#include "afh.h"
#include "error.h"
#include "string.h"
-#include "fd.h"
/** must be big enough to hold header */
#define CHUNK_SIZE 32768
static double chunk_time = 0.25;
-static OggVorbis_File *oggvorbis_file;
+FILE *audio_file;
static int header_len;
static char *header;
-static ssize_t *chunk_table, num_chunks;
+static ssize_t *chunk_table;
static struct audio_format_handler *af;
-static long vi_sampling_rate, vi_bitrate, vi_bitrate_nominal;
+
+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)
+{
+ 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;
+ return 1;
+
+}
static int ogg_compute_header_len(FILE *file)
{
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 input file at which the sample containing time i *
- * CHUNK_TIME begins.
+ * CHUNK_TIME begins. Always successful.
*/
-static void ogg_compute_chunk_table(double time_total)
+static long unsigned ogg_compute_chunk_table(OggVorbis_File *of,
+ double time_total)
{
int i, ret, num;
ssize_t max_chunk_len, pos = 0, min = 0, old_pos;
+ long unsigned num_chunks;
old_pos = 0;
ret = 0;
max_chunk_len = 0;
for (i = 1; ret == 0; 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);
}
num_chunks = i - 1;
chunk_table[i] = pos;
- tunetable();
- PARA_INFO_LOG("%zu chunks (%fs), max chunk: %zd, min chunk: %zd\n",
+ PARA_INFO_LOG("%lu chunks (%fs), max chunk: %zd, min chunk: %zd\n",
num_chunks, chunk_time, max_chunk_len, min);
+ return num_chunks;
}
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;
+ fclose(audio_file);
}
static int ogg_save_header(FILE *file, int len)
header = para_malloc(len);
rewind(file);
ret = read(fileno(file), header, len);
- if (ret != len)
- return -E_OGG_READ;
- return 1;
+ if (ret == len)
+ return 1;
+ free(header);
+ return -E_OGG_READ;
}
/*
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;
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 = ogg_open_callbacks(file, &of, ovc);
+ if (ret < 0)
+ 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);
+ time_total = ov_time_total(&of, -1);
+ raw_total = ov_raw_total(&of, -1);
*seconds = time_total;
vi_sampling_rate = vi->rate;
- vi_bitrate = ov_bitrate(oggvorbis_file, 0);
- vi_bitrate_nominal = vi->bitrate_nominal;
+ vi_bitrate = ov_bitrate(&of, 0);
rewind(file);
- ogg_compute_chunk_table(time_total);
+ *frames = ogg_compute_chunk_table(&of, time_total);
rewind(file);
- *frames = num_chunks;
*vss_chunk_table = chunk_table;
- sprintf(info_str, "audio_file_info1:%zu x %lu, %ldkHz, %d channels, %ldkbps\n"
+ 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),
+ *frames, (long unsigned) (chunk_time * 1000 * 1000),
vi_sampling_rate / 1000, vi->channels, vi_bitrate / 1000
);
rewind(file);
- return 1;
+ audio_file = file;
+ ret = 1;
err:
- ogg_close_audio_file();
+ ov_clear(&of); /* keeps the file open */
+ if (ret < 0)
+ free(header);
return ret;
}
projects / paraslash.git / blobdiff