From: Andre Date: Wed, 17 May 2006 19:47:27 +0000 (+0200) Subject: rename mp3.c to mp3_afh.c and ogg.c to ogg_afh.c X-Git-Tag: v0.2.14~106 X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=90501714a4379e36e191a7d5330378f898ac258f;hp=f3ebfd3dcb117f1c4a91c2c9f08d8ed710ee3907 rename mp3.c to mp3_afh.c and ogg.c to ogg_afh.c --- diff --git a/configure.ac b/configure.ac index 89720902..18d6e9cb 100644 --- a/configure.ac +++ b/configure.ac @@ -71,7 +71,7 @@ audiod_errlist_objs="audiod exec close_on_fork signal string daemon stat net 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="" @@ -209,7 +209,7 @@ if test "$have_ogg" = "yes"; then filter_cmdline_objs="$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 diff --git a/error.h b/error.h index dabe82bf..924f9607 100644 --- a/error.h +++ b/error.h @@ -46,8 +46,8 @@ enum para_subsystem { 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, @@ -178,7 +178,7 @@ extern const char **para_errlist[]; 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"), \ @@ -203,7 +203,7 @@ extern const char **para_errlist[]; 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)"), \ @@ -458,8 +458,8 @@ SS_ENUM(OGGDEC); 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); diff --git a/mp3.c b/mp3.c deleted file mode 100644 index 4bd88887..00000000 --- a/mp3.c +++ /dev/null @@ -1,498 +0,0 @@ -/* - * Copyright (C) 2003-2006 Andre Noll - * - * 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 , which in turn is based - * in part on - * - * * MP3Info 0.5 by Ricardo Cerqueira - * * MP3Stat 0.9 by Ed Sweetman and - * Johannes Overmann - */ - -#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; -} diff --git a/mp3_afh.c b/mp3_afh.c new file mode 100644 index 00000000..4bd88887 --- /dev/null +++ b/mp3_afh.c @@ -0,0 +1,498 @@ +/* + * Copyright (C) 2003-2006 Andre Noll + * + * 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 , which in turn is based + * in part on + * + * * MP3Info 0.5 by Ricardo Cerqueira + * * MP3Stat 0.9 by Ed Sweetman and + * Johannes Overmann + */ + +#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; +} diff --git a/ogg.c b/ogg.c deleted file mode 100644 index 3445970b..00000000 --- a/ogg.c +++ /dev/null @@ -1,362 +0,0 @@ -/* - * Copyright (C) 2004-2006 Andre Noll - * - * 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 -#include -#include - -#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; -} diff --git a/ogg_afh.c b/ogg_afh.c new file mode 100644 index 00000000..3445970b --- /dev/null +++ b/ogg_afh.c @@ -0,0 +1,362 @@ +/* + * Copyright (C) 2004-2006 Andre Noll + * + * 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 +#include +#include + +#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; +}