#include #include #include #include "config.h" #include "mp_msg.h" #include "help_mp.h" extern int verbose; // defined in mplayer.c #include "stream.h" #include "demuxer.h" #include "codec-cfg.h" #include "stheader.h" #include "dec_audio.h" //========================================================================== #include "libao2/afmt.h" #include "dll_init.h" #include "mp3lib/mp3.h" #include "libac3/ac3.h" #include "alaw.h" #include "xa/xa_gsm.h" #include "ac3-iec958.h" #include "ima4.h" #include "cpudetect.h" /* used for ac3surround decoder - set using -channels option */ int audio_output_channels = 2; #ifdef USE_FAKE_MONO int fakemono=0; #endif #ifdef USE_DIRECTSHOW #include "loader/DirectShow/DS_AudioDec.h" #endif #ifdef HAVE_OGGVORBIS /* XXX is math.h really needed? - atmos */ #include #include typedef struct ov_struct_st { ogg_sync_state oy; /* sync and verify incoming physical bitstream */ ogg_stream_state os; /* take physical pages, weld into a logical stream of packets */ ogg_page og; /* one Ogg bitstream page. Vorbis packets are inside */ ogg_packet op; /* one raw packet of data for decode */ vorbis_info vi; /* struct that stores all the static vorbis bitstream settings */ vorbis_comment vc; /* struct that stores all the bitstream user comments */ vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ vorbis_block vb; /* local working space for packet->PCM decode */ } ov_struct_t; #endif #ifdef USE_LIBAVCODEC #ifdef USE_LIBAVCODEC_SO #include #else #include "libavcodec/avcodec.h" #endif static AVCodec *lavc_codec=NULL; static AVCodecContext lavc_context; extern int avcodec_inited; #endif #ifdef USE_LIBMAD #include static struct mad_stream mad_stream; static struct mad_frame mad_frame; static struct mad_synth mad_synth; // ensure buffer is filled with some data static void mad_prepare_buffer(sh_audio_t* sh_audio, struct mad_stream* ms, int length) { if(sh_audio->a_in_buffer_len < length) { int len = demux_read_data(sh_audio->ds, sh_audio->a_in_buffer+sh_audio->a_in_buffer_len, length-sh_audio->a_in_buffer_len); sh_audio->a_in_buffer_len += len; } } static void mad_postprocess_buffer(sh_audio_t* sh_audio, struct mad_stream* ms) { int delta = (unsigned char*)ms->next_frame - (unsigned char *)sh_audio->a_in_buffer; if(delta != 0) { sh_audio->a_in_buffer_len -= delta; memcpy(sh_audio->a_in_buffer, ms->next_frame, sh_audio->a_in_buffer_len); } } static inline signed short mad_scale(mad_fixed_t sample) { /* round */ sample += (1L << (MAD_F_FRACBITS - 16)); /* clip */ if (sample >= MAD_F_ONE) sample = MAD_F_ONE - 1; else if (sample < -MAD_F_ONE) sample = -MAD_F_ONE; /* quantize */ return sample >> (MAD_F_FRACBITS + 1 - 16); } #endif int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen); static sh_audio_t* dec_audio_sh=NULL; // AC3 decoder buffer callback: static void ac3_fill_buffer(uint8_t **start,uint8_t **end){ int len=ds_get_packet(dec_audio_sh->ds,start); //printf("\n",len); if(len<0) *start = *end = NULL; else *end = *start + len; } // MP3 decoder buffer callback: int mplayer_audio_read(char *buf,int size){ int len; len=demux_read_data(dec_audio_sh->ds,buf,size); return len; } int init_audio(sh_audio_t *sh_audio){ int driver=sh_audio->codec->driver; sh_audio->samplesize=2; #if WORDS_BIGENDIAN sh_audio->sample_format=AFMT_S16_BE; #else sh_audio->sample_format=AFMT_S16_LE; #endif sh_audio->samplerate=0; //sh_audio->pcm_bswap=0; sh_audio->o_bps=0; sh_audio->a_buffer_size=0; sh_audio->a_buffer=NULL; sh_audio->a_in_buffer_len=0; // setup required min. in/out buffer size: sh_audio->audio_out_minsize=8192;// default size, maybe not enough