[4590] | 1 | //codecfilter_flac.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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| 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | #include <roaraudio/units.h> |
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| 28 | |
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| 29 | #ifdef ROAR_HAVE_LIBFLAC |
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| 30 | |
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| 31 | FLAC__StreamDecoderReadStatus cf_flac_cb_read(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data) { |
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| 32 | struct codecfilter_flac_inst * self = client_data; |
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| 33 | ssize_t ret; |
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| 34 | |
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| 35 | ROAR_DBG("cf_flac_cb_read(decoder=%p, buffer=%p, bytes=%p{%u}, client_data=%p) = ?", decoder, buffer, bytes, *bytes, client_data); |
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| 36 | |
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| 37 | ret = stream_vio_s_read(self->ss, buffer, *bytes); |
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| 38 | |
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| 39 | self->decoder.readret = ret; |
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| 40 | |
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| 41 | self->decoder.readc++; |
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| 42 | |
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| 43 | if (ret == -1) { |
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| 44 | *bytes = 0; |
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| 45 | ROAR_DBG("cf_flac_cb_read(decoder=%p, buffer=%p, bytes=%p{%u}, client_data=%p) = FLAC__STREAM_DECODER_READ_STATUS_ABORT", decoder, buffer, bytes, *bytes, client_data); |
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| 46 | return FLAC__STREAM_DECODER_READ_STATUS_ABORT; |
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| 47 | } else { |
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| 48 | *bytes = ret; |
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| 49 | |
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| 50 | if ( ret == 0 && self->decoder.readc == 1 ) { |
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| 51 | ROAR_DBG("cf_flac_cb_read(decoder=%p, buffer=%p, bytes=%p{%u}, client_data=%p) = FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM", decoder, buffer, bytes, *bytes, client_data); |
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| 52 | return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; |
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| 53 | } |
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| 54 | ROAR_DBG("cf_flac_cb_read(decoder=%p, buffer=%p, bytes=%p{%u}, client_data=%p) = FLAC__STREAM_DECODER_READ_STATUS_CONTINUE", decoder, buffer, bytes, *bytes, client_data); |
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| 55 | return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; |
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| 56 | } |
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| 57 | } |
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| 58 | |
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| 59 | FLAC__StreamDecoderWriteStatus cf_flac_cb_write(const FLAC__StreamDecoder * decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) { |
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| 60 | struct codecfilter_flac_inst * self = client_data; |
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| 61 | struct roar_buffer * buf; |
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| 62 | struct roar_interleave is; |
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| 63 | size_t buflen = _32BIT * frame->header.blocksize * frame->header.channels; |
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| 64 | void * bufdata; |
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| 65 | int32_t * c; |
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| 66 | size_t i; |
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| 67 | int32_t shift = 32 - frame->header.bits_per_sample; |
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| 68 | |
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| 69 | ROAR_DBG("cf_flac_cb_write(decoder=%p, frame=%p, buffer=%p, client_data=%p) = ?", decoder, frame, buffer, client_data); |
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| 70 | |
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| 71 | if ( roar_interl_init(&is, frame->header.channels, 32) == -1 ) { |
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| 72 | ROAR_DBG("cf_flac_cb_write(decoder=%p, frame=%p, buffer=%p, client_data=%p) = FLAC__STREAM_DECODER_WRITE_STATUS_ABORT", decoder, frame, buffer, client_data); |
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| 73 | return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
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| 74 | } |
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| 75 | |
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| 76 | if ( roar_buffer_new_data(&buf, buflen, &bufdata) == -1 ) { |
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| 77 | ROAR_DBG("cf_flac_cb_write(decoder=%p, frame=%p, buffer=%p, client_data=%p) = FLAC__STREAM_DECODER_WRITE_STATUS_ABORT", decoder, frame, buffer, client_data); |
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| 78 | return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
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| 79 | } |
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| 80 | |
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| 81 | roar_interl_encode_ext(&is, (void**)buffer, bufdata, buflen); |
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| 82 | |
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| 83 | roar_interl_uninit(&is); |
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| 84 | |
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| 85 | if ( shift ) { |
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| 86 | buflen /= 4; |
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| 87 | for (c = bufdata, i = 0; i < buflen; i++) { |
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| 88 | c[i] <<= shift; |
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| 89 | } |
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| 90 | } |
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| 91 | |
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| 92 | if ( self->decoder.written == NULL ) { |
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| 93 | self->decoder.written = buf; |
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| 94 | } else { |
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| 95 | roar_buffer_add(self->decoder.written, buf); |
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| 96 | } |
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| 97 | |
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| 98 | ROAR_DBG("cf_flac_cb_write(decoder=%p, frame=%p, buffer=%p, client_data=%p) = FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE", decoder, frame, buffer, client_data); |
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| 99 | |
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| 100 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
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| 101 | } |
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| 102 | |
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| 103 | void cf_flac_cb_metadata(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) { |
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[4592] | 104 | struct codecfilter_flac_inst * self = client_data; |
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| 105 | const FLAC__StreamMetadata_VorbisComment * vc; |
