ffmpeg.c
资源名称:tcpmp.rar [点击查看]
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上传日期:2014-04-03
资源大小:7248k
文件大小:15k
源码类别:
Windows CE
开发平台:
C/C++
- /*****************************************************************************
- *
- * This program is free software ; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id: ffmpeg.c 603 2006-01-19 13:00:33Z picard $
- *
- * The Core Pocket Media Player
- * Copyright (c) 2004-2005 Gabor Kovacs
- *
- ****************************************************************************/
- #include "../common/common.h"
- #include "ffmpeg.h"
- #undef malloc
- #undef realloc
- #undef free
- #include "libavcodec/avcodec.h"
- typedef struct ffmpeg_video
- {
- codec Codec;
- buffer Buffer;
- AVCodecContext *Context;
- AVFrame *Picture;
- AVRational Aspect;
- int PixelFormat;
- int SkipToKey;
- int DropToKey;
- bool_t Dropping;
- int CodecId;
- tick_t FrameTime;
- AVPaletteControl Palette;
- } ffmpeg_video;
- typedef struct codecinfo
- {
- int Id;
- int CodecId;
- const tchar_t* Name;
- const tchar_t* ContentType;
- } codecinfo;
- #define FFMPEG_VIDEO_CLASS FOURCC('F','F','M','V')
- static const codecinfo Info[] =
- {
- {FOURCC('F','C','I','N'),CODEC_ID_CINEPAK,T("FFmpeg Cinepak"),
- T("vcodec/cvid")},
- {FOURCC('F','T','S','C'),CODEC_ID_TSCC,T("FFmpeg TSCC"),
- T("vcodec/tscc")},
- {FOURCC('F','M','S','0'),CODEC_ID_MSVIDEO1,T("FFmpeg Microsoft Video 1"),
- T("vcodec/cram,vcodec/msvc")},
- {FOURCC('F','M','P','G'),CODEC_ID_MPEG2VIDEO,T("FFmpeg MPEG1/2"),
- T("vcodec/mpeg,vcodec/mpg1")},
- {FOURCC('F','2','6','3'),CODEC_ID_H263,T("FFmpeg h.263"),
- T("vcodec/h263,vcodec/u263,vcodec/x263,vcodec/s263")},
- {FOURCC('F','A','V','C'),CODEC_ID_H264,T("FFmpeg AVC"),
- T("vcodec/avc1,vcodec/h264,vcodec/x264,vcodec/vssh")},
- {FOURCC('F','W','V','1'),CODEC_ID_WMV1,T("FFmpeg WMV1"),
- T("vcodec/wmv1")},
- {FOURCC('F','W','V','2'),CODEC_ID_WMV2,T("FFmpeg WMV2"),
- T("vcodec/wmv2")},
- // {FOURCC('F','W','V','3'),CODEC_ID_WMV3,T("FFmpeg WMV3"),
- // T("vcodec/wmv3")},
- // {FOURCC('F','S','V','1'),CODEC_ID_SVQ1,T("FFmpeg SVQ1"),
- // T("vcodec/svq1")},
- {FOURCC('F','S','V','3'),CODEC_ID_SVQ3,T("FFmpeg SVQ3"),
- T("vcodec/svq3")},
- {FOURCC('F','M','S','1'),CODEC_ID_MSMPEG4V1,T("FFmpeg MSMPEG1"),
- T("vcodec/mpg4,vcodec/mp41,vcodec/div1")},
- {FOURCC('F','M','S','2'),CODEC_ID_MSMPEG4V2,T("FFmpeg MSMPEG2"),
- T("vcodec/mp42,vcodec/div2")},
- {FOURCC('F','M','S','3'),CODEC_ID_MSMPEG4V3,T("FFmpeg MSMPEG3"),
- T("vcodec/mp43,vcodec/mpg3,vcodec/div3,vcodec/div4,vcodec/div5,vcodec/div6,vcodec/ap41,vcodec/col0,vcodec/col1,vcodec/3ivd")},
- {FOURCC('F','M','P','4'),CODEC_ID_MPEG4,T("FFmpeg MPEG4"),
- T("vcodec/divx,vcodec/dx50,vcodec/xvid,vcodec/mrs2,vcodec/3iv2,vcodec/mp4s,vcodec/pm4v,vcodec/blz0,vcodec/ump4,vcodec/m4s2,vcodec/mp4v,vcodec/fmp4")},
- {0},
- };
- static bool_t BuildOutputFormat(ffmpeg_video* p)
- {
- int pix_fmt = p->Context->pix_fmt;
- if (pix_fmt<0)
- pix_fmt = PIX_FMT_YUV420P; // is this needed?
