audiod_ldflags=""
server_cmdline_objs="server.cmdline"
-server_errlist_objs="server mp3 afs command net string signal random_selector
+server_errlist_objs="server mp3_afh afs command net string signal random_selector
time daemon stat crypt http_send db close_on_fork playlist_selector
ipc dccp dccp_send fd"
server_ldflags=""
filter_cmdline_objs="$filter_cmdline_objs oggdec_filter.cmdline"
audiod_cmdline_objs="$audiod_cmdline_objs oggdec_filter.cmdline"
- server_errlist_objs="$server_errlist_objs ogg"
+ server_errlist_objs="$server_errlist_objs ogg_afh"
filter_errlist_objs="$filter_errlist_objs oggdec"
audiod_errlist_objs="$audiod_errlist_objs oggdec"
else
SS_HTTP_SEND,
SS_ORTP_SEND,
SS_DB,
- SS_OGG,
- SS_MP3,
+ SS_OGG_AFH,
+ SS_MP3_AFH,
SS_AAC_AFH,
SS_MP3DEC,
SS_AACDEC,
PARA_ERROR(NULL_OPEN, "can not open /dev/null"), \
-#define MP3_ERRORS \
+#define MP3_AFH_ERRORS \
PARA_ERROR(FREAD, "fread error"), \
PARA_ERROR(FSEEK, "fseek error"), \
PARA_ERROR(FRAME, "invalid mp3 frame"), \
PARA_ERROR(STCO, "did not find stco atom"), \
-#define OGG_ERRORS \
+#define OGG_AFH_ERRORS \
PARA_ERROR(OGG_READ, "ogg read error"), \
PARA_ERROR(SYNC_PAGEOUT, "ogg sync page-out error (no ogg file?)"), \
PARA_ERROR(STREAM_PAGEIN, "ogg stream page-in error (first page)"), \
SS_ENUM(MP3DEC);
SS_ENUM(AACDEC);
SS_ENUM(FILTER);
-SS_ENUM(MP3);
-SS_ENUM(OGG);
+SS_ENUM(MP3_AFH);
+SS_ENUM(OGG_AFH);
SS_ENUM(AAC_AFH);
SS_ENUM(AAC_COMMON);
SS_ENUM(SERVER);
+++ /dev/null
-/*
- * Copyright (C) 2003-2006 Andre Noll <maan@systemlinux.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- */
-
-/** \file mp3.c para_server's mp3 audio format handler */
-
-/*
- * This file is based in part on mp3tech.c and mp3tech.h, Copyright (C)
- * 2000-2001 Cedric Tefft <cedric@earthling.net>, which in turn is based
- * in part on
- *
- * * MP3Info 0.5 by Ricardo Cerqueira <rmc@rccn.net>
- * * MP3Stat 0.9 by Ed Sweetman <safemode@voicenet.com> and
- * Johannes Overmann <overmann@iname.com>
- */
-
-#include "server.cmdline.h"
-#include "server.h"
-#include "afs.h"
-#include "afh.h"
-#include "error.h"
-#include "fd.h"
-
-/** \cond some defines and structs which are only used in this file */
-
-/*
- * MIN_CONSEC_GOOD_FRAMES defines how many consecutive valid MP3 frames we need
- * to see before we decide we are looking at a real MP3 file
- */
-#define MIN_CONSEC_GOOD_FRAMES 3
-
-#define FRAME_HEADER_SIZE 4
-#define MIN_FRAME_SIZE 21
-
-struct mp3header {
- unsigned long sync;
- unsigned int version;
- unsigned int layer;
- unsigned int crc;
- unsigned int bitrate;
- unsigned int freq;
- unsigned int padding;
- unsigned int mode;
- unsigned int copyright;
- unsigned int original;
- unsigned int emphasis;
-};
-
-struct id3tag {
- char title[31];
- char artist[31];
- char album[31];
- char year[5];
- char comment[31];
-};
-
-struct mp3info {
- char *filename;
- FILE *file;
- struct mp3header header;
- int id3_isvalid;
- struct id3tag id3;
- int vbr;
- long unsigned br_average;
- long unsigned seconds;
- int frames;
- int freq;
-};
-
-/** \endcond */
-static int frequencies[3][4] = {
- {22050,24000,16000,50000}, /* MPEG 2.0 */
- {44100,48000,32000,50000}, /* MPEG 1.0 */
- {11025,12000,8000,50000} /* MPEG 2.5 */
-};
-
-static int mp3info_bitrate[2][3][14] = {
-{ /* MPEG 2.0 */
- {32,48,56,64,80,96,112,128,144,160,176,192,224,256}, /* layer 1 */
- {8,16,24,32,40,48,56,64,80,96,112,128,144,160}, /* layer 2 */
- {8,16,24,32,40,48,56,64,80,96,112,128,144,160} /* layer 3 */
-},
-
-{ /* MPEG 1.0 */
- {32,64,96,128,160,192,224,256,288,320,352,384,416,448}, /* layer 1 */
- {32,48,56,64,80,96,112,128,160,192,224,256,320,384}, /* layer 2 */
- {32,40,48,56,64,80,96,112,128,160,192,224,256,320} /* layer 3 */
-}
-};
-
-static int frame_size_index[] = {24000, 72000, 72000};
-static const char *mode_text[] = {"stereo", "joint stereo", "dual channel", "mono", "invalid"};
-
-static struct mp3info mp3;
-static char mp3buf[8192];
-static int chunk_size;
-static struct audio_format_handler *af;
-
-static int header_frequency(struct mp3header *h)
-{
- if (h->version > 2 || h->freq > 3)
- return -E_HEADER_FREQ;
- return frequencies[h->version][h->freq];
-}
-
-static const char *header_mode(struct mp3header *h)
-{
- if (h->mode > 4)
- h->mode = 4; /* invalid */
- return mode_text[h->mode];
-}
-static int header_bitrate(struct mp3header *h)
-{
- if (h->layer > 3 || h->bitrate > 14)
- return -E_HEADER_BITRATE;
- return mp3info_bitrate[h->version & 1][3 - h->layer][h->bitrate - 1];
-}
-
-static int frame_length(struct mp3header *header)
-{
- int hb, hf = header_frequency(header);
-
- if (hf < 0)
- return hf;
- hb = header_bitrate(header);
- if (hb < 0)
- return hb;
- if (header->sync != 0xFFE || header->layer > 3)
- return -E_FRAME;
- return frame_size_index[3 - header->layer] *
- ((header->version & 1) + 1) * hb / hf
- + header->padding;
-}
-
-static void write_info_str(char *info_str)
-{
- int v = mp3.id3_isvalid;
-
- snprintf(info_str, MMD_INFO_SIZE,
- "audio_file_info1:%d x %lums, %lu kbit/s (%cbr) %i KHz %s\n"
- "audio_file_info2:%s, by %s\n"
- "audio_file_info3:A: %s, Y: %s, C: %s\n",
- mp3.frames,
- tv2ms(&af->chunk_tv),
- mp3.br_average,
- mp3.vbr? 'v' : 'c',
- mp3.freq / 1000,
- header_mode(&mp3.header),
- v && *mp3.id3.title? mp3.id3.title : "(title tag not set)",
- v && *mp3.id3.artist? mp3.id3.artist : "(artist tag not set)",
- v && *mp3.id3.album? mp3.id3.album : "(album tag not set)",
- v && *mp3.id3.year? mp3.id3.year : "????",
- v && *mp3.id3.comment? mp3.id3.comment : "(comment tag not set)"
- );
-}
-
-/*
- * Remove trailing whitespace from the end of a string
- */
-static char *unpad(char *string)
-{
- char *pos = string + strlen(string) - 1;
- while (isspace(pos[0]))
- (pos--)[0] = 0;
- return string;
-}
-
-static int compare_headers(struct mp3header *h1,struct mp3header *h2)
-{
- if ((*(uint*)h1) == (*(uint*)h2))
- return 1;
- if ((h1->version == h2->version) &&
- (h1->layer == h2->layer) &&
- (h1->crc == h2->crc) &&
- (h1->freq == h2->freq) &&
- (h1->mode == h2->mode) &&
- (h1->copyright == h2->copyright) &&
- (h1->original == h2->original) &&
- (h1->emphasis == h2->emphasis))
- return 1;
- else
- return 0;
-}
-
-/**
- * get next MP3 frame header.
