/***************************************************************************** * wav.c : wav file input module for vlc ***************************************************************************** * Copyright (C) 2001-2008 VLC authors and VideoLAN * $Id$ * * Authors: Laurent Aimar * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include "windows_audio_commons.h" #define WAV_CHAN_MAX 32 static_assert( INPUT_CHAN_MAX >= WAV_CHAN_MAX, "channel count mismatch" ); /***************************************************************************** * Module descriptor *****************************************************************************/ static int Open ( vlc_object_t * ); static void Close( vlc_object_t * ); vlc_module_begin () set_description( N_("WAV demuxer") ) set_category( CAT_INPUT ) set_subcategory( SUBCAT_INPUT_DEMUX ) set_capability( "demux", 142 ) set_callbacks( Open, Close ) vlc_module_end () /***************************************************************************** * Local prototypes *****************************************************************************/ static int Demux ( demux_t * ); static int Control( demux_t *, int i_query, va_list args ); struct demux_sys_t { es_format_t fmt; es_out_id_t *p_es; int64_t i_data_pos; int64_t i_data_size; unsigned int i_frame_size; unsigned int i_frame_samples; date_t pts; uint32_t i_channel_mask; uint8_t i_chans_to_reorder; /* do we need channel reordering */ uint8_t pi_chan_table[AOUT_CHAN_MAX]; }; static int ChunkFind( demux_t *, const char *, unsigned int * ); static int FrameInfo_IMA_ADPCM( unsigned int *, unsigned *, const es_format_t * ); static int FrameInfo_MS_ADPCM ( unsigned int *, unsigned *, const es_format_t * ); static int FrameInfo_Creative_ADPCM( unsigned int *, unsigned *, const es_format_t * ); static int FrameInfo_PCM ( unsigned int *, unsigned *, const es_format_t * ); static int FrameInfo_MSGSM ( unsigned int *, unsigned *, const es_format_t * ); /***************************************************************************** * Open: check file and initializes structures *****************************************************************************/ static int Open( vlc_object_t * p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys; const uint8_t *p_peek; bool b_is_rf64; unsigned int i_size; uint64_t i_data_size; unsigned int i_extended; const char *psz_name; WAVEFORMATEXTENSIBLE *p_wf_ext = NULL; WAVEFORMATEX *p_wf = NULL; /* Is it a wav file ? */ if( vlc_stream_Peek( p_demux->s, &p_peek, 12 ) < 12 ) return VLC_EGENERIC; b_is_rf64 = ( memcmp( p_peek, "RF64", 4 ) == 0 ); if( ( !b_is_rf64 && memcmp( p_peek, "RIFF", 4 ) ) || memcmp( &p_peek[8], "WAVE", 4 ) ) { return VLC_EGENERIC; } p_demux->pf_demux = Demux; p_demux->pf_control = Control; p_demux->p_sys = p_sys = malloc( sizeof( *p_sys ) ); if( unlikely(!p_sys) ) return VLC_ENOMEM; es_format_Init( &p_sys->fmt, AUDIO_ES, 0 ); p_sys->p_es = NULL; p_sys->i_data_size = 0; p_sys->i_frame_samples = 0; p_sys->i_chans_to_reorder = 0; p_sys->i_channel_mask = 0; /* skip riff header */ if( vlc_stream_Read( p_demux->s, NULL, 12 ) != 12 ) goto error; if( b_is_rf64 ) { /* search datasize64 chunk */ if( ChunkFind( p_demux, "ds64", &i_size ) ) { msg_Err( p_demux, "cannot find 'ds64' chunk" ); goto error; } if( i_size < 24 ) { msg_Err( p_demux, "invalid 'ds64' chunk" ); goto error; } if( vlc_stream_Read( p_demux->s, NULL, 8 ) != 8 ) goto error; if( vlc_stream_Peek( p_demux->s, &p_peek, 