- PacketFormatClear(&p->Codec.Out.Format);
- p->Codec.Out.Format.Type = PACKET_VIDEO;
- switch (pix_fmt)
- {
- case PIX_FMT_YUV410P:
- p->Codec.Out.Format.Format.Video.Pixel.Flags = PF_YUV410;
- break;
- case PIX_FMT_YUV420P:
- p->Codec.Out.Format.Format.Video.Pixel.Flags = PF_YUV420;
- break;
- case PIX_FMT_BGR24:
- DefaultRGB(&p->Codec.Out.Format.Format.Video.Pixel,24,8,8,8,0,0,0);
- break;
- case PIX_FMT_RGBA32:
- DefaultRGB(&p->Codec.Out.Format.Format.Video.Pixel,32,8,8,8,0,0,0);
- break;
- case PIX_FMT_RGB555:
- DefaultRGB(&p->Codec.Out.Format.Format.Video.Pixel,16,5,5,5,0,0,0);
- break;
- case PIX_FMT_PAL8:
- p->Codec.Out.Format.Format.Video.Pixel.Flags = PF_PALETTE;
- p->Codec.Out.Format.Format.Video.Pixel.BitCount = 8;
- p->Codec.Out.Format.Format.Video.Pixel.Palette = p->Codec.In.Format.Format.Video.Pixel.Palette;
- break;
- default:
- return 0;
- }
- p->Aspect = p->Context->sample_aspect_ratio;
- p->Codec.Out.Format.Format.Video.Aspect = p->Codec.In.Format.Format.Video.Aspect;
- if (p->Context->sample_aspect_ratio.num>0 && !p->Codec.Out.Format.Format.Video.Aspect)
- p->Codec.Out.Format.Format.Video.Aspect = Scale(ASPECT_ONE,p->Context->sample_aspect_ratio.num,p->Context->sample_aspect_ratio.den);
- p->Codec.In.Format.Format.Video.Width = p->Codec.Out.Format.Format.Video.Width = p->Context->width;
- p->Codec.In.Format.Format.Video.Height = p->Codec.Out.Format.Format.Video.Height = p->Context->height;
- if (p->Picture->linesize[0])
- p->Codec.Out.Format.Format.Video.Pitch = p->Picture->linesize[0];
- else
- DefaultPitch(&p->Codec.Out.Format.Format.Video);
- p->PixelFormat = p->Context->pix_fmt;
- if (p->Context->bit_rate > 0 && p->Context->bit_rate < 100000000)
- p->Codec.In.Format.ByteRate = p->Context->bit_rate/8;
- if (p->Context->time_base.num > 0)
- {
- p->Codec.In.Format.PacketRate.Num = p->Context->time_base.den;
- p->Codec.In.Format.PacketRate.Den = p->Context->time_base.num;
- p->FrameTime = Scale(TICKSPERSEC,p->Codec.In.Format.PacketRate.Den,p->Codec.In.Format.PacketRate.Num);
- }
- else
- p->FrameTime = TIME_UNKNOWN;
- //ShowMessage("","%d %d %d",p->Context->pix_fmt,p->Context->width,p->Context->height);
- return 1;
- }
- static void UpdateSettings(ffmpeg_video* p)
- {
- p->Context->skip_loop_filter = QueryAdvanced(ADVANCED_NODEBLOCKING)? AVDISCARD_ALL : AVDISCARD_DEFAULT;
- }
- static int UpdateInput( ffmpeg_video* p )
- {
- if (p->Context)
- avcodec_close(p->Context);
- av_free(p->Context);
- av_free(p->Picture);
- p->Context = NULL;
- p->Picture = NULL;
- BufferClear(&p->Buffer);
- if (p->Codec.In.Format.Type == PACKET_VIDEO)
- {
- AVCodec *Codec;
- const codecinfo *i;
- for (i=Info;i->Id;++i)
- if (i->Id == p->Codec.Node.Class)
- break;
- if (!i->Id)
- return ERR_INVALID_DATA;
- Codec = avcodec_find_decoder(i->CodecId);
- if (!Codec)
- return ERR_INVALID_DATA;
- p->Context = avcodec_alloc_context();
