/*
- * Copyright (C) 2004-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2004-2007 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.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file ogg_afh.c para_server's ogg vorbis audio format handler */
+#include <inttypes.h>
#include <ogg/ogg.h>
#include <vorbis/codec.h>
#include <vorbis/vorbisfile.h>
-#include "server.cmdline.h"
-#include "server.h"
-#include "afs.h"
+#include "para.h"
#include "afh.h"
#include "error.h"
#include "string.h"
+#include "afs.h"
+#include "server.h"
-/* must be big enough to hold header */
+/** 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;
-static struct audio_format_handler *af;
-static long vi_sampling_rate, vi_bitrate, vi_bitrate_nominal,
- num_chunks;
+/** describes a memory-mapped ogg vorbis file */
+struct ogg_datasource {
+ /** the memory mapping */
+ char *map;
+ /** this size of the mapping */
+ off_t numbytes;
+ /** the current position in the mapping */
+ off_t fpos;
+};
+
+static size_t cb_read(void *buf, size_t size, size_t nmemb, void *datasource)
+{
+ struct ogg_datasource *ods = datasource;
+ size_t copy = PARA_MIN(ods->numbytes - ods->fpos, size * nmemb),
+ ret = copy / size;
+ if (!ret)
+ return 0;
+ memcpy(buf, ods->map + ods->fpos, copy);
+// PARA_INFO_LOG("size: %zd, nmemb: %zd, ret: %zd\n", size, nmemb, ret);
+ ods->fpos += ret * size;
+ return ret;
+}
+
+static int cb_seek(void *datasource, ogg_int64_t offset,
+ int whence)
+{
+ struct ogg_datasource *ods = datasource;
+ switch (whence) {
+ case SEEK_SET:
+ if (offset >= 0 && offset <= ods->numbytes) {
+ ods->fpos = offset;
+ return 0;
+ }
+ errno = EINVAL;
+ return -1;
+ break;
+ case SEEK_END:
+ if (offset <= 0 && -offset <= ods->numbytes) {
+ ods->fpos = ods->numbytes + offset;
+ return 0;
+ }
+ errno = EINVAL;
+ return -1;
+ break;
+ case SEEK_CUR:
+ if ((offset >= 0 && offset + ods->fpos > ods->numbytes) ||
+ (offset < 0 && offset + ods->fpos < 0)) {
+ errno = EINVAL;
+ return -1;
+ }
+ ods->fpos += offset;
+ return 0;
+ }
+ errno = EINVAL;
+ return -1;
+}
+
+/* don't do anything as vss still needs the open filehandle */
+static int cb_close(__a_unused void *datasource)
+{
+ return 0;
+}
+
+static long cb_tell(void *datasource)
+{
+ struct ogg_datasource *ods = datasource;
+ return (unsigned long)ods->fpos;
+}
+
+static int ogg_open_callbacks(void *datasource, OggVorbis_File *vf, ov_callbacks c)
+{
+ int ret = ov_open_callbacks(datasource, vf,
+ NULL, /* no initial buffer */
+ 0, /* no initial bytes */
+ c); /* the ov_open_callbacks */
+
+ if (ret == OV_EREAD)
+ return -E_OGG_READ;
+ if (ret == OV_ENOTVORBIS)
+ return -E_VORBIS;
+ if (ret == OV_EVERSION)
+ return -E_OGG_VERSION;
+ if (ret == OV_EBADHEADER)
+ return -E_OGG_BAD_HEADER;
+ if (ret < 0)
+ return -E_OGG_UNKNOWN_ERROR;
+ return 1;
-static int ogg_compute_header_len(void)
+}
+
+static int ogg_compute_header_len(char *map, size_t numbytes,
+ struct afh_info *afhi)
{
- int ret, len, in = fileno(infile);
- unsigned int serial;
+ int ret;
+ size_t len = PARA_MIN(numbytes, CHUNK_SIZE);
+ int serial;
char *buf;
+
ogg_page page;
ogg_packet packet;
vorbis_comment vc;
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);
+ buf = ogg_sync_buffer(sync_in, (long)len);
+ memcpy(buf, map, len);
+ ogg_sync_wrote(sync_in, (long)len);
ret = -E_SYNC_PAGEOUT;
- if (ogg_sync_pageout(sync_in, &page) <= 0)
+ if (ogg_sync_pageout(sync_in, &page) <= 0) {
+ free(stream_in);
+ free(stream_out);
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;
+ ret = -E_STREAM_PAGEIN;
goto err2;
}
ret = ogg_stream_packetout(stream_in, &packet);
goto err2;
}
ret = -E_VORBIS;
- if (vorbis_synthesis_headerin(&vi, &vc, &packet) < 0) {
+ if (vorbis_synthesis_headerin(&vi, &vc, &packet) < 0)
goto err2;
- } else
- PARA_INFO_LOG("channels: %i, rate: %li\n", vi.channels,
- vi.rate);
+ PARA_DEBUG_LOG("channels: %i, rate: %li\n", vi.channels, vi.rate);
ogg_stream_packetin(stream_out, &packet);
ret = ogg_sync_pageout(sync_in, &page);
ogg_stream_packetout(stream_in, &packet);
ogg_stream_packetin(stream_out, &packet);
- header_len = 0;
+ afhi->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);
+ afhi->header_len += page.body_len + page.header_len;
+ PARA_DEBUG_LOG("header_len = %d\n", afhi->header_len);
+ afhi->header_offset = 0;
+ ret = 1;
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);
+ 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, &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.
