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mpegtsbase: Use a bit array instead of an array of gboolean

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Makes know_psi and is_pes 32 times smaller
This commit is contained in:
Edward Hervey 2011-07-19 08:45:51 +02:00
parent beea027d19
commit dc18e2b16d
3 changed files with 26 additions and 22 deletions
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34
gst/mpegtsdemux/mpegtsbase.c
View file

@ -192,11 +192,11 @@ mpegts_base_reset (MpegTSBase * base)
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
mpegts_packetizer_clear (base->packetizer);
memset (base->is_pes, 0, 8192);
memset (base->known_psi, 0, 8192);
memset (base->is_pes, 0, 1024);
memset (base->known_psi, 0, 1024);
/* PAT */
base->known_psi[0] = TRUE;
MPEGTS_BIT_SET (base->known_psi, 0);
/* FIXME : Commenting the Following lines is to be in sync with the following
* commit
@ -234,8 +234,8 @@ mpegts_base_init (MpegTSBase * base, MpegTSBaseClass * klass)
base->programs = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) mpegts_base_free_program);
base->is_pes = g_new0 (gboolean, 8192);
base->known_psi = g_new0 (gboolean, 8192);
base->is_pes = g_new0 (guint8, 1024);
base->known_psi = g_new0 (guint8, 1024);
mpegts_base_reset (base);
base->program_size = sizeof (MpegTSBaseProgram);
base->stream_size = sizeof (MpegTSBaseStream);
@ -533,11 +533,11 @@ mpegts_base_deactivate_pmt (MpegTSBase * base, MpegTSBaseProgram * program)
gst_structure_id_get (stream, QUARK_PID, G_TYPE_UINT, &pid,
QUARK_STREAM_TYPE, G_TYPE_UINT, &stream_type, NULL);
mpegts_base_program_remove_stream (base, program, (guint16) pid);
base->is_pes[pid] = FALSE;
MPEGTS_BIT_UNSET (base->is_pes, pid);
}
/* remove pcr stream */
mpegts_base_program_remove_stream (base, program, program->pcr_pid);
base->is_pes[program->pcr_pid] = FALSE;
MPEGTS_BIT_UNSET (base->is_pes, program->pcr_pid);
}
}
@ -556,11 +556,11 @@ mpegts_base_is_psi (MpegTSBase * base, MpegTSPacketizerPacket * packet)
0x72, 0x73, 0x7E, 0x7F, TABLE_ID_UNSET
};
if (base->known_psi[packet->pid])
if (MPEGTS_BIT_IS_SET (base->known_psi, packet->pid))
retval = TRUE;
/* check is it is a pes pid */
if (base->is_pes[packet->pid])
if (MPEGTS_BIT_IS_SET (base->is_pes, packet->pid))
return FALSE;
if (!retval) {
@ -637,14 +637,14 @@ mpegts_base_apply_pat (MpegTSBase * base, GstStructure * pat_info)
/* FIXME: when this happens it may still be pmt pid of another
* program, so setting to False may make it go through expensive
* path in is_psi unnecessarily */
base->known_psi[program->pmt_pid] = FALSE;
MPEGTS_BIT_UNSET (base->known_psi, program->pmt_pid);
}
program->pmt_pid = pid;
base->known_psi[pid] = TRUE;
MPEGTS_BIT_SET (base->known_psi, pid);
}
} else {
base->known_psi[pid] = TRUE;
MPEGTS_BIT_SET (base->known_psi, pid);
program = mpegts_base_add_program (base, program_number, pid);
}
program->patcount += 1;
@ -684,7 +684,7 @@ mpegts_base_apply_pat (MpegTSBase * base, GstStructure * pat_info)
/* FIXME: when this happens it may still be pmt pid of another
* program, so setting to False may make it go through expensive
* path in is_psi unnecessarily */
base->known_psi[pid] = TRUE;
MPEGTS_BIT_SET (base->known_psi, pid);
mpegts_packetizer_remove_stream (base->packetizer, pid);
}
@ -731,7 +731,7 @@ mpegts_base_apply_pmt (MpegTSBase * base,
program->pmt_info = NULL;
} else {
/* no PAT?? */
base->known_psi[pmt_pid] = TRUE;
MPEGTS_BIT_SET (base->known_psi, pmt_pid);
program = mpegts_base_add_program (base, program_number, pid);
}
@ -740,7 +740,7 @@ mpegts_base_apply_pmt (MpegTSBase * base,
program->pmt_pid = pmt_pid;
program->pcr_pid = pcr_pid;
mpegts_base_program_add_stream (base, program, (guint16) pcr_pid, -1, NULL);
base->is_pes[pcr_pid] = TRUE;
MPEGTS_BIT_SET (base->is_pes, pcr_pid);
for (i = 0; i < gst_value_list_get_size (new_streams); ++i) {
value = gst_value_list_get_value (new_streams, i);
@ -748,7 +748,7 @@ mpegts_base_apply_pmt (MpegTSBase * base,
gst_structure_id_get (stream, QUARK_PID, G_TYPE_UINT, &pid,
QUARK_STREAM_TYPE, G_TYPE_UINT, &stream_type, NULL);
base->is_pes[pid] = TRUE;
MPEGTS_BIT_SET (base->is_pes, pid);
mpegts_base_program_add_stream (base, program,
(guint16) pid, (guint8) stream_type, stream);
@ -1108,7 +1108,7 @@ mpegts_base_chain (GstPad * pad, GstBuffer * buf)
/* we need to push section packet downstream */
res = mpegts_base_push (base, &packet, &section);
} else if (base->is_pes[packet.pid]) {
} else if (MPEGTS_BIT_IS_SET (base->is_pes, packet.pid)) {
/* push the packet downstream */
res = mpegts_base_push (base, &packet, NULL);
} else

12
gst/mpegtsdemux/mpegtsbase.h
View file

@ -105,10 +105,10 @@ struct _MpegTSBase {
GstStructure *pat;
MpegTSPacketizer2 *packetizer;
/* arrays that say whether a pid is a known psi pid or a pes pid
* FIXME: Make these bit arrays so we can make them 8 times smaller */
gboolean *known_psi;
gboolean *is_pes;
/* arrays that say whether a pid is a known psi pid or a pes pid */
/* Use MPEGTS_BIT_* to set/unset/check the values */
guint8 *known_psi;
guint8 *is_pes;
gboolean disposed;
@ -162,6 +162,10 @@ struct _MpegTSBaseClass {
void (*eit_info) (GstStructure *eit);
};
#define MPEGTS_BIT_SET(field, offs) ((field)[(offs) / 8] |= (1 << ((offs) % 8)))
#define MPEGTS_BIT_UNSET(field, offs) ((field)[(offs) / 8] &= ~(1 << ((offs) % 8)))
#define MPEGTS_BIT_IS_SET(field, offs) ((field)[(offs) / 8] & (1 << ((offs) % 8)))
GType mpegts_base_get_type(void);
MpegTSBaseProgram *mpegts_base_get_program (MpegTSBase * base, gint program_number);

2
gst/mpegtsdemux/tsdemux.c
View file

@ -1051,7 +1051,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
case ST_DSMCC_B:
case ST_DSMCC_C:
case ST_DSMCC_D:
base->is_pes[bstream->pid] = FALSE;
MPEGTS_BIT_UNSET (base->is_pes, bstream->pid);
break;
case ST_AUDIO_AAC:
template = gst_static_pad_template_get (&audio_template);