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Diffstat (limited to 'src/encoder/vorbis_encoder.c')
| -rw-r--r-- | src/encoder/vorbis_encoder.c | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/src/encoder/vorbis_encoder.c b/src/encoder/vorbis_encoder.c deleted file mode 100644 index 468cf38ee..000000000 --- a/src/encoder/vorbis_encoder.c +++ /dev/null @@ -1,407 +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 "tag.h" -#include "audio_format.h" -#include "mpd_error.h" - -#include <vorbis/vorbisenc.h> - -#include <assert.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "vorbis_encoder" - -struct vorbis_encoder { - /** the base class */ - struct encoder encoder; - - /* configuration */ - - float quality; - int bitrate; - - /* runtime information */ - - struct audio_format audio_format; - - ogg_stream_state os; - - vorbis_dsp_state vd; - vorbis_block vb; - vorbis_info vi; - - bool flush; -}; - -extern const struct encoder_plugin vorbis_encoder_plugin; - -static inline GQuark -vorbis_encoder_quark(void) -{ - return g_quark_from_static_string("vorbis_encoder"); -} - -static bool -vorbis_encoder_configure(struct vorbis_encoder *encoder, - const struct config_param *param, GError **error) -{ - const char *value = config_get_block_string(param, "quality", NULL); - if (value != NULL) { - /* a quality was configured (VBR) */ - - char *endptr; - encoder->quality = g_ascii_strtod(value, &endptr); - - if (*endptr != '\0' || encoder->quality < -1.0 || - encoder->quality > 10.0) { - g_set_error(error, vorbis_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, vorbis_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, vorbis_encoder_quark(), 0, - "neither bitrate nor quality defined " - "at line %i", - param->line); - return false; - } - - encoder->quality = -2.0; - - char *endptr; - encoder->bitrate = g_ascii_strtoll(value, &endptr, 10); - if (*endptr != '\0' || encoder->bitrate <= 0) { - g_set_error(error, vorbis_encoder_quark(), 0, - "bitrate at line %i should be a positive integer", - param->line); - return false; - } - } - - return true; -} - -static struct encoder * -vorbis_encoder_init(const struct config_param *param, GError **error) -{ - struct vorbis_encoder *encoder = g_new(struct vorbis_encoder, 1); - encoder_struct_init(&encoder->encoder, &vorbis_encoder_plugin); - - /* load configuration from "param" */ - if (!vorbis_encoder_configure(encoder, param, error)) { - /* configuration has failed, roll back and return error */ - g_free(encoder); - return NULL; - } - - return &encoder->encoder; -} - -static void -vorbis_encoder_finish(struct encoder *_encoder) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - /* the real libvorbis/libogg cleanup was already performed by - vorbis_encoder_close(), so no real work here */ - g_free(encoder); -} - -static bool -vorbis_encoder_reinit(struct vorbis_encoder *encoder, GError **error) -{ - vorbis_info_init(&encoder->vi); - - if (encoder->quality >= -1.0) { - /* a quality was configured (VBR) */ - - if (0 != vorbis_encode_init_vbr(&encoder->vi, - encoder->audio_format.channels, - encoder->audio_format.sample_rate, - encoder->quality * 0.1)) { - g_set_error(error, vorbis_encoder_quark(), 0, - "error initializing vorbis vbr"); - vorbis_info_clear(&encoder->vi); - return false; - } - } else { - /* a bit rate was configured */ - - if (0 != vorbis_encode_init(&encoder->vi, - encoder->audio_format.channels, - encoder->audio_format.sample_rate, -1.0, - encoder->bitrate * 1000, -1.0)) { - g_set_error(error, vorbis_encoder_quark(), 0, - "error initializing vorbis encoder"); - vorbis_info_clear(&encoder->vi); - return false; - } - } - - vorbis_analysis_init(&encoder->vd, &encoder->vi); - vorbis_block_init(&encoder->vd, &encoder->vb); - ogg_stream_init(&encoder->os, g_random_int()); - - return true; -} - -static void -vorbis_encoder_headerout(struct vorbis_encoder *encoder, vorbis_comment *vc) -{ - ogg_packet packet, comments, codebooks; - - vorbis_analysis_headerout(&encoder->vd, vc, - &packet, &comments, &codebooks); - - ogg_stream_packetin(&encoder->os, &packet); - ogg_stream_packetin(&encoder->os, &comments); - ogg_stream_packetin(&encoder->os, &codebooks); -} - -static void -vorbis_encoder_send_header(struct vorbis_encoder *encoder) -{ - vorbis_comment vc; - - vorbis_comment_init(&vc); - vorbis_encoder_headerout(encoder, &vc); - vorbis_comment_clear(&vc); -} - -static bool -vorbis_encoder_open(struct encoder *_encoder, - struct audio_format *audio_format, - GError **error) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - audio_format->format = SAMPLE_FORMAT_S16; - - encoder->audio_format = *audio_format; - - if (!vorbis_encoder_reinit(encoder, error)) - return false; - - vorbis_encoder_send_header(encoder); - - /* set "flush" to