- *
- * \param stream to read the header from
- * \param header structure that gets filled in by get_header()
- *
- * \return On success, the header frame length is returned. A return value of
- * zero means that we did not retrieve a valid frame header, and a negative
- * return value indicates an error.
- */
-static int get_header(FILE *file, struct mp3header *header)
-{
- unsigned char buffer[FRAME_HEADER_SIZE];
- int fl, ret;
-
- if (!file || !header)
- return -E_MP3_NO_FILE;
- ret = para_fread(buffer, FRAME_HEADER_SIZE, 1, file);
- if (ret < FRAME_HEADER_SIZE) {
- header->sync = 0;
- return ret < 0? ret : 0;
- }
- header->layer = (buffer[1] >> 1) & 3;
- header->sync = (((int)buffer[0]<<4) | ((int)(buffer[1]&0xE0)>>4));
- if (buffer[1] & 0x10)
- header->version = (buffer[1] >> 3) & 1;
- else
- header->version = 2;
- if ((header->sync != 0xFFE) || (header->layer != 1)) {
- header->sync = 0;
-// PARA_DEBUG_LOG("%s: header not found\n", __func__);
- return 0;
- }
- header->crc = buffer[1] & 1;
- header->bitrate = (buffer[2] >> 4) & 0x0F;
-// PARA_DEBUG_LOG("%s: found header, bitrate: %u\n", __func__,
-// header->bitrate);
- header->freq = (buffer[2] >> 2) & 0x3;
- header->padding = (buffer[2] >>1) & 0x1;
- header->mode = (buffer[3] >> 6) & 0x3;
- fl = frame_length(header);
- return (fl >= MIN_FRAME_SIZE)? fl : -E_FRAME_LENGTH;
-}
-
-/**
- * find the next mp3 header
- *
- * \return On success, the length of the next frame header. If the end of the
- * file was reached, the function returns zero. On errors, a negative value is
- * returned.
- *
- */
-static int mp3_seek_next_header(void)
-{
- int k, l = 0, c, first_len;
- struct mp3header h, h2;
- long valid_start = 0;
-
- while (1) {
- while ((c = fgetc(mp3.file)) != 255 && (c != EOF))
- ; /* nothing */
- if (c != 255)
- return 0;
- ungetc(c, mp3.file);
- valid_start = ftell(mp3.file);
- first_len = get_header(mp3.file, &h);
- if (first_len <= 0)
- continue;
- if (fseek(mp3.file, first_len - FRAME_HEADER_SIZE, SEEK_CUR) < 0)
- return -E_FSEEK;
- for (k = 1; k < MIN_CONSEC_GOOD_FRAMES; k++) {
- if ((l = get_header(mp3.file, &h2)) <= 0)
- break;
- if (!compare_headers(&h, &h2))
- break;
- fseek(mp3.file, l - FRAME_HEADER_SIZE, SEEK_CUR);
- }
- if (k == MIN_CONSEC_GOOD_FRAMES) {
- fseek(mp3.file, valid_start, SEEK_SET);
- memcpy(&(mp3.header), &h2, sizeof(struct mp3header));
- return first_len;
- }
- }
-}
-
-static int mp3_get_id3(void)
-{
- char fbuf[4];
-
- mp3.id3_isvalid = 0;
- mp3.id3.title[0] = '\0';
- mp3.id3.artist[0] = '\0';
- mp3.id3.album[0] = '\0';
- mp3.id3.comment[0] = '\0';
- mp3.id3.year[0] = '\0';
- if (fseek(mp3.file, -128, SEEK_END))
- return -E_FSEEK;
- if (para_fread(fbuf, 1, 3, mp3.file) < 0)
- return -E_FREAD;
- fbuf[3] = '\0';
- if (strcmp("TAG", fbuf)) {
- PARA_INFO_LOG("%s", "no id3 tag\n");
- return 0;
- }
- if (fseek(mp3.file, -125, SEEK_END) < 0)
- return -E_FSEEK;
- if (para_fread(mp3.id3.title, 1, 30, mp3.file) != 30)
- return -E_FREAD;
- mp3.id3.title[30] = '\0';
- if (para_fread(mp3.id3.artist, 1, 30, mp3.file) != 30)
- return -E_FREAD;
- mp3.id3.artist[30] = '\0';
- if (para_fread(mp3.id3.album, 1, 30, mp3.file) != 30)
- return -E_FREAD;
- mp3.id3.album[30] = '\0';
- if (para_fread(mp3.id3.year, 1, 4, mp3.file) != 4)
- return -E_FREAD;
- mp3.id3.year[4] = '\0';
- if (para_fread(mp3.id3.comment, 1, 30, mp3.file) != 30)
- return -E_FREAD;
- mp3.id3.comment[30] = '\0';
- mp3.id3_isvalid = 1;
- unpad(mp3.id3.title);
- unpad(mp3.id3.artist);
- unpad(mp3.id3.album);
- unpad(mp3.id3.year);
- unpad(mp3.id3.comment);
- return 1;
-}
-
-static int find_valid_start(void)
-{
- int frame_len;
-
- if (!mp3.file)
- return -E_MP3_NO_FILE;
- frame_len = get_header(mp3.file, &mp3.header);
- if (frame_len < 0)
- return frame_len;
- if (!frame_len) {
- frame_len = mp3_seek_next_header();
- if (frame_len <= 0)
- return frame_len;
- } else
- if (fseek(mp3.file, -FRAME_HEADER_SIZE, SEEK_CUR) < 0)
- return -E_FSEEK;
- if (frame_len <= 1) /* FRAME_HEADER_SIZE? */
- return -E_FRAME_LENGTH;
- return frame_len;
-}
-
-static int mp3_read_info(void)
-{
- long fl_avg = 0, freq_avg = 0, br_avg = 0, fcount = 0;
- int ret, len = 0, old_br = -1;
- struct timeval total_time = {0, 0};
-
- ret = mp3_get_id3();
- if (ret < 0)
- return ret;
- rewind(mp3.file);
- mp3.vbr = 0;
- mp3.freq = 0;
- while (1) {
- int freq, br, fl;
- struct timeval tmp, cct; /* current chunk time */
- if (len > 0)
- if (fseek(mp3.file, len, SEEK_CUR) < 0)
- return -E_FSEEK;
- len = find_valid_start();
- if (len <= 0)
- break;
- freq = header_frequency(&mp3.header);
- br = header_bitrate(&mp3.header);
- fl = frame_length(&mp3.header);
- if (freq < 0 || br < 0 || fl < 0)
- continue;
- tmp.tv_sec = fl;
- tmp.tv_usec = 0;
- tv_divide(br * 125, &tmp, &cct);
- tv_add(&cct, &total_time, &tmp);
- total_time = tmp;
-// PARA_DEBUG_LOG("%s: br: %d, freq: %d, fl: %d, cct: %lu\n", __func__, br, freq, fl, cct.tv_usec);
- fcount++;
- if (fcount == 1) {
- freq_avg = freq;
- br_avg = br;
- old_br = br;
- fl_avg = fl;
- continue;
- }
- freq_avg += (freq - freq_avg) / (fcount + 1);
