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uFFMPG.pas
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uFFMPG.pas
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unit uFFMPG;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
System.Classes, Vcl.Graphics,
Vcl.ExtCtrls,Math,System.SyncObjs,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, FFTypes, FFUtils, System.DateUtils,
libavcodec, libavcodec_avfft, libavdevice, libavfilter, libavfilter_avcodec,
libavfilter_buffersink, libavfilter_buffersrc, libavfilter_formats,
libavformat, libavformat_avio, libavformat_url, libavutil,
libavutil_audio_fifo, libavutil_avstring, libavutil_bprint, libavutil_buffer,
libavutil_channel_layout, libavutil_common, libavutil_cpu, libavutil_dict,
libavutil_display, libavutil_error, libavutil_eval, libavutil_fifo,
libavutil_file, libavutil_frame, libavutil_imgutils, libavutil_log,
libavutil_mathematics, libavutil_md5, libavutil_mem, libavutil_motion_vector,
libavutil_opt, libavutil_parseutils, libavutil_pixdesc, libavutil_pixfmt,
libavutil_rational, libavutil_samplefmt, libavutil_time, libavutil_timestamp,
libswresample, libswscale, sdl2, {sdl, {uResourcePaths,} System.Threading,
FMX.Graphics, FMX.Types, FMX.Canvas.D2D;
// , SDL2_Frame;
resourcestring
SListIndexError = 'List index out of bounds (%d)';
type
TPosition = packed record
TimeInt: Int64;
ts: Int64;
Time: TTime;
end;
TOnFrameHook = procedure(frame: PAVFrame; Buffer: Pointer;
bufferSize: Integer) of object;
TMyFFMpegDisplay = class(TCustomPanel) // class helper for TPanel
private
FSDLPantalla: PSDLPantalla;
FFlags: UInt32;
FRenderInfo: PSDL_RendererInfo;
MooseTexture: PSDL_Texture;
FProportionally: Boolean;
Timer: TTimer;
FDeley: Byte;
procedure OnTimer(sendder: TObject);
procedure SetDeley(const Value: Byte);
procedure Resize(Sender:TObject);
protected
video_clock:Double;
frame_last_pts:int64;
frame_last_delay:Double;
CS:TCriticalSection;
procedure CreateWnd; override;
procedure DestroyWnd; override;
Function CaslcSize(Sourse:TSDL_Rect):TSDL_Rect;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
Function DisplayFrame(var AVFrame: TAVFrame; AVStream: PAVStream; DeleyTime:Cardinal = 0): Boolean;
Function DisplayInit(AVStream: PAVStream): Boolean;
Function DisplayFree: Boolean;
Procedure UpdateRender;
property DeleyTime:Byte read FDeley write SetDeley default 25;
published
property Anchors;
property OnContextPopup;
property PopupMenu;
property OnResize;
property OnDblClick;
property OnClick;
property OnKeyUp;
property OnKeyPress;
property OnKeyDown;
property Align;
Property Proportionally: Boolean read FProportionally Write FProportionally
default True;
end;
function DurationToStr(ADuration: Int64): string;
Type
TStream = Packed record
stream: PAVStream;
data: array [0 .. 3] of PByte;
linesize: array [0 .. 3] of Integer;
bufsize: Integer;
end;
TBitmapInfoHeader = Packed Record
Size:Int32;
w,h:Int32;
Color_Planes:Int16;
Bit_Per_Pixel:Int16;
Compression:Int32;
ImageSize:Int32;
ResolutionHorizontal:Int32;
ResolutionVertical:Int32;
ColorPlate:Int32;
ColorUsed:Int32;
RedMask,
GreenMask,
BlueMask,
AlphaMask:Int32;
LCS_WINDOWS_COLOR_SPACE:Int32;
Color_Space_endpoints: Array [0..35] of byte;
RedGamma:Int32;
GreenGamma:Int32;
BlueGamma:Int32;
End;
TBmpHead = packed record
Name:Array [0..1] of AnsiChar;
Size:Int32;
Reserved: Array [0..3] of byte;
StartAdress:Int32;
FormatHead:TBitmapInfoHeader;
Class Function Init:TBmpHead; Static;
Class Function InitSize(w,h, DataSize:Int32):TBmpHead; Static;
end;
TOnHookFrame = procedure (Frame:TAVFrame; Paket:TAVPacket; Steam:TAVStream)of object;
TMyFFMpegCore = class (TComponent)
private
FOnHookFrame: TOnHookFrame;
