diff options
Diffstat (limited to '1.4.23-rc4/formats/format_ogg_vorbis.c')
| -rw-r--r-- | 1.4.23-rc4/formats/format_ogg_vorbis.c | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/1.4.23-rc4/formats/format_ogg_vorbis.c b/1.4.23-rc4/formats/format_ogg_vorbis.c deleted file mode 100644 index 7e20c0004..000000000 --- a/1.4.23-rc4/formats/format_ogg_vorbis.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 2005, Jeff Ollie - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * - * \brief OGG/Vorbis streams. - * \arg File name extension: ogg - * \ingroup formats - */ - -/* the order of these dependencies is important... it also specifies - the link order of the libraries during linking -*/ - -/*** MODULEINFO - <depend>vorbis</depend> - <depend>ogg</depend> - ***/ - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include <sys/types.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <stdlib.h> -#include <sys/time.h> -#include <stdio.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> - -#include <vorbis/codec.h> -#include <vorbis/vorbisenc.h> - -#ifdef _WIN32 -#include <io.h> -#include <fcntl.h> -#endif - -#include "asterisk/lock.h" -#include "asterisk/channel.h" -#include "asterisk/file.h" -#include "asterisk/logger.h" -#include "asterisk/module.h" - -/* - * this is the number of samples we deal with. Samples are converted - * to SLINEAR so each one uses 2 bytes in the buffer. - */ -#define SAMPLES_MAX 160 -#define BUF_SIZE (2*SAMPLES_MAX) - -#define BLOCK_SIZE 4096 /* used internally in the vorbis routines */ - -struct vorbis_desc { /* format specific parameters */ - /* structures for handling the Ogg container */ - ogg_sync_state oy; - ogg_stream_state os; - ogg_page og; - ogg_packet op; - - /* structures for handling Vorbis audio data */ - vorbis_info vi; - vorbis_comment vc; - vorbis_dsp_state vd; - vorbis_block vb; - - /*! \brief Indicates whether this filestream is set up for reading or writing. */ - int writing; - - /*! \brief Indicates whether an End of Stream condition has been detected. */ - int eos; -}; - -/*! - * \brief Create a new OGG/Vorbis filestream and set it up for reading. - * \param s File that points to on disk storage of the OGG/Vorbis data. - * \return The new filestream. - */ -static int ogg_vorbis_open(struct ast_filestream *s) -{ - int i; - int bytes; - int result; - char **ptr; - char *buffer; - struct vorbis_desc *tmp = (struct vorbis_desc *)s->_private; - - tmp->writing = 0; - - ogg_sync_init(&tmp->oy); - - buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE); - bytes = fread(buffer, 1, BLOCK_SIZE, s->f); - ogg_sync_wrote(&tmp->oy, bytes); - - result = ogg_sync_pageout(&tmp->oy, &tmp->og); - if (result != 1) { - if(bytes < BLOCK_SIZE) { - ast_log(LOG_ERROR, "Run out of data...\n"); - } else { - ast_log(LOG_ERROR, "Input does not appear to be an Ogg bitstream.\n"); - } - ogg_sync_clear(&tmp->oy); - return -1; - } - - ogg_stream_init(&tmp->os, ogg_page_serialno(&tmp->og)); - vorbis_info_init(&tmp->vi); - vorbis_comment_init(&tmp->vc); - - if (ogg_stream_pagein(&tmp->os, &tmp->og) < 0) { - ast_log(LOG_ERROR, "Error reading first page of Ogg bitstream data.\n"); -error: - ogg_stream_clear(&tmp->os); - vorbis_comment_clear(&tmp->vc); - vorbis_info_clear(&tmp->vi); - ogg_sync_clear(&tmp->oy); - return -1; - } - - if (ogg_stream_packetout(&tmp->os, &tmp->op) != 1) { - ast_log(LOG_ERROR, "Error reading initial header packet.\n"); - goto error; - } - - if (vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op) < 0) { - ast_log(LOG_ERROR, "This Ogg bitstream does not contain Vorbis audio data.