for Win32/ACM switch(driver){ case AFM_ACM: #ifndef USE_WIN32DLL mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_NoACMSupport); driver=0; #else // Win32 ACM audio codec: if(init_acm_audio_codec(sh_audio)){ sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec; sh_audio->channels=sh_audio->o_wf.nChannels; sh_audio->samplerate=sh_audio->o_wf.nSamplesPerSec; // if(sh_audio->audio_out_minsize>16384) sh_audio->audio_out_minsize=16384; // sh_audio->a_buffer_size=sh_audio->audio_out_minsize; // if(sh_audio->a_buffer_sizeaudio_out_minsize+MAX_OUTBURST) // sh_audio->a_buffer_size=sh_audio->audio_out_minsize+MAX_OUTBURST; } else { mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_ACMiniterror); driver=0; } #endif break; case AFM_DSHOW: #ifndef USE_DIRECTSHOW mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_NoDShowAudio); driver=0; #else // Win32 DShow audio codec: // printf("DShow_audio: channs=%d rate=%d\n",sh_audio->channels,sh_audio->samplerate); if(DS_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf)){ mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,sh_audio->codec->dll); driver=0; } else { sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec; sh_audio->channels=sh_audio->wf->nChannels; sh_audio->samplerate=sh_audio->wf->nSamplesPerSec; sh_audio->audio_in_minsize=2*sh_audio->wf->nBlockAlign; if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192; sh_audio->a_in_buffer_size=sh_audio->audio_in_minsize; sh_audio->a_in_buffer=malloc(sh_audio->a_in_buffer_size); sh_audio->a_in_buffer_len=0; sh_audio->audio_out_minsize=16384; } #endif break; case AFM_VORBIS: #ifndef HAVE_OGGVORBIS mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_NoOggVorbis); driver=0; #else /* OggVorbis audio via libvorbis, compatible with files created by nandub and zorannt codec */ sh_audio->audio_out_minsize=1024*4; // 1024 samples/frame #endif break; case AFM_PCM: case AFM_DVDPCM: case AFM_ALAW: // PCM, aLaw sh_audio->audio_out_minsize=2048; break; case AFM_AC3: // Dolby AC3 audio: // however many channels, 2 bytes in a word, 256 samples in a block, 6 blocks in a frame sh_audio->audio_out_minsize=audio_output_channels*2*256*6; break; case AFM_HWAC3: // Dolby AC3 audio: sh_audio->audio_out_minsize=4*256*6; sh_audio->sample_format = AFMT_AC3; break; case AFM_GSM: // MS-GSM audio codec: sh_audio->audio_out_minsize=4*320; break; case AFM_IMA4: // IMA-ADPCM 4:1 audio codec: sh_audio->audio_out_minsize=4096; //4*IMA4_SAMPLES_PER_BLOCK; sh_audio->ds->ss_div=IMA4_SAMPLES_PER_BLOCK; sh_audio->ds->ss_mul=IMA4_BLOCK_SIZE; break; case AFM_MPEG: // MPEG Audio: sh_audio->audio_out_minsize=4608; break; case AFM_FFMPEG: #ifndef USE_LIBAVCODEC mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_NoLAVCsupport); return 0; #else // FFmpeg Audio: sh_audio->audio_out_minsize=AVCODEC_MAX_AUDIO_FRAME_SIZE; break; #endif #ifdef USE_LIBMAD case AFM_MAD: printf(__FILE__ ":%d:mad: setting minimum outputsize\n", __LINE__); sh_audio->audio_out_minsize=4608; if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192; sh_audio->a_in_buffer_size=sh_audio->audio_in_minsize; sh_audio->a_in_buffer=malloc(sh_audio->a_in_buffer_size); sh_audio->a_in_buffer_len=0; break; #endif } if(!driver) return 0; // allocate audio out buffer: sh_audio->a_buffer_size=sh_audio->audio_out_minsize+MAX_OUTBURST; // worst case calc. mp_msg(MSGT_DECAUDIO,MSGL_V,"dec_audio: Allocating %d + %d = %d bytes for output buffer\n", sh_audio->audio_out_minsize,MAX_OUTBURST,sh_audio->a_buffer_size); sh_audio->a_buffer=malloc(sh_audio->a_buffer_size); if(!sh_audio->a_buffer){ mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_CantAllocAudioBuf); return 0; } memset(sh_audio->a_buffer,0,sh_audio->a_buffer_size); sh_audio->a_buffer_len=0; switch(driver){ #ifdef USE_WIN32DLL case AFM_ACM: { int ret=acm_decode_audio(sh_audio,sh_audio->a_buffer,4096,sh_audio->a_buffer_size); if(ret<0){ mp_msg(MSGT_DECAUDIO,MSGL_INFO,"ACM decoding error: %d\n",ret); driver=0; } sh_audio->a_buffer_len=ret; break; } #endif case AFM_PCM: { // AVI PCM Audio: WAVEFORMATEX *h=sh_audio->wf; sh_audio->i_bps=h->nAvgBytesPerSec; sh_audio->channels=h->nChannels; sh_audio->samplerate=h->nSamplesPerSec; sh_audio->samplesize=(h->wBitsPerSample+7)/8; switch(sh_audio->format){ // hardware formats: case 0x6: sh_audio->sample_format=AFMT_A_LAW;break; case 0x7: sh_audio->sample_format=AFMT_MU_LAW;break; case 0x11: sh_audio->sample_format=AFMT_IMA_ADPCM;break; case 0x50: sh_audio->sample_format=AFMT_MPEG;break; case 0x736F7774: sh_audio->sample_format=AFMT_S16_LE;sh_audio->codec->driver=AFM_DVDPCM;break; // case 0x2000: sh_audio->sample_format=AFMT_AC3; default: sh_audio->sample_format=(sh_audio->samplesize==2)?AFMT_S16_LE:AFMT_U8; } break; } case AFM_DVDPCM: { // DVD PCM Audio: sh_audio->channels=2; sh_audio->samplerate=48000; sh_audio->i_bps=2*2*48000; // sh_audio->pcm_bswap=1; break; } case AFM_AC3: { // Dolby AC3 audio: dec_audio_sh=sh_audio; // save sh_audio for the callback: ac3_config.fill_buffer_callback = ac3_fill_buffer; ac3_config.num_output_ch = audio_output_channels; ac3_config.flags = 0; if(gCpuCaps.hasMMX){ ac3_config.flags |= AC3_MMX_ENABLE; } if(gCpuCaps.has3DNow){ ac3_config.flags |= AC3_3DNOW_ENABLE; } ac3_init(); sh_audio->ac3_frame = ac3_decode_frame(); if(sh_audio->ac3_frame){ ac3_frame_t* fr=(ac3_frame_t*)sh_audio->ac3_frame; sh_audio->samplerate=fr->sampling_rate; sh_audio->channels=ac3_config.num_output_ch; // 1 frame: 6*256 samples 1 sec: sh_audio->samplerate samples //sh_audio->i_bps=fr->frame_size*fr->sampling_rate/(6*256); sh_audio->i_bps=fr->bit_rate*(1000/8); } else { driver=0; // bad frame -> disable audio } break; } case AFM_HWAC3: { unsigned char *buffer; struct hwac3info ai; int len, skipped; len = ds_get_packet(sh_audio->ds, &buffer); // maybe 1 packet is not enough, // at least for mpeg, PS packets contain about max. 2000 bytes of data. if(ac3_iec958_parse_syncinfo(buffer, len, &ai, &skipped) < 0) { mp_msg(MSGT_DECAUDIO,MSGL_ERR, MSGTR_AC3notvalid); driver = 0; break; } if(ai.samplerate != 48000) { mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_AC3only48k); driver = 0; break; } sh_audio->samplerate=ai.samplerate; sh_audio->samplesize=ai.framesize; sh_audio->channels=1; sh_audio->i_bps=ai.bitrate*(1000/8); sh_audio->ac3_frame=malloc(6144); sh_audio->o_bps=sh_audio->i_bps; // XXX FIXME!!! XXX break; } case AFM_ALAW: { // aLaw audio codec: sh_audio->channels=sh_audio->wf->nChannels; sh_audio->samplerate=sh_audio->wf->nSamplesPerSec; sh_audio->i_bps=sh_audio->channels*sh_audio->samplerate; break; } #ifdef USE_LIBAVCODEC case AFM_FFMPEG: { int x; mp_msg(MSGT_DECAUDIO,MSGL_V,"FFmpeg's libavcodec audio codec\n"); if(!avcodec_inited){ avcodec_init(); avcodec_register_all(); avcodec_inited=1; } lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh_audio->codec->dll); if(!lavc_codec){ mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh_audio->codec->dll); return 0; } memset(&lavc_context, 0, sizeof(lavc_context)); /* open it */ if (avcodec_open(&lavc_context, lavc_codec) < 0) { mp_msg(MSGT_DECAUDIO,MSGL_ERR, MSGTR_CantOpenCodec); return 0; } mp_msg(MSGT_DECAUDIO,MSGL_V,"INFO: libavcodec init OK!