diff options
| -rw-r--r-- | Makefile.am | 6 | ||||
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | configure.ac | 25 | ||||
| -rw-r--r-- | src/encoder/twolame_encoder.c | 299 | ||||
| -rw-r--r-- | src/encoder_list.c | 4 |
5 files changed, 335 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 7b16b111..5c53ca5c 100644 --- a/Makefile.am +++ b/Makefile.am @@ -432,10 +432,12 @@ endif ENCODER_CFLAGS = \ $(LAME_CFLAGS) \ + $(TWOLAME_CFLAGS) \ $(VORBISENC_CFLAGS) ENCODER_LIBS = \ $(LAME_LIBS) \ + $(TWOLAME_LIBS) \ $(VORBISENC_LIBS) ENCODER_SRC = @@ -450,6 +452,10 @@ endif if ENABLE_LAME_ENCODER ENCODER_SRC += src/encoder/lame_encoder.c endif + +if ENABLE_TWOLAME_ENCODER +ENCODER_SRC += src/encoder/twolame_encoder.c +endif endif @@ -10,6 +10,8 @@ ver 0.16 (20??/??/??) - ffmpeg: support multiple tags - sndfile: new decoder plugin based on libsndfile - flac: load external cue sheet when no internal one +* encoders: + - twolame: new encoder plugin based on libtwolame * mixers: - removed support for legacy mixer configuration - reimplemented software volume as mixer+filter plugin diff --git a/configure.ac b/configure.ac index 27251e42..c3a780dc 100644 --- a/configure.ac +++ b/configure.ac @@ -618,6 +618,11 @@ AC_ARG_ENABLE(lame-encoder, [enable the LAME mp3 encoder]),, enable_lame_encoder=auto) +AC_ARG_ENABLE(twolame-encoder, + AS_HELP_STRING([--enable-twolame-encoder], + [enable the TwoLAME mp2 encoder]),, + enable_twolame_encoder=auto) + dnl dnl audio output plugins @@ -1002,6 +1007,7 @@ else # don't bother to check for encoder plugins enable_vorbis_encoder=no enable_lame_encoder=no + enable_twolame_encoder=no fi MPD_AUTO_PKG(vorbis_encoder, VORBISENC, [vorbisenc], @@ -1016,8 +1022,12 @@ fi AC_SUBST(LAME_CFLAGS) AC_SUBST(LAME_LIBS) +MPD_AUTO_PKG(twolame_encoder, TWOLAME, [twolame], + [TwoLAME encoder], [libtwolame not found]) + if test x$enable_vorbis_encoder != xno || - test x$enable_lame_encoder != xno; then + test x$enable_lame_encoder != xno || + test x$enable_twolame_encoder != xno; then # at least one encoder plugin is enabled enable_encoder=yes else @@ -1076,6 +1086,12 @@ if test x$enable_lame_encoder = xyes; then [Define to enable the lame encoder plugin]) fi +AM_CONDITIONAL(ENABLE_TWOLAME_ENCODER, test x$enable_twolame_encoder = xyes) +if test x$enable_twolame_encoder = xyes; then + AC_DEFINE(ENABLE_TWOLAME_ENCODER, 1, + [Define to enable the TwoLAME encoder plugin]) +fi + dnl dnl Documentation @@ -1305,6 +1321,13 @@ if else echo " Ogg Vorbis encoder ............disabled" fi + + if test x$enable_twolame_encoder = xyes; then + echo " TwoLAME mp3 encoder ...........enabled" + else + echo " TwoLAME mp3 encoder ...........disabled" + fi + echo "" fi diff --git a/src/encoder/twolame_encoder.c b/src/encoder/twolame_encoder.c new file mode 100644 index 00000000..5a8a82d8 --- /dev/null +++ b/src/encoder/twolame_encoder.c @@ -0,0 +1,299 @@ +/* + * Copyright (C) 2003-2009 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 "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->bits = 16; + 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; +} + +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, + .flush = twolame_encoder_flush, + .write = twolame_encoder_write, + .read = twolame_encoder_read, +}; diff --git a/src/encoder_list.c b/src/encoder_list.c index d563b6bc..2016d4cb 100644 --- a/src/encoder_list.c +++ b/src/encoder_list.c @@ -25,6 +25,7 @@ extern const struct encoder_plugin vorbis_encoder_plugin; extern const struct encoder_plugin lame_encoder_plugin; +extern const struct encoder_plugin twolame_encoder_plugin; static const struct encoder_plugin *encoder_plugins[] = { #ifdef ENABLE_VORBIS_ENCODER @@ -33,6 +34,9 @@ static const struct encoder_plugin *encoder_plugins[] = { #ifdef ENABLE_LAME_ENCODER &lame_encoder_plugin, #endif +#ifdef ENABLE_TWOLAME_ENCODER + &twolame_encoder_plugin, +#endif NULL }; |