- fl_avg += (fl - fl_avg) / (fcount + 1);
- br_avg += (br - br_avg) / (fcount + 1);
- if (old_br != br)
- mp3.vbr = 1;
- old_br = br;
- }
- if (!fcount || !freq_avg || !br_avg)
- return -E_MP3_INFO;
- mp3.br_average = br_avg;
- mp3.freq = freq_avg;
- mp3.frames = fcount;
- mp3.seconds = (tv2ms(&total_time) + 500) / 1000;
- tv_divide(fcount, &total_time, &af->chunk_tv);
- rewind(mp3.file);
- PARA_DEBUG_LOG("chunk_time: %lums\n", tv2ms(&af->chunk_tv));
- tv_scale(30, &af->chunk_tv, &af->eof_tv);
- PARA_DEBUG_LOG("eof timeout: %lu\n", tv2ms(&af->eof_tv));
- return 1;
-}
-
-/*
- * Read mp3 information from audio file
- */
-static int mp3_get_file_info(FILE *audio_file, char *info_str,
- long unsigned *frames, int *seconds)
-{
- int ret;
-
- if (!audio_file)
- return -E_MP3_NO_FILE;
- mp3.file = audio_file;
- ret = mp3_read_info();
- if (ret < 0) {
- mp3.file = NULL;
- return ret;
- }
- write_info_str(info_str);
- *frames = mp3.frames;
- *seconds = mp3.seconds;
- if (*seconds < 2 || !*frames)
- return -E_MP3_INFO;
- return 1;
-}
-
-static int mp3_reposition_stream(long unsigned new_frame)
-{
- int count = 0, len;
-
- PARA_DEBUG_LOG("jmp to frame %lu/%i\n", new_frame, mp3.frames);
- rewind(mp3.file);
- while (count < new_frame && (len = find_valid_start()) > 0) {
-// PARA_DEBUG_LOG("%s: jmp to frame %d\n", __func__, count);
- if (fseek(mp3.file, len, SEEK_CUR) < 0)
- return -E_FSEEK;
- count++;
- }
- if (count != new_frame) {
- rewind(mp3.file);
- return -E_MP3_REPOS;
- }
- return 1;
-}
-
-static int mp3_read_next_chunk(void)
-{
- int len = find_valid_start();
-
- if (len <= 0) {
- if (len < 0)
- PARA_ERROR_LOG("invalid frame len (%d)\n", len);
- return len;
- }
- chunk_size = para_fread(mp3buf, len, 1, mp3.file);
- if (len != chunk_size)
- PARA_DEBUG_LOG("short read (%d/%d)\n", chunk_size, len);
- return chunk_size;
-}
-
-static char *mp3_read_chunk(__a_unused long unsigned chunk_num, ssize_t *len)
-{
- *len = mp3_read_next_chunk();
- if (*len <= 0)
- return NULL;
- return mp3buf;
-}
-
-static void mp3_close_audio_file(void)
-{
- if (!mp3.file)
- return;
- fclose(mp3.file);
- mp3.file = NULL;
-}
-
-static const char* mp3_suffixes[] = {"mp3", NULL};
-void mp3_init(struct audio_format_handler *p)
-{
- af = p;
- af->get_file_info = mp3_get_file_info;
- af->reposition_stream = mp3_reposition_stream;
- af->read_chunk = mp3_read_chunk;
- af->close_audio_file = mp3_close_audio_file;
- af->get_header_info = NULL;
- /* eof_tv gets overwritten in mp3_get_file_info() */
- af->eof_tv.tv_sec = 0;
- af->eof_tv.tv_usec = 100 * 1000;
- af->suffixes = mp3_suffixes;
-}
--- /dev/null
+/*
+ * Copyright (C) 2003-2006 Andre Noll <maan@systemlinux.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ */
+
+/** \file mp3.c para_server's mp3 audio format handler */
+
+/*
+ * This file is based in part on mp3tech.c and mp3tech.h, Copyright (C)
+ * 2000-2001 Cedric Tefft <cedric@earthling.net>, which in turn is based
+ * in part on
+ *
+ * * MP3Info 0.5 by Ricardo Cerqueira <rmc@rccn.net>
+ * * MP3Stat 0.9 by Ed Sweetman <safemode@voicenet.com> and
+ * Johannes Overmann <overmann@iname.com>
+ */
+
+#include "server.cmdline.h"
+#include "server.h"
+#include "afs.h"
+#include "afh.h"
+#include "error.h"
+#include "fd.h"
+
+/** \cond some defines and structs which are only used in this file */
+
+/*
+ * MIN_CONSEC_GOOD_FRAMES defines how many consecutive valid MP3 frames we need
+ * to see before we decide we are looking at a real MP3 file
+ */
+#define MIN_CONSEC_GOOD_FRAMES 3
+
+#define FRAME_HEADER_SIZE 4
+#define MIN_FRAME_SIZE 21
+
+struct mp3header {
+ unsigned long sync;
+ unsigned int version;
+ unsigned int layer;
+ unsigned int crc;
+ unsigned int bitrate;
+ unsigned int freq;
+ unsigned int padding;
+ unsigned int mode;
+ unsigned int copyright;
+ unsigned int original;
+ unsigned int emphasis;
+};
+
+struct id3tag {
+ char title[31];
+ char artist[31];
+ char album[31];
+ char year[5];
+ char comment[31];
+};
+
+struct mp3info {
+ char *filename;
+ FILE *file;
+ struct mp3header header;
+ int id3_isvalid;
+ struct id3tag id3;
+ int vbr;
+ long unsigned br_average;
+ long unsigned seconds;
+ int frames;
+ int freq;
+};
+
+/** \endcond */
+static int frequencies[3][4] = {
+ {22050,24000,16000,50000}, /* MPEG 2.0 */
+ {44100,48000,32000,50000}, /* MPEG 1.0 */
+ {11025,12000,8000,50000} /* MPEG 2.5 */
+};
+
+static int mp3info_bitrate[2][3][14] = {
+{ /* MPEG 2.0 */
+ {32,48,56,64,80,96,112,128,144,160,176,192,224,256}, /* layer 1 */
+ {8,16,24,32,40,48,56,64,80,96,112,128,144,160}, /* layer 2 */
+ {8,16,24,32,40,48,56,64,80,96,112,128,144,160} /* layer 3 */
+},
+
+{ /* MPEG 1.0 */
+ {32,64,96,128,160,192,224,256,288,320,352,384,416,448}, /* layer 1 */
+ {32,48,56,64,80,96,112,128,160,192,224,256,320,384}, /* layer 2 */
+ {32,40,48,56,64,80,96,112,128,160,192,224,256,320} /* layer 3 */
+}
+};
+
+static int frame_size_index[] = {24000, 72000, 72000};
+static const char *mode_text[] = {"stereo", "joint stereo", "dual channel", "mono", "invalid"};
+
+static struct mp3info mp3;
+static char mp3buf[8192];
+static int chunk_size;