\n"); // Decode at least 1 byte: (to get header filled) x=decode_audio(sh_audio,sh_audio->a_buffer,1,sh_audio->a_buffer_size); if(x>0) sh_audio->a_buffer_len=x; #if 1 sh_audio->channels=lavc_context.channels; sh_audio->samplerate=lavc_context.sample_rate; sh_audio->i_bps=lavc_context.bit_rate/8; #else sh_audio->channels=sh_audio->wf->nChannels; sh_audio->samplerate=sh_audio->wf->nSamplesPerSec; sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec; #endif break; } #endif case AFM_GSM: { // MS-GSM audio codec: GSM_Init(); sh_audio->channels=sh_audio->wf->nChannels; sh_audio->samplerate=sh_audio->wf->nSamplesPerSec; // decodes 65 byte -> 320 short // 1 sec: sh_audio->channels*sh_audio->samplerate samples // 1 frame: 320 samples sh_audio->i_bps=65*(sh_audio->channels*sh_audio->samplerate)/320; // 1:10 break; } case AFM_IMA4: { // IMA-ADPCM 4:1 audio codec: sh_audio->channels=sh_audio->wf->nChannels; sh_audio->samplerate=sh_audio->wf->nSamplesPerSec; // decodes 34 byte -> 64 short sh_audio->i_bps=IMA4_BLOCK_SIZE*(sh_audio->channels*sh_audio->samplerate)/IMA4_SAMPLES_PER_BLOCK; // 1:4 break; } case AFM_MPEG: { // MPEG Audio: dec_audio_sh=sh_audio; // save sh_audio for the callback: #ifdef USE_FAKE_MONO MP3_Init(fakemono); #else MP3_Init(); #endif MP3_samplerate=MP3_channels=0; // printf("[\n"); sh_audio->a_buffer_len=MP3_DecodeFrame(sh_audio->a_buffer,-1); // printf("]\n"); sh_audio->channels=2; // hack sh_audio->samplerate=MP3_samplerate; sh_audio->i_bps=MP3_bitrate*(1000/8); break; } #ifdef HAVE_OGGVORBIS case AFM_VORBIS: { // OggVorbis Audio: #if 0 /* just here for reference - atmos */ ogg_sync_state oy; /* sync and verify incoming physical bitstream */ ogg_stream_state os; /* take physical pages, weld into a logical stream of packets */ ogg_page og; /* one Ogg bitstream page. Vorbis packets are inside */ ogg_packet op; /* one raw packet of data for decode */ vorbis_info vi; /* struct that stores all the static vorbis bitstream settings */ vorbis_comment vc; /* struct that stores all the bitstream user comments */ vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ vorbis_block vb; /* local working space for packet->PCM decode */ #else /* nix, nada, rien, nothing, nem, nüx */ #endif uint32_t hdrsizes[3];/* stores vorbis header sizes from AVI audio header, maybe use ogg_uint32_t */ //int i; int ret; char *buffer; ogg_packet hdr; //ov_struct_t *s=&sh_audio->ov; sh_audio->ov=malloc(sizeof(ov_struct_t)); //s=&sh_audio->ov; vorbis_info_init(&sh_audio->ov->vi); vorbis_comment_init(&sh_audio->ov->vc); mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"OggVorbis: cbsize: %i\n", sh_audio->wf->cbSize); memcpy(hdrsizes, ((unsigned char*)sh_audio->wf)+2*sizeof(WAVEFORMATEX), 3*sizeof(uint32_t)); mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"OggVorbis: Read header sizes: initial: %i comment: %i codebook: %i\n", hdrsizes[0], hdrsizes[1], hdrsizes[2]); /*for(i=12; i <= 40; i+=2) { // header bruteforce :) memcpy(hdrsizes, ((unsigned char*)sh_audio->wf)+i, 3*sizeof(uint32_t)); printf("OggVorbis: Read header sizes (%i): %ld %ld %ld\n", i, hdrsizes[0], hdrsizes[1], hdrsizes[2]); }*/ /* read headers */ // FIXME disable sound on errors here, we absolutely need this headers! - atmos hdr.packet=NULL; hdr.b_o_s = 1; /* beginning of stream for first packet */ hdr.bytes = hdrsizes[0]; hdr.packet = realloc(hdr.packet,hdr.bytes); memcpy(hdr.packet,((unsigned char*)sh_audio->wf)+2*sizeof(WAVEFORMATEX)+3*sizeof(uint32_t),hdr.bytes); if(vorbis_synthesis_headerin(&sh_audio->ov->vi,&sh_audio->ov->vc,&hdr)<0) mp_msg(MSGT_DECAUDIO,MSGL_WARN,"OggVorbis: initial (identification) header broken!