true, so the caller gets the full headers on - the first read() */ - encoder->flush = true; - - return true; -} - -static void -vorbis_encoder_clear(struct vorbis_encoder *encoder) -{ - ogg_stream_clear(&encoder->os); - vorbis_block_clear(&encoder->vb); - vorbis_dsp_clear(&encoder->vd); - vorbis_info_clear(&encoder->vi); -} - -static void -vorbis_encoder_close(struct encoder *_encoder) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - vorbis_encoder_clear(encoder); -} - -static void -vorbis_encoder_blockout(struct vorbis_encoder *encoder) -{ - while (vorbis_analysis_blockout(&encoder->vd, &encoder->vb) == 1) { - vorbis_analysis(&encoder->vb, NULL); - vorbis_bitrate_addblock(&encoder->vb); - - ogg_packet packet; - while (vorbis_bitrate_flushpacket(&encoder->vd, &packet)) - ogg_stream_packetin(&encoder->os, &packet); - } -} - -static bool -vorbis_encoder_flush(struct encoder *_encoder, G_GNUC_UNUSED GError **error) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - encoder->flush = true; - return true; -} - -static bool -vorbis_encoder_pre_tag(struct encoder *_encoder, G_GNUC_UNUSED GError **error) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - vorbis_analysis_wrote(&encoder->vd, 0); - vorbis_encoder_blockout(encoder); - - /* reinitialize vorbis_dsp_state and vorbis_block to reset the - end-of-stream marker */ - vorbis_block_clear(&encoder->vb); - vorbis_dsp_clear(&encoder->vd); - vorbis_analysis_init(&encoder->vd, &encoder->vi); - vorbis_block_init(&encoder->vd, &encoder->vb); - - encoder->flush = true; - return true; -} - -static void -copy_tag_to_vorbis_comment(vorbis_comment *vc, const struct tag *tag) -{ - for (unsigned i = 0; i < tag->num_items; i++) { - struct tag_item *item = tag->items[i]; - char *name = g_ascii_strup(tag_item_names[item->type], -1); - vorbis_comment_add_tag(vc, name, item->value); - g_free(name); - } -} - -static bool -vorbis_encoder_tag(struct encoder *_encoder, const struct tag *tag, - G_GNUC_UNUSED GError **error) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - vorbis_comment comment; - - /* write the vorbis_comment object */ - - vorbis_comment_init(&comment); - copy_tag_to_vorbis_comment(&comment, tag); - - /* reset ogg_stream_state and begin a new stream */ - - ogg_stream_reset_serialno(&encoder->os, g_random_int()); - - /* send that vorbis_comment to the ogg_stream_state */ - - vorbis_encoder_headerout(encoder, &comment); - vorbis_comment_clear(&comment); - - /* the next vorbis_encoder_read() call should flush the - ogg_stream_state */ - - encoder->flush = true; - - return true; -} - -static void -pcm16_to_vorbis_buffer(float **dest, const int16_t *src, - unsigned num_frames, unsigned num_channels) -{ - for (unsigned i = 0; i < num_frames; i++) - for (unsigned j = 0; j < num_channels; j++) - dest[j][i] = *src++ / 32768.0; -} - -static bool -vorbis_encoder_write(struct encoder *_encoder, - const void *data, size_t length, - G_GNUC_UNUSED GError **error) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - - unsigned num_frames = length - / audio_format_frame_size(&encoder->audio_format); - - /* this is for only 16-bit audio */ - - pcm16_to_vorbis_buffer(vorbis_analysis_buffer(&encoder->vd, - num_frames), - (const int16_t *)data, - num_frames, encoder->audio_format.channels); - - vorbis_analysis_wrote(&encoder->vd, num_frames); - vorbis_encoder_blockout(encoder); - return true; -} - -static size_t -vorbis_encoder_read(struct encoder *_encoder, void *_dest, size_t length) -{ - struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder; - unsigned char *dest = _dest; - - ogg_page page; - int ret = ogg_stream_pageout(&encoder->os, &page); - if (ret == 0 && encoder->flush) { - encoder->flush = false; - ret = ogg_stream_flush(&encoder->os, &page); - - } - - if (ret == 0) - return 0; - - assert(page.header_len > 0 || page.body_len > 0); - - size_t nbytes = (size_t)page.header_len + (size_t)page.body_len; - - if (nbytes > length) - /* XXX better error handling */ - MPD_ERROR("buffer too small"); - - memcpy(dest, page.header, page.header_len); - memcpy(dest + page.header_len, page.body, page.body_len); - - return nbytes; -} - -static const char * -vorbis_encoder_get_mime_type(G_GNUC_UNUSED struct encoder *_encoder) -{ - return "audio/ogg"; -} - -const struct encoder_plugin vorbis_encoder_plugin = { - .name = "vorbis", - .init = vorbis_encoder_init, - .finish = vorbis_encoder_finish, - .open = vorbis_encoder_open, - .close = vorbis_encoder_close, - .end = vorbis_encoder_pre_tag, - .flush = vorbis_encoder_flush, - .pre_tag = vorbis_encoder_pre_tag, - .tag = vorbis_encoder_tag, - .write = vorbis_encoder_write, - .read = vorbis_encoder_read, - .get_mime_type = vorbis_encoder_get_mime_type, -}; 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