trigger a blocking callback. We cannot hold the videobuffer lock while doing this as there are numerous playback paths that can request the video buffer lock while the decoder thread is blocking. So store the buffers and release once the master videobuffer lock is released.

Definition at line 37 of file videobuffers.cpp.

Referenced by VideoBuffers::ClearAfterSeek(), VideoBuffers::DeLimboFrame(), VideoBuffers::DiscardAndRecreate(), VideoBuffers::DiscardFrame(), VideoBuffers::DiscardFrames(), VideoBuffers::DiscardPauseFrames(), and VideoBuffers::DoneDisplayingFrame().

to_bitmap()

static unsigned long long to_bitmap ( const frame_queue_t &  Queue, int  Num  )

static

Definition at line 1109 of file videobuffers.cpp.

Referenced by VideoBuffers::GetStatus().

Variable Documentation

dbg_str

std::map<const MythVideoFrame *, int> dbg_str

Definition at line 1087 of file videobuffers.cpp.

Referenced by DebugNum().

dbg_str_arr

const std::array<const QString,DBG_STR_ARR_SIZE> dbg_str_arr

Initial value:

{
    "A       ",    " B      ",    "  C     ",    "   D    ",
    "    E   ",    "     F  ",    "      G ",    "       H", 
    "a       ",    " b      ",    "  c     ",    "   d    ",
    "    e   ",    "     f  ",    "      g ",    "       h", 
    "0       ",    " 1      ",    "  2     ",    "   3    ",
    "    4   ",    "     5  ",    "      6 ",    "       7", 
    "I       ",    " J      ",    "  K     ",    "   L    ",
    "    M   ",    "     N  ",    "      O ",    "       P", 
    "i       ",    " j      ",    "  k     ",    "   l    ",
    "    m   ",    "     n  ",    "      o ",    "       p", 
}

Definition at line 1065 of file videobuffers.cpp.

Referenced by DebugString().

dbg_str_arr_short

const std::array<const QString,DBG_STR_ARR_SIZE> dbg_str_arr_short

Initial value:

{
    "A","B","C","D","E","F","G","H", 
    "a","b","c","d","e","f","g","h", 
    "0","1","2","3","4","5","6","7", 
    "I","J","K","L","M","N","O","P", 
    "i","j","k","l","m","n","o","p", 
}

Definition at line 1078 of file videobuffers.cpp.

Referenced by DebugString().

DBG_STR_ARR_SIZE

constexpr size_t DBG_STR_ARR_SIZE { 40 }

staticconstexpr

Definition at line 1064 of file videobuffers.cpp.

Referenced by DebugString().

next_dbg_str

int next_dbg_str = 0

Definition at line 26 of file videobuffers.cpp.

Referenced by DebugNum().

TRY_LOCK_SPIN_WAIT

constexpr std::chrono::milliseconds TRY_LOCK_SPIN_WAIT { 1ms }

staticconstexpr

Definition at line 24 of file videobuffers.cpp.

Referenced by VideoBuffers::GetNextFreeFrame().

TRY_LOCK_SPINS

constexpr uint16_t TRY_LOCK_SPINS { 2000 }

staticconstexpr

Definition at line 22 of file videobuffers.cpp.

Referenced by VideoBuffers::GetNextFreeFrame().

TRY_LOCK_SPINS_BEFORE_WARNING

constexpr uint16_t TRY_LOCK_SPINS_BEFORE_WARNING { 9999 }

staticconstexpr

Definition at line 23 of file videobuffers.cpp.

Referenced by VideoBuffers::GetNextFreeFrame().