/*
- * Copyright (C) 2004-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2004-2009 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 */
+
+/** \file ogg_afh.c Audio format handler for ogg vorbis files. */
#include <inttypes.h>
#include <ogg/ogg.h>
#include <vorbis/codec.h>
-#include <vorbis/vorbisfile.h>
+#include <regex.h>
-#include "server.cmdline.h"
-#include "server.h"
-#include "vss.h"
+#include "para.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 size_t cb_read(void *buf, size_t size, size_t nmemb, void *datasource)
-{
- FILE *f = datasource;
- return fread(buf, size, nmemb, f);
-}
-
-static int cb_seek(__a_unused void *datasource, ogg_int64_t offset,
- int whence)
-{
- FILE *f = datasource;
- return fseek(f, offset, whence);
-}
-
-/* don't do anything as vss still needs the open filehandle */
-static int cb_close(__a_unused void *datasource)
-{
- return 0;
-}
-
-long cb_tell(void *datasource)
-{
- FILE *f = datasource;
- return ftell(f);
-}
-
-int ogg_open_callbacks(void *datasource, OggVorbis_File *vf, ov_callbacks c)
+/* Taken from decoder_example.c of libvorbis-1.2.3. */
+static int read_vorbis_comment(ogg_sync_state *oss, ogg_stream_state *stream,
+ vorbis_info *vi, vorbis_comment *vc)
{
- int ret = ov_open_callbacks(datasource, vf,
- NULL, /* no initial buffer */
- 0, /* no initial bytes */
- c); /* the ov_open_callbacks */
-
- /* FIXME: provide better error codes */
- if (ret == OV_EREAD)
- return -E_OGG_READ;
- if (ret == OV_ENOTVORBIS)
- return -E_OGG_READ;
- if (ret == OV_EVERSION)
- return -E_OGG_READ;
- if (ret == OV_EBADHEADER)
- return -E_OGG_READ;
- if (ret < 0)
- return -E_OGG_READ;
+ ogg_page page;
+ ogg_packet packet;
+ int i = 0;
+
+ while (i < 2) {
+ while (i < 2) {
+ int ret = ogg_sync_pageout(oss, &page);
+ if (ret == 0)
+ break; /* Need more data */
+ if (ret != 1)
+ continue;
+ /*
+ * We can ignore any errors here as they'll also become
+ * apparent at packetout.
+ */
+ ogg_stream_pagein(stream, &page);
+ while (i < 2) {
+ ret = ogg_stream_packetout(stream, &packet);
+ if (ret == 0)
+ break;
+ if (ret < 0)
+ return -E_STREAM_PACKETOUT;
+ ret = vorbis_synthesis_headerin(vi, vc,
+ &packet);
+ if (ret < 0)
+ return -E_VORBIS;
+ i++;
+ }
+ }
+ }
return 1;
-
}
-static int ogg_save_header(FILE *file, struct audio_format_info *afi)
+static int read_vorbis_info(ogg_sync_state *oss, struct afh_info *afhi)
{
- int ret;
-
- afi->header = para_malloc(afi->header_len);
- rewind(file);
- ret = read(fileno(file), afi->header, afi->header_len);
- if (ret == afi->header_len)
- return 1;
- free(afi->header);
- return -E_OGG_READ;
-}
-
-static int ogg_compute_header_len(FILE *file, struct audio_format_info *afi)
-{
- int ret, len, in = fileno(file);
- 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_packet packet;
+ ogg_stream_state stream;
+ ogg_page page;
+ int ret;
- 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;
- PARA_INFO_LOG("channels: %i, rate: %li\n", vi.channels, vi.rate);
- ogg_stream_packetin(stream_out, &packet);