function GetStream(Index: Integer): TStream;
protected
FSeekTarget: Integer;
FStartPosition: TPosition;
FEndposition: TPosition;
FCurrentPosition: TPosition;
FFMpedDisplay: TMyFFMpegDisplay;
FormatContext: PAVFormatContext;
PixelFormat: TAVPixelFormat;
Steams: Array of TStream;
video_stream_idx: Integer;
//[Volatile]
//frame: PAVFrame;//TAVFrame;
video_frame_count: Integer;
audio_frame_count: Integer;
got_Frame:PInteger;
//Tasks: Array of ITask;
FStop:Boolean;
CS:TCriticalSection;
public
[Volatile]
AVPacket: TAVPacket;
AVFrame:TAVFrame;
function OpenFile(FileName:string):Boolean;
Function CloseFile:Boolean;
constructor Create(AOwner: TComponent); override;
Function ReadFrame:Cardinal;
Function ReadFrameTry:Cardinal;
Function DecodePaket(SteamID:Integer;VAR got_Frame:PInteger):Cardinal;
Procedure GoToFrameToTS(SteamID:Integer;TS:Int64);
property AVFormatContext:PAVFormatContext read FormatContext;
property AVStream[Index: Integer]: TStream read GetStream; default;
destructor Destroy; override;
published
property Display:TMyFFMpegDisplay read FFMpedDisplay Write FFMpedDisplay;
property StartPosition: TPosition read FStartPosition;
Property EndPosition: TPosition read FEndposition;
Property CurrentPosition: TPosition read FCurrentPosition;
Property VideoStreamIndex:integer Read video_stream_idx default -1;
property OnHookFrame:TOnHookFrame read FOnHookFrame Write FOnHookFrame;
end;
TMyFFMpeg = class(TMyFFMpegCore)
private
procedure OnStatusThead(var PlayStop:Boolean; var Close:Boolean);
procedure OnReadPaket(var Deley:Cardinal);
procedure OnSeek(var PlayStop:Boolean; var Close:Boolean);
procedure OnDecodeVIDEO(var Deley:Cardinal);
procedure OnDecodeAUDIO(var Deley:Cardinal);
procedure OnRunVIDEO(var Deley:Cardinal);
procedure OnRunAUDIO(var Deley:Cardinal);
procedure OnDelay(var TotalDelay:Cardinal);
protected
Task:ITask;
public
class var MyDecodeThead:Pointer;//TThread;
Class Function SaveFrameAsBitmap(Frame:TAVFrame; Steam:TAVStream; var Pict: Vcl.Graphics.TBitmap):Boolean;
Procedure Play;
Procedure Stop;
function GetStatusPlay:Boolean;
destructor Destroy; override;
constructor Create(AOwner: TComponent); override;
published
Property Seek:Integer read FSeekTarget Write FSeekTarget default -1;
end;
procedure Register;
implementation
uses uFFMpegThead;
procedure Register;
begin
RegisterComponents('My_FFMPEG',[TMyFFMpegDisplay]);
RegisterComponents('My_FFMPEG',[TMyFFMpeg]);
end;
function DurationToStr(ADuration: Int64): string;
var
hours, mins, secs, us: Integer;
begin
if ADuration <> AV_NOPTS_VALUE then
begin
secs := (ADuration + 5000) div AV_TIME_BASE;
us := (ADuration + 5000) mod AV_TIME_BASE;
mins := secs div 60;
secs := secs mod 60;
hours := mins div 60;
mins := mins mod 60;
Result := String(Format('%.2d:%.2d:%.2d.%.3d', [hours, mins, secs,
(1000 * us) div 1000000]));
end
else
Result := 'N/A';
end;
{ TFFMpedDisplay }
function TMyFFMpegDisplay.CaslcSize(Sourse: TSDL_Rect): TSDL_Rect;
var rect:TSDL_Rect;
p:Double;
begin
if not Assigned(FSDLPantalla.Renderer) then Exit;
SDL_RenderGetViewport(FSDLPantalla.Renderer,@rect);
Result.x := 0;
Result.y := 0;
p := (rect.w * 100) / Sourse.w;
Result.w := round((Sourse.w * p) / 100);
Result.h := round((Sourse.h * p) / 100);
if Result.h > rect.h then
begin
p := (rect.h * 100) / Result.h;
Result.w := round((Result.w * p) / 100);
Result.h := round((Result.h * p) / 100);
end;
end;
constructor TMyFFMpegDisplay.Create(AOwner: TComponent);
begin
inherited;
CS:=TCriticalSection.Create;
FDeley:=20;
frame_last_pts:=0;
FProportionally:=True;
end;
procedure TMyFFMpegDisplay.CreateWnd;
begin
inherited;
if SDL_WasInit(SDL_INIT_VIDEO) <> SDL_INIT_VIDEO then
SDL_InitSubSystem(SDL_INIT_VIDEO);