\n"); hdr.b_o_s = 0; hdr.bytes = hdrsizes[1]; hdr.packet = realloc(hdr.packet,hdr.bytes); memcpy(hdr.packet,((unsigned char*)sh_audio->wf)+2*sizeof(WAVEFORMATEX)+3*sizeof(uint32_t)+hdrsizes[0],hdr.bytes); if(vorbis_synthesis_headerin(&sh_audio->ov->vi,&sh_audio->ov->vc,&hdr)<0) mp_msg(MSGT_DECAUDIO,MSGL_WARN,"OggVorbis: comment header broken!\n"); hdr.bytes = hdrsizes[2]; hdr.packet = realloc(hdr.packet,hdr.bytes); memcpy(hdr.packet,((unsigned char*)sh_audio->wf)+2*sizeof(WAVEFORMATEX)+3*sizeof(uint32_t)+hdrsizes[0]+hdrsizes[1],hdr.bytes); if(vorbis_synthesis_headerin(&sh_audio->ov->vi,&sh_audio->ov->vc,&hdr)<0) mp_msg(MSGT_DECAUDIO,MSGL_WARN,"OggVorbis: codebook header broken!\n"); hdr.bytes=0; hdr.packet = realloc(hdr.packet,hdr.bytes); /* free */ /* done with the headers */ /* Throw the comments plus a few lines about the bitstream we're decoding */ { char **ptr=sh_audio->ov->vc.user_comments; while(*ptr){ mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbisComment: %s\n",*ptr); ++ptr; } mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Bitstream is %d channel, %ldHz, %ldkbit/s %cBR\n",sh_audio->ov->vi.channels,sh_audio->ov->vi.rate,sh_audio->ov->vi.bitrate_nominal/1000, (sh_audio->ov->vi.bitrate_lower!=sh_audio->ov->vi.bitrate_nominal)||(sh_audio->ov->vi.bitrate_upper!=sh_audio->ov->vi.bitrate_nominal)?'V':'C'); mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Encoded by: %s\n",sh_audio->ov->vc.vendor); } sh_audio->channels=sh_audio->ov->vi.channels; sh_audio->samplerate=sh_audio->ov->vi.rate; sh_audio->i_bps=sh_audio->ov->vi.bitrate_nominal/8; // printf("[\n"); // sh_audio->a_buffer_len=sh_audio->audio_out_minsize;///ov->vi.channels; // printf("]\n"); /* OK, got and parsed all three headers. Initialize the Vorbis packet->PCM decoder. */ vorbis_synthesis_init(&sh_audio->ov->vd,&sh_audio->ov->vi); /* central decode state */ vorbis_block_init(&sh_audio->ov->vd,&sh_audio->ov->vb); /* local state for most of the decode so multiple block decodes can proceed in parallel. We could init multiple vorbis_block structures for vd here */ //printf("OggVorbis: synthesis and block init done.\n"); ogg_sync_init(&sh_audio->ov->oy); /* Now we can read pages */ while((ret = ogg_sync_pageout(&sh_audio->ov->oy,&sh_audio->ov->og))!=1) { if(ret == -1) mp_msg(MSGT_DECAUDIO,MSGL_WARN,"OggVorbis: Pageout: not properly synced, had to skip some bytes.\n"); else if(ret == 0) { mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Pageout: need more data to verify page, reading more data.\n"); /* submit a a_buffer_len block to libvorbis' Ogg layer */ buffer=ogg_sync_buffer(&sh_audio->ov->oy,256); ogg_sync_wrote(&sh_audio->ov->oy,demux_read_data(sh_audio->ds,buffer,256)); } } mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Pageout: successfull.\n"); ogg_stream_pagein(&sh_audio->ov->os,&sh_audio->ov->og); /* we can ignore any errors here as they'll also become apparent at packetout */ /* Get the serial number and set up the rest of decode. */ /* serialno first; use it to set up a logical stream */ ogg_stream_init(&sh_audio->ov->os,ogg_page_serialno(&sh_audio->ov->og)); mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Init OK!