+ if (ogg_sync_pageout(oss, &page) != 1)
+ goto out;
- 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_page_serialno(&page);
+ ogg_stream_init(&stream, ret);
- 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 = -E_STREAM_PAGEIN;
+ if (ogg_stream_pagein(&stream, &page) < 0)
+ goto out;
- afi->header_len = 0;
- while (ogg_stream_flush(stream_out, &page))
- afi->header_len += page.body_len + page.header_len;
- PARA_INFO_LOG("header_len = %d\n", afi->header_len);
- ret = ogg_save_header(file, afi);
-err2:
- ogg_stream_destroy(stream_in);
- ogg_stream_destroy(stream_out);
-err1:
- ogg_sync_destroy(sync_in);
+ ret = -E_STREAM_PACKETOUT;
+ if (ogg_stream_packetout(&stream, &packet) != 1)
+ goto out;
+
+ ret = -E_VORBIS;
+ if (vorbis_synthesis_headerin(&vi, &vc, &packet) < 0)
+ goto out;
+ if (vi.rate == 0)
+ goto out;
+ afhi->channels = vi.channels;
+ afhi->frequency = vi.rate;
+ afhi->bitrate = vi.bitrate_nominal / 1000;
+ PARA_DEBUG_LOG("channels: %i, sampling rate: %i, bitrate: %i\n",
+ afhi->channels, afhi->frequency, afhi->bitrate);
+ ret = read_vorbis_comment(oss, &stream, &vi, &vc);
+ if (ret < 0)
+ goto out;
+ afhi->tags.artist = para_strdup(vorbis_comment_query(&vc, "artist", 0));
+ afhi->tags.title = para_strdup(vorbis_comment_query(&vc, "title", 0));
+ afhi->tags.album = para_strdup(vorbis_comment_query(&vc, "album", 0));
+ afhi->tags.year = para_strdup(vorbis_comment_query(&vc, "year", 0));
+ afhi->tags.comment = para_strdup(vorbis_comment_query(&vc, "comment", 0));
+
+ afhi->header_offset = 0;
+ afhi->header_len = oss->returned;
+ ret = 1;
+out:
vorbis_info_clear(&vi);
vorbis_comment_clear(&vc);
+ ogg_stream_clear(&stream);
return ret;
}
-/*
- * Alloc and fill array table of byte offsets. chunk_table[i] is the
- * offset in the current input file at which the sample containing time i *
- * CHUNK_TIME begins. Always successful.
- */
-static long unsigned ogg_compute_chunk_table(OggVorbis_File *of,
- struct audio_format_info *afi, double time_total)
+static void set_chunk_tv(int num_frames, int num_chunks, int frequency,
+ struct timeval *result)
{
- int i, ret, num;
- ssize_t max_chunk_len, pos = 0, min = 0, old_pos;
- long unsigned num_chunks;
+ uint64_t x = (uint64_t)num_frames * 1000 * 1000
+ / frequency / 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);
- afi->chunk_table = para_malloc(num * sizeof(size_t));
- afi->chunk_table[0] = 0;
- max_chunk_len = 0;
- for (i = 1; ret == 0; i++) {
- ogg_int64_t diff;
- ret = ov_time_seek(of, i * chunk_time);
- if (ret)
- break;
- 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);
- afi->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;
- afi->chunk_table[i] = pos;
- PARA_INFO_LOG("%lu chunks (%fs), max chunk: %zd, min chunk: %zd\n",
- num_chunks, chunk_time, max_chunk_len, min);
- return num_chunks;
+ result->tv_sec = x / 1000 / 1000;
+ result->tv_usec = x % (1000 * 1000);
+ PARA_INFO_LOG("%d chunks, chunk time: %lums\n", num_chunks,
+ tv2ms(result));
}
-/*
- * Init oggvorbis file and write some tech data to given pointers.