- p->Picture = avcodec_alloc_frame();
- if (!p->Context || !p->Picture)
- return ERR_OUT_OF_MEMORY;
- if ((p->Codec.In.Format.Format.Video.Pixel.Flags & PF_FRAGMENTED) &&
- (Codec->capabilities & CODEC_CAP_TRUNCATED))
- p->Context->flags|= CODEC_FLAG_TRUNCATED;
- UpdateSettings(p);
- p->Context->palctrl = NULL;
- p->Context->bit_rate = 0;
- p->Context->extradata = p->Codec.In.Format.Extra;
- p->Context->extradata_size = p->Codec.In.Format.ExtraLength;
- p->Context->width = p->Codec.In.Format.Format.Video.Width;
- p->Context->height = p->Codec.In.Format.Format.Video.Height;
- p->Context->bits_per_sample = p->Codec.In.Format.Format.Video.Pixel.BitCount;
- if (p->Codec.In.Format.Format.Video.Pixel.Palette &&
- p->Codec.In.Format.Format.Video.Pixel.BitCount<=8)
- {
- int i,n = 1 << p->Codec.In.Format.Format.Video.Pixel.BitCount;
- for (i=0;i<n;++i)
- p->Palette.palette[i] = INT32LE(p->Codec.In.Format.Format.Video.Pixel.Palette[i].v);
- p->Palette.palette_changed = 1;
- p->Context->palctrl = &p->Palette;
- }
- p->CodecId = i->CodecId;
- if (avcodec_open(p->Context,Codec)<0)
- {
- // avoid calling avcodec_close at next UpdateInput
- av_free(p->Context);
- p->Context = NULL;
- return ERR_INVALID_DATA;
- }
- if (!BuildOutputFormat(p))
- return ERR_INVALID_DATA;
- p->SkipToKey = 1;
- p->DropToKey = 1;
- p->Dropping = 0;
- }
- return ERR_NONE;
- }
- static INLINE bool_t SupportDrop( ffmpeg_video* p )
- {
- return p->CodecId != CODEC_ID_H264 && (!p->Context->has_b_frames || p->CodecId != CODEC_ID_SVQ3);
- }
- static int Process( ffmpeg_video* p, const packet* Packet, const flowstate* State )
- {
- int Picture;
- int Len;
- if (Packet)
- {
- if (State->DropLevel)
- {
- if (State->DropLevel>1)
- {
- p->SkipToKey = 1;
- p->DropToKey = 1;
- p->Dropping = 1;
- p->Context->hurry_up = 5;
- }
- else
- p->Context->hurry_up = 1;
- if (!SupportDrop(p))
- p->Context->hurry_up = 0;
- }
- else
- p->Context->hurry_up = 0;
- if (!Packet->Key && p->DropToKey)
- {
- if (p->Dropping)
- {
- flowstate DropState;
- DropState.CurrTime = TIME_UNKNOWN;
- DropState.DropLevel = 1;
- p->Codec.Out.Process(p->Codec.Out.Pin.Node,NULL,&DropState);
- }
- if (SupportDrop(p))
- avcodec_flush_buffers(p->Context);
- return ERR_DROPPING;
- }
- if (p->DropToKey)
- p->DropToKey = 0;
- if (Packet->RefTime >= 0)
- p->Codec.Packet.RefTime = Packet->RefTime;
- BufferPack(&p->Buffer,0);
- BufferWrite(&p->Buffer,Packet->Data[0],Packet->Length,2048);
- }
- else
- {
- if (p->FrameTime<0)
- p->Codec.Packet.RefTime = TIME_UNKNOWN;
- else
- if (!State)
- p->Codec.Packet.RefTime += p->FrameTime;
- if (!State && p->Buffer.WritePos == p->Buffer.ReadPos)
- return ERR_NEED_MORE_DATA;
- }
- if (p->SkipToKey)
- p->Picture->pict_type = 0;
- Len = avcodec_decode_video(p->Context, p->Picture, &Picture, p->Buffer.Data + p->Buffer.ReadPos,
- p->Buffer.WritePos - p->Buffer.ReadPos);
- if (Len < 0)
- {
