diff options
Diffstat (limited to 'src/decoder/wavpack_decoder_plugin.c')
| -rw-r--r-- | src/decoder/wavpack_decoder_plugin.c | 600 |
1 files changed, 0 insertions, 600 deletions
diff --git a/src/decoder/wavpack_decoder_plugin.c b/src/decoder/wavpack_decoder_plugin.c deleted file mode 100644 index ae85b0e2..00000000 --- a/src/decoder/wavpack_decoder_plugin.c +++ /dev/null @@ -1,600 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "decoder_api.h" -#include "audio_check.h" -#include "path.h" -#include "utils.h" -#include "tag_table.h" -#include "tag_handler.h" - -#include <wavpack/wavpack.h> -#include <glib.h> - -#include <assert.h> -#include <unistd.h> -#include <stdio.h> -#include <stdlib.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "wavpack" - -#define ERRORLEN 80 - -static const struct tag_table wavpack_tags[] = { - { "artist", TAG_ARTIST }, - { "album", TAG_ALBUM }, - { "title", TAG_TITLE }, - { "track", TAG_TRACK }, - { "name", TAG_NAME }, - { "genre", TAG_GENRE }, - { "date", TAG_DATE }, - { "composer", TAG_COMPOSER }, - { "performer", TAG_PERFORMER }, - { "comment", TAG_COMMENT }, - { "disc", TAG_DISC }, - { NULL, TAG_NUM_OF_ITEM_TYPES } -}; - -/** A pointer type for format converter function. */ -typedef void (*format_samples_t)( - int bytes_per_sample, - void *buffer, uint32_t count -); - -/* - * This function has been borrowed from the tiny player found on - * wavpack.com. Modifications were required because mpd only handles - * max 24-bit samples. - */ -static void -format_samples_int(int bytes_per_sample, void *buffer, uint32_t count) -{ - int32_t *src = buffer; - - switch (bytes_per_sample) { - case 1: { - int8_t *dst = buffer; - /* - * The asserts like the following one are because we do the - * formatting of samples within a single buffer. The size - * of the output samples never can be greater than the size - * of the input ones. Otherwise we would have an overflow. - */ - assert_static(sizeof(*dst) <= sizeof(*src)); - - /* pass through and align 8-bit samples */ - while (count--) { - *dst++ = *src++; - } - break; - } - case 2: { - uint16_t *dst = buffer; - assert_static(sizeof(*dst) <= sizeof(*src)); - - /* pass through and align 16-bit samples */ - while (count--) { - *dst++ = *src++; - } - break; - } - - case 3: - case 4: - /* do nothing */ - break; - } -} - -/* - * This function converts floating point sample data to 24-bit integer. - */ -static void -format_samples_float(G_GNUC_UNUSED int bytes_per_sample, void *buffer, - uint32_t count) -{ - float *p = buffer; - - while (count--) { - *p /= (1 << 23); - ++p; - } -} - -/** - * Choose a MPD sample format from libwavpacks' number of bits. - */ -static enum sample_format -wavpack_bits_to_sample_format(bool is_float, int bytes_per_sample) -{ - if (is_float) - return SAMPLE_FORMAT_FLOAT; - - switch (bytes_per_sample) { - case 1: - return SAMPLE_FORMAT_S8; - - case 2: - return SAMPLE_FORMAT_S16; - - case 3: - return SAMPLE_FORMAT_S24_P32; - - case 4: - return SAMPLE_FORMAT_S32; - - default: - return SAMPLE_FORMAT_UNDEFINED; - } -} - -/* - * This does the main decoding thing. - * Requires an already opened WavpackContext. - */ -static void -wavpack_decode(struct decoder *decoder, WavpackContext *wpc, bool can_seek) -{ - GError *error = NULL; - bool is_float; - enum