\n"); - goto error; - } - - for (i = 0; i < 2 ; ) { - while (i < 2) { - result = ogg_sync_pageout(&tmp->oy, &tmp->og); - if (result == 0) - break; - if (result == 1) { - ogg_stream_pagein(&tmp->os, &tmp->og); - while(i < 2) { - result = ogg_stream_packetout(&tmp->os,&tmp->op); - if(result == 0) - break; - if(result < 0) { - ast_log(LOG_ERROR, "Corrupt secondary header. Exiting.\n"); - goto error; - } - vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op); - i++; - } - } - } - - buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE); - bytes = fread(buffer, 1, BLOCK_SIZE, s->f); - if (bytes == 0 && i < 2) { - ast_log(LOG_ERROR, "End of file before finding all Vorbis headers!\n"); - goto error; - } - ogg_sync_wrote(&tmp->oy, bytes); - } - - for (ptr = tmp->vc.user_comments; *ptr; ptr++) - ast_log(LOG_DEBUG, "OGG/Vorbis comment: %s\n", *ptr); - ast_log(LOG_DEBUG, "OGG/Vorbis bitstream is %d channel, %ldHz\n", tmp->vi.channels, tmp->vi.rate); - ast_log(LOG_DEBUG, "OGG/Vorbis file encoded by: %s\n", tmp->vc.vendor); - - if (tmp->vi.channels != 1) { - ast_log(LOG_ERROR, "Only monophonic OGG/Vorbis files are currently supported!\n"); - goto error; - } - - if (tmp->vi.rate != DEFAULT_SAMPLE_RATE) { - ast_log(LOG_ERROR, "Only 8000Hz OGG/Vorbis files are currently supported!\n"); - vorbis_block_clear(&tmp->vb); - vorbis_dsp_clear(&tmp->vd); - goto error; - } - - vorbis_synthesis_init(&tmp->vd, &tmp->vi); - vorbis_block_init(&tmp->vd, &tmp->vb); - - return 0; -} - -/*! - * \brief Create a new OGG/Vorbis filestream and set it up for writing. - * \param s File pointer that points to on-disk storage. - * \param comment Comment that should be embedded in the OGG/Vorbis file. - * \return A new filestream. - */ -static int ogg_vorbis_rewrite(struct ast_filestream *s, - const char *comment) -{ - ogg_packet header; - ogg_packet header_comm; - ogg_packet header_code; - struct vorbis_desc *tmp = (struct vorbis_desc *)s->_private; - - tmp->writing = 1; - - vorbis_info_init(&tmp->vi); - - if (vorbis_encode_init_vbr(&tmp->vi, 1, DEFAULT_SAMPLE_RATE, 0.4)) { - ast_log(LOG_ERROR, "Unable to initialize Vorbis encoder!\n"); - return -1; - } - - vorbis_comment_init(&tmp->vc); - vorbis_comment_add_tag(&tmp->vc, "ENCODER", "Asterisk PBX"); - if (comment) - vorbis_comment_add_tag(&tmp->vc, "COMMENT", (char *) comment); - - vorbis_analysis_init(&tmp->vd, &tmp->vi); - vorbis_block_init(&tmp->vd, &tmp->vb); - - ogg_stream_init(&tmp->os, ast_random()); - - vorbis_analysis_headerout(&tmp->vd, &tmp->vc, &header, &header_comm, - &header_code); - ogg_stream_packetin(&tmp->os, &header); - ogg_stream_packetin(&tmp->os, &header_comm); - ogg_stream_packetin(&tmp->os, &header_code); - - while (!tmp->eos) { - if (ogg_stream_flush(&tmp->os, &tmp->og) == 0) - break; - if (!fwrite(tmp->og.header, 1, tmp->og.header_len, s->f)) { - ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); - } - if (!fwrite(tmp->og.body, 1, tmp->og.body_len, s->f)) { - ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); - } - if (ogg_page_eos(&tmp->og)) - tmp->eos = 1; - } - - return 0; -} - -/*! - * \brief Write out any pending encoded data. - * \param s An OGG/Vorbis filestream. - * \param f The file to write to. - */ -static void write_stream(struct vorbis_desc *s, FILE *f) -{ - while (vorbis_analysis_blockout(&s->vd, &s->vb) == 1) { - vorbis_analysis(&s->vb, NULL); - vorbis_bitrate_addblock(&s->vb); - - while (vorbis_bitrate_flushpacket(&s->vd, &s->op)) { - ogg_stream_packetin(&s->os, &s->op); - while (!s->eos) { - if (ogg_stream_pageout(&s->os, &s->og) == 0) { - break; - } - if (!fwrite(s->og.header, 1, s->og.header_len, f)) { - ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); - } - if (!fwrite(s->og.body, 1, s->og.body_len, f)) { - ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); - } - if (ogg_page_eos(&s->og)) { - s->eos = 1; - } - } - } - } -} - -/*! - * \brief Write audio data from a frame to an OGG/Vorbis filestream. - * \param fs An OGG/Vorbis filestream. - * \param f A frame containing audio to be written to the filestream. - * \return -1 if there was an error, 0 on success. - */ -static int ogg_vorbis_write(struct ast_filestream *fs, struct ast_frame *f) -{ - int i; - float **buffer; - short *data; - struct vorbis_desc *s = (struct vorbis_desc *)fs->_private; - - if (!s->writing) { - ast_log(LOG_ERROR, "This stream is not set up for writing!