+static struct audio_format_handler *af;
+
+static int header_frequency(struct mp3header *h)
+{
+ if (h->version > 2 || h->freq > 3)
+ return -E_HEADER_FREQ;
+ return frequencies[h->version][h->freq];
+}
+
+static const char *header_mode(struct mp3header *h)
+{
+ if (h->mode > 4)
+ h->mode = 4; /* invalid */
+ return mode_text[h->mode];
+}
+static int header_bitrate(struct mp3header *h)
+{
+ if (h->layer > 3 || h->bitrate > 14)
+ return -E_HEADER_BITRATE;
+ return mp3info_bitrate[h->version & 1][3 - h->layer][h->bitrate - 1];
+}
+
+static int frame_length(struct mp3header *header)
+{
+ int hb, hf = header_frequency(header);
+
+ if (hf < 0)
+ return hf;
+ hb = header_bitrate(header);
+ if (hb < 0)
+ return hb;
+ if (header->sync != 0xFFE || header->layer > 3)
+ return -E_FRAME;
+ return frame_size_index[3 - header->layer] *
+ ((header->version & 1) + 1) * hb / hf
+ + header->padding;
+}
+
+static void write_info_str(char *info_str)
+{
+ int v = mp3.id3_isvalid;
+
+ snprintf(info_str, MMD_INFO_SIZE,
+ "audio_file_info1:%d x %lums, %lu kbit/s (%cbr) %i KHz %s\n"
+ "audio_file_info2:%s, by %s\n"
+ "audio_file_info3:A: %s, Y: %s, C: %s\n",
+ mp3.frames,
+ tv2ms(&af->chunk_tv),
+ mp3.br_average,
+ mp3.vbr? 'v' : 'c',
+ mp3.freq / 1000,
+ header_mode(&mp3.header),
+ v && *mp3.id3.title? mp3.id3.title : "(title tag not set)",
+ v && *mp3.id3.artist? mp3.id3.artist : "(artist tag not set)",
+ v && *mp3.id3.album? mp3.id3.album : "(album tag not set)",
+ v && *mp3.id3.year? mp3.id3.year : "????",
+ v && *mp3.id3.comment? mp3.id3.comment : "(comment tag not set)"
+ );
+}
+
+/*
+ * Remove trailing whitespace from the end of a string
+ */
+static char *unpad(char *string)
+{
+ char *pos = string + strlen(string) - 1;
+ while (isspace(pos[0]))
+ (pos--)[0] = 0;
+ return string;
+}
+
+static int compare_headers(struct mp3header *h1,struct mp3header *h2)
+{
+ if ((*(uint*)h1) == (*(uint*)h2))
+ return 1;
+ if ((h1->version == h2->version) &&
+ (h1->layer == h2->layer) &&
+ (h1->crc == h2->crc) &&
+ (h1->freq == h2->freq) &&
+ (h1->mode == h2->mode) &&
+ (h1->copyright == h2->copyright) &&
+ (h1->original == h2->original) &&
+ (h1->emphasis == h2->emphasis))
+ return 1;
+ else
+ return 0;
+}
+
+/**
+ * get next MP3 frame header.
+ *
+ * \param stream to read the header from
+ * \param header structure that gets filled in by get_header()
+ *
+ * \return On success, the header frame length is returned. A return value of
+ * zero means that we did not retrieve a valid frame header, and a negative
+ * return value indicates an error.
+ */
+static int get_header(FILE *file, struct mp3header *header)
+{
+ unsigned char buffer[FRAME_HEADER_SIZE];
+ int fl, ret;
+
+ if (!file || !header)
+ return -E_MP3_NO_FILE;
+ ret = para_fread(buffer, FRAME_HEADER_SIZE, 1, file);
+ if (ret < FRAME_HEADER_SIZE) {
+ header->sync = 0;
+ return ret < 0? ret : 0;
+ }
+ header->layer = (buffer[1] >> 1) & 3;
+ header->sync = (((int)buffer[0]<<4) | ((int)(buffer[1]&0xE0)>>4));
+ if (buffer[1] & 0x10)
+ header->version = (buffer[1] >> 3) & 1;
+ else
+ header->version = 2;
+ if ((header->sync != 0xFFE) || (header->layer != 1)) {
+ header->sync = 0;
+// PARA_DEBUG_LOG("%s: header not found\n", __func__);
+ return 0;
+ }
+ header->crc = buffer[1] & 1;
+ header->bitrate = (buffer[2] >> 4) & 0x0F;
+// PARA_DEBUG_LOG("%s: found header, bitrate: %u\n", __func__,
+// header->bitrate);
+ header->freq = (buffer[2] >> 2) & 0x3;
+ header->padding = (buffer[2] >>1) & 0x1;
+ header->mode = (buffer[3] >> 6) & 0x3;
+ fl = frame_length(header);
+ return (fl >= MIN_FRAME_SIZE)? fl : -E_FRAME_LENGTH;
+}
+
+/**
+ * find the next mp3 header
+ *
+ * \return On success, the length of the next frame header. If the end of the
+ * file was reached, the function returns zero. On errors, a negative value is
+ * returned.
+ *
+ */
+static int mp3_seek_next_header(void)
+{
+ int k, l = 0, c, first_len;
+ struct mp3header h, h2;
+ long valid_start = 0;
+
+ while (1) {
+ while ((c = fgetc(mp3.file)) != 255 && (c != EOF))
+ ; /* nothing */
+ if (c != 255)
+ return 0;
+ ungetc(c, mp3.file);
+ valid_start = ftell(mp3.file);
+ first_len = get_header(mp3.file, &h);
+ if (first_len <= 0)
+ continue;
+ if (fseek(mp3.file, first_len - FRAME_HEADER_SIZE, SEEK_CUR) < 0)
+ return -E_FSEEK;
+ for (k = 1; k < MIN_CONSEC_GOOD_FRAMES; k++) {
+ if ((l = get_header(mp3.file, &h2)) <= 0)
+ break;
+ if (!compare_headers(&h, &h2))
+ break;
+ fseek(mp3.file, l - FRAME_HEADER_SIZE, SEEK_CUR);
+ }
+ if (k == MIN_CONSEC_GOOD_FRAMES) {
+ fseek(mp3.file, valid_start, SEEK_SET);
+ memcpy(&(mp3.header), &h2, sizeof(struct mp3header));
+ return first_len;
+ }
+ }
+}
+
+static int mp3_get_id3(void)
+{
+ char fbuf[4];
+
+ mp3.id3_isvalid = 0;
+ mp3.id3.title[0] = '\0';
+ mp3.id3.artist[0] = '\0';
+ mp3.id3.album[0] = '\0';
+ mp3.id3.comment[0] = '\0';
+ mp3.id3.year[0] = '\0';
+ if (fseek(mp3.file, -128, SEEK_END))
+ return -E_FSEEK;
+ if (para_fread(fbuf, 1, 3, mp3.file) < 0)
+ return -E_FREAD;
+ fbuf[3] = '\0';
+ if (strcmp("TAG", fbuf)) {
+ PARA_INFO_LOG("%s", "no id3 tag\n");