+ * offset in the current input file at which the sample containing time i *
+ * CHUNK_TIME begins. Always successful.
*/
-static void ogg_compute_chunk_table(double time_total)
+static long unsigned ogg_compute_chunk_table(OggVorbis_File *of,
+ struct afh_info *afhi, long unsigned time_total)
{
int i, ret, num;
- ssize_t pos = 0, min = 0, old_pos;
+ ssize_t max_chunk_len, pos = 0, min = 0, old_pos;
+ long unsigned num_chunks;
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;
+ afhi->chunk_table = para_malloc((num + 1) * sizeof(size_t));
+ afhi->chunk_table[0] = 0;
max_chunk_len = 0;
- rewind(infile);
- for (i = 1; ret == 0; i++) {
+ for (i = 1; ret <= num; i++) {
ogg_int64_t diff;
- ret = ov_time_seek(oggvorbis_file, i * chunk_time);
+ ret = ov_time_seek(of, i * chunk_time);
if (ret)
break;
- pos = ov_raw_tell(oggvorbis_file);
+ pos = ov_raw_tell(of);
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);
+ afhi->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",
+//fi->chunk_table[i] = pos;
+ PARA_DEBUG_LOG("%lu 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 len)
-{
- int ret;
-
- header = para_malloc(len);
- rewind(file);
- ret = read(fileno(file), header, len);
- if (ret != len)
- return -E_OGG_READ;
- return 1;
+ return num_chunks;
}
/*
* 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)
+static int ogg_get_file_info(char *map, size_t numbytes,
+ struct afh_info *afhi)
{
int ret;
- double time_total;
vorbis_info *vi;
- ogg_int64_t raw_total;
+ OggVorbis_File of;
+ const ov_callbacks ovc = {
+ .read_func = cb_read,
+ .seek_func = cb_seek,
+ .close_func = cb_close,
+ .tell_func = cb_tell
+ };
+ struct ogg_datasource ods = {.map = map, .numbytes = numbytes, .fpos = 0};
- infile = file;
- if (!file)
- return -E_OGG_NO_FILE;
- ret = ogg_compute_header_len();
+ ret = ogg_compute_header_len(map, numbytes, afhi);
if (ret < 0)
return ret;
- ret = ogg_save_header(file, header_len);
+ ret = ogg_open_callbacks(&ods, &of, ovc);
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;
- }
+ goto err;
ret = -E_OGG_INFO;
- vi = ov_info(oggvorbis_file, 0);
+ vi = ov_info(&of, 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;
+ afhi->seconds_total = ov_time_total(&of, -1);
+ afhi->frequency = vi->rate;
+ afhi->bitrate = ov_bitrate(&of, 0) / 1000;
+ afhi->channels = vi->channels;
+ afhi->chunks_total = ogg_compute_chunk_table(&of, afhi, afhi->seconds_total);
+ afhi->info_string[0] = '\0';
+ sprintf(afhi->info_string, "%s:\n%s:\n%s:\n",
+ status_item_list[SI_AUDIO_FILE_INFO],
+ status_item_list[SI_TAGINFO1],
+ status_item_list[SI_TAGINFO2]
+ );
+ afhi->chunk_tv.tv_sec = 0;
+ afhi->chunk_tv.tv_usec = 250 * 1000;
+ tv_scale(10 / afhi->channels, &afhi->chunk_tv, &afhi->eof_tv);
+ ret = 1;
err:
- ogg_close_audio_file();
+ ov_clear(&of); /* keeps the file open */
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)
+
+/**
+ * the init function of the ogg vorbis audio format handler
+ *
+ * \param afh pointer to the struct to initialize
+ */
+void ogg_init(struct audio_format_handler *afh)
{
- 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;
+ afh->get_file_info = ogg_get_file_info,
+ afh->suffixes = ogg_suffixes;
}
projects / paraslash.git / blobdiff