New(FSDLPantalla);
FSDLPantalla.Window := SDL_CreateWindowFrom(Pointer(Self.Handle));
if FSDLPantalla.Window <> nil then
begin
FSDLPantalla.Renderer := SDL_CreateRenderer(FSDLPantalla^.Window, -1, 0);
// no forzamos ningъn tipo de render (0) para que el sistema coja el que pueda Hard-Soft
if FSDLPantalla.Renderer <> nil then
begin
New(FRenderInfo);
if SDL_GetRendererInfo(FSDLPantalla^.Renderer, FRenderInfo) = 0 then
begin
FSDLPantalla.max_texture_width := FRenderInfo^.max_texture_width;
FSDLPantalla.max_texture_height := FRenderInfo^.max_texture_height;
FSDLPantalla.hardware :=
((FRenderInfo.Flags and SDL_RENDERER_ACCELERATED) > 0);
FSDLPantalla.render_name := FRenderInfo^.name;
// PAnsiChar(FRenderInfo.name);
SDL_ShowWindow(FSDLPantalla.Window);
if SDL_SetRenderDrawColor(FSDLPantalla^.Renderer, 0, 0, 0,
SDL_ALPHA_OPAQUE) = 0 then
begin
if SDL_RenderFillRect(FSDLPantalla^.Renderer, nil) = 0 then
FFlags := SDL_GetWindowFlags(FSDLPantalla.Window)
else
ShowMessage('Error clearing render context');
end
else
ShowMessage('Error setting render draw color');
end
else
ShowMessage('Error getting information about rendering context');
end
else
ShowMessage('Error crearting SDL2 Render');
end
else
ShowMessage('Error creating SDL2 Window.');
Self.OnResize:=Resize;
Timer := TTimer.Create(Self);
Timer.OnTimer := OnTimer;
Timer.Interval := 20; // обновление полотна
Timer.Enabled := True;
end;
destructor TMyFFMpegDisplay.Destroy;
begin
Timer.Enabled := False;
inherited;
end;
procedure TMyFFMpegDisplay.DestroyWnd;
begin
//FreeAndNil(Timer);
Timer.Enabled := False;
if FSDLPantalla.Renderer <> nil then
begin
SDL_DestroyRenderer(FSDLPantalla.Renderer);
FSDLPantalla.Renderer := nil;
end;
if FSDLPantalla.Window <> nil then
begin
SDL_DestroyWindow(FSDLPantalla.Window);
FSDLPantalla.Window := nil;
end;
Dispose(FSDLPantalla);
inherited;
end;
function TMyFFMpegDisplay.DisplayFrame(VAR AVFrame: TAVFrame;
AVStream: PAVStream; DeleyTime:Cardinal): Boolean;
var
res: SInt32;
ImgConvContext: PSwsContext;
Img: PAVFrame;
Ibmp_Size: Integer;
ibmp_Buff: PByte;
pix_F: TAVPixelFormat;
rect2, rect3: TSDL_Rect;
p: Real;
TicB,TicE:Cardinal;
rect: TSDL_Rect;
begin
try
pix_F := AV_PIX_FMT_BGR0;
Result := True;
// проверяем была ли инициализация
if (not assigned(FSDLPantalla.Window.surface)) OR (not assigned(MooseTexture))
then
begin
Result := False;
Exit;
end;
// Задаём размеры прямоугольника в дальнейшем по мену будем считать преобразование размера кадра
rect.x := 0;
rect.y := 0;
rect.w := AVStream.codec.width; // шырена
rect.h := AVStream.codec.height; // высота
rect2:=CaslcSize(rect);
// Очистка от предыдущий ошибок
Img := av_frame_alloc(); // Создаём пространство для конвертированного кадра
ticB:=GetTickCount;
// получаем контекст для преобразования в RGBы
ImgConvContext := nil;
ImgConvContext := sws_getContext(AVStream.codec.width, AVStream.codec.height,
AVStream.codec.pix_fmt, rect2.W{AVStream.codec.width}, rect2.h{AVStream.codec.height}, pix_F, SWS_BILINEAR, nil,
nil, nil);
// Формируем буфер для картинки RGB
Ibmp_Size := avpicture_get_size(pix_F, rect2.w{AVStream.codec.width}, rect2.H{AVStream.codec.height});
ibmp_Buff := nil;
ibmp_Buff := av_malloc(Ibmp_Size * SizeOf(Byte));
res := avpicture_fill(PAVPicture(Img), ibmp_Buff, pix_F, rect2.w{AVStream.codec.width},
rect2.h{AVFrame.height});
// конвертируем формат пикселя в RGB
if Assigned(ImgConvContext) then
res := sws_scale(ImgConvContext, @AVFrame.Data, @AVFrame.linesize, 0,
AVStream.codec.height, @Img.Data, @Img.linesize);
TicE:=GetTickCount;
try
// рисуем картинку на текстуре
res := SDL_UpdateTexture(MooseTexture, @rect2, @Img.Data[0]^,
Img.linesize[0]);
if res < 0 then