+ return 0;
+ }
+ if (fseek(mp3.file, -125, SEEK_END) < 0)
+ return -E_FSEEK;
+ if (para_fread(mp3.id3.title, 1, 30, mp3.file) != 30)
+ return -E_FREAD;
+ mp3.id3.title[30] = '\0';
+ if (para_fread(mp3.id3.artist, 1, 30, mp3.file) != 30)
+ return -E_FREAD;
+ mp3.id3.artist[30] = '\0';
+ if (para_fread(mp3.id3.album, 1, 30, mp3.file) != 30)
+ return -E_FREAD;
+ mp3.id3.album[30] = '\0';
+ if (para_fread(mp3.id3.year, 1, 4, mp3.file) != 4)
+ return -E_FREAD;
+ mp3.id3.year[4] = '\0';
+ if (para_fread(mp3.id3.comment, 1, 30, mp3.file) != 30)
+ return -E_FREAD;
+ mp3.id3.comment[30] = '\0';
+ mp3.id3_isvalid = 1;
+ unpad(mp3.id3.title);
+ unpad(mp3.id3.artist);
+ unpad(mp3.id3.album);
+ unpad(mp3.id3.year);
+ unpad(mp3.id3.comment);
+ return 1;
+}
+
+static int find_valid_start(void)
+{
+ int frame_len;
+
+ if (!mp3.file)
+ return -E_MP3_NO_FILE;
+ frame_len = get_header(mp3.file, &mp3.header);
+ if (frame_len < 0)
+ return frame_len;
+ if (!frame_len) {
+ frame_len = mp3_seek_next_header();
+ if (frame_len <= 0)
+ return frame_len;
+ } else
+ if (fseek(mp3.file, -FRAME_HEADER_SIZE, SEEK_CUR) < 0)
+ return -E_FSEEK;
+ if (frame_len <= 1) /* FRAME_HEADER_SIZE? */
+ return -E_FRAME_LENGTH;
+ return frame_len;
+}
+
+static int mp3_read_info(void)
+{
+ long fl_avg = 0, freq_avg = 0, br_avg = 0, fcount = 0;
+ int ret, len = 0, old_br = -1;
+ struct timeval total_time = {0, 0};
+
+ ret = mp3_get_id3();
+ if (ret < 0)
+ return ret;
+ rewind(mp3.file);
+ mp3.vbr = 0;
+ mp3.freq = 0;
+ while (1) {
+ int freq, br, fl;
+ struct timeval tmp, cct; /* current chunk time */
+ if (len > 0)
+ if (fseek(mp3.file, len, SEEK_CUR) < 0)
+ return -E_FSEEK;
+ len = find_valid_start();
+ if (len <= 0)
+ break;
+ freq = header_frequency(&mp3.header);
+ br = header_bitrate(&mp3.header);
+ fl = frame_length(&mp3.header);
+ if (freq < 0 || br < 0 || fl < 0)
+ continue;
+ tmp.tv_sec = fl;
+ tmp.tv_usec = 0;
+ tv_divide(br * 125, &tmp, &cct);
+ tv_add(&cct, &total_time, &tmp);
+ total_time = tmp;
+// PARA_DEBUG_LOG("%s: br: %d, freq: %d, fl: %d, cct: %lu\n", __func__, br, freq, fl, cct.tv_usec);
+ fcount++;
+ if (fcount == 1) {
+ freq_avg = freq;
+ br_avg = br;
+ old_br = br;
+ fl_avg = fl;
+ continue;
+ }
+ freq_avg += (freq - freq_avg) / (fcount + 1);
+ fl_avg += (fl - fl_avg) / (fcount + 1);
+ br_avg += (br - br_avg) / (fcount + 1);
+ if (old_br != br)
+ mp3.vbr = 1;
+ old_br = br;
+ }
+ if (!fcount || !freq_avg || !br_avg)
+ return -E_MP3_INFO;
+ mp3.br_average = br_avg;
+ mp3.freq = freq_avg;
+ mp3.frames = fcount;
+ mp3.seconds = (tv2ms(&total_time) + 500) / 1000;
+ tv_divide(fcount, &total_time, &af->chunk_tv);
+ rewind(mp3.file);
+ PARA_DEBUG_LOG("chunk_time: %lums\n", tv2ms(&af->chunk_tv));
+ tv_scale(30, &af->chunk_tv, &af->eof_tv);
+ PARA_DEBUG_LOG("eof timeout: %lu\n", tv2ms(&af->eof_tv));
+ return 1;
+}
+
+/*
+ * Read mp3 information from audio file
+ */
+static int mp3_get_file_info(FILE *audio_file, char *info_str,
+ long unsigned *frames, int *seconds)
+{
+ int ret;
+
+ if (!audio_file)
+ return -E_MP3_NO_FILE;
+ mp3.file = audio_file;
+ ret = mp3_read_info();
+ if (ret < 0) {
+ mp3.file = NULL;
+ return ret;
+ }
+ write_info_str(info_str);
+ *frames = mp3.frames;
+ *seconds = mp3.seconds;
+ if (*seconds < 2 || !*frames)
+ return -E_MP3_INFO;
+ return 1;
+}
+
+static int mp3_reposition_stream(long unsigned new_frame)
+{
+ int count = 0, len;
+
+ PARA_DEBUG_LOG("jmp to frame %lu/%i\n", new_frame, mp3.frames);
+ rewind(mp3.file);
+ while (count < new_frame && (len = find_valid_start()) > 0) {
+// PARA_DEBUG_LOG("%s: jmp to frame %d\n", __func__, count);
+ if (fseek(mp3.file, len, SEEK_CUR) < 0)
+ return -E_FSEEK;
+ count++;
+ }
+ if (count != new_frame) {
+ rewind(mp3.file);
+ return -E_MP3_REPOS;
+ }
+ return 1;
+}
+
+static int mp3_read_next_chunk(void)
+{
+ int len = find_valid_start();
+
+ if (len <= 0) {
+ if (len < 0)
+ PARA_ERROR_LOG("invalid frame len (%d)\n", len);
+ return len;
+ }
+ chunk_size = para_fread(mp3buf, len, 1, mp3.file);
+ if (len != chunk_size)
+ PARA_DEBUG_LOG("short read (%d/%d)\n", chunk_size, len);
+ return chunk_size;
+}
+
+static char *mp3_read_chunk(__a_unused long unsigned chunk_num, ssize_t *len)
+{
+ *len = mp3_read_next_chunk();
+ if (*len <= 0)
+ return NULL;
+ return mp3buf;
+}
+
+static void mp3_close_audio_file(void)
+{
+ if (!mp3.file)
+ return;
+ fclose(mp3.file);
+ mp3.file = NULL;
+}
+
+static const char* mp3_suffixes[] = {"mp3", NULL};
+void mp3_init(struct audio_format_handler *p)
+{
+ af = p;
+ af->get_file_info = mp3_get_file_info;
+ af->reposition_stream = mp3_reposition_stream;
+ af->read_chunk = mp3_read_chunk;
+ af->close_audio_file = mp3_close_audio_file;
+ af->get_header_info = NULL;
+ /* eof_tv gets overwritten in mp3_get_file_info() */
+ af->eof_tv.tv_sec = 0;
+ af->eof_tv.tv_usec = 100 * 1000;
+ af->suffixes = mp3_suffixes;
+}
+++ /dev/null
-/*
- * Copyright (C) 2004-2006 Andre Noll <maan@systemlinux.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- */
-/** \file ogg.c para_server's ogg vorbis audio format handler */
-
-#include <ogg/ogg.h>