\n"); break; } #endif #ifdef USE_LIBMAD case AFM_MAD: { printf(__FILE__ ":%d:mad: initialising\n", __LINE__); mad_frame_init(&mad_frame); mad_stream_init(&mad_stream); printf(__FILE__ ":%d:mad: preparing buffer\n", __LINE__); mad_prepare_buffer(sh_audio, &mad_stream, sh_audio->a_in_buffer_size); mad_stream_buffer(&mad_stream, (unsigned char*)(sh_audio->a_in_buffer), sh_audio->a_in_buffer_len); mad_stream_sync(&mad_stream); mad_synth_init(&mad_synth); if(mad_frame_decode(&mad_frame, &mad_stream) == 0) { printf(__FILE__ ":%d:mad: post processing buffer\n", __LINE__); mad_postprocess_buffer(sh_audio, &mad_stream); } else { printf(__FILE__ ":%d:mad: frame decoding failed\n", __LINE__); } switch (mad_frame.header.mode) { case MAD_MODE_SINGLE_CHANNEL: sh_audio->channels=1; break; case MAD_MODE_DUAL_CHANNEL: case MAD_MODE_JOINT_STEREO: case MAD_MODE_STEREO: sh_audio->channels=2; break; default: mp_msg(MSGT_DECAUDIO, MSGL_FATAL, "mad: unknown number of channels\n"); } mp_msg(MSGT_DECAUDIO, MSGL_HINT, "mad: channels: %d (mad channel mode: %d)\n", sh_audio->channels, mad_frame.header.mode); /* var. name changed in 0.13.0 (beta) (libmad/CHANGES) -- alex */ #if (MAD_VERSION_MAJOR >= 0) && (MAD_VERSION_MINOR >= 13) sh_audio->samplerate=mad_frame.header.samplerate; #else sh_audio->samplerate=mad_frame.header.sfreq; #endif sh_audio->i_bps=mad_frame.header.bitrate; printf(__FILE__ ":%d:mad: continuing\n", __LINE__); break; } #endif } if(!sh_audio->channels || !sh_audio->samplerate){ mp_msg(MSGT_DECAUDIO,MSGL_WARN,MSGTR_UnknownAudio); driver=0; } if(!driver){ if(sh_audio->a_buffer) free(sh_audio->a_buffer); sh_audio->a_buffer=NULL; return 0; } if(!sh_audio->o_bps) sh_audio->o_bps=sh_audio->channels*sh_audio->samplerate*sh_audio->samplesize; return driver; } // Audio decoding: // Decode a single frame (mp3,acm etc) or 'minlen' bytes (pcm/alaw etc) // buffer length is 'maxlen' bytes, it shouldn't be exceeded... int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen){ int len=-1; switch(sh_audio->codec->driver){ #ifdef USE_LIBAVCODEC case AFM_FFMPEG: { unsigned char *start=NULL; int y; while(lends,&start); if(x<=0) break; // error y=avcodec_decode_audio(&lavc_context,(INT16*)buf,&len2,start,x); if(y<0){ mp_msg(MSGT_DECAUDIO,MSGL_V,"lavc_audio: error\n");break; } if(yds->buffer_pos+=y-x; // put back data (HACK!) if(len2>0){ //len=len2;break; if(len<0) len=len2; else len+=len2; buf+=len2; } mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"Decoded %d -> %d \n",y,len2); } } break; #endif case AFM_MPEG: // MPEG layer 2 or 3 len=MP3_DecodeFrame(buf,-1); // len=MP3_DecodeFrame(buf,3); break; #ifdef HAVE_OGGVORBIS case AFM_VORBIS: { // OggVorbis /* note: good minlen would be 4k or 8k IMHO - atmos */ int ret; char *buffer; int bytes; int samples; float **pcm; //ogg_int16_t convbuffer[4096]; // int convsize; int readlen=1024; len=0; // convsize=minlen/sh_audio->ov->vi.channels; while(len < minlen) { /* double loop allows for break in inner loop */ while(len < minlen) { /* without aborting the outer loop - atmos */ ret=ogg_stream_packetout(&sh_audio->ov->os,&sh_audio->ov->op); if(ret==0) { int xxx=0; //printf("OggVorbis: Packetout: need more data, paging!\n"); while((ret = ogg_sync_pageout(&sh_audio->ov->oy,&sh_audio->ov->og))!=1) { if(ret == -1) mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Pageout: not properly synced, had to skip some bytes.\n"); else if(ret == 0) { //printf("OggVorbis: Pageout: need more data to verify page, reading more data.\n"); /* submit a readlen k block to libvorbis' Ogg layer */ buffer=ogg_sync_buffer(&sh_audio->ov->oy,readlen); bytes=demux_read_data(sh_audio->ds,buffer,readlen); xxx+=bytes; ogg_sync_wrote(&sh_audio->ov->oy,bytes); if(bytes==0) mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: 0Bytes written, possible End of Stream\n"); } } mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"\n[sync: %d ]\n",xxx); //printf("OggVorbis: Pageout: successfull, pagin in.\n"); if(ogg_stream_pagein(&sh_audio->ov->os,&sh_audio->ov->og)<0) mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Pagein failed!