Changeset 376

Timestamp:

12/18/07 23:55:26 (17 years ago)

Author:

r2d

Message:

added LONG_SEEK_TABLE define for a 64 bits long offset in the seek table in libmpcdec. Same change may be done to the encoder.

Location:

libmpc/trunk

Files:

• include/mpc/mpc_types.h (modified) (1 diff)
• include/mpc/mpcdec.h (modified) (1 diff)
• libmpcdec/internal.h (modified) (1 diff)
• libmpcdec/mpc_demux.c (modified) (12 diffs)

libmpc/trunk/include/mpc/mpc_types.h

@@ -73 +73 @@
 typedef mpc_uint8_t mpc_bool_t;
 
+// #define LONG_SEEK_TABLE
+#ifdef LONG_SEEK_TABLE  // define as needed (mpc_uint32_t supports files up to 512 MB)
+typedef mpc_uint64_t mpc_seek_t;
+#else
+typedef mpc_uint32_t mpc_seek_t;
+#endif
+
 # define mpc_int64_min -9223372036854775808ll
 # define mpc_int64_max 9223372036854775807ll

libmpc/trunk/include/mpc/mpcdec.h

@@ -112 +112 @@
 mpc_status mpc_demux_seek_sample(mpc_demux * d, mpc_uint64_t destsample);
 mpc_status mpc_demux_seek_second(mpc_demux * d, double seconds);
-mpc_size_t mpc_demux_pos(mpc_demux * d);
+mpc_seek_t mpc_demux_pos(mpc_demux * d);
 
 

libmpc/trunk/libmpcdec/internal.h

@@ -79 +79 @@
 
         // seeking
-        mpc_uint32_t * seek_table;
+        mpc_seek_t * seek_table;
         mpc_uint_t seek_pwr; /// distance between 2 frames in seek_table = 2^seek_pwr
         mpc_uint32_t seek_table_size; /// used size in seek_table

libmpc/trunk/libmpcdec/mpc_demux.c

@@ -115 +115 @@
  */
 static void
-mpc_demux_seek(mpc_demux * d, mpc_size_t fpos, mpc_uint32_t min_bytes) {
-//      mpc_uint32_t cur_pos = d->r->tell(d->r);
-        mpc_size_t next_pos;
+mpc_demux_seek(mpc_demux * d, mpc_seek_t fpos, mpc_uint32_t min_bytes) {
+        mpc_seek_t next_pos;
         mpc_int_t bit_offset;
 
@@ -142 +141 @@
  * @return current stream position in bits
  */
-mpc_size_t mpc_demux_pos(mpc_demux * d)
-{
-        return ((d->r->tell(d->r) - d->bytes_total + d->bits_reader.buff - d->buffer) << 3) + 8 - d->bits_reader.count;
+mpc_seek_t mpc_demux_pos(mpc_demux * d)
+{
+        return (((mpc_seek_t)(d->r->tell(d->r)) - d->bytes_total +
+                 d->bits_reader.buff - d->buffer) << 3) + 8 - d->bits_reader.count;
 }
 
@@ -208 +208 @@
         if (d->si.block_pwr > d->seek_pwr)
                 d->seek_pwr = d->si.block_pwr;
-        d->seek_table = malloc((size_t)(2 + d->si.samples / (MPC_FRAME_LENGTH << d->seek_pwr)) * sizeof(mpc_uint32_t));
+        d->seek_table = malloc((size_t)(2 + d->si.samples / (MPC_FRAME_LENGTH << d->seek_pwr)) * sizeof(mpc_seek_t));
         if (d->seek_table == 0)
                 return MPC_STATUS_FILE;
-        d->seek_table[0] = (mpc_uint32_t)mpc_demux_pos(d);
+        d->seek_table[0] = (mpc_seek_t)mpc_demux_pos(d);
         d->seek_table_size = 1;
 
