asapfmt.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:4k
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: asap.c 543 2006-01-07 22:06:24Z picard $
- *
- * The Core Pocket Media Player
- * Copyright (c) 2004-2005 Gabor Kovacs
- *
- ****************************************************************************/
- #include "../common/common.h"
- #include "asapfmt.h"
- #include "asap/asap.h"
- #define SAMPLE_RATE 44100
- #define BUFFER_SIZE 4096
- typedef struct asap
- {
- format_base Format;
- int Samples;
- int Total;
- int SamplePerBuffer;
- void* Buffer;
- } asap;
- static bool_t Load(asap* p)
- {
- format_reader* Reader = p->Format.Reader;
- char Path8[MAXPATH];
- tchar_t Path[MAXPATH];
- void* buf;
- int n = p->Format.FileSize;
- if (n<=0) n=65536;
- buf = malloc(n);
- if (!buf) return 0;
- Reader->Input->Get(Reader->Input,STREAM_URL,Path,sizeof(Path));
- TcsToStr(Path8,sizeof(Path8),Path);
- n = Reader->Read(Reader,buf,n);
- n = ASAP_Load(Path8, buf, n);
- free(buf);
- if (!n)
- return 0;
- ASAP_PlaySong(ASAP_GetDefSong());
- p->Samples = 0;
- return 1;
- }
- static int Init(asap* p)
- {
- format_stream* s;
- p->Format.HeaderLoaded = 1;
- p->Format.TimeStamps = 0;
- p->Format.Duration = 60*5*TICKSPERSEC;
- p->Total = Scale(p->Format.Duration,SAMPLE_RATE,TICKSPERSEC);
- ASAP_Initialize(SAMPLE_RATE, AUDIO_FORMAT_S16_NE, 3);
- if (!Load(p))
- return ERR_NOT_SUPPORTED;
- p->Buffer = malloc(BUFFER_SIZE);
- if (!p->Buffer)
- return ERR_OUT_OF_MEMORY;
- s = Format_AddStream(&p->Format,sizeof(format_stream));
- if (!s)
- return ERR_OUT_OF_MEMORY;
- PacketFormatClear(&s->Format);
- s->Format.Type = PACKET_AUDIO;
- s->Format.Format.Audio.Format = AUDIOFMT_PCM;
- s->Format.Format.Audio.Bits = 16;
- s->Format.Format.Audio.SampleRate = SAMPLE_RATE;
- s->Format.Format.Audio.Channels = ASAP_GetChannels();
- PacketFormatDefault(&s->Format);
- s->Fragmented = 1;
- s->DisableDrop = 1;
- p->SamplePerBuffer = BUFFER_SIZE/2/s->Format.Format.Audio.Channels;
- Format_PrepairStream(&p->Format,s);
- return ERR_NONE;
- }
- static void Done(asap* p)
- {
- free(p->Buffer);
- p->Buffer = NULL;
- }
- static int Seek(asap* p, tick_t Time, int FilePos, bool_t PrevKey)
- {
- if (Time>0 || FilePos>0)
- return ERR_NOT_SUPPORTED;
- if (Format_Seek(&p->Format,0,SEEK_SET) != ERR_NONE)
- return ERR_NOT_SUPPORTED;
- Load(p);
- return ERR_NONE;
- }
- static int Process(asap* p,format_stream* Stream)
- {
- int Result = ERR_NONE;
- if (Stream->Pending)
- {
- Result = Format_Send(&p->Format,Stream);
- if (Result == ERR_BUFFER_FULL || Result == ERR_SYNCED)
- return Result;
- }
- if (p->Samples >= p->Total)
- return Format_CheckEof(&p->Format,Stream);
- ASAP_Generate(p->Buffer, BUFFER_SIZE);
- Stream->Packet.RefTime = Scale(p->Samples,TICKSPERSEC,SAMPLE_RATE);
- Stream->Packet.Data[0] = p->Buffer;
- Stream->Packet.Length = BUFFER_SIZE;
- Stream->Pending = 1;
- p->Samples += p->SamplePerBuffer;
- Result = Format_Send(&p->Format,Stream);
- if (Result == ERR_BUFFER_FULL || Result == ERR_NEED_MORE_DATA)
- Result = ERR_NONE;
- return Result;
- }
- static int Create(asap* p)
- {
- p->Format.Init = (fmtfunc) Init;
- p->Format.Done = (fmtvoid) Done;
- p->Format.Seek = (fmtseek) Seek;
- p->Format.Process = (fmtstreamprocess) Process;
- p->Format.FillQueue = NULL;
- p->Format.ReadPacket = NULL;
- p->Format.Sended = NULL;
- return ERR_NONE;
- }
- static const nodedef ASAPDef =
- {
- sizeof(asap),
- ASAP_ID,
- FORMATBASE_CLASS,
- PRI_DEFAULT,
- (nodecreate)Create,
- };
- void ASAP_Init()
- {
- NodeRegisterClass(&ASAPDef);
- }
- void ASAP_Done()
- {
- NodeUnRegisterClass(ASAP_ID);
- }