\n"); break; } else if(ret<0) { mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: Packetout: missing or corrupt data, skipping packet!\n"); break; } else { /* we have a packet. Decode it */ if(vorbis_synthesis(&sh_audio->ov->vb,&sh_audio->ov->op)==0) /* test for success! */ vorbis_synthesis_blockin(&sh_audio->ov->vd,&sh_audio->ov->vb); /* **pcm is a multichannel float vector. In stereo, for example, pcm[0] is left, and pcm[1] is right. samples is the size of each channel. Convert the float values (-1.<=range<=1.) to whatever PCM format and write it out */ while((samples=vorbis_synthesis_pcmout(&sh_audio->ov->vd,&pcm))>0){ int i,j; int clipflag=0; int convsize=(maxlen-len)/(2*sh_audio->ov->vi.channels); // max size! int bout=(samplesov->vi.channels;i++){ ogg_int16_t *convbuffer=(ogg_int16_t *)(&buf[len]); ogg_int16_t *ptr=convbuffer+i; float *mono=pcm[i]; for(j=0;j32767){ val=32767; clipflag=1; } if(val<-32768){ val=-32768; clipflag=1; } *ptr=val; ptr+=sh_audio->ov->vi.channels; } } if(clipflag) mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"Clipping in frame %ld\n",(long)(sh_audio->ov->vd.sequence)); //fwrite(convbuffer,2*sh_audio->ov->vi.channels,bout,stderr); //dump pcm to file for debugging //memcpy(buf+len,convbuffer,2*sh_audio->ov->vi.channels*bout); len+=2*sh_audio->ov->vi.channels*bout; mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"\n[decoded: %d / %d ]\n",bout,samples); vorbis_synthesis_read(&sh_audio->ov->vd,bout); /* tell libvorbis how many samples we actually consumed */ } } // from else, packetout ok } // while len } // outer while len if(ogg_page_eos(&sh_audio->ov->og)) mp_msg(MSGT_DECAUDIO,MSGL_V,"OggVorbis: End of Stream reached!\n"); // FIXME clearup decoder, notify mplayer - atmos mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"\n[len: %d ]\n",len); break; } #endif case AFM_PCM: // AVI PCM len=demux_read_data(sh_audio->ds,buf,minlen); break; case AFM_DVDPCM: // DVD PCM { int j; len=demux_read_data(sh_audio->ds,buf,minlen); //if(i&1){ printf("Warning! pcm_audio_size&1 !=0 (%d)\n",i);i&=~1; } // swap endian: for(j=0;jds,buf,minlen/2); unsigned short *d=(unsigned short *) buf; unsigned char *s=buf; len=2*l; if(sh_audio->format==6){ // aLaw while(l>0){ --l; d[l]=alaw2short[s[l]]; } } else { // uLaw while(l>0){ --l; d[l]=ulaw2short[s[l]]; } } break; } case AFM_GSM: // MS-GSM decoder { unsigned char ibuf[65]; // 65 bytes / frame if(demux_read_data(sh_audio->ds,ibuf,65)!=65) break; // EOF XA_MSGSM_Decoder(ibuf,(unsigned short *) buf); // decodes 65 byte -> 320 short // XA_GSM_Decoder(buf,(unsigned short *) &sh_audio->a_buffer[sh_audio->a_buffer_len]); // decodes 33 byte -> 160 short len=2*320; break; } case AFM_IMA4: // IMA-ADPCM 4:1 audio codec: { unsigned char ibuf[IMA4_BLOCK_SIZE]; // bytes / frame if(demux_read_data(sh_audio->ds,ibuf,IMA4_BLOCK_SIZE)!=IMA4_BLOCK_SIZE) break; // EOF len=2*ima4_decode_block((unsigned short*)buf,ibuf,2*IMA4_SAMPLES_PER_BLOCK); break; } case AFM_AC3: // AC3 decoder //printf("{1:%d}",avi_header.idx_pos);fflush(stdout); if(!sh_audio->ac3_frame) sh_audio->ac3_frame=ac3_decode_frame(); //printf("{2:%d}",avi_header.idx_pos);fflush(stdout); if(sh_audio->ac3_frame){ len = 256 * 6 *sh_audio->channels*sh_audio->samplesize; memcpy(buf,((ac3_frame_t*)sh_audio->ac3_frame)->audio_data,len); sh_audio->ac3_frame=NULL; } //printf("{3:%d}",avi_header.idx_pos);fflush(stdout); break; case AFM_HWAC3: // AC3 through SPDIF if(demux_read_data(sh_audio->ds,sh_audio->ac3_frame, 6144) != 6144) break; //EOF ac3_iec958_build_burst(1536, 0x1F, 1, buf, sh_audio->ac3_frame); len = 