@@ -220 +220 @@
 {
         mpc_uint64_t tmp;
-        mpc_uint32_t * table;
+        mpc_seek_t * table;
         mpc_bits_reader r = d->bits_reader;
         mpc_uint_t i;
@@ -228 +228 @@
 
         mpc_bits_get_size(&r, &tmp);
-        d->seek_table_size = (mpc_uint32_t) tmp;
+        d->seek_table_size = (mpc_seek_t) tmp;
         d->seek_pwr = d->si.block_pwr + mpc_bits_read(&r, 4);
         tmp = 2 + d->si.samples / (MPC_FRAME_LENGTH << d->seek_pwr);
         if (tmp < d->seek_table_size) tmp = d->seek_table_size;
-        d->seek_table = malloc((size_t)(tmp * sizeof(mpc_uint32_t)));
+        d->seek_table = malloc((size_t)(tmp * sizeof(mpc_seek_t)));
 
         table = d->seek_table;
         mpc_bits_get_size(&r, &tmp);
-        table[0] = (mpc_uint32_t) (tmp + d->si.header_position) * 8;
+        table[0] = (mpc_seek_t) (tmp + d->si.header_position) * 8;
 
         if (d->seek_table_size == 1)
@@ -242 +242 @@
 
         mpc_bits_get_size(&r, &tmp);
-        table[1] = (mpc_uint32_t) (tmp + d->si.header_position) * 8;
+        table[1] = (mpc_seek_t) (tmp + d->si.header_position) * 8;
 
         for (i = 2; i < d->seek_table_size; i++) {
@@ -255 +255 @@
 static void mpc_demux_SP(mpc_demux * d, int size, int block_size)
 {
-        mpc_size_t cur;
+        mpc_seek_t cur;
         mpc_uint64_t ptr;
         mpc_block b;
@@ -376 +376 @@
                         d->bits_reader.count &= -8;
                         if (d->d->decoded_samples == (d->seek_table_size << d->seek_pwr) * MPC_FRAME_LENGTH) {
-                                d->seek_table[d->seek_table_size] = (mpc_uint32_t) mpc_demux_pos(d);
+                                d->seek_table[d->seek_table_size] = (mpc_seek_t) mpc_demux_pos(d);
                                 d->seek_table_size ++;
                         }
@@ -407 +407 @@
         } else {
                 if (d->d->decoded_samples == (d->seek_table_size << d->seek_pwr) * MPC_FRAME_LENGTH) {
-                        d->seek_table[d->seek_table_size] = (mpc_uint32_t) mpc_demux_pos(d);
+                        d->seek_table[d->seek_table_size] = (mpc_seek_t) mpc_demux_pos(d);
                         d->seek_table_size ++;
                 }
@@ -434 +434 @@
 mpc_status mpc_demux_seek_sample(mpc_demux * d, mpc_uint64_t destsample)
 {
-        mpc_uint32_t fwd, samples_to_skip, fpos, i;
+        mpc_uint32_t fwd, samples_to_skip, i;
         mpc_uint32_t block_samples = MPC_FRAME_LENGTH << d->si.block_pwr;
+        mpc_seek_t fpos;
 
         destsample += d->si.beg_silence;
@@ -467 +468 @@
                         if (memcmp(b.key, "AP", 2) == 0) {
                                 if (d->d->decoded_samples == (d->seek_table_size << d->seek_pwr) * MPC_FRAME_LENGTH) {
-                                        d->seek_table[d->seek_table_size] = (mpc_uint32_t) mpc_demux_pos(d) - 8 * size;
+                                        d->seek_table[d->seek_table_size] = (mpc_seek_t) mpc_demux_pos(d) - 8 * size;
                                         d->seek_table_size ++;
                                 }
@@ -483 +484 @@
                 for( ; i < fwd; i++){
                         if (d->d->decoded_samples == (d->seek_table_size << d->seek_pwr) * MPC_FRAME_LENGTH) {
-                                d->seek_table[d->seek_table_size] = (mpc_uint32_t) mpc_demux_pos(d);
+                                d->seek_table[d->seek_table_size] = (mpc_seek_t) mpc_demux_pos(d);
                                 d->seek_table_size ++;
                         }