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| 106 | FLAC__uint32 i; |
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| 107 | const char * key, * value; |
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| 108 | char keycopy[ROAR_META_MAX_NAMELEN]; |
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| 109 | int type; |
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| 110 | float rpg_track = 0, rpg_album = 0; |
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| 111 | |
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| 112 | if ( metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT ) { |
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| 113 | ROAR_DBG("cf_flac_cb_metadata(decoder=%p, metadata=%p, client_data=%p): have METADATA_TYPE_VORBIS_COMMENT", decoder, metadata, client_data); |
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| 114 | |
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| 115 | stream_meta_clear(ROAR_STREAM(self->ss)->id); |
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| 116 | |
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| 117 | vc = &(metadata->data.vorbis_comment); |
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| 118 | |
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| 119 | for (i = 0; i < vc->num_comments; i++) { |
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| 120 | //printf("c='%s'\n", vc->comments[i].entry); |
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| 121 | key = (const char *)vc->comments[i].entry; |
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| 122 | value = strstr(key, "="); |
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| 123 | if ( value == NULL ) |
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| 124 | continue; |
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| 125 | |
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| 126 | if ( (value - key + 1) > sizeof(keycopy) ) |
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| 127 | continue; |
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| 128 | |
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| 129 | memcpy(keycopy, key, value - key); |
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| 130 | keycopy[sizeof(keycopy)-1] = 0; |
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| 131 | keycopy[value - key] = 0; |
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| 132 | |
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| 133 | value++; |
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| 134 | |
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| 135 | //printf("keycopy='%s', value='%s'\n", keycopy, value); |
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| 136 | |
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| 137 | type = roar_meta_inttype(keycopy); |
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| 138 | if ( type == -1 ) |
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| 139 | continue; |
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| 140 | |
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| 141 | stream_meta_add(ROAR_STREAM(self->ss)->id, type, "", value); |
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| 142 | |
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| 143 | if ( strcmp(keycopy, "REPLAYGAIN_TRACK_PEAK") == 0 ) { |
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| 144 | rpg_track = 1/atof(value); |
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| 145 | /* |
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| 146 | } else if ( strcmp(key, "REPLAYGAIN_TRACK_GAIN") == 0 ) { |
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| 147 | rpg_track = powf(10, atof(value)/20); |
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| 148 | */ |
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| 149 | } else if ( strcmp(keycopy, "REPLAYGAIN_ALBUM_PEAK") == 0 ) { |
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| 150 | rpg_album = 1/atof(value); |
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| 151 | /* |
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| 152 | } else if ( strcmp(key, "REPLAYGAIN_ALBUM_GAIN") == 0 ) { |
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| 153 | rpg_album = powf(10, atof(value)/20); |
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| 154 | */ |
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| 155 | } |
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| 156 | |
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| 157 | } |
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| 158 | |
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| 159 | if ( rpg_album ) { |
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| 160 | self->ss->mixer.rpg_div = 2718; // = int(exp(1)*1000) |
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| 161 | self->ss->mixer.rpg_mul = (float)rpg_album*2718; |
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| 162 | } else if ( rpg_track ) { |
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| 163 | self->ss->mixer.rpg_div = 2718; |
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| 164 | self->ss->mixer.rpg_mul = (float)rpg_track*2718; |
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| 165 | } |
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| 166 | |
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| 167 | stream_meta_finalize(ROAR_STREAM(self->ss)->id); |
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| 168 | } |
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| 169 | |
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[4590] | 170 | ROAR_DBG("cf_flac_cb_metadata(decoder=%p, metadata=%p, client_data=%p) = (void)", decoder, metadata, client_data); |
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| 171 | } |
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| 172 | |
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| 173 | void cf_flac_cb_error(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) { |
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| 174 | ROAR_DBG("cf_flac_cb_error(decoder=%p, status=%i, client_data=%p) = (void)", decoder, (int)status, client_data); |
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| 175 | } |
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| 176 | |
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| 177 | int cf_flac_open(CODECFILTER_USERDATA_T * inst, int codec, |
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| 178 | struct roar_stream_server * info, |
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| 179 | struct roar_codecfilter * filter) { |
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| 180 | struct codecfilter_flac_inst * self; |
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| 181 | |
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| 182 | if ( ROAR_STREAM(info)->dir != ROAR_DIR_PLAY ) |
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| 183 | return -1; |
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| 184 | |
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| 185 | self = roar_mm_malloc(sizeof(struct codecfilter_flac_inst)); |
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| 186 | |
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| 187 | if (self == NULL) |
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| 188 | return -1; |
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| 189 | |
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| 190 | memset(self, 0, sizeof(struct codecfilter_flac_inst)); |
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| 191 | |
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| 192 | self->ss = info; |
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| 193 | |
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| 194 | self->decoder.decoder = FLAC__stream_decoder_new(); |
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| 195 | |