6144; break; #ifdef USE_WIN32DLL case AFM_ACM: // len=sh_audio->audio_out_minsize; // optimal decoded fragment size // if(lenmaxlen) len=maxlen; // len=acm_decode_audio(sh_audio,buf,len); len=acm_decode_audio(sh_audio,buf,minlen,maxlen); break; #endif #ifdef USE_DIRECTSHOW case AFM_DSHOW: // DirectShow { int size_in=0; int size_out=0; int srcsize=DS_AudioDecoder_GetSrcSize(maxlen); mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DShow says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen); if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!! if(sh_audio->a_in_buffer_lena_in_buffer_len+= demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len], srcsize-sh_audio->a_in_buffer_len); } DS_AudioDecoder_Convert(sh_audio->a_in_buffer,sh_audio->a_in_buffer_len, buf,maxlen, &size_in,&size_out); mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DShow: audio %d -> %d converted (in_buf_len=%d of %d) %d\n",size_in,size_out,sh_audio->a_in_buffer_len,sh_audio->a_in_buffer_size,ds_tell_pts(sh_audio->ds)); if(size_in>=sh_audio->a_in_buffer_len){ sh_audio->a_in_buffer_len=0; } else { sh_audio->a_in_buffer_len-=size_in; memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len); } len=size_out; break; } #endif #ifdef USE_LIBMAD case AFM_MAD: { mad_prepare_buffer(sh_audio, &mad_stream, sh_audio->a_in_buffer_size); mad_stream_buffer(&mad_stream, sh_audio->a_in_buffer, sh_audio->a_in_buffer_len); if(mad_frame_decode(&mad_frame, &mad_stream) == 0) { mad_synth_frame(&mad_synth, &mad_frame); mad_postprocess_buffer(sh_audio, &mad_stream); /* and fill buffer */ { int i; int end_size = mad_synth.pcm.length; signed short* samples = (signed short*)buf; if(end_size > maxlen/4) end_size=maxlen/4; for(i=0; icodec->driver){ case AFM_MPEG: MP3_DecodeFrame(NULL,-2); // resync MP3_DecodeFrame(NULL,-2); // resync MP3_DecodeFrame(NULL,-2); // resync break; #ifdef HAVE_OGGVORBIS case AFM_VORBIS: //printf("OggVorbis: resetting stream.\n"); ogg_sync_reset(&sh_audio->ov->oy); ogg_stream_reset(&sh_audio->ov->os); break; #endif case AFM_AC3: ac3_bitstream_reset(); // reset AC3 bitstream buffer // if(verbose){ printf("Resyncing AC3 audio...");fflush(stdout);} sh_audio->ac3_frame=ac3_decode_frame(); // resync // if(verbose) printf(" OK!\n"); break; case AFM_ACM: case AFM_DSHOW: case AFM_HWAC3: sh_audio->a_in_buffer_len=0; // reset ACM/DShow audio buffer break; #ifdef USE_LIBMAD case AFM_MAD: mad_prepare_buffer(sh_audio, &mad_stream, sh_audio->a_in_buffer_size); mad_stream_buffer(&mad_stream, sh_audio->a_in_buffer, sh_audio->a_in_buffer_len); mad_stream_sync(&mad_stream); mad_postprocess_buffer(sh_audio, &mad_stream); break; #endif } } void skip_audio_frame(sh_audio_t *sh_audio){ switch(sh_audio->codec->driver){ case AFM_MPEG: MP3_DecodeFrame(NULL,-2);break; // skip MPEG frame case AFM_AC3: sh_audio->ac3_frame=ac3_decode_frame();break; // skip AC3 frame case AFM_ACM: case AFM_DSHOW: { int skip=sh_audio->wf->nBlockAlign; if(skip<16){ skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7); if(skip<16) skip=16; } demux_read_data(sh_audio->ds,NULL,skip); break; } case AFM_PCM: case AFM_DVDPCM: case AFM_ALAW: { int skip=sh_audio->i_bps/16; skip=skip&(~3); demux_read_data(sh_audio->ds,NULL,skip); break; } #ifdef USE_LIBMAD case AFM_MAD: { mad_prepare_buffer(sh_audio, &mad_stream, sh_audio->a_in_buffer_size); mad_stream_buffer(&mad_stream, sh_audio->a_in_buffer, sh_audio->a_in_buffer_len); mad_stream_skip(&mad_stream, 2); mad_stream_sync(&mad_stream); mad_postprocess_buffer(sh_audio, &mad_stream); break; } #endif default: ds_fill_buffer(sh_audio->ds); // skip PCM frame } }