forked from len0rd/rockbox
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius <nils@rockbox.org> Tested-by: Nils Wallménius <nils@rockbox.org>
This commit is contained in:
Sean Bartell
Nils Wallménius
parent
a0009907de
commit
f40bfc9267
757 changed files with 122 additions and 122 deletions
255
lib/rbcodec/codecs/libmusepack/streaminfo.c
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255
lib/rbcodec/codecs/libmusepack/streaminfo.c
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/*
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Copyright (c) 2005-2009, The Musepack Development Team
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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* Neither the name of the The Musepack Development Team nor the
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names of its contributors may be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/// \file streaminfo.c
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/// Implementation of streaminfo reading functions.
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#include <math.h>
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#include "mpcdec.h"
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#include "streaminfo.h"
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#include <stdio.h>
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#include "internal.h"
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#include "huffman.h"
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#include "mpc_bits_reader.h"
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/* rockbox: not used
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static const char na[] = "n.a.";
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static char const * const versionNames[] = {
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na, "'Unstable/Experimental'", na, na, na, "'quality 0'", "'quality 1'",
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"'Telephone'", "'Thumb'", "'Radio'", "'Standard'", "'Extreme'", "'Insane'",
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"'BrainDead'", "'quality 9'", "'quality 10'"
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};
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*/
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static const mpc_int32_t samplefreqs[8] = { 44100, 48000, 37800, 32000 };
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/* rockbox: not used
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static const char *
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mpc_get_version_string(float profile) // profile is 0...15, where 7...13 is used
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{
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return profile >= sizeof versionNames / sizeof *versionNames ? na : versionNames[(int)profile];
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}
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*/
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/* rockbox: not used
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static void
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mpc_get_encoder_string(mpc_streaminfo* si)
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{
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int ver = si->encoder_version;
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if (si->stream_version >= 8)
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ver = (si->encoder_version >> 24) * 100 + ((si->encoder_version >> 16) & 0xFF);
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if (ver <= 116) {
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if (ver == 0) {
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sprintf(si->encoder, "Buschmann 1.7.0...9, Klemm 0.90...1.05");
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} else {
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switch (ver % 10) {
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case 0:
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sprintf(si->encoder, "Release %u.%u", ver / 100,
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ver / 10 % 10);
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break;
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case 2: case 4: case 6: case 8:
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sprintf(si->encoder, "Beta %u.%02u", ver / 100,
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ver % 100);
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break;
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default:
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sprintf(si->encoder, "--Alpha-- %u.%02u",
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ver / 100, ver % 100);
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break;
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}
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}
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} else {
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int major = si->encoder_version >> 24;
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int minor = (si->encoder_version >> 16) & 0xFF;
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int build = (si->encoder_version >> 8) & 0xFF;
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char * tmp = "--Stable--";
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if (minor & 1)
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tmp = "--Unstable--";
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sprintf(si->encoder, "%s %u.%u.%u", tmp, major, minor, build);
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}
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}
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*/
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static mpc_status check_streaminfo(mpc_streaminfo * si)
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{
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if (si->max_band == 0 || si->max_band >= 32
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|| si->channels > 2 || si->channels == 0 || si->sample_freq == 0)
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return MPC_STATUS_FAIL;
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return MPC_STATUS_OK;
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}
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/// Reads streaminfo from SV7 header.
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mpc_status
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streaminfo_read_header_sv7(mpc_streaminfo* si, mpc_bits_reader * r)
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{
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mpc_uint32_t frames, last_frame_samples;
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si->bitrate = 0;
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frames = (mpc_bits_read(r, 16) << 16) | mpc_bits_read(r, 16);
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mpc_bits_read(r, 1); // intensity stereo : should be 0
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si->ms = mpc_bits_read(r, 1);
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si->max_band = mpc_bits_read(r, 6);
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si->profile = mpc_bits_read(r, 4);
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/* rockbox: not used
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si->profile_name = mpc_get_version_string(si->profile);
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*/
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mpc_bits_read(r, 2); // Link ?
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si->sample_freq = samplefreqs[mpc_bits_read(r, 2)];
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mpc_bits_read(r, 16); // Estimatedpeak_title
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si->gain_title = (mpc_uint16_t) mpc_bits_read(r, 16);
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si->peak_title = (mpc_uint16_t) mpc_bits_read(r, 16);
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si->gain_album = (mpc_uint16_t) mpc_bits_read(r, 16);
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si->peak_album = (mpc_uint16_t) mpc_bits_read(r, 16);
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si->is_true_gapless = mpc_bits_read(r, 1); // true gapless: used?