-#include <vorbis/codec.h>
-#include <vorbis/vorbisfile.h>
-
-#include "server.cmdline.h"
-#include "server.h"
-#include "afs.h"
-#include "afh.h"
-#include "error.h"
-#include "string.h"
-
-/* must be big enough to hold header */
-#define CHUNK_SIZE 32768
-static double chunk_time = 0.25;
-
-static OggVorbis_File *oggvorbis_file;
-static FILE *infile;
-static int header_len, oggbuf_len, vi_channels;
-static char *header, *oggbuf;
-static ssize_t *chunk_table, max_chunk_len;
-struct audio_format_handler *af;
-static long vi_sampling_rate, vi_bitrate, vi_bitrate_nominal,
- num_chunks;
-
-static int ogg_compute_header_len(void)
-{
- int ret, len, in = fileno(infile);
- unsigned int serial;
- char *buf;
- ogg_page page;
- ogg_packet packet;
- vorbis_comment vc;
- vorbis_info vi;
- ogg_stream_state *stream_in = para_malloc(sizeof(ogg_stream_state));
- ogg_stream_state *stream_out = para_malloc(sizeof(ogg_stream_state));
- ogg_sync_state *sync_in = para_malloc(sizeof(ogg_sync_state));
-
- ogg_sync_init(sync_in);
- vorbis_info_init(&vi);
- vorbis_comment_init(&vc);
- buf = ogg_sync_buffer(sync_in, CHUNK_SIZE);
- len = read(in, buf, CHUNK_SIZE);
- ret = -E_OGG_READ;
- if (len <= 0)
- goto err1;
- ogg_sync_wrote(sync_in, len);
- ret = -E_SYNC_PAGEOUT;
- if (ogg_sync_pageout(sync_in, &page) <= 0)
- goto err1;
- serial = ogg_page_serialno(&page);
- ogg_stream_init(stream_in, serial);
- ogg_stream_init(stream_out, serial);
- ret = ogg_stream_pagein(stream_in, &page);
- if (ret < 0) {
- ret = E_STREAM_PAGEIN;
- goto err2;
- }
- ret = ogg_stream_packetout(stream_in, &packet);
- if (ret != 1) {
- ret = -E_STREAM_PACKETOUT;
- goto err2;
- }
- ret = -E_VORBIS;
- if (vorbis_synthesis_headerin(&vi, &vc, &packet) < 0) {
- goto err2;
- } else
- PARA_INFO_LOG("channels: %i, rate: %li\n", vi.channels,
- vi.rate);
- ogg_stream_packetin(stream_out, &packet);
-
- ret = ogg_sync_pageout(sync_in, &page);
- if (ret <= 0) {
- ret = -E_SYNC_PAGEOUT;
- goto err2;
- }
- ogg_stream_pagein(stream_in, &page);
- ogg_stream_packetout(stream_in, &packet);
- ogg_stream_packetin(stream_out, &packet);
-
- ret = ogg_sync_pageout(sync_in, &page);
- if (ret <= 0) {
- ret = -E_SYNC_PAGEOUT;
- goto err2;
- }
- ogg_stream_pagein(stream_in, &page);
- ogg_stream_packetout(stream_in, &packet);
- ogg_stream_packetin(stream_out, &packet);
-
- header_len = 0;
- while (ogg_stream_flush(stream_out, &page))
- header_len += page.body_len + page.header_len;
- ret = len;
- PARA_INFO_LOG("header_len = %d\n", header_len);
-err2:
- ogg_stream_destroy(stream_in);
- ogg_stream_destroy(stream_out);
-err1:
- ogg_sync_destroy(sync_in);
- vorbis_info_clear(&vi);
- vorbis_comment_clear(&vc);
- return ret;
-}
-
-static void tunetable(void)
-{
- int i = 1, j = -1, lp = 1;
- while (i < num_chunks) {
- if (chunk_table[i] == chunk_table[lp]) {
- i++;
- continue;
- }
- if (j < 0)
- tv_scale(i + 2, &af->chunk_tv, &af->eof_tv);
- for (j = lp; j < i; j++)
- chunk_table[j] = chunk_table[i];
- lp = i;
- }
-#if 1
- for (i = 2; i < num_chunks; i++)
- if (chunk_table[i] != chunk_table[1])
- break;
- lp = i;
- for (i = 2; i < num_chunks - lp; i++)
- chunk_table[i] = chunk_table[i + lp];
-#endif
-}
-
-
-/*
- * Alloc and fill array table of byte offsets. chunk_table[i] is the
- * offset in the current infile at which the sample containing time i *
- * CHUNK_TIME begins.
- */
-static void ogg_compute_chunk_table(double time_total)
-{
- int i, ret, num;
- ssize_t pos = 0, min = 0, old_pos;
-
- old_pos = 0;
- ret = 0;
- num = time_total / chunk_time + 3;
- PARA_DEBUG_LOG("chunk time: %g allocating %d chunk pointers\n",
- chunk_time, num);
- chunk_table = para_malloc(num * sizeof(ogg_int64_t));
- chunk_table[0] = 0;
- max_chunk_len = 0;
- rewind(infile);
- for (i = 1; ret == 0; i++) {
- ogg_int64_t diff;
- ret = ov_time_seek(oggvorbis_file, i * chunk_time);
- if (ret)
- break;
- pos = ov_raw_tell(oggvorbis_file);
- diff = pos - old_pos;
- max_chunk_len = PARA_MAX(max_chunk_len, diff);
- min = (i == 1)? diff : PARA_MIN(min, diff);
- chunk_table[i] = pos;
- if (i < 11 || !((i - 1) % 1000)|| i > num - 11)
- PARA_DEBUG_LOG("chunk #%d: %g secs, pos: %zd, "
- "size: %zd\n", i - 1,
- i * chunk_time, pos, pos - old_pos);
- old_pos = pos;
- }
- num_chunks = i - 1;
- chunk_table[i] = pos;
- tunetable();
- PARA_INFO_LOG("%li chunks (%fs), max chunk: %zd, min chunk: %zd\n",
- num_chunks, chunk_time, max_chunk_len, min);
- rewind(infile);
-}
-
-static void ogg_close_audio_file(void)
-{
- if (oggvorbis_file) {
- PARA_DEBUG_LOG("%s", "ov_clear\n");
- ov_clear(oggvorbis_file);
- free(oggvorbis_file);
- oggvorbis_file = NULL;
- }
- free(header);
- header = NULL;
- header_len = 0;
- free(chunk_table);
- chunk_table = NULL;
- num_chunks = 0;
- free(oggbuf);
- oggbuf = NULL;
- oggbuf_len = 0;
-}
-
-static int ogg_save_header(FILE *file, int header_len)
-{
- int ret;
-
- header = para_malloc(header_len);
- rewind(file);
- ret = read(fileno(file), header, header_len);
- if (ret != header_len)
- return -E_OGG_READ;
- return 1;
-}
-
-/*
- * Init oggvorbis file and write some tech data to given pointers.