- BufferDrop(&p->Buffer);
- return ERR_INVALID_DATA;
- }
- p->Buffer.ReadPos += Len;
- if (!Picture)
- {
- if (p->SkipToKey>1 && p->Picture->pict_type)
- --p->SkipToKey;
- return ERR_NEED_MORE_DATA;
- }
- if (p->SkipToKey>0)
- {
- if ((!p->Picture->key_frame && p->Picture->pict_type) || p->SkipToKey>1)
- {
- if (p->SkipToKey>1)
- --p->SkipToKey;
- if (p->Dropping)
- {
- flowstate DropState;
- DropState.CurrTime = TIME_UNKNOWN;
- DropState.DropLevel = 1;
- p->Codec.Out.Process(p->Codec.Out.Pin.Node,NULL,&DropState);
- }
- return ERR_DROPPING;
- }
- p->SkipToKey = 0;
- }
- if (p->Context->pix_fmt != p->PixelFormat ||
- p->Context->sample_aspect_ratio.num != p->Aspect.num ||
- p->Context->sample_aspect_ratio.den != p->Aspect.den ||
- p->Context->width != p->Codec.Out.Format.Format.Video.Width ||
- p->Context->height != p->Codec.Out.Format.Format.Video.Height ||
- p->Picture->linesize[0] != p->Codec.Out.Format.Format.Video.Pitch)
- {
- if (!BuildOutputFormat(p))
- return ERR_INVALID_DATA;
- ConnectionUpdate(&p->Codec.Node,CODEC_OUTPUT,p->Codec.Out.Pin.Node,p->Codec.Out.Pin.No);
- }
- p->Codec.Packet.Data[0] = p->Picture->data[0];
- p->Codec.Packet.Data[1] = p->Picture->data[1];
- p->Codec.Packet.Data[2] = p->Picture->data[2];
- return ERR_NONE;
- }
- static int ReSend( ffmpeg_video* p )
- {
- flowstate State;
- if (p->SkipToKey || !p->Codec.Out.Pin.Node || !p->Picture->data[0])
- return ERR_NEED_MORE_DATA;
- State.CurrTime = TIME_RESEND;
- State.DropLevel = 0;
- p->Codec.Packet.RefTime = TIME_UNKNOWN;
- p->Codec.Packet.Data[0] = p->Picture->data[0];
- p->Codec.Packet.Data[1] = p->Picture->data[1];
- p->Codec.Packet.Data[2] = p->Picture->data[2];
- return p->Codec.Out.Process(p->Codec.Out.Pin.Node,&p->Codec.Packet,&State);
- }
- static int Flush( ffmpeg_video* p )
- {
- p->SkipToKey = 1;
- p->DropToKey = 1;
- p->Dropping = 0;
- if (p->Context)
- {
- if (SupportDrop(p))
- avcodec_flush_buffers(p->Context);
- if (p->Context->has_b_frames && p->Context->frame_number>0)
- p->SkipToKey = 2;
- }
- BufferDrop(&p->Buffer);
- return ERR_NONE;
- }
- static int Set(ffmpeg_video* p, int No, const void* Data, int Size)
- {
- int Result = CodecSet(&p->Codec,No,Data,Size);
- switch (No)
- {
- case NODE_SETTINGSCHANGED:
- if (p->Context)
- UpdateSettings(p);
- break;
- }
- return Result;
- }
- static int Create( ffmpeg_video* p )
- {
- p->Codec.Node.Set = (nodeset)Set;
- p->Codec.Process = (packetprocess)Process;
- p->Codec.UpdateInput = (nodefunc)UpdateInput;
- p->Codec.Flush = (nodefunc)Flush;
- p->Codec.ReSend = (nodefunc)ReSend;
- p->Codec.NoHardDropping = 1;
- return ERR_NONE;
- }
- static const nodedef FFMPEGVideo =
- {
- sizeof(ffmpeg_video)|CF_ABSTRACT,
- FFMPEG_VIDEO_CLASS,
- CODEC_CLASS,
- PRI_DEFAULT,
- (nodecreate)Create,
- NULL,
- };
- void FFMPEG_Init()
- {
- nodedef Def;
- const codecinfo* i;
- avcodec_init();
- register_avcodec(&mpeg1video_decoder);