24 ) < 24 ) goto error; i_data_size = GetQWLE( &p_peek[8] ); if( i_data_size >> 62 ) p_sys->i_data_size = (int64_t)1 << 62; else p_sys->i_data_size = i_data_size; if( vlc_stream_Read( p_demux->s, NULL, i_size ) != (int)i_size || ( (i_size & 1) && vlc_stream_Read( p_demux->s, NULL, 1 ) != 1 ) ) goto error; } /* search fmt chunk */ if( ChunkFind( p_demux, "fmt ", &i_size ) ) { msg_Err( p_demux, "cannot find 'fmt ' chunk" ); goto error; } i_size += 2; if( i_size < sizeof( WAVEFORMATEX ) || i_size > (sizeof( WAVEFORMATEX ) + UINT16_MAX ) ) { msg_Err( p_demux, "invalid 'fmt ' chunk of size %" PRIu32, i_size ); goto error; } if( vlc_stream_Read( p_demux->s, NULL, 8 ) != 8 ) goto error; /* load waveformatex */ p_wf_ext = malloc( i_size ); if( unlikely( !p_wf_ext ) ) goto error; p_wf = &p_wf_ext->Format; p_wf->cbSize = 0; i_size -= 2; if( vlc_stream_Read( p_demux->s, p_wf, i_size ) != (int)i_size || ( ( i_size & 1 ) && vlc_stream_Read( p_demux->s, NULL, 1 ) != 1 ) ) { msg_Err( p_demux, "cannot load 'fmt ' chunk" ); goto error; } wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_sys->fmt.i_codec, &psz_name ); p_sys->fmt.audio.i_channels = GetWLE ( &p_wf->nChannels ); p_sys->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec ); p_sys->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign ); p_sys->fmt.i_bitrate = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8; p_sys->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample ); if( i_size >= sizeof(WAVEFORMATEX) ) p_sys->fmt.i_extra = __MIN( GetWLE( &p_wf->cbSize ), i_size - sizeof(WAVEFORMATEX) ); i_extended = 0; /* Handle new WAVE_FORMAT_EXTENSIBLE wav files */ /* see the following link for more information: * http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EFAA */ if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_EXTENSIBLE && i_size >= sizeof( WAVEFORMATEXTENSIBLE ) && ( p_sys->fmt.i_extra + sizeof( WAVEFORMATEX ) >= sizeof( WAVEFORMATEXTENSIBLE ) ) ) { unsigned i_channel_mask; GUID guid_subformat; guid_subformat = p_wf_ext->SubFormat; guid_subformat.Data1 = GetDWLE( &p_wf_ext->SubFormat.Data1 ); guid_subformat.Data2 = GetWLE( &p_wf_ext->SubFormat.Data2 ); guid_subformat.Data3 = GetWLE( &p_wf_ext->SubFormat.Data3 ); sf_tag_to_fourcc( &guid_subformat, &p_sys->fmt.i_codec, &psz_name ); msg_Dbg( p_demux, "extensible format guid " GUID_FMT, GUID_PRINT(guid_subformat) ); i_extended = sizeof( WAVEFORMATEXTENSIBLE ) - sizeof( WAVEFORMATEX ); p_sys->fmt.i_extra -= i_extended; i_channel_mask = GetDWLE( &p_wf_ext->dwChannelMask ); if( i_channel_mask ) { int i_match = 0; p_sys->i_channel_mask = getChannelMask( &i_channel_mask, p_sys->fmt.audio.i_channels, &i_match ); if( i_channel_mask ) msg_Warn( p_demux, "Some channels are unrecognized or uselessly specified (0x%x)", i_channel_mask ); if( i_match < p_sys->fmt.audio.i_channels ) { int i_missing = p_sys->fmt.audio.i_channels - i_match; msg_Warn( p_demux, "Trying to fill up unspecified position for %d channels", p_sys->fmt.audio.i_channels - i_match ); static const uint32_t pi_pair[] = { AOUT_CHAN_REARLEFT|AOUT_CHAN_REARRIGHT, AOUT_CHAN_MIDDLELEFT|AOUT_CHAN_MIDDLERIGHT, AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT }; /* FIXME: Unused yet static const uint32_t pi_center[] = { AOUT_CHAN_REARCENTER, 0, AOUT_CHAN_CENTER }; */ /* Try to complete with pair */ for( unsigned i = 0; i < sizeof(pi_pair)/sizeof(*pi_pair); i++ ) { if( i_missing >= 2 && !