Result := False;
SDL_RenderClear(FSDLPantalla^.Renderer);
// копируем картинку с текстуры в рендер
if FProportionally then begin
res := SDL_RenderCopy(FSDLPantalla^.Renderer, MooseTexture,
nil, // С какой области скопировать кадр
@rect2 // На какой размер растянуть кадр
);
end else begin
res := SDL_RenderCopy(FSDLPantalla^.Renderer, MooseTexture,
@rect,// С какой области скопировать кадр
nil // На какой размер растянуть кадр
);
end;
if res < 0 then
Result := False;
// Отображаем картинку в рендере
if AVStream.avg_frame_rate.den > 0 then
res:=Trunc(av_q2d(AVStream.avg_frame_rate))-((TicE-TicB)+DeleyTime);
if res < 0 then res:=0;
sleep(res);
frame_last_pts:=AVFrame.pts;
except
on E: Exception do
begin
Result := False;
end;
end;
finally
// очистка памяти от временного мусора
av_free(ibmp_Buff);
//av_freep(ibmp_Buff);
sws_freeContext(ImgConvContext);
//av_frame_unref(@Img);
av_frame_free(@Img);
Application.ProcessMessages;
SDL_RenderPresent(FSDLPantalla^.Renderer);
end;
end;
function TMyFFMpegDisplay.DisplayFree: Boolean;
begin Result:=True;
try
if assigned(MooseTexture) then begin
SDL_DestroyTexture(MooseTexture);
MooseTexture:=nil;
end;
if assigned(FSDLPantalla.Window.surface) then begin
SDL_FreeSurface(FSDLPantalla.Window.surface);
FSDLPantalla.Window.surface:=nil;
end;
except
Result:=False;
end;
end;
function TMyFFMpegDisplay.DisplayInit(AVStream: PAVStream): Boolean;
var
rect, rect2:TSDL_Rect;
begin Result:=True;
try
rect.x := 0;
rect.y := 0;
rect.w := AVStream.codec.width; // шырена
rect.h := AVStream.codec.height; // высота
rect2:=CaslcSize(rect);
if assigned(FSDLPantalla.Window.surface) then begin
if
(FSDLPantalla.Window.surface.w <> rect2.w{AVStream.codec.width}) or
(FSDLPantalla.Window.surface.h <> rect2.h{AVStream.codec.height}) then
DisplayFree;
end;
// Создаём текстуру для отображения кадра
if not assigned(FSDLPantalla.Window.surface) then
FSDLPantalla.Window.surface := SDL_CreateRGBSurface(0, rect2.w{AVStream.codec.width},
rect2.h{AVStream.codec.height}, 24, $000000FF, $0000FF00, $00FF0000, $00000000);
if not assigned(MooseTexture) then
MooseTexture := SDL_CreateTextureFromSurface(FSDLPantalla.Renderer,
FSDLPantalla.Window.surface);
except
Result:=False;
end;
end;
procedure TMyFFMpegDisplay.OnTimer(sendder: TObject);
begin
//SDL_RenderPresent(FSDLPantalla^.Renderer);
end;
procedure TMyFFMpegDisplay.Resize(Sender: TObject);
begin
end;
procedure TMyFFMpegDisplay.SetDeley(const Value: Byte);
begin
if Value < 20 then begin
FDeley := 20;
Exit;
end;
if Value > 30 then begin
FDeley := 30;
Exit;
end;
FDeley := Value;
end;
procedure TMyFFMpegDisplay.UpdateRender;
begin
if Assigned(FSDLPantalla^.Renderer) then
SDL_RenderPresent(FSDLPantalla^.Renderer);
end;
{ TMyFFMpegCore }
function TMyFFMpegCore.CloseFile: Boolean;
begin
avformat_close_input(@FormatContext);
end;
constructor TMyFFMpegCore.Create(AOwner: TComponent);
begin
inherited;
av_register_all();
avcodec_register_all();
av_init_packet(@AVPacket);
//av_frame_unref(frame);
AVPacket.Data := nil;
AVPacket.size := 0;
New(got_Frame);
end;
function TMyFFMpegCore.DecodePaket(SteamID: Integer;
var got_Frame: PInteger): Cardinal;
var TicB,TicE:Cardinal;
ret:Integer;
pts: Int64;
begin
//if not Assigned(frame) then Frame := av_frame_alloc();
(* decode video frame *)
TicB:=GetTickCount;
ret := avcodec_decode_video2(Steams[SteamID].stream^.codec, @AVFrame{@frame}, got_frame, @AVPacket);
if ret < 0 then
begin
Result := ret;
raise Exception.Create('Error decoding video frame (' + string(av_err2str(ret)) + ')');
end;
TicE:=GetTickCount;
if got_frame^ <> 0 then begin
if ((AVPacket.dts = AV_NOPTS_VALUE) and assigned(AVFrame.opaque) and (Int64(AVFrame.opaque^) <> AV_NOPTS_VALUE)) then