- */
-static int ogg_get_file_info(FILE *file, char *info_str, long unsigned *frames,
- int *seconds)
-{
- int ret;
- double time_total;
- vorbis_info *vi;
- ogg_int64_t raw_total;
-
- infile = file;
- if (!file)
- return -E_OGG_NO_FILE;
- ret = ogg_compute_header_len();
- if (ret < 0)
- return ret;
- ret = ogg_save_header(file, header_len);
- if (ret < 0)
- return ret;
- rewind(file);
- oggvorbis_file = para_malloc(sizeof(OggVorbis_File));
- ret = ov_open(file, oggvorbis_file, NULL, 0);
- if (ret < 0) {
- free(oggvorbis_file);
- free(header);
- return -E_OGG_OPEN;
- }
- ret = -E_OGG_INFO;
- vi = ov_info(oggvorbis_file, 0);
- if (!vi)
- goto err;
- time_total = ov_time_total(oggvorbis_file, -1);
- raw_total = ov_raw_total(oggvorbis_file, -1);
- *seconds = time_total;
- vi_sampling_rate = vi->rate;
- vi_bitrate = ov_bitrate(oggvorbis_file, 0);
- vi_bitrate_nominal = vi->bitrate_nominal;
- vi_channels = vi->channels;
- ogg_compute_chunk_table(time_total);
- *frames = num_chunks;
- sprintf(info_str, "audio_file_info1:%lu x %lu, %ldkHz, %d channels, %ldkbps\n"
- "audio_file_info2: \n"
- "audio_file_info3: \n",
- num_chunks, (long unsigned) (chunk_time * 1000 * 1000),
- vi_sampling_rate / 1000, vi_channels, vi_bitrate / 1000
- );
- rewind(file);
- return 1;
-err:
- ogg_close_audio_file();
- return ret;
-}
-
-/*
- * Simple stream reposition routine
- */
-static int ogg_reposition_stream(long unsigned request)
-{
- int ret;
- long seek;
-
- seek = chunk_table[request];
- ret = fseek(infile, seek, SEEK_SET);
- PARA_DEBUG_LOG("seek to %li returned %d. offset:%li\n", seek,
- ret, ftell(infile));
- return ret < 0? -E_OGG_REPOS : 1;
-}
-
-static ogg_int64_t get_chunk_size(long unsigned chunk_num)
-{
- ogg_int64_t ret;
- if (chunk_num >= num_chunks)
- return -1;
- ret = chunk_table[chunk_num + 1] - chunk_table[chunk_num];
- if (!ret)
- return ret;
-#if 0
- PARA_DEBUG_LOG("chunk %d: %lli-%lli (%lli bytes)\n",
- chunk_num,
- chunk_table[chunk_num],
- chunk_table[chunk_num + 1] - 1,
- ret);
-#endif
- return ret;
-}
-
-char *ogg_read_chunk(long unsigned current_chunk, ssize_t *len)
-{
- int ret;
- ogg_int64_t cs = get_chunk_size(current_chunk);
- if (!cs) { /* nothing to send for this run */
- *len = 0;
- return oggbuf;
- }
- if (cs < 0) { /* eof */
- *len = 0;
- return NULL;
- }
- *len = cs;
- if (!oggbuf || oggbuf_len < *len) {
- PARA_INFO_LOG("increasing ogg buffer size (%d -> %zu)\n",
- oggbuf_len, *len);
- oggbuf = para_realloc(oggbuf, *len);
- oggbuf_len = *len;
- }
- ret = read(fileno(infile), oggbuf, *len);
- if (!ret) {
- *len = 0;
- return NULL;
- }
- if (ret < 0) {
- *len = -E_OGG_READ;
- return NULL;
- }
- if (ret != *len)
- PARA_WARNING_LOG("short read (%d/%zd)\n", ret, *len);
- *len = ret;
- return oggbuf;
-}
-
-static char *ogg_get_header_info(int *len)
-{
- *len = header_len;
- return header;
-}
-
-static const char* ogg_suffixes[] = {"ogg", NULL};
-void ogg_init(struct audio_format_handler *p)
-{
- af = p;
- af->reposition_stream = ogg_reposition_stream;
- af->get_file_info = ogg_get_file_info,
- af->read_chunk = ogg_read_chunk;
- af->close_audio_file = ogg_close_audio_file;
- af->get_header_info = ogg_get_header_info;
- af->chunk_tv.tv_sec = 0;
- af->chunk_tv.tv_usec = 250 * 1000;
- tv_scale(3, &af->chunk_tv, &af->eof_tv);
- af->suffixes = ogg_suffixes;
-}
--- /dev/null
+/*
+ * Copyright (C) 2004-2006 Andre Noll <maan@systemlinux.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ */
+/** \file ogg.c para_server's ogg vorbis audio format handler */
+
+#include <ogg/ogg.h>
+#include <vorbis/codec.h>
+#include <vorbis/vorbisfile.h>
+
+#include "server.cmdline.h"
+#include "server.h"
+#include "afs.h"
+#include "afh.h"
+#include "error.h"
+#include "string.h"
+
+/* must be big enough to hold header */
+#define CHUNK_SIZE 32768
+static double chunk_time = 0.25;
+
+static OggVorbis_File *oggvorbis_file;
+static FILE *infile;
+static int header_len, oggbuf_len, vi_channels;
+static char *header, *oggbuf;
+static ssize_t *chunk_table, max_chunk_len;
+struct audio_format_handler *af;
+static long vi_sampling_rate, vi_bitrate, vi_bitrate_nominal,
+ num_chunks;
+
+static int ogg_compute_header_len(void)
+{
+ int ret, len, in = fileno(infile);
+ unsigned int serial;
+ char *buf;
+ ogg_page page;
+ ogg_packet packet;
+ vorbis_comment vc;
+ vorbis_info vi;
+ ogg_stream_state *stream_in = para_malloc(sizeof(ogg_stream_state));
+ ogg_stream_state *stream_out = para_malloc(sizeof(ogg_stream_state));
+ ogg_sync_state *sync_in = para_malloc(sizeof(ogg_sync_state));
+
+ ogg_sync_init(sync_in);
+ vorbis_info_init(&vi);
+ vorbis_comment_init(&vc);
+ buf = ogg_sync_buffer(sync_in, CHUNK_SIZE);
+ len = read(in, buf, CHUNK_SIZE);
+ ret = -E_OGG_READ;
+ if (len <= 0)
+ goto err1;
+ ogg_sync_wrote(sync_in, len);
+ ret = -E_SYNC_PAGEOUT;
+ if (ogg_sync_pageout(sync_in, &page) <= 0)
+ goto err1;
+ serial = ogg_page_serialno(&page);
+ ogg_stream_init(stream_in, serial);
+ ogg_stream_init(stream_out, serial);
+ ret = ogg_stream_pagein(stream_in, &page);
+ if (ret < 0) {
+ ret = E_STREAM_PAGEIN;
+ goto err2;
+ }
+ ret = ogg_stream_packetout(stream_in, &packet);
+ if (ret != 1) {
+ ret = -E_STREAM_PACKETOUT;
+ goto err2;
+ }
+ ret = -E_VORBIS;
+ if (vorbis_synthesis_headerin(&vi, &vc, &packet) < 0) {
+ goto err2;
+ } else
+ PARA_INFO_LOG("channels: %i, rate: %li\n", vi.channels,
+ vi.rate);
+ ogg_stream_packetin(stream_out, &packet);
+
+ ret = ogg_sync_pageout(sync_in, &page);
+ if (ret <= 0) {
+ ret = -E_SYNC_PAGEOUT;
+ goto err2;
+ }
+ ogg_stream_pagein(stream_in, &page);
+ ogg_stream_packetout(stream_in, &packet);
+ ogg_stream_packetin(stream_out, &packet);
+
+ ret = ogg_sync_pageout(sync_in, &page);
+ if (ret <= 0) {
+ ret = -E_SYNC_PAGEOUT;
+ goto err2;
+ }
+ ogg_stream_pagein(stream_in, &page);
+ ogg_stream_packetout(stream_in, &packet);
+ ogg_stream_packetin(stream_out, &packet);
+
+ header_len = 0;
+ while (ogg_stream_flush(stream_out, &page))
+ header_len += page.body_len + page.header_len;
+ ret = len;
+ PARA_INFO_LOG("header_len = %d\n", header_len);
+err2:
+ ogg_stream_destroy(stream_in);
+ ogg_stream_destroy(stream_out);
+err1:
+ ogg_sync_destroy(sync_in);
+ vorbis_info_clear(&vi);
+ vorbis_comment_clear(&vc);
+ return ret;
+}
+
+static void tunetable(void)
+{
+ int i = 1, j = -1, lp = 1;
+ while (i < num_chunks) {
+ if (chunk_table[i] == chunk_table[lp]) {
+ i++;
+ continue;
+ }
+ if (j < 0)
+ tv_scale(i + 2, &af->chunk_tv, &af->eof_tv);
+ for (j = lp; j < i; j++)
+ chunk_table[j] = chunk_table[i];
+ lp = i;
+ }
+#if 1
+ for (i = 2; i < num_chunks; i++)
+ if (chunk_table[i] != chunk_table[1])
+ break;
+ lp = i;
+ for (i = 2; i < num_chunks - lp; i++)
+ chunk_table[i] = chunk_table[i + lp];
+#endif
+}
+
+
+/*
+ * Alloc and fill array table of byte offsets. chunk_table[i] is the
+ * offset in the current infile at which the sample containing time i *
+ * CHUNK_TIME begins.
