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Diffstat (limited to 'epan/dissectors/asn1/mpeg-pes')
-rw-r--r--epan/dissectors/asn1/mpeg-pes/packet-mpeg-pes-template.c161
1 files changed, 82 insertions, 79 deletions
diff --git a/epan/dissectors/asn1/mpeg-pes/packet-mpeg-pes-template.c b/epan/dissectors/asn1/mpeg-pes/packet-mpeg-pes-template.c
index 680fa910..53a3043c 100644
--- a/epan/dissectors/asn1/mpeg-pes/packet-mpeg-pes-template.c
+++ b/epan/dissectors/asn1/mpeg-pes/packet-mpeg-pes-template.c
@@ -14,6 +14,8 @@
#include <epan/packet.h>
#include <epan/asn1.h>
+#include <wsutil/array.h>
+
#include <wiretap/wtap.h>
#include "packet-per.h"
@@ -25,47 +27,47 @@
void proto_register_mpeg_pes(void);
void proto_reg_handoff_mpeg_pes(void);
-static int proto_mpeg = -1;
-static int proto_mpeg_pes = -1;
-
-static int ett_mpeg_pes_pack_header = -1;
-static int ett_mpeg_pes_header_data = -1;
-static int ett_mpeg_pes_trick_mode = -1;
-
-static int hf_mpeg_pes_pack_header = -1;
-static int hf_mpeg_pes_scr = -1;
-static int hf_mpeg_pes_program_mux_rate = -1;
-static int hf_mpeg_pes_stuffing_length = -1;
-static int hf_mpeg_pes_stuffing = -1;
-static int hf_mpeg_pes_extension = -1;
-static int hf_mpeg_pes_header_data = -1;
-static int hf_mpeg_pes_pts = -1;
-static int hf_mpeg_pes_dts = -1;
-static int hf_mpeg_pes_escr = -1;
-static int hf_mpeg_pes_es_rate = -1;
-static int hf_mpeg_pes_dsm_trick_mode = -1;
-static int hf_mpeg_pes_dsm_trick_mode_control = -1;
-static int hf_mpeg_pes_dsm_trick_mode_field_id = -1;
-static int hf_mpeg_pes_dsm_trick_mode_intra_slice_refresh = -1;
-static int hf_mpeg_pes_dsm_trick_mode_frequency_truncation = -1;
-static int hf_mpeg_pes_dsm_trick_mode_rep_cntrl = -1;
-static int hf_mpeg_pes_copy_info = -1;
-static int hf_mpeg_pes_crc = -1;
-static int hf_mpeg_pes_extension_flags = -1;
-static int hf_mpeg_pes_private_data = -1;
-static int hf_mpeg_pes_pack_length = -1;
-static int hf_mpeg_pes_sequence = -1;
-static int hf_mpeg_pes_pstd_buffer = -1;
-static int hf_mpeg_pes_extension2 = -1;
-static int hf_mpeg_pes_padding = -1;
-static int hf_mpeg_pes_data = -1;
-
-static int hf_mpeg_video_sequence_header = -1;
-static int hf_mpeg_video_sequence_extension = -1;
-static int hf_mpeg_video_group_of_pictures = -1;
-static int hf_mpeg_video_picture = -1;
-static int hf_mpeg_video_quantization_matrix = -1;
-static int hf_mpeg_video_data = -1;
+static int proto_mpeg;
+static int proto_mpeg_pes;
+
+static int ett_mpeg_pes_pack_header;
+static int ett_mpeg_pes_header_data;
+static int ett_mpeg_pes_trick_mode;
+
+static int hf_mpeg_pes_pack_header;
+static int hf_mpeg_pes_scr;
+static int hf_mpeg_pes_program_mux_rate;
+static int hf_mpeg_pes_stuffing_length;
+static int hf_mpeg_pes_stuffing;
+static int hf_mpeg_pes_extension;
+static int hf_mpeg_pes_header_data;
+static int hf_mpeg_pes_pts;
+static int hf_mpeg_pes_dts;
+static int hf_mpeg_pes_escr;
+static int hf_mpeg_pes_es_rate;
+static int hf_mpeg_pes_dsm_trick_mode;
+static int hf_mpeg_pes_dsm_trick_mode_control;
+static int hf_mpeg_pes_dsm_trick_mode_field_id;
+static int hf_mpeg_pes_dsm_trick_mode_intra_slice_refresh;
+static int hf_mpeg_pes_dsm_trick_mode_frequency_truncation;
+static int hf_mpeg_pes_dsm_trick_mode_rep_cntrl;
+static int hf_mpeg_pes_copy_info;
+static int hf_mpeg_pes_crc;
+static int hf_mpeg_pes_extension_flags;
+static int hf_mpeg_pes_private_data;
+static int hf_mpeg_pes_pack_length;
+static int hf_mpeg_pes_sequence;
+static int hf_mpeg_pes_pstd_buffer;
+static int hf_mpeg_pes_extension2;
+static int hf_mpeg_pes_padding;
+static int hf_mpeg_pes_data;
+
+static int hf_mpeg_video_sequence_header;
+static int hf_mpeg_video_sequence_extension;
+static int hf_mpeg_video_group_of_pictures;
+static int hf_mpeg_video_picture;
+static int hf_mpeg_video_quantization_matrix;
+static int hf_mpeg_video_data;
static dissector_handle_t mpeg_handle;
@@ -191,34 +193,34 @@ static const value_string mpeg_pes_TrickModeFrequencyTruncation_vals[] = {