begin
pts := Int64(AVFrame.opaque^);
end
else if (AVPacket.dts <> AV_NOPTS_VALUE) then
begin
pts := AVPacket.dts
end else pts := 0;
//FCurrentPosition.TimeInt := round(AVFrame.pts{pts} * av_q2d(Steams[SteamID].stream^.time_base));
FCurrentPosition.TimeInt := AVFrame.pts{pts} * Steams[SteamID].stream^.time_base.den;
FCurrentPosition.ts := AVFrame.pts;{pts};
FCurrentPosition.Time := UnixToDateTime(FCurrentPosition.TimeInt);
end;
Result:=TicE-TicB;
end;
destructor TMyFFMpegCore.Destroy;
begin
//if Assigned(frame) then av_free(frame);
Dispose(got_Frame);
inherited;
end;
function TMyFFMpegCore.GetStream(Index: Integer): TStream;
begin
if Cardinal(Index) >= Cardinal(High(Steams)) then
raise EListError.CreateFmt(LoadResString(@SListIndexError), [Index]) at ReturnAddress;
Result := Steams[Index];
end;
procedure TMyFFMpegCore.GoToFrameToTS(SteamID:Integer;TS:Int64);
var
iSeekFlag, ret: Integer;
iSeekTarget: Int64;
iSuccess: Integer;
begin
iSeekTarget := ts*1000;
try
avcodec_flush_buffers(Steams[SteamID].stream.codec);
iSeekTarget := av_rescale_q(iSeekTarget, AV_TIME_BASE_Q, Steams[SteamID].stream.time_base);
iSeekFlag := 0;//AVSEEK_FLAG_BACKWARD;// or AVSEEK_FLAG_ANY or AVSEEK_FLAG_FRAME;
if iSeekTarget > FEndposition.ts then iSeekTarget := ts;
iSuccess := avformat_seek_file(FormatContext,
video_stream_idx,
FStartPosition.ts,//0,
iSeekTarget,
FEndposition.ts,//Round(FormatContext.duration * av_q2d(Steams[SteamID].stream.time_base)),
iSeekFlag);
if iSuccess < 0 then raise Exception.Create('Error [av_seek_frame] Message:'+av_err2str(iSuccess));
except
end;
end;
function TMyFFMpegCore.OpenFile(FileName: String): Boolean;
var ret,i:Integer;
avdec: PAVCodec;
opts: PAVDictionary;
tmp:AnsiString;
VideoFile:PAnsiChar;
begin Result:=False; opts:=nil;
tmp:=AnsiString(FileName);
VideoFile:=PAnsiChar(tmp);
try
{ * open input file, and allocate format context * }
ret := avformat_open_input(@FormatContext, VideoFile, nil, nil);
if ret < 0 then
raise Exception.Create('Error Message:Could not open source file "' + FileName+'"'+sLineBreak+av_err2str(ret));
(* retrieve stream information *)
ret := avformat_find_stream_info(FormatContext, nil);
if ret < 0 then
raise Exception.Create('Error Message:Could not find stream information' + sLineBreak + av_err2str(ret));
// Dump information about file onto standard error
av_dump_format(FormatContext, 0, VideoFile, 0);
{* Поиск основного потока видео *}
ret := av_find_best_stream(FormatContext, AVMEDIA_TYPE_VIDEO, -1, -1, nil, 0);
if ret < 0 then
raise Exception.Create('Error Message:Could not find ' +
string(av_get_media_type_string(AVMEDIA_TYPE_VIDEO)) + ' stream in input file ''' +
String(FileName) + '''')
else video_stream_idx:=ret;
{* Открываем потоки файла в массив для быстрого доступа *}
SetLength(Steams,FormatContext.nb_streams);
for I := 0 to FormatContext.nb_streams-1 do begin
if PAVstream(PPtrIdx(FormatContext.streams, I))^.codec.codec_type = AVMEDIA_TYPE_VIDEO then begin
Steams[i].stream := PPtrIdx(FormatContext.streams, I);
avdec := avcodec_find_decoder(Steams[i].stream.codec.codec_id);
if not assigned(avdec) then
raise Exception.Create('Error Message:Failed to find ' + string(av_get_media_type_string(Steams[i].stream.codec.codec_type)) + ' codec');
(* Init the decoders, with or without reference counting *)
//av_dict_set(@opts, 'refcounted_frames', '1', 0); /// Test Function
ret := avcodec_open2(Steams[i].stream.codec, avdec, @opts);
if ret < 0 then
raise Exception.Create('Error Message:Failed to open ' + string(av_get_media_type_string(Steams[i].stream.codec.codec_type)) + ' codec');
