diff options
Diffstat (limited to 'src/encoder/twolame_encoder.c')
-rw-r--r-- | src/encoder/twolame_encoder.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/src/encoder/twolame_encoder.c b/src/encoder/twolame_encoder.c deleted file mode 100644 index 934b2ab24..000000000 --- a/src/encoder/twolame_encoder.c +++ /dev/null @@ -1,308 +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 "encoder_api.h" -#include "encoder_plugin.h" -#include "audio_format.h" - -#include <twolame.h> -#include <assert.h> -#include <string.h> - -struct twolame_encoder { - struct encoder encoder; - - struct audio_format audio_format; - float quality; - int bitrate; - - twolame_options *options; - - unsigned char buffer[32768]; - size_t buffer_length; - - /** - * Call libtwolame's flush function when the buffer is empty? - */ - bool flush; -}; - -extern const struct encoder_plugin twolame_encoder_plugin; - -static inline GQuark -twolame_encoder_quark(void) -{ - return g_quark_from_static_string("twolame_encoder"); -} - -static bool -twolame_encoder_configure(struct twolame_encoder *encoder, - const struct config_param *param, GError **error) -{ - const char *value; - char *endptr; - - value = config_get_block_string(param, "quality", NULL); - if (value != NULL) { - /* a quality was configured (VBR) */ - - encoder->quality = g_ascii_strtod(value, &endptr); - - if (*endptr != '\0' || encoder->quality < -1.0 || - encoder->quality > 10.0) { - g_set_error(error, twolame_encoder_quark(), 0, - "quality \"%s\" is not a number in the " - "range -1 to 10, line %i", - value, param->line); - return false; - } - - if (config_get_block_string(param, "bitrate", NULL) != NULL) { - g_set_error(error, twolame_encoder_quark(), 0, - "quality and bitrate are " - "both defined (line %i)", - param->line); - return false; - } - } else { - /* a bit rate was configured */ - - value = config_get_block_string(param, "bitrate", NULL); - if (value == NULL) { - g_set_error(error, twolame_encoder_quark(), 0, - "neither bitrate nor quality defined " - "at line %i", - param->line); - return false; - } - - encoder->quality = -2.0; - encoder->bitrate = g_ascii_strtoll(value, &endptr, 10); - - if (*endptr != '\0' || encoder->bitrate <= 0) { - g_set_error(error, twolame_encoder_quark(), 0, - "bitrate at line %i should be a positive integer", - param->line); - return false; - } - } - - return true; -} - -static struct encoder * -twolame_encoder_init(const struct config_param *param, GError **error) -{ - struct twolame_encoder *encoder; - - g_debug("libtwolame version %s", get_twolame_version()); - - encoder = g_new(struct twolame_encoder, 1); - encoder_struct_init(&encoder->encoder, &twolame_encoder_plugin); - - /* load configuration from "param" */ - if (!twolame_encoder_configure(encoder, param, error)) { - /* configuration has failed, roll back and return error */ - g_free(encoder); - return NULL; - } - - return &encoder->encoder; -} - -static void -twolame_encoder_finish(struct encoder *_encoder) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - - /* the real libtwolame cleanup was already performed by - twolame_encoder_close(), so no real work here */ - g_free(encoder); -} - -static bool -twolame_encoder_setup(struct twolame_encoder *encoder, GError **error) -{ - if (encoder->quality >= -1.0) { - /* a quality was configured (VBR) */ - - if (0 != twolame_set_VBR(encoder->options, true)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error setting twolame VBR mode"); - return false; - } - if (0 != twolame_set_VBR_q(encoder->options, encoder->quality)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error setting twolame VBR quality"); - return false; - } - } else { - /* a bit rate was configured */ - - if (0 != twolame_set_brate(encoder->options, encoder->bitrate)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error setting twolame bitrate"); - return false; - } - } - - if (0 != twolame_set_num_channels(encoder->options, - encoder->audio_format.channels)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error setting twolame num channels"); - return false; - } - - if (0 != twolame_set_in_samplerate(encoder->options, - encoder->audio_format.sample_rate)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error setting twolame sample rate"); - return false; - } - - if (0 > twolame_init_params(encoder->options)) { - g_set_error(error, twolame_encoder_quark(), 0, - "error initializing twolame params"); - return false; - } - - return true; -} - -static bool -twolame_encoder_open(struct encoder *_encoder, struct audio_format *audio_format, - GError **error) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - - audio_format->format = SAMPLE_FORMAT_S16; - audio_format->channels = 2; - - encoder->audio_format = *audio_format; - - encoder->options = twolame_init(); - if (encoder->options == NULL) { - g_set_error(error, twolame_encoder_quark(), 0, - "twolame_init() failed"); - return false; - } - - if (!twolame_encoder_setup(encoder, error)) { - twolame_close(&encoder->options); - return false; - } - - encoder->buffer_length = 0; - encoder->flush = false; - - return true; -} - -static void -twolame_encoder_close(struct encoder *_encoder) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - - twolame_close(&encoder->options); -} - -static bool -twolame_encoder_flush(struct encoder *_encoder, G_GNUC_UNUSED GError **error) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - - encoder->flush = true; - return true; -} - -static bool -twolame_encoder_write(struct encoder *_encoder, - const void *data, size_t length, - G_GNUC_UNUSED GError **error) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - unsigned num_frames; - const int16_t *src = (const int16_t*)data; - int bytes_out; - - assert(encoder->buffer_length == 0); - - num_frames = - length / audio_format_frame_size(&encoder->audio_format); - - bytes_out = twolame_encode_buffer_interleaved(encoder->options, - src, num_frames, - encoder->buffer, - sizeof(encoder->buffer)); - if (bytes_out < 0) { - g_set_error(error, twolame_encoder_quark(), 0, - "twolame encoder failed"); - return false; - } - - encoder->buffer_length = (size_t)bytes_out; - return true; -} - -static size_t -twolame_encoder_read(struct encoder *_encoder, void *dest, size_t length) -{ - struct twolame_encoder *encoder = (struct twolame_encoder *)_encoder; - - if (encoder->buffer_length == 0 && encoder->flush) { - int ret = twolame_encode_flush(encoder->options, - encoder->buffer, - sizeof(encoder->buffer)); - if (ret > 0) - encoder->buffer_length = (size_t)ret; - - encoder->flush = false; - } - - if (length > encoder->buffer_length) - length = encoder->buffer_length; - - memcpy(dest, encoder->buffer, length); - - encoder->buffer_length -= length; - memmove(encoder->buffer, encoder->buffer + length, - encoder->buffer_length); - - return length; -} - -static const char * -twolame_encoder_get_mime_type(G_GNUC_UNUSED struct encoder *_encoder) -{ - return "audio/mpeg"; -} - -const struct encoder_plugin twolame_encoder_plugin = { - .name = "twolame", - .init = twolame_encoder_init, - .finish = twolame_encoder_finish, - .open = twolame_encoder_open, - .close = twolame_encoder_close, - .end = twolame_encoder_flush, - .flush = twolame_encoder_flush, - .write = twolame_encoder_write, - .read = twolame_encoder_read, - .get_mime_type = twolame_encoder_get_mime_type, -}; 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