\n"); - return -1; - } - - if (f->frametype != AST_FRAME_VOICE) { - ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); - return -1; - } - if (f->subclass != AST_FORMAT_SLINEAR) { - ast_log(LOG_WARNING, "Asked to write non-SLINEAR frame (%d)!\n", - f->subclass); - return -1; - } - if (!f->datalen) - return -1; - - data = (short *) f->data; - - buffer = vorbis_analysis_buffer(&s->vd, f->samples); - - for (i = 0; i < f->samples; i++) - buffer[0][i] = (double)data[i] / 32768.0; - - vorbis_analysis_wrote(&s->vd, f->samples); - - write_stream(s, fs->f); - - return 0; -} - -/*! - * \brief Close a OGG/Vorbis filestream. - * \param fs A OGG/Vorbis filestream. - */ -static void ogg_vorbis_close(struct ast_filestream *fs) -{ - struct vorbis_desc *s = (struct vorbis_desc *)fs->_private; - - if (s->writing) { - /* Tell the Vorbis encoder that the stream is finished - * and write out the rest of the data */ - vorbis_analysis_wrote(&s->vd, 0); - write_stream(s, fs->f); - } - - ogg_stream_clear(&s->os); - vorbis_block_clear(&s->vb); - vorbis_dsp_clear(&s->vd); - vorbis_comment_clear(&s->vc); - vorbis_info_clear(&s->vi); - - if (s->writing) { - ogg_sync_clear(&s->oy); - } -} - -/*! - * \brief Get audio data. - * \param fs An OGG/Vorbis filestream. - * \param pcm Pointer to a buffere to store audio data in. - */ - -static int read_samples(struct ast_filestream *fs, float ***pcm) -{ - int samples_in; - int result; - char *buffer; - int bytes; - struct vorbis_desc *s = (struct vorbis_desc *)fs->_private; - - while (1) { - samples_in = vorbis_synthesis_pcmout(&s->vd, pcm); - if (samples_in > 0) { - return samples_in; - } - - /* The Vorbis decoder needs more data... */ - /* See ifOGG has any packets in the current page for the Vorbis decoder. */ - result = ogg_stream_packetout(&s->os, &s->op); - if (result > 0) { - /* Yes OGG had some more packets for the Vorbis decoder. */ - if (vorbis_synthesis(&s->vb, &s->op) == 0) { - vorbis_synthesis_blockin(&s->vd, &s->vb); - } - - continue; - } - - if (result < 0) - ast_log(LOG_WARNING, - "Corrupt or missing data at this page position; continuing...\n"); - - /* No more packets left in the current page... */ - - if (s->eos) { - /* No more pages left in the stream */ - return -1; - } - - while (!s->eos) { - /* See ifOGG has any pages in it's internal buffers */ - result = ogg_sync_pageout(&s->oy, &s->og); - if (result > 0) { - /* Yes, OGG has more pages in it's internal buffers, - add the page to the stream state */ - result = ogg_stream_pagein(&s->os, &s->og); - if (result == 0) { - /* Yes, got a new,valid page */ - if (ogg_page_eos(&s->og)) { - s->eos = 1; - } - break; - } - ast_log(LOG_WARNING, - "Invalid page in the bitstream; continuing...\n"); - } - - if (result < 0) - ast_log(LOG_WARNING, - "Corrupt or missing data in bitstream; continuing...