ret := av_image_alloc(@Steams[i].data[0],@Steams[i].linesize[0],Steams[i].stream.codec.width,Steams[i].stream.codec.height,Steams[i].stream.codec.pix_fmt,1);
if ret < 0 then
raise Exception.Create ('Error Message:Could not allocate raw video buffer');
Steams[i].bufsize := ret;
end;
if PAVstream(PPtrIdx(FormatContext.streams, I))^.codec.codec_type = AVMEDIA_TYPE_AUDIO then begin
Steams[i].stream := PPtrIdx(FormatContext.streams, I);
avdec := avcodec_find_decoder(Steams[i].stream.codec.codec_id);
if not assigned(avdec) then
raise Exception.Create('Error Message:Failed to find ' + string(av_get_media_type_string(Steams[i].stream.codec.codec_type)) + ' codec');
ret := avcodec_open2(Steams[i].stream.codec, avdec, @opts);
if ret < 0 then
raise Exception.Create('Error Message:Failed to open ' + string(av_get_media_type_string(Steams[i].stream.codec.codec_type)) + ' codec');
//Steams[i].bufsize := ret;
end;
end;
{* инициализация глобальных переменных *}
FStartPosition.TimeInt :=
round(Steams[video_stream_idx].stream.start_time * av_q2d(Steams[video_stream_idx].stream.time_base));
FStartPosition.ts := Steams[video_stream_idx].stream.start_time;
FStartPosition.Time := UnixToDateTime(FStartPosition.TimeInt);
FCurrentPosition := FStartPosition;
if Steams[video_stream_idx].stream.nb_frames > 0 then begin
FEndposition.TimeInt :=
round(((Steams[video_stream_idx].stream.nb_frames * Steams[video_stream_idx].stream.r_frame_rate.den *
Steams[video_stream_idx].stream.time_base.den) / (Int64(Steams[video_stream_idx].stream.r_frame_rate.num) *
Steams[video_stream_idx].stream.time_base.num)) * av_q2d(Steams[video_stream_idx].stream.time_base));
FEndposition.ts :=
(((Steams[video_stream_idx].stream.nb_frames * Steams[video_stream_idx].stream.r_frame_rate.den *
Steams[video_stream_idx].stream.time_base.den) div (Int64(Steams[video_stream_idx].stream.r_frame_rate.num) *
Steams[video_stream_idx].stream.time_base.num)));
FEndposition.Time := UnixToDateTime(FEndposition.TimeInt);
end else begin
FEndposition.TimeInt:=FormatContext.duration;
FEndposition.ts := Round(FEndposition.TimeInt * av_q2d(Steams[video_stream_idx].stream.time_base));
FEndposition.Time := UnixToDateTime(FEndposition.TimeInt div AV_TIME_BASE);//FEndposition.ts);
end;
Result:=True;
finally
{* Освобождение и закрытие*}
end;
end;
function TMyFFMpegCore.ReadFrame: Cardinal;
var TicB1,TicE1:Cardinal;
ret:Integer;
begin
TicB1:=GetTickCount;
ret := av_read_frame(FormatContext, @AVPacket);
TicE1:=GetTickCount;
if ret < 0 then
begin
av_packet_unref(@AVPacket);
raise Exception.Create('Error Message:Can not read Frame ' + sLineBreak + av_err2str(ret));
end;
Result:=TicE1-TicB1;
end;
function TMyFFMpegCore.ReadFrameTry: Cardinal;
var TicB1,TicE1:Cardinal;
ret:Integer;
begin
TicB1:=GetTickCount;
ret := av_read_frame(FormatContext, @AVPacket);
TicE1:=GetTickCount;
if ret < 0 then
begin
av_packet_unref(@AVPacket);
//raise Exception.Create('Error Message:Can not read Frame ' + sLineBreak + av_err2str(ret));
end;
Result:=TicE1-TicB1;
end;
{ TMyFFMpeg }
constructor TMyFFMpeg.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FStop:=True;
Self.MyDecodeThead:=TMyDecodeThead.Create(False);
TMyDecodeThead(Self.MyDecodeThead).FreeOnTerminate:=False;
TMyDecodeThead(Self.MyDecodeThead).MyFFMpeg:=Self;
TMyDecodeThead(Self.MyDecodeThead).Priority:=tpNormal;
TMyDecodeThead(Self.MyDecodeThead).OnStatusThead:=OnStatusThead;
TMyDecodeThead(Self.MyDecodeThead).OnReadPaket:=OnReadPaket;
TMyDecodeThead(Self.MyDecodeThead).OnSeek:=OnSeek;
TMyDecodeThead(Self.MyDecodeThead).OnDecodeVIDEO:=OnDecodeVIDEO;
TMyDecodeThead(Self.MyDecodeThead).OnDecodeAUDIO:=OnDecodeAUDIO;
TMyDecodeThead(Self.MyDecodeThead).OnRunVIDEO:=OnRunVIDEO;
TMyDecodeThead(Self.MyDecodeThead).OnRunAUDIO:=OnRunAUDIO;