(p_sys->i_channel_mask & pi_pair[i] ) ) { i_missing -= 2; p_sys->i_channel_mask |= pi_pair[i]; } } /* Well fill up with what we can */ for( unsigned i = 0; i < sizeof(pi_channels_aout)/sizeof(*pi_channels_aout) && i_missing > 0; i++ ) { if( !( p_sys->i_channel_mask & pi_channels_aout[i] ) ) { p_sys->i_channel_mask |= pi_channels_aout[i]; i_missing--; if( i_missing <= 0 ) break; } } i_match = p_sys->fmt.audio.i_channels - i_missing; } if( i_match < p_sys->fmt.audio.i_channels ) { msg_Err( p_demux, "Invalid/unsupported channel mask" ); p_sys->i_channel_mask = 0; } } } if( p_sys->i_channel_mask == 0 && p_sys->fmt.audio.i_channels > 2 && p_sys->fmt.audio.i_channels <= AOUT_CHAN_MAX ) { /* A dwChannelMask of 0 tells the audio device to render the first * channel to the first port on the device, the second channel to the * second port on the device, and so on. pi_default_channels is * different than pi_channels_aout. Indeed FLC/FRC must be treated a * SL/SR in that case. See "Default Channel Ordering" and "Details * about dwChannelMask" from msdn */ static const uint32_t pi_default_channels[] = { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_CENTER, AOUT_CHAN_LFE, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, AOUT_CHAN_REARCENTER }; for( unsigned i = 0; i < p_sys->fmt.audio.i_channels && i < (sizeof(pi_default_channels) / sizeof(*pi_default_channels)); i++ ) p_sys->i_channel_mask |= pi_default_channels[i]; } if( p_sys->i_channel_mask ) { if( p_sys->fmt.i_codec == VLC_FOURCC('a','r','a','w') || p_sys->fmt.i_codec == VLC_FOURCC('a','f','l','t') ) p_sys->i_chans_to_reorder = aout_CheckChannelReorder( pi_channels_aout, NULL, p_sys->i_channel_mask, p_sys->pi_chan_table ); msg_Dbg( p_demux, "channel mask: %x, reordering: %u", p_sys->i_channel_mask, p_sys->i_chans_to_reorder ); } p_sys->fmt.audio.i_physical_channels = p_sys->i_channel_mask; if( p_sys->fmt.i_extra > 0 ) { p_sys->fmt.p_extra = malloc( p_sys->fmt.i_extra ); if( unlikely(!p_sys->fmt.p_extra) ) { p_sys->fmt.i_extra = 0; goto error; } memcpy( p_sys->fmt.p_extra, (uint8_t *)p_wf + sizeof( WAVEFORMATEX ) + i_extended, p_sys->fmt.i_extra ); } msg_Dbg( p_demux, "format: 0x%4.4x, fourcc: %4.4s, channels: %d, " "freq: %u Hz, bitrate: %uKo/s, blockalign: %d, bits/samples: %d, " "extra size: %d", GetWLE( &p_wf->wFormatTag ), (char *)&p_sys->fmt.i_codec, p_sys->fmt.audio.i_channels, p_sys->fmt.audio.i_rate, p_sys->fmt.i_bitrate / 8 / 1024, p_sys->fmt.audio.i_blockalign, p_sys->fmt.audio.i_bitspersample, p_sys->fmt.i_extra ); free( p_wf ); p_wf = NULL; switch( p_sys->fmt.i_codec ) { case VLC_FOURCC( 'a', 'r', 'a', 'w' ): case VLC_FOURCC( 'a', 'f', 'l', 't' ): case VLC_FOURCC( 'u', 'l', 'a', 'w' ): case VLC_CODEC_ALAW: case VLC_CODEC_MULAW: if( FrameInfo_PCM( &p_sys->i_frame_size, &p_sys->i_frame_samples, &p_sys->fmt ) ) goto error; p_sys->fmt.i_codec = vlc_fourcc_GetCodecAudio( p_sys->fmt.i_codec, p_sys->fmt.audio.i_bitspersample ); if( p_sys->fmt.i_codec == 0 ) { msg_Err( p_demux, "Unrecognized codec" ); goto error; } break; case VLC_CODEC_ADPCM_MS: /* FIXME not sure at all FIXME */ case VLC_FOURCC( 'm', 's', 0x00, 0x61 ): case VLC_FOURCC( 'm', 's', 0x00, 0x62 ): if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples, &p_sys->fmt ) ) goto error; break; case VLC_CODEC_ADPCM_IMA_WAV: if( FrameInfo_IMA_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples, &p_sys->fmt ) ) goto error; break; case