- */
-static int ogg_get_file_info(FILE *file, struct audio_format_info *afi)
+/* Write tech data to given audio format handler struct. */
+static int ogg_get_file_info(char *map, size_t numbytes, __a_unused int fd,
+ struct afh_info *afhi)
{
- int ret;
- double time_total;
- vorbis_info *vi;
- ogg_int64_t raw_total;
- long vi_sampling_rate, vi_bitrate;
- OggVorbis_File of;
- static const ov_callbacks ovc = {
- .read_func = cb_read,
- .seek_func = cb_seek,
- .close_func = cb_close,
- .tell_func = cb_tell
- };
-
- if (!file)
- return -E_OGG_NO_FILE;
- ret = ogg_compute_header_len(file, afi);
- if (ret < 0)
- return ret;
- rewind(file);
- ret = ogg_open_callbacks(file, &of, ovc);
- if (ret < 0)
- goto err;
- ret = -E_OGG_INFO;
- vi = ov_info(&of, 0);
- if (!vi)
- goto err;
- time_total = ov_time_total(&of, -1);
- raw_total = ov_raw_total(&of, -1);
- afi->seconds_total = time_total;
- vi_sampling_rate = vi->rate;
- vi_bitrate = ov_bitrate(&of, 0);
- rewind(file);
- afi->chunks_total = ogg_compute_chunk_table(&of, afi, time_total);
- rewind(file);
- sprintf(afi->info_string, "audio_file_info1:%lu x %lu, %ldkHz, "
- "%d channels, %ldkbps\n"
- "audio_file_info2: \n"
- "audio_file_info3: \n",
- afi->chunks_total, (long unsigned) (chunk_time * 1000 * 1000),
- vi_sampling_rate / 1000, vi->channels, vi_bitrate / 1000
- );
- rewind(file);
- afi->chunk_tv.tv_sec = 0;
- afi->chunk_tv.tv_usec = 250 * 1000;
- tv_scale(3, &afi->chunk_tv, &afi->eof_tv);
- ret = 1;
-err:
- ov_clear(&of); /* keeps the file open */
+ ogg_sync_state oss;
+ ogg_page op;
+ long len = numbytes;
+ char *buf;
+ int ret, i, j, frames_per_chunk, ct_size;
+ long long unsigned num_frames = 0;
+
+ ogg_sync_init(&oss);
+ ret = -E_OGG_SYNC;
+ buf = ogg_sync_buffer(&oss, len);
+ if (!buf)
+ goto out;
+ memcpy(buf, map, len);
+ ret = -E_OGG_SYNC;
+ if (ogg_sync_wrote(&oss, len) < 0)
+ goto out;
+ ret = read_vorbis_info(&oss, afhi);
if (ret < 0)
- free(afi->header);
+ goto out;
+ oss.returned = 0;
+ oss.fill = numbytes;
+ /* count ogg packages and get duration of the file */
+ for (i = 0; ogg_sync_pageseek(&oss, &op) > 0; i++)
+ num_frames = ogg_page_granulepos(&op);
+ PARA_INFO_LOG("%d pages, %llu frames\n", i, num_frames);
+ ret = -E_OGG_EMPTY;
+ if (i == 0)
+ goto out;
+ afhi->seconds_total = num_frames / afhi->frequency;
+ /* use roughly one page per chunk */
+ frames_per_chunk = num_frames / i;
+ PARA_INFO_LOG("%lu seconds, %d frames/chunk\n",
+ afhi->seconds_total, frames_per_chunk);
+ ct_size = 250;
+ afhi->chunk_table = para_malloc(ct_size * sizeof(uint32_t));
+ afhi->chunk_table[0] = 0;
+ afhi->chunk_table[1] = afhi->header_len;
+ oss.returned = afhi->header_len;
+ oss.fill = numbytes;
+ for (i = 0, j = 1; ogg_sync_pageseek(&oss, &op) > 0; i++) {
+ int granule = ogg_page_granulepos(&op);
+
+ while (granule > j * frames_per_chunk) {
+ j++;
+ if (j >= ct_size) {
+ ct_size *= 2;
+ afhi->chunk_table = para_realloc(
+ afhi->chunk_table,
+ ct_size * sizeof(uint32_t));
+ }
+ afhi->chunk_table[j] = oss.returned;
+ }
+ }
+ afhi->chunks_total = j;
+ set_chunk_tv(num_frames, j, afhi->frequency, &afhi->chunk_tv);
+ ret = 0;
+out:
+ ogg_sync_clear(&oss);
return ret;
}
static const char* ogg_suffixes[] = {"ogg", NULL};
/**
- * the init function of the ogg vorbis audio format handler
+ * The init function of the ogg vorbis audio format handler.
*
- * \param afh pointer to the struct to initialize
+ * \param afh Pointer to the struct to initialize.
*/
void ogg_init(struct audio_format_handler *afh)
{