- register_avcodec(&mpeg2video_decoder);
- register_avcodec(&mpegvideo_decoder);
- // register_avcodec(&svq1_decoder);
- register_avcodec(&svq3_decoder);
- register_avcodec(&h263_decoder);
- register_avcodec(&mpeg4_decoder);
- register_avcodec(&msmpeg4v1_decoder);
- register_avcodec(&msmpeg4v2_decoder);
- register_avcodec(&msmpeg4v3_decoder);
- register_avcodec(&wmv1_decoder);
- register_avcodec(&wmv2_decoder);
- // register_avcodec(&wmv3_decoder);
- register_avcodec(&h264_decoder);
- register_avcodec(&cinepak_decoder);
- register_avcodec(&msvideo1_decoder);
- register_avcodec(&tscc_decoder);
- NodeRegisterClass(&FFMPEGVideo);
- memset(&Def,0,sizeof(Def));
- for (i=Info;i->Id;++i)
- {
- StringAdd(1,i->Id,NODE_NAME,i->Name);
- StringAdd(1,i->Id,NODE_CONTENTTYPE,i->ContentType);
- Def.Class = i->Id;
- Def.ParentClass = FFMPEG_VIDEO_CLASS;
- Def.Priority = PRI_DEFAULT-10; // do not override ARM optimized codecs by default
- Def.Flags = 0; // parent size
- if ((i->CodecId == CODEC_ID_WMV1 && QueryPlatform(PLATFORM_WMPVERSION)!=10) || //WMP10 RGB only output -> prefer ffmpeg
- i->CodecId == CODEC_ID_WMV2 ||
- i->CodecId == CODEC_ID_WMV3)
- Def.Priority -= 100; // prefer DMO, WMV2 J-frames are not supported by ffmpeg, WMMX support by MS codecs are faster
- NodeRegisterClass(&Def);
- }
- NodeRegisterClass(&WMVF);
- }
- void FFMPEG_Done()
- {
- NodeUnRegisterClass(FFMPEG_VIDEO_CLASS);
- NodeUnRegisterClass(WMVF_ID);
- av_free_static();
- }
- //only function needed from imgconvert.c
- void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
- {
- switch (pix_fmt)
- {
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUVJ420P:
- *h_shift = 1;
- *v_shift = 1;
- break;
- case PIX_FMT_YUVJ422P:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV422:
- case PIX_FMT_UYVY422:
- *h_shift = 1;
- *v_shift = 0;
- break;
- case PIX_FMT_YUV410P:
- *h_shift = 2;
- *v_shift = 2;
- break;
- case PIX_FMT_YUV411P:
- case PIX_FMT_UYVY411:
- *h_shift = 2;
- *v_shift = 0;
- break;
- default:
- *h_shift = 0;
- *v_shift = 0;
- break;
- }
- }
- int avpicture_fill(AVPicture *picture, uint8_t *ptr, int pix_fmt, int width, int height)
- {
- int h,v;
- int size = width*height;
- int sizeuv;
- switch (pix_fmt)
- {
- case PIX_FMT_YUV410P:
- case PIX_FMT_YUV411P:
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV444P:
- avcodec_get_chroma_sub_sample(pix_fmt,&h,&v);
- sizeuv = RSHIFT_ROUND(width,h)*RSHIFT_ROUND(height,v);
- picture->data[0] = ptr;
- picture->data[1] = ptr + size;
- picture->data[2] = ptr + size + sizeuv;
- picture->linesize[0] = width;
- picture->linesize[1] = RSHIFT_ROUND(width,h);
- picture->linesize[2] = RSHIFT_ROUND(width,h);
- return size + 2*sizeuv;
- default:
- assert(0);
- return -1;
- }
- }
- int avpicture_get_size(int pix_fmt, int width, int height)
- {
- AVPicture i;
- return avpicture_fill(&i, NULL, pix_fmt, width, height);
- }