/*
- * Copyright (C) 2007-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2011 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include "afh.h"
#include "afs.h"
#include "net.h"
-#include "vss.h"
#include "fd.h"
#include "ipc.h"
#include "portable_io.h"
*
* \sa osl_compare_func, uint32_compare().
*/
-int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
+static int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
{
return hash_compare((HASH_TYPE *)obj1->data, (HASH_TYPE *)obj2->data);
}
AFHI_BITRATE_OFFSET = 4,
/** Position of the frequency. */
AFHI_FREQUENCY_OFFSET = 8,
- /** Location of the audio file header. */
- AFHI_HEADER_OFFSET_OFFSET = 12,
+ /** Was: Location of the audio file header. */
+ AFHI_UNUSED1_OFFSET = 12,
/* Length of the audio file header. Zero means: No header. */
AFHI_HEADER_LEN_OFFSET = 16,
/** The total number of chunks (4 bytes). */
CHUNKS_TOTAL_OFFSET = 20,
/** The length of the audio file header (4 bytes). */
HEADER_LEN_OFFSET = 24,
- /** The start of the audio file header (4 bytes). */
- HEADER_OFFSET_OFFSET = 28,
+ /** Was: The start of the audio file header (4 bytes). */
+ AFHI_UNUSED2_OFFSET = 28,
/** The seconds part of the chunk time (4 bytes). */
CHUNK_TV_TV_SEC_OFFSET = 32,
/** The microseconds part of the chunk time (4 bytes). */
write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
- write_u32(buf + AFHI_HEADER_OFFSET_OFFSET, afhi->header_offset);
+ write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
- write_u32(buf + HEADER_OFFSET_OFFSET, afhi->header_offset);
+ write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
p = buf + AFHI_INFO_STRING_OFFSET;
afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
- afhi->header_offset = read_u32(buf + AFHI_HEADER_OFFSET_OFFSET);
afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
- afhi->header_offset = read_u32(buf + HEADER_OFFSET_OFFSET);
afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
return 4 * (afhi->chunks_total + 1);
}
-static void save_chunk_table(struct afh_info *afhi, char *buf)
+static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
{
int i;
-
- for (i = 0; i <= afhi->chunks_total; i++)
- write_u32(buf + 4 * i, afhi->chunk_table[i]);
+ uint32_t max = 0, old = 0;
+
+ for (i = 0; i <= afhi->chunks_total; i++) {
+ uint32_t val = afhi->chunk_table[i];
+ write_u32(buf + 4 * i, val);
+ /*
+ * If the first chunk is the header, do not consider it for the
+ * calculation of the largest chunk size.
+ */
+ if (i == 0 || (i == 1 && afhi->header_len > 0)) {
+ old = val;
+ continue;
+ }
+ max = PARA_MAX(max, val - old);
+ old = val;
+ }
+ return max;
}
static void load_chunk_table(struct afh_info *afhi, char *buf)
*
* \return Standard.
*/
-int aft_get_row_of_hash(HASH_TYPE *hash, struct osl_row **row)
+static int aft_get_row_of_hash(HASH_TYPE *hash, struct osl_row **row)
{
const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
*
* \return Positive on success, negative on errors.
*/
-int get_afsi_object_of_path(const char *path, struct osl_object *obj)
+static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
{
struct osl_row *row;
int ret = aft_get_row_of_path(path, &row);
ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
if (ret < 0)
goto err;
- *(struct audio_file_data *)shm_afd = *afd;
buf = shm_afd;
buf += sizeof(*afd);
- save_chunk_table(&afd->afhi, buf);
+ afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
+ *(struct audio_file_data *)shm_afd = *afd;
shm_detach(shm_afd);
return shmid;
err:
return ret;
}
+/**
+ * Extract a afd stored in a shared memory area.
+ *
+ * Attach the shared memory area given by \a shmid, load the audio file data
+ * stored therein and detach the area afterwards. Called by vss, after
+ * receiving a positive response to the request for the next audio file.
+ +
+ * \param shmid The identifier of the shared memory area containing the afd.
+ * \param afd Result pointer.
+ *
+ * \return Standard.
+ */
int load_afd(int shmid, struct audio_file_data *afd)
{
void *shm_afd;
ret = get_audio_file_path_of_row(aft_row, &path);
if (ret < 0)
return ret;
+ PARA_NOTICE_LOG("%s\n", path);
ret = get_afsi_object_of_row(aft_row, &afsi_obj);
if (ret < 0)
return ret;
new_afsi.last_played = time(NULL);
save_afsi(&new_afsi, &afsi_obj); /* in-place update */
+ afd->audio_format_id = old_afsi.audio_format_id;
load_chunk_table(&afd->afhi, chunk_table_obj.data);
ret = make_status_items(afd, &old_afsi, path, score, file_hash);
if (ret < 0)
return ret;
}
-void afs_stat_callback(int fd, const struct osl_object *query)
+static void afs_stat_callback(int fd, const struct osl_object *query)
{
int *parser_friendly = query->data;
char *buf = *parser_friendly?
pass_buffer_as_shm(buf, strlen(buf), &fd);
}
+/**
+ * Get the current afs status items from the afs process and send it using RC4.
+ *
+ * \param rc4c The rc4 context for data encryption.
+ * \param parser_friendly Whether parser-friendly output format should be used.
+ *
+ * As the contents of the afs status items change in time and the command
+ * handler only has a COW version created at fork time, it can not send
+ * up-to-date afs status items directly. Therefore the usual callback mechanism
+ * is used to pass the status items from the afs process to the command handler
+ * via a shared memory area and a pipe.
+ */
int send_afs_status(struct rc4_context *rc4c, int parser_friendly)
{
struct osl_object query = {.data = &parser_friendly,
}
}
+/**
+ * Initialize the audio file table.
+ *
+ * \param t Pointer to the structure to be initialized.
+ */
void aft_init(struct afs_table *t)
{
t->open = aft_open;
projects / paraslash.git / blobdiff