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| 196 | if ( self->decoder.decoder == NULL ) { |
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| 197 | roar_mm_free(self); |
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| 198 | return -1; |
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| 199 | } |
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| 200 | |
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| 201 | FLAC__stream_decoder_set_read_callback(self->decoder.decoder, cf_flac_cb_read); |
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| 202 | FLAC__stream_decoder_set_write_callback(self->decoder.decoder, cf_flac_cb_write); |
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| 203 | FLAC__stream_decoder_set_metadata_callback(self->decoder.decoder, cf_flac_cb_metadata); |
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| 204 | FLAC__stream_decoder_set_error_callback(self->decoder.decoder, cf_flac_cb_error); |
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| 205 | FLAC__stream_decoder_set_client_data(self->decoder.decoder, self); |
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| 206 | |
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[4592] | 207 | FLAC__stream_decoder_set_metadata_respond(self->decoder.decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT); |
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| 208 | |
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[4590] | 209 | FLAC__stream_decoder_init(self->decoder.decoder); |
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| 210 | |
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| 211 | *inst = self; |
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| 212 | |
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| 213 | return 0; |
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| 214 | } |
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| 215 | |
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| 216 | int cf_flac_close(CODECFILTER_USERDATA_T inst) { |
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| 217 | struct codecfilter_flac_inst * self = inst; |
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| 218 | |
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| 219 | if ( self->decoder.decoder != NULL ) { |
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| 220 | FLAC__stream_decoder_delete(self->decoder.decoder); |
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| 221 | } |
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| 222 | |
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| 223 | roar_mm_free(self); |
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| 224 | |
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| 225 | return 0; |
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| 226 | } |
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| 227 | |
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| 228 | int cf_flac_write(CODECFILTER_USERDATA_T inst, char * buf, int len); |
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| 229 | |
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| 230 | int cf_flac_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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| 231 | struct codecfilter_flac_inst * self = inst; |
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| 232 | struct roar_audio_info * info = &(ROAR_STREAM(self->ss)->info); |
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| 233 | struct roar_buffer_stats stats; |
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| 234 | size_t ret; |
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| 235 | FLAC__StreamDecoderState state; |
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| 236 | |
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| 237 | if ( self->decoder.written == NULL ) { |
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| 238 | stats.bytes = 0; |
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| 239 | } else { |
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| 240 | roar_buffer_ring_stats(self->decoder.written, &stats); |
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| 241 | } |
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| 242 | |
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| 243 | self->decoder.readret = 1; |
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| 244 | self->decoder.readc = 0; |
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| 245 | |
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| 246 | while ( self->decoder.readret > 0 && stats.bytes < len ) { |
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| 247 | if ( !FLAC__stream_decoder_process_single(self->decoder.decoder) ) { |
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| 248 | break; |
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| 249 | } |
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| 250 | |
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| 251 | state = FLAC__stream_decoder_get_state(self->decoder.decoder); |
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| 252 | |
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[4594] | 253 | if ( state == FLAC__STREAM_DECODER_END_OF_STREAM || state == FLAC__STREAM_DECODER_ABORTED ) |
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[4590] | 254 | break; |
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| 255 | |
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| 256 | if ( self->decoder.written == NULL && state == FLAC__STREAM_DECODER_READ_FRAME ) { |
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| 257 | return -1; |
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| 258 | } |
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| 259 | |
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| 260 | roar_buffer_ring_stats(self->decoder.written, &stats); |
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| 261 | } |
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| 262 | |
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| 263 | if ( stats.bytes ) { |
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| 264 | ret = len; |
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| 265 | |
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| 266 | if ( roar_buffer_shift_out(&(self->decoder.written), buf, &ret) == -1 ) { |
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| 267 | return -1; |
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| 268 | } |
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| 269 | |
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| 270 | info->codec = ROAR_CODEC_DEFAULT; |
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| 271 | info->bits = 32; |
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| 272 | info->channels = FLAC__stream_decoder_get_channels(self->decoder.decoder); |
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| 273 | info->rate = FLAC__stream_decoder_get_sample_rate(self->decoder.decoder); |
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| 274 | |
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| 275 | return ret; |
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| 276 | } else { |
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| 277 | return self->decoder.readret == -1 ? -1 : 0; |
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| 278 | } |
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| 279 | } |
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| 280 | |
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| 281 | int cf_flac_ctl(CODECFILTER_USERDATA_T inst, int cmd, void * data); |
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| 282 | |
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| 283 | #endif |
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| 284 | |
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| 285 | //ll |
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