+ */
+static void ogg_compute_chunk_table(double time_total)
+{
+ int i, ret, num;
+ ssize_t pos = 0, min = 0, old_pos;
+
+ old_pos = 0;
+ ret = 0;
+ num = time_total / chunk_time + 3;
+ PARA_DEBUG_LOG("chunk time: %g allocating %d chunk pointers\n",
+ chunk_time, num);
+ chunk_table = para_malloc(num * sizeof(ogg_int64_t));
+ chunk_table[0] = 0;
+ max_chunk_len = 0;
+ rewind(infile);
+ for (i = 1; ret == 0; i++) {
+ ogg_int64_t diff;
+ ret = ov_time_seek(oggvorbis_file, i * chunk_time);
+ if (ret)
+ break;
+ pos = ov_raw_tell(oggvorbis_file);
+ diff = pos - old_pos;
+ max_chunk_len = PARA_MAX(max_chunk_len, diff);
+ min = (i == 1)? diff : PARA_MIN(min, diff);
+ chunk_table[i] = pos;
+ if (i < 11 || !((i - 1) % 1000)|| i > num - 11)
+ PARA_DEBUG_LOG("chunk #%d: %g secs, pos: %zd, "
+ "size: %zd\n", i - 1,
+ i * chunk_time, pos, pos - old_pos);
+ old_pos = pos;
+ }
+ num_chunks = i - 1;
+ chunk_table[i] = pos;
+ tunetable();
+ PARA_INFO_LOG("%li chunks (%fs), max chunk: %zd, min chunk: %zd\n",
+ num_chunks, chunk_time, max_chunk_len, min);
+ rewind(infile);
+}
+
+static void ogg_close_audio_file(void)
+{
+ if (oggvorbis_file) {
+ PARA_DEBUG_LOG("%s", "ov_clear\n");
+ ov_clear(oggvorbis_file);
+ free(oggvorbis_file);
+ oggvorbis_file = NULL;
+ }
+ free(header);
+ header = NULL;
+ header_len = 0;
+ free(chunk_table);
+ chunk_table = NULL;
+ num_chunks = 0;
+ free(oggbuf);
+ oggbuf = NULL;
+ oggbuf_len = 0;
+}
+
+static int ogg_save_header(FILE *file, int header_len)
+{
+ int ret;
+
+ header = para_malloc(header_len);
+ rewind(file);
+ ret = read(fileno(file), header, header_len);
+ if (ret != header_len)
+ return -E_OGG_READ;
+ return 1;
+}
+
+/*
+ * Init oggvorbis file and write some tech data to given pointers.
+ */
+static int ogg_get_file_info(FILE *file, char *info_str, long unsigned *frames,
+ int *seconds)
+{
+ int ret;
+ double time_total;
+ vorbis_info *vi;
+ ogg_int64_t raw_total;
+
+ infile = file;
+ if (!file)
+ return -E_OGG_NO_FILE;
+ ret = ogg_compute_header_len();
+ if (ret < 0)
+ return ret;
+ ret = ogg_save_header(file, header_len);
+ if (ret < 0)
+ return ret;
+ rewind(file);
+ oggvorbis_file = para_malloc(sizeof(OggVorbis_File));
+ ret = ov_open(file, oggvorbis_file, NULL, 0);
+ if (ret < 0) {
+ free(oggvorbis_file);
+ free(header);
+ return -E_OGG_OPEN;
+ }
+ ret = -E_OGG_INFO;
+ vi = ov_info(oggvorbis_file, 0);
+ if (!vi)
+ goto err;
+ time_total = ov_time_total(oggvorbis_file, -1);
+ raw_total = ov_raw_total(oggvorbis_file, -1);
+ *seconds = time_total;
+ vi_sampling_rate = vi->rate;
+ vi_bitrate = ov_bitrate(oggvorbis_file, 0);
+ vi_bitrate_nominal = vi->bitrate_nominal;
+ vi_channels = vi->channels;
+ ogg_compute_chunk_table(time_total);
+ *frames = num_chunks;
+ sprintf(info_str, "audio_file_info1:%lu x %lu, %ldkHz, %d channels, %ldkbps\n"
+ "audio_file_info2: \n"
+ "audio_file_info3: \n",
+ num_chunks, (long unsigned) (chunk_time * 1000 * 1000),
+ vi_sampling_rate / 1000, vi_channels, vi_bitrate / 1000
+ );
+ rewind(file);
+ return 1;
+err:
+ ogg_close_audio_file();
+ return ret;
+}
+
+/*
+ * Simple stream reposition routine
+ */
+static int ogg_reposition_stream(long unsigned request)
+{
+ int ret;
+ long seek;
+
+ seek = chunk_table[request];
+ ret = fseek(infile, seek, SEEK_SET);
+ PARA_DEBUG_LOG("seek to %li returned %d. offset:%li\n", seek,
+ ret, ftell(infile));
+ return ret < 0? -E_OGG_REPOS : 1;
+}
+
+static ogg_int64_t get_chunk_size(long unsigned chunk_num)
+{
+ ogg_int64_t ret;
+ if (chunk_num >= num_chunks)
+ return -1;
+ ret = chunk_table[chunk_num + 1] - chunk_table[chunk_num];
+ if (!ret)
+ return ret;
+#if 0
+ PARA_DEBUG_LOG("chunk %d: %lli-%lli (%lli bytes)\n",
+ chunk_num,
+ chunk_table[chunk_num],
+ chunk_table[chunk_num + 1] - 1,
+ ret);
+#endif
+ return ret;
+}
+
+char *ogg_read_chunk(long unsigned current_chunk, ssize_t *len)
+{
+ int ret;
+ ogg_int64_t cs = get_chunk_size(current_chunk);
+ if (!cs) { /* nothing to send for this run */
+ *len = 0;
+ return oggbuf;
+ }
+ if (cs < 0) { /* eof */
+ *len = 0;
+ return NULL;
+ }
+ *len = cs;
+ if (!oggbuf || oggbuf_len < *len) {
+ PARA_INFO_LOG("increasing ogg buffer size (%d -> %zu)\n",
+ oggbuf_len, *len);
+ oggbuf = para_realloc(oggbuf, *len);
+ oggbuf_len = *len;
+ }
+ ret = read(fileno(infile), oggbuf, *len);
+ if (!ret) {
+ *len = 0;
+ return NULL;
+ }
+ if (ret < 0) {
+ *len = -E_OGG_READ;
+ return NULL;
+ }
+ if (ret != *len)
+ PARA_WARNING_LOG("short read (%d/%zd)\n", ret, *len);
+ *len = ret;
+ return oggbuf;
+}
+
+static char *ogg_get_header_info(int *len)
+{
+ *len = header_len;
+ return header;
+}
+
+static const char* ogg_suffixes[] = {"ogg", NULL};
+void ogg_init(struct audio_format_handler *p)
+{
+ af = p;
+ af->reposition_stream = ogg_reposition_stream;
+ af->get_file_info = ogg_get_file_info,
+ af->read_chunk = ogg_read_chunk;
+ af->close_audio_file = ogg_close_audio_file;
+ af->get_header_info = ogg_get_header_info;
+ af->chunk_tv.tv_sec = 0;
+ af->chunk_tv.tv_usec = 250 * 1000;
+ tv_scale(3, &af->chunk_tv, &af->eof_tv);
+ af->suffixes = ogg_suffixes;
+}
projects / paraslash.git / commitdiff