\n"); - - /* No, we need to read more data from the file descrptor */ - /* get a buffer from OGG to read the data into */ - buffer = ogg_sync_buffer(&s->oy, BLOCK_SIZE); - /* read more data from the file descriptor */ - bytes = fread(buffer, 1, BLOCK_SIZE, fs->f); - /* Tell OGG how many bytes we actually read into the buffer */ - ogg_sync_wrote(&s->oy, bytes); - if (bytes == 0) { - s->eos = 1; - } - } - } -} - -/*! - * \brief Read a frame full of audio data from the filestream. - * \param fs The filestream. - * \param whennext Number of sample times to schedule the next call. - * \return A pointer to a frame containing audio data or NULL ifthere is no more audio data. - */ -static struct ast_frame *ogg_vorbis_read(struct ast_filestream *fs, - int *whennext) -{ - int clipflag = 0; - int i; - int j; - double accumulator[SAMPLES_MAX]; - int val; - int samples_in; - int samples_out = 0; - struct vorbis_desc *s = (struct vorbis_desc *)fs->_private; - short *buf; /* SLIN data buffer */ - - fs->fr.frametype = AST_FRAME_VOICE; - fs->fr.subclass = AST_FORMAT_SLINEAR; - fs->fr.mallocd = 0; - AST_FRAME_SET_BUFFER(&fs->fr, fs->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); - buf = (short *)(fs->fr.data); /* SLIN data buffer */ - - while (samples_out != SAMPLES_MAX) { - float **pcm; - int len = SAMPLES_MAX - samples_out; - - /* See ifVorbis decoder has some audio data for us ... */ - samples_in = read_samples(fs, &pcm); - if (samples_in <= 0) - break; - - /* Got some audio data from Vorbis... */ - /* Convert the float audio data to 16-bit signed linear */ - - clipflag = 0; - if (samples_in > len) - samples_in = len; - for (j = 0; j < samples_in; j++) - accumulator[j] = 0.0; - - for (i = 0; i < s->vi.channels; i++) { - float *mono = pcm[i]; - for (j = 0; j < samples_in; j++) - accumulator[j] += mono[j]; - } - - for (j = 0; j < samples_in; j++) { - val = accumulator[j] * 32767.0 / s->vi.channels; - if (val > 32767) { - val = 32767; - clipflag = 1; - } else if (val < -32768) { - val = -32768; - clipflag = 1; - } - buf[samples_out + j] = val; - } - - if (clipflag) - ast_log(LOG_WARNING, "Clipping in frame %ld\n", (long) (s->vd.sequence)); - /* Tell the Vorbis decoder how many samples we actually used. */ - vorbis_synthesis_read(&s->vd, samples_in); - samples_out += samples_in; - } - - if (samples_out > 0) { - fs->fr.datalen = samples_out * 2; - fs->fr.samples = samples_out; - *whennext = samples_out; - - return &fs->fr; - } else { - return NULL; - } -} - -/*! - * \brief Trucate an OGG/Vorbis filestream. - * \param s The filestream to truncate. - * \return 0 on success, -1 on failure. - */ - -static int ogg_vorbis_trunc(struct ast_filestream *s) -{ - ast_log(LOG_WARNING, "Truncation is not supported on OGG/Vorbis streams!\n"); - return -1; -} - -/*! - * \brief Seek to a specific position in an OGG/Vorbis filestream. - * \param s The filestream to truncate. - * \param sample_offset New position for the filestream, measured in 8KHz samples. - * \param whence Location to measure - * \return 0 on success, -1 on failure. - */ -static int ogg_vorbis_seek(struct ast_filestream *s, off_t sample_offset, int whence) -{ - ast_log(LOG_WARNING, "Seeking is not supported on OGG/Vorbis streams!\n"); - return -1; -} - -static off_t ogg_vorbis_tell(struct ast_filestream *s) -{ - ast_log(LOG_WARNING, "Telling is not supported on OGG/Vorbis streams!\n"); - return -1; -} - -static const struct ast_format vorbis_f = { - .name = "ogg_vorbis", - .exts = "ogg", - .format = AST_FORMAT_SLINEAR, - .open = ogg_vorbis_open, - .rewrite = ogg_vorbis_rewrite, - .write = ogg_vorbis_write, - .seek = ogg_vorbis_seek, - .trunc = ogg_vorbis_trunc, - .tell = ogg_vorbis_tell, - .read = ogg_vorbis_read, - .close = ogg_vorbis_close, - .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, - .desc_size = sizeof(struct vorbis_desc), -}; - -static int load_module(void) -{ - return ast_format_register(&vorbis_f); -} - -static int unload_module(void) -{ - return ast_format_unregister(vorbis_f.name); -} - -AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "OGG/Vorbis audio"); - |