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last_frame_samples = mpc_bits_read(r, 11); // true gapless: valid samples for last frame
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si->fast_seek = mpc_bits_read(r, 1); // fast seeking
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mpc_bits_read(r, 19); // unused
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si->encoder_version = mpc_bits_read(r, 8);
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si->channels = 2;
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si->block_pwr = 0;
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/* rockbox: not used
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// convert gain info
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if (si->gain_title != 0) {
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int tmp = (int)((MPC_OLD_GAIN_REF - (mpc_int16_t)si->gain_title / 100.) * 256. + .5);
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if (tmp >= (1 << 16) || tmp < 0) tmp = 0;
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si->gain_title = (mpc_int16_t) tmp;
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}
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if (si->gain_album != 0) {
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int tmp = (int)((MPC_OLD_GAIN_REF - (mpc_int16_t)si->gain_album / 100.) * 256. + .5);
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if (tmp >= (1 << 16) || tmp < 0) tmp = 0;
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si->gain_album = (mpc_int16_t) tmp;
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}
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if (si->peak_title != 0)
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si->peak_title = (mpc_uint16_t) (log10(si->peak_title) * 20 * 256 + .5);
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if (si->peak_album != 0)
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si->peak_album = (mpc_uint16_t) (log10(si->peak_album) * 20 * 256 + .5);
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mpc_get_encoder_string(si);
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*/
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if (last_frame_samples == 0) last_frame_samples = MPC_FRAME_LENGTH;
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else if (last_frame_samples > MPC_FRAME_LENGTH) return MPC_STATUS_FAIL;
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si->samples = (mpc_int64_t) frames * MPC_FRAME_LENGTH;
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if (si->is_true_gapless)
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si->samples -= (MPC_FRAME_LENGTH - last_frame_samples);
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else
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si->samples -= MPC_DECODER_SYNTH_DELAY;
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si->average_bitrate = 8LL * (si->tag_offset - si->header_position)
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* si->sample_freq / si->samples;
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return check_streaminfo(si);
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}
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/// Reads replay gain datas
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void streaminfo_gain(mpc_streaminfo* si, const mpc_bits_reader * r_in)
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{
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mpc_bits_reader r = *r_in;
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int version = mpc_bits_read(&r, 8); // gain version
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if (version != 1) // we only know ver 1
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return;
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si->gain_title = (mpc_uint16_t) mpc_bits_read(&r, 16);
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si->peak_title = (mpc_uint16_t) mpc_bits_read(&r, 16);
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si->gain_album = (mpc_uint16_t) mpc_bits_read(&r, 16);
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si->peak_album = (mpc_uint16_t) mpc_bits_read(&r, 16);
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}
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/// Reads streaminfo from SV8 header.
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mpc_status
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streaminfo_read_header_sv8(mpc_streaminfo* si, const mpc_bits_reader * r_in,
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mpc_size_t block_size)
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{
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mpc_uint32_t CRC;
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mpc_bits_reader r = *r_in;
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CRC = (mpc_bits_read(&r, 16) << 16) | mpc_bits_read(&r, 16);
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if (CRC != mpc_crc32(r.buff + 1 - (r.count >> 3), (int)block_size - 4))
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return MPC_STATUS_FAIL;
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si->stream_version = mpc_bits_read(&r, 8);
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if (si->stream_version != 8)
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return MPC_STATUS_FAIL;
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mpc_bits_get_size(&r, &si->samples);
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mpc_bits_get_size(&r, &si->beg_silence);
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si->is_true_gapless = 1;
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si->sample_freq = samplefreqs[mpc_bits_read(&r, 3)];
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si->max_band = mpc_bits_read(&r, 5) + 1;
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si->channels = mpc_bits_read(&r, 4) + 1;
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si->ms = mpc_bits_read(&r, 1);
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si->block_pwr = mpc_bits_read(&r, 3) * 2;
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si->bitrate = 0;
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if ((si->samples - si->beg_silence) != 0)
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si->average_bitrate = 8LL * (si->tag_offset - si->header_position)
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* si->sample_freq / (si->samples - si->beg_silence);
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return check_streaminfo(si);
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}
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/// Reads encoder informations
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void streaminfo_encoder_info(mpc_streaminfo* si, const mpc_bits_reader * r_in)
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{
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mpc_bits_reader r = *r_in;
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si->profile = mpc_bits_read(&r, 7); // to be divided by 8
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/* rockbox: not used
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si->profile_name = mpc_get_version_string(si->profile);
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*/
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si->pns = mpc_bits_read(&r, 1);
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si->encoder_version = mpc_bits_read(&r, 8) << 24; // major
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si->encoder_version |= mpc_bits_read(&r, 8) << 16; // minor
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si->encoder_version |= mpc_bits_read(&r, 8) << 8; // build
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/* rockbox: not used
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mpc_get_encoder_string(si);
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*/
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}
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/* rockbox: not used
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double
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mpc_streaminfo_get_length(mpc_streaminfo * si)
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{
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return (double) (si->samples - si->beg_silence) / si->sample_freq;
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}
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mpc_int64_t mpc_streaminfo_get_length_samples(mpc_streaminfo *si)
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{
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return si->samples - si->beg_silence;
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}
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*/
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