TMyDecodeThead(Self.MyDecodeThead).OnDelay:=OnDelay;
TMyDecodeThead(Self.MyDecodeThead).OnHookFrame:=FOnHookFrame;
end;
destructor TMyFFMpeg.Destroy;
begin
FStop:=True;
if Assigned(MyDecodeThead) then begin
TMyDecodeThead(Self.MyDecodeThead).Terminate;
end;
FreeAndNil(TMyDecodeThead(Self.MyDecodeThead));
Application.ProcessMessages;
inherited;
end;
function TMyFFMpeg.GetStatusPlay: Boolean;
begin
Result:=FStop;
end;
procedure TMyFFMpeg.OnDecodeAUDIO(var Deley: Cardinal);
begin
//not use
Deley:=0;
end;
procedure TMyFFMpeg.OnDecodeVIDEO(var Deley: Cardinal);
var TicB,TicE:Cardinal;
ret:Integer;
pts: Int64;
begin
//if not Assigned(frame) then Frame := av_frame_alloc();
(* decode video frame *)
if AVPacket.stream_index <> video_stream_idx then begin
Deley:=$FFFFFFFF;
exit;
end;
TicB:=GetTickCount;
ret := avcodec_decode_video2(Steams[AVPacket.stream_index].stream^.codec, @AVFrame{@frame}, got_frame, @AVPacket);
if ret < 0 then
begin
Deley := ret;
raise Exception.Create('Error decoding video frame (' + string(av_err2str(ret)) + ')');
end;
TicE:=GetTickCount;
if got_frame^ <> 0 then begin
if ((AVPacket.dts = AV_NOPTS_VALUE) and assigned(AVFrame.opaque) and (Int64(AVFrame.opaque^) <> AV_NOPTS_VALUE)) then
begin
pts := Int64(AVFrame.opaque^);
end
else if (AVPacket.dts <> AV_NOPTS_VALUE) then
begin
pts := AVPacket.dts
end else pts := 0;
//FCurrentPosition.TimeInt := round(AVFrame.pts{pts} * av_q2d(Steams[SteamID].stream^.time_base));
FCurrentPosition.TimeInt := AVFrame.pts{pts} * (Steams[AVPacket.stream_index].stream^.time_base.num div Steams[AVPacket.stream_index].stream^.time_base.den);
FCurrentPosition.ts := AVFrame.pts;{pts};
FCurrentPosition.Time := UnixToDateTime(FCurrentPosition.TimeInt);
if Assigned(Self.FOnHookFrame) then Self.FOnHookFrame(AVFrame,AVPacket,Steams[AVPacket.stream_index].stream^);
end;
Deley:=Deley+(TicE-TicB);
end;
procedure TMyFFMpeg.OnDelay(var TotalDelay: Cardinal);
begin
av_packet_unref(@AVPacket);
av_frame_unref(@AVFrame);
TotalDelay:=0;
end;
procedure TMyFFMpeg.OnReadPaket(var Deley:Cardinal);
var TicB1,TicE1:Cardinal;
ret:Integer;
begin
TicB1:=GetTickCount;
ret := av_read_frame(FormatContext, @AVPacket);
TicE1:=GetTickCount;
if ret < 0 then
begin
av_packet_unref(@AVPacket);
//raise Exception.Create('Error Message:Can not read Frame ' + sLineBreak + av_err2str(ret));
end;
Deley:=Deley+(TicE1-TicB1);
end;
procedure TMyFFMpeg.OnRunAUDIO(var Deley: Cardinal);
begin
//not use
end;
procedure TMyFFMpeg.OnRunVIDEO(var Deley: Cardinal);
var d:Int64;
begin
d:=Deley;
//d:=round(av_q2d(Steams[video_stream_idx].stream.avg_frame_rate)-Deley);
if d < 0 then Deley:=0
else Deley:=d;
if AVPacket.stream_index <> video_stream_idx then Exit;
if Assigned(FFMpedDisplay) then begin
FFMpedDisplay.DisplayInit(Steams[AVPacket.stream_index].stream);
FFMpedDisplay.DisplayFrame(AVFrame,Steams[AVPacket.stream_index].stream,Deley);
end;
av_frame_unref(@AVFrame);
end;
procedure TMyFFMpeg.OnSeek(var PlayStop, Close: Boolean);
begin
PlayStop:=FStop;
Close:=False;
if FSeekTarget > 0 then begin
GoToFrameToTS(video_stream_idx,FSeekTarget);
FSeekTarget:=-1;
end;
end;
procedure TMyFFMpeg.OnStatusThead(var PlayStop, Close: Boolean);
begin
PlayStop:=FStop;
Close:=False;
end;
procedure TMyFFMpeg.Play;
var got_frame:PInteger;
Delay:Cardinal;
Size:Int64;
begin
if not Assigned(FormatContext) then Exit;
if not Assigned(MyDecodeThead) then exit;
FStop:=False;
if not TMyDecodeThead(Self.MyDecodeThead).Started then TMyDecodeThead(Self.MyDecodeThead).Start;
end;
class function TMyFFMpeg.SaveFrameAsBitmap(Frame: TAVFrame; Steam:TAVStream;
var Pict: Vcl.Graphics.TBitmap): Boolean;
var
res: SInt32;
ImgConvContext: PSwsContext;