sample_format sample_format; - struct audio_format audio_format; - format_samples_t format_samples; - float total_time; - int bytes_per_sample, output_sample_size; - - is_float = (WavpackGetMode(wpc) & MODE_FLOAT) != 0; - sample_format = - wavpack_bits_to_sample_format(is_float, - WavpackGetBytesPerSample(wpc)); - - if (!audio_format_init_checked(&audio_format, - WavpackGetSampleRate(wpc), - sample_format, - WavpackGetNumChannels(wpc), &error)) { - g_warning("%s", error->message); - g_error_free(error); - return; - } - - if (is_float) { - format_samples = format_samples_float; - } else { - format_samples = format_samples_int; - } - - total_time = WavpackGetNumSamples(wpc); - total_time /= audio_format.sample_rate; - bytes_per_sample = WavpackGetBytesPerSample(wpc); - output_sample_size = audio_format_frame_size(&audio_format); - - /* wavpack gives us all kind of samples in a 32-bit space */ - int32_t chunk[1024]; - const uint32_t samples_requested = G_N_ELEMENTS(chunk) / - audio_format.channels; - - decoder_initialized(decoder, &audio_format, can_seek, total_time); - - enum decoder_command cmd = decoder_get_command(decoder); - while (cmd != DECODE_COMMAND_STOP) { - if (cmd == DECODE_COMMAND_SEEK) { - if (can_seek) { - unsigned where = decoder_seek_where(decoder) * - audio_format.sample_rate; - - if (WavpackSeekSample(wpc, where)) { - decoder_command_finished(decoder); - } else { - decoder_seek_error(decoder); - } - } else { - decoder_seek_error(decoder); - } - } - - uint32_t samples_got = WavpackUnpackSamples(wpc, chunk, - samples_requested); - if (samples_got == 0) - break; - - int bitrate = (int)(WavpackGetInstantBitrate(wpc) / 1000 + - 0.5); - format_samples(bytes_per_sample, chunk, - samples_got * audio_format.channels); - - cmd = decoder_data(decoder, NULL, chunk, - samples_got * output_sample_size, - bitrate); - } -} - -/** - * Locate and parse a floating point tag. Returns true if it was - * found. - */ -static bool -wavpack_tag_float(WavpackContext *wpc, const char *key, float *value_r) -{ - char buffer[64]; - int ret; - - ret = WavpackGetTagItem(wpc, key, buffer, sizeof(buffer)); - if (ret <= 0) - return false; - - *value_r = atof(buffer); - return true; -} - -static bool -wavpack_replaygain(struct replay_gain_info *replay_gain_info, - WavpackContext *wpc) -{ - bool found = false; - - replay_gain_info_init(replay_gain_info); - - found |= wavpack_tag_float( - wpc, "replaygain_track_gain", - &replay_gain_info->tuples[REPLAY_GAIN_TRACK].gain - ); - found |= wavpack_tag_float( - wpc, "replaygain_track_peak", - &replay_gain_info->tuples[REPLAY_GAIN_TRACK].peak - ); - found |= wavpack_tag_float( - wpc, "replaygain_album_gain", - &replay_gain_info->tuples[REPLAY_GAIN_ALBUM].gain - ); - found |= wavpack_tag_float( - wpc, "replaygain_album_peak", - &replay_gain_info->tuples[REPLAY_GAIN_ALBUM].peak - ); - - return found; -} - -static void -wavpack_scan_tag_item(WavpackContext *wpc, const char *name, - enum tag_type type, - const struct tag_handler *handler, void *handler_ctx) -{ - char buffer[1024]; - int len = WavpackGetTagItem(wpc, name, buffer, sizeof(buffer)); - if (len <= 0 || (unsigned)len >= sizeof(buffer)) - return; - - tag_handler_invoke_tag(handler, handler_ctx, type, buffer); - -} - -static void -wavpack_scan_pair(WavpackContext *wpc, const char *name, - const struct tag_handler *handler, void *handler_ctx) -{ - char buffer[8192]; - int len = WavpackGetTagItem(wpc, name, buffer, sizeof(buffer)); - if (len <= 0 || (unsigned)len >= sizeof(buffer)) - return; - - tag_handler_invoke_pair(handler, handler_ctx, name, buffer); -} - -/* - * Reads metainfo from the specified file. - */ -static bool -wavpack_scan_file(const char *fname, - const struct tag_handler *handler, void *handler_ctx) -{ - WavpackContext *wpc; - char error[ERRORLEN]; - - wpc = WavpackOpenFileInput(fname, error, OPEN_TAGS, 0); - if (wpc == NULL) { - g_warning( - "failed to open WavPack file \"%s\": %s\n", - fname, error - ); - return false; - } - - tag_handler_invoke_duration(handler, handler_ctx, - WavpackGetNumSamples(wpc) / - WavpackGetSampleRate(wpc)); - - for (const struct tag_table *i = wavpack_tags; i->name != NULL; ++i) - wavpack_scan_tag_item(wpc, i->name, i->type, - handler, handler_ctx); - - if (handler->pair != NULL) { - char name[64]; - - for (int i = 0, n = WavpackGetNumTagItems(wpc); - i < n; ++i) { - int len = WavpackGetTagItemIndexed(wpc, i, name, - sizeof(name)); - if (len <= 0 || (unsigned)len >= sizeof(name)) - continue; - - wavpack_scan_pair(wpc, name, handler, handler_ctx); - } - } - - WavpackCloseFile(wpc); - - return true; -} - -/* - * mpd input_stream <=> WavpackStreamReader wrapper callbacks - */ - -/* This struct is needed for per-stream last_byte storage. */ -struct wavpack_input { - struct decoder *decoder; - struct input_stream *is; - /* Needed for push_back_byte() */ - int last_byte; -}; - -/** - * Little wrapper for struct wavpack_input to cast from void *. - */ -static struct wavpack_input * -wpin(void *id) -{ - assert(id); - return id; -} - -static int32_t -wavpack_input_read_bytes(void *id, void *data, int32_t bcount) -{ - uint8_t *buf = (uint8_t *)data; - int32_t i = 0; - - if (wpin(id)->last_byte != EOF) { - *buf++ = wpin(id)->last_byte; - wpin(id)->last_byte = EOF; - --bcount; - ++i; - } - - /* wavpack fails if we return a partial read, so we just wait - until the buffer is full */ - while (bcount > 0) { - size_t nbytes = decoder_read( - wpin(id)->decoder, wpin(id)->is, buf, bcount - ); - if (nbytes == 0) { - /* EOF, error or a decoder command */ - break; - } - - i += nbytes; - bcount -= nbytes; - buf += nbytes; - } - - return i; -} - -static uint32_t -wavpack_input_get_pos(void *id) -{ - return wpin(id)->is->offset; -} - -static int -wavpack_input_set_pos_abs(void *id, uint32_t pos) -{ - return input_stream_lock_seek(wpin(id)->is, pos, SEEK_SET, NULL) - ? 0 : -1; -} - -static int -wavpack_input_set_pos_rel(void *id, int32_t delta, int mode) -{ - return input_stream_lock_seek(wpin(id)->is, delta, mode, NULL) - ? 0 : -1; -} - -static int -wavpack_input_push_back_byte(void *id, int c) -{ - if (wpin(id)->last_byte == EOF) { - wpin(id)->last_byte = c; - return c; - } else { - return EOF; - } -} - -static uint32_t -wavpack_input_get_length(void *id) -{ - if (wpin(id)->is->size < 0) - return 0; - - return wpin(id)->is->size; -} - -static int -wavpack_input_can_seek(void *id) -{ - return wpin(id)->is->seekable; -} - -static WavpackStreamReader mpd_is_reader = { - .read_bytes = wavpack_input_read_bytes, - .get_pos = wavpack_input_get_pos, - .set_pos_abs = wavpack_input_set_pos_abs, - .set_pos_rel = wavpack_input_set_pos_rel, - .push_back_byte = wavpack_input_push_back_byte, - .get_length = wavpack_input_get_length, - .can_seek = wavpack_input_can_seek, - .write_bytes = NULL /* no need to write edited tags */ -}; - -static void -wavpack_input_init(struct wavpack_input *isp, struct decoder *decoder, - struct input_stream *is) -{ - isp->decoder = decoder; - isp->is = is; - isp->last_byte = EOF; -} - -static struct input_stream * -wavpack_open_wvc(struct decoder *decoder, const char *uri, - GMutex *mutex, GCond *cond, - struct wavpack_input *wpi) -{ - struct input_stream *is_wvc; - char *wvc_url = NULL; - char first_byte; - size_t nbytes; - - /* - * As we use dc->utf8url, this function will be bad for - * single files. utf8url is not absolute file path :/ - */ - if (uri == NULL) - return false; - - wvc_url = g_strconcat(uri, "c", NULL); - is_wvc = input_stream_open(wvc_url, mutex, cond, NULL); - g_free(wvc_url); - - if (is_wvc == NULL) - return NULL; - - /* - * And we try to buffer in order to get know - * about a possible 404 error. - */ - nbytes = decoder_read( - decoder, is_wvc, &first_byte, sizeof(first_byte) - ); - if (nbytes == 0) { - input_stream_close(is_wvc); - return NULL; - } - - /* push it back */ - wavpack_input_init(wpi, decoder, is_wvc); - wpi->last_byte = first_byte; - return is_wvc; -} - -/* - * Decodes a stream. - */ -static void -wavpack_streamdecode(struct decoder * decoder, struct input_stream *is) -{ - char error[ERRORLEN]; - WavpackContext *wpc; - struct input_stream *is_wvc; - int open_flags = OPEN_NORMALIZE; - struct wavpack_input isp, isp_wvc; - bool can_seek = is->seekable; - - is_wvc = wavpack_open_wvc(decoder, is->uri, is->mutex, is->cond, - &isp_wvc); - if (is_wvc != NULL) { - open_flags |= OPEN_WVC; - can_seek &= is_wvc->seekable; - } - - if (!can_seek) { - open_flags |= OPEN_STREAMING; - } - - wavpack_input_init(&isp, decoder, is); - wpc = WavpackOpenFileInputEx( - &mpd_is_reader, &isp, - open_flags & OPEN_WVC ? &isp_wvc : NULL, - error, open_flags, 23 - ); - - if (wpc == NULL) { - g_warning("failed to open WavPack stream: %s\n", error); - return; - } - - wavpack_decode(decoder, wpc, can_seek); - - WavpackCloseFile(wpc); - if (open_flags & OPEN_WVC) { - input_stream_close(is_wvc); - } -} - -/* - * Decodes a file. - */ -static void -wavpack_filedecode(struct decoder *decoder, const char *fname) -{ - char error[ERRORLEN]; - WavpackContext *wpc; - - wpc = WavpackOpenFileInput( - fname, error, - OPEN_TAGS | OPEN_WVC | OPEN_NORMALIZE, 23 - ); - if (wpc == NULL) { - g_warning( - "failed to open WavPack file \"%s\": %s\n", - fname, error - ); - return; - } - - struct replay_gain_info replay_gain_info; - if (wavpack_replaygain(&replay_gain_info, wpc)) - decoder_replay_gain(decoder, &replay_gain_info); - - wavpack_decode(decoder, wpc, true); - - WavpackCloseFile(wpc); -} - -static char const *const wavpack_suffixes[] = { - "wv", - NULL -}; - -static char const *const wavpack_mime_types[] = { - "audio/x-wavpack", - NULL -}; - -const struct decoder_plugin wavpack_decoder_plugin = { - .name = "wavpack", - .stream_decode = wavpack_streamdecode, - .file_decode = wavpack_filedecode, - .scan_file = wavpack_scan_file, - .suffixes = wavpack_suffixes, - .mime_types = wavpack_mime_types -}; |