VLC_CODEC_ADPCM_CREATIVE: if( FrameInfo_Creative_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples, &p_sys->fmt ) ) goto error; break; case VLC_CODEC_MPGA: case VLC_CODEC_A52: /* FIXME set end of area FIXME */ goto error; case VLC_CODEC_GSM_MS: case VLC_CODEC_ADPCM_G726: case VLC_CODEC_TRUESPEECH: case VLC_CODEC_ATRAC3P: case VLC_CODEC_ATRAC3: case VLC_CODEC_G723_1: case VLC_CODEC_WMA2: if( FrameInfo_MSGSM( &p_sys->i_frame_size, &p_sys->i_frame_samples, &p_sys->fmt ) ) goto error; break; default: msg_Err( p_demux, "unsupported codec (%4.4s)", (char*)&p_sys->fmt.i_codec ); goto error; } if( p_sys->i_frame_size == 0 || p_sys->i_frame_samples == 0 ) { msg_Dbg( p_demux, "invalid frame size: 0 0" ); goto error; } if( p_sys->fmt.audio.i_rate == 0 ) { msg_Dbg( p_demux, "invalid sample rate: 0" ); goto error; } msg_Dbg( p_demux, "found %s audio format", psz_name ); if( ChunkFind( p_demux, "data", &i_size ) ) { msg_Err( p_demux, "cannot find 'data' chunk" ); goto error; } if( vlc_stream_Read( p_demux->s, NULL, 8 ) != 8 ) goto error; p_sys->i_data_pos = vlc_stream_Tell( p_demux->s ); if( !b_is_rf64 || i_size < UINT32_MAX ) { int64_t i_stream_size = stream_Size( p_demux->s ); if( i_stream_size > 0 && i_stream_size >= i_size + p_sys->i_data_pos ) p_sys->i_data_size = i_size; } if( p_sys->fmt.i_bitrate <= 0 ) { p_sys->fmt.i_bitrate = (int64_t)p_sys->i_frame_size * p_sys->fmt.audio.i_rate * 8 / p_sys->i_frame_samples; } p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt ); date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 ); date_Set( &p_sys->pts, 1 ); return VLC_SUCCESS; error: msg_Err( p_demux, "An error occurred during wav demuxing" ); free( p_wf ); es_format_Clean( &p_sys->fmt ); free( p_sys ); return VLC_EGENERIC; } /***************************************************************************** * Demux: read packet and send them to decoders ***************************************************************************** * Returns -1 in case of error, 0 in case of EOF, 1 otherwise *****************************************************************************/ static int Demux( demux_t *p_demux ) { demux_sys_t *p_sys = p_demux->p_sys; block_t *p_block; const int64_t i_pos = vlc_stream_Tell( p_demux->s ); unsigned int i_read_size = p_sys->i_frame_size; if( p_sys->i_data_size > 0 ) { int64_t i_end = p_sys->i_data_pos + p_sys->i_data_size; if ( i_pos >= i_end ) return 0; /* EOF */ /* Don't read past data chunk boundary */ if ( i_end < i_pos + i_read_size ) i_read_size = i_end - i_pos; } if( ( p_block = vlc_stream_Block( p_demux->s, i_read_size ) ) == NULL ) { msg_Warn( p_demux, "cannot read data" ); return 0; } p_block->i_dts = p_block->i_pts = VLC_TICK_0 + date_Get( &p_sys->pts ); /* set PCR */ es_out_SetPCR( p_demux->out, p_block->i_pts ); /* Do the channel reordering */ if( p_sys->i_chans_to_reorder ) aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer, p_sys->i_chans_to_reorder, p_sys->pi_chan_table, p_sys->fmt.i_codec ); es_out_Send( p_demux->out, p_sys->p_es, p_block ); date_Increment( &p_sys->pts, p_sys->i_frame_samples ); return 1; } /***************************************************************************** * Close: frees unused data *****************************************************************************/ static void Close ( vlc_object_t * p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys = p_demux->p_sys; es_format_Clean( &p_sys->fmt ); free( p_sys ); } /***************************************************************************** * Control: *****************************************************************************/ static int Control( demux_t *p_demux, int i_query, va_list args ) { demux_sys_t *p_sys = p_demux->p_sys; int64_t i_end = -1; if( p_sys->i_data_size > 0 ) i_end = p_sys->i_data_pos + p_sys->i_data_size; return demux_vaControlHelper( p_demux->s, p_sys->i_data_pos, i_end, p_sys->fmt.i_bitrate, p_sys->fmt.audio.i_blockalign, i_query, args ); } /***************************************************************************** * Local functions *****************************************************************************/ static int ChunkFind( demux_t *p_demux, const char *fcc, unsigned int *pi_size ) { const uint8_t *p_peek; for( ;; ) { uint32_t i_size; if( vlc_stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) { msg_Err( p_demux, "cannot peek" ); return VLC_EGENERIC; } i_size = GetDWLE( p_peek + 4 ); msg_Dbg( p_demux, "chunk: fcc=`%4.4s` size=%"PRIu32, p_peek, i_size ); if( !memcmp( p_peek, fcc, 4 ) ) { if( pi_size ) { *pi_size = i_size; } return VLC_SUCCESS; } /* Skip chunk */ if( vlc_stream_Read( p_demux->s, NULL, 8 ) != 8 || vlc_stream_Read( p_demux->s, NULL, i_size ) != (int)i_size || ( (i_size & 1) && vlc_stream_Read( p_demux->s, NULL, 1 ) != 1 ) ) return VLC_EGENERIC; } } static int FrameInfo_PCM( unsigned int *pi_size, unsigned *pi_samples, const es_format_t *p_fmt ) { int i_bytes; if( p_fmt->audio.i_rate > 352800 || p_fmt->audio.i_bitspersample > 64 || p_fmt->audio.i_channels > WAV_CHAN_MAX ) return VLC_EGENERIC; /* read samples for 50ms of */ *pi_samples = __MAX( p_fmt->audio.i_rate / 20, 1 ); i_bytes = *pi_samples * p_fmt->audio.i_channels * ( (p_fmt->audio.i_bitspersample + 7) / 8 ); if( p_fmt->audio.i_blockalign > 0 ) { const int i_modulo = i_bytes % p_fmt->audio.i_blockalign; if( i_modulo > 0 ) i_bytes += p_fmt->audio.i_blockalign - i_modulo; } *pi_size = i_bytes; return VLC_SUCCESS; } static int FrameInfo_MS_ADPCM( unsigned int *pi_size, unsigned *pi_samples, const es_format_t *p_fmt ) { if( p_fmt->audio.i_channels == 0 ) return VLC_EGENERIC; if( p_fmt->audio.i_blockalign < 7 * p_fmt->audio.i_channels ) return VLC_EGENERIC; *pi_samples = 2 + 2 * ( p_fmt->audio.i_blockalign - 7 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels; *pi_size = p_fmt->audio.i_blockalign; return VLC_SUCCESS; } static int FrameInfo_IMA_ADPCM( unsigned int *pi_size, unsigned *pi_samples, const es_format_t *p_fmt ) { if( p_fmt->audio.i_channels == 0 ) return VLC_EGENERIC; if( p_fmt->audio.i_blockalign < 4 * p_fmt->audio.i_channels ) return VLC_EGENERIC; *pi_samples = 2 * ( p_fmt->audio.i_blockalign - 4 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels; *pi_size = p_fmt->audio.i_blockalign; return VLC_SUCCESS; } static int FrameInfo_Creative_ADPCM( unsigned int *pi_size, unsigned *pi_samples, const es_format_t *p_fmt ) { if( p_fmt->audio.i_channels == 0 ) return VLC_EGENERIC; /* 4 bits / sample */ *pi_samples = p_fmt->audio.i_blockalign * 2 / p_fmt->audio.i_channels; *pi_size = p_fmt->audio.i_blockalign; return VLC_SUCCESS; } static int FrameInfo_MSGSM( unsigned int *pi_size, unsigned *pi_samples, const es_format_t *p_fmt ) { if( p_fmt->i_bitrate <= 0 ) return VLC_EGENERIC; *pi_samples = ( p_fmt->audio.i_blockalign * p_fmt->audio.i_rate * 8) / p_fmt->i_bitrate; *pi_size = p_fmt->audio.i_blockalign; return VLC_SUCCESS; }