Img: PAVFrame;
Ibmp_Size: Integer;
ibmp_Buff: PByte;
pix_F: TAVPixelFormat;
TmpData:Pointer;
FileLine:TArray<Byte>;
Color: Array [0 .. 3] of Byte;
c1,c2,c3,c4:Byte;
RGB:TColor;
i, j, linesize: Integer;
BMPH:TBmpHead;
mem:TMemoryStream;
begin Result := False;
if Steam.codec.codec_type <> AVMEDIA_TYPE_VIDEO then Exit;
try
pix_F := AV_PIX_FMT_BGR0;
mem:=TMemoryStream.Create;
Img := av_frame_alloc(); // Создаём пространство для конвертированного кадра
ImgConvContext := nil;
ImgConvContext := sws_getContext(Steam.codec.width, Steam.codec.height,
Steam.codec.pix_fmt, Steam.codec.width, Steam.codec.height, pix_F, SWS_BILINEAR, nil,
nil, nil);
// Формируем буфер для картинки RGB
Ibmp_Size := avpicture_get_size(pix_F, Steam.codec.width, Steam.codec.height);
ibmp_Buff := nil;
ibmp_Buff := av_malloc(Ibmp_Size * SizeOf(Byte));
res := avpicture_fill(PAVPicture(Img), ibmp_Buff, pix_F, Steam.codec.width, Steam.codec.height);
// конвертируем формат пикселя в RGB
if Assigned(ImgConvContext) then
res := sws_scale(ImgConvContext, @Frame.Data, @Frame.linesize, 0, Steam.codec.height, @Img.Data, @Img.linesize);
TmpData:=@Img.Data[0]^;//Pointer(integer(@Img.Data[0]^)+(Img.linesize[0]*(Steam.codec.height)));
pict.PixelFormat := pf24bit;
Pict.Create;
Pict.width := Steam.codec.width;
Pict.height := Steam.codec.height;
SetLength(FileLine,Img.linesize[0]);
BMPH:=BMPH.InitSize(Steam.codec.width, Steam.codec.height,Ibmp_Size);
mem.Write(BMPH,SizeOf(BMPH));
try
for i := Steam.codec.height downto 1 do begin
FillChar(FileLine[0],Img.linesize[0],0);
linesize:=0;
TmpData:= Pointer(Integer(@Img.Data[0]^)+((Img.linesize[0]*i)-Img.linesize[0]));
repeat
c1:=Byte(PByte(Pointer(Integer(TmpData)+linesize))^);inc(linesize); //R
c2:=Byte(PByte(Pointer(Integer(TmpData)+linesize))^);inc(linesize); //G
c3:=Byte(PByte(Pointer(Integer(TmpData)+linesize))^);inc(linesize); //B
c4:=Byte(PByte(Pointer(Integer(TmpData)+linesize))^);inc(linesize); //A
FileLine[linesize-4]:=c1;
FileLine[linesize-3]:=c2;
FileLine[linesize-2]:=c3;
FileLine[linesize-1]:=c4;
until linesize >= Img.linesize[0];
mem.WriteData(FileLine,linesize);
end;
finally
mem.Position:=0;
//mem.SaveToFile('E:\Vidio\fr\'+IntToStr(Frame.pts)+'.bmp');
//mem.Position:=0;
Pict.LoadFromStream(mem);
FreeAndNil(mem);
end;
finally
// очистка памяти от временного мусора
av_free(ibmp_Buff);
sws_freeContext(ImgConvContext);
av_frame_free(@Img);
Application.ProcessMessages;
end;
end;
procedure TMyFFMpeg.Stop;
begin
FStop:=True;
end;
{ TBmpHead }
class function TBmpHead.Init: TBmpHead;
begin
Result.Name[0]:='B';
Result.Name[1]:='M';
Result.Reserved[0]:=0;
Result.Reserved[1]:=0;
Result.Reserved[2]:=0;
Result.Reserved[3]:=0;
Result.StartAdress:=14+SizeOf(TBitmapInfoHeader);
Result.FormatHead.Size:=SizeOf(TBitmapInfoHeader);
Result.FormatHead.Compression:=3;
Result.FormatHead.ResolutionHorizontal:=2835;
Result.FormatHead.ResolutionVertical:=2835;
Result.FormatHead.Bit_Per_Pixel:=32;
Result.FormatHead.ColorPlate:=0;
Result.FormatHead.ColorUsed:=0;
Result.FormatHead.Color_Planes:=1;
Result.FormatHead.RedMask :=$00FF0000;
Result.FormatHead.GreenMask :=$0000FF00;
Result.FormatHead.BlueMask :=$000000FF;
Result.FormatHead.AlphaMask :=$FF000000;
Result.FormatHead.LCS_WINDOWS_COLOR_SPACE:=$206E6957;
//Result.FormatHead.Color_Space_endpoints: Array [0..35] of byte;
Result.FormatHead.RedGamma:=0;
Result.FormatHead.GreenGamma:=0;
Result.FormatHead.BlueGamma:=0;
end;
class function TBmpHead.InitSize(w, h, DataSize: Int32): TBmpHead;
begin
Result:=TBmpHead.Init;
Result.FormatHead.w:=w;
Result.FormatHead.h:=h;
Result.FormatHead.ImageSize:=DataSize;
Result.Size:=Result.FormatHead.ImageSize+SizeOf(TBmpHead);
end;
end.