#define TSHZ 90000
-static guint64 decode_time_stamp(tvbuff_t *tvb, gint offset, nstime_t *nst)
+static uint64_t decode_time_stamp(tvbuff_t *tvb, int offset, nstime_t *nst)
{
- guint64 bytes = tvb_get_ntoh40(tvb, offset);
- guint64 ts =
+ uint64_t bytes = tvb_get_ntoh40(tvb, offset);
+ uint64_t ts =
(bytes >> 33 & 0x0007) << 30 |
(bytes >> 17 & 0x7fff) << 15 |
(bytes >> 1 & 0x7fff) << 0;
unsigned int rem = (unsigned int)(ts % TSHZ);
nst->secs = (time_t)(ts / TSHZ);
- nst->nsecs = (int)(G_GINT64_CONSTANT(1000000000) * rem / TSHZ);
+ nst->nsecs = (int)(INT64_C(1000000000) * rem / TSHZ);
return ts;
}
#define SCRHZ 27000000
-static guint64 decode_clock_reference(tvbuff_t *tvb, gint offset,
+static uint64_t decode_clock_reference(tvbuff_t *tvb, int offset,
nstime_t *nst)
{
- guint64 bytes = tvb_get_ntoh48(tvb, offset);
- guint64 ts =
+ uint64_t bytes = tvb_get_ntoh48(tvb, offset);
+ uint64_t ts =
(bytes >> 43 & 0x0007) << 30 |
(bytes >> 27 & 0x7fff) << 15 |
(bytes >> 11 & 0x7fff) << 0;
unsigned int ext = (unsigned int)((bytes >> 1) & 0x1ff);
- guint64 cr = 300 * ts + ext;
+ uint64_t cr = 300 * ts + ext;
unsigned int rem = (unsigned int)(cr % SCRHZ);
nst->secs = (time_t)(cr / SCRHZ);
- nst->nsecs = (int)(G_GINT64_CONSTANT(1000000000) * rem / SCRHZ);
+ nst->nsecs = (int)(INT64_C(1000000000) * rem / SCRHZ);
return cr;
}
@@ -230,7 +232,7 @@ dissect_mpeg_pes_header_data(tvbuff_t *tvb, packet_info *pinfo _U_,
0, -1, ENC_NA);
proto_tree *tree = proto_item_add_subtree(item, ett_mpeg_pes_header_data);
- gint offset = 0;
+ int offset = 0;
if (flags & PTS_FLAG) {
nstime_t nst;
decode_time_stamp(tvb, offset, &nst);
@@ -260,8 +262,8 @@ dissect_mpeg_pes_header_data(tvbuff_t *tvb, packet_info *pinfo _U_,
}
if (flags & DSM_TRICK_MODE_FLAG)
{
- guint8 value = tvb_get_guint8(tvb, offset);
- guint8 control;
+ uint8_t value = tvb_get_uint8(tvb, offset);
+ uint8_t control;
proto_tree *trick_tree;
proto_item *trick_item;
@@ -326,7 +328,7 @@ dissect_mpeg_pes_header_data(tvbuff_t *tvb, packet_info *pinfo _U_,
}
if (flags & EXTENSION_FLAG) {
- int flags2 = tvb_get_guint8(tvb, offset);
+ int flags2 = tvb_get_uint8(tvb, offset);
proto_tree_add_item(tree, hf_mpeg_pes_extension_flags, tvb,
offset, 1, ENC_BIG_ENDIAN);
offset++;
@@ -361,8 +363,8 @@ dissect_mpeg_pes_header_data(tvbuff_t *tvb, packet_info *pinfo _U_,
return offset;
}
-static gint
-dissect_mpeg_pes_pack_header(tvbuff_t *tvb, gint offset,
+static int
+dissect_mpeg_pes_pack_header(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *root)
{
unsigned int program_mux_rate, stuffing_length;
@@ -381,7 +383,7 @@ dissect_mpeg_pes_pack_header(tvbuff_t *tvb, gint offset,
program_mux_rate);
offset += 3 * 8;
- stuffing_length = tvb_get_guint8(tvb, offset / 8) & 0x07;
+ stuffing_length = tvb_get_uint8(tvb, offset / 8) & 0x07;
proto_tree_add_item(tree, hf_mpeg_pes_stuffing_length, tvb,
offset / 8, 1, ENC_BIG_ENDIAN);
offset += 1 * 8;
@@ -398,26 +400,26 @@ dissect_mpeg_pes_pack_header(tvbuff_t *tvb, gint offset,
static int
dissect_mpeg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data);
-static gboolean
+static int
// NOLINTNEXTLINE(misc-no-recursion)
dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
int prefix;
int stream;
asn1_ctx_t asn1_ctx;
- gint offset = 0;
- guint8 stream_type;
+ int offset = 0;
+ uint8_t stream_type;
if (!tvb_bytes_exist(tvb, 0, 3))
- return FALSE; /* not enough bytes for a PES prefix */
+ return 0; /* not enough bytes for a PES prefix */
prefix = tvb_get_ntoh24(tvb, 0);
if (prefix != PES_PREFIX)
- return FALSE;
+ return 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPEG PES");
col_clear(pinfo->cinfo, COL_INFO);
- stream = tvb_get_guint8(tvb, 3);
+ stream = tvb_get_uint8(tvb, 3);
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(stream, mpeg_pes_T_stream_vals, "Unknown stream: %d"));
/* Were we called from MP2T providing a stream type from a PMT? */
@@ -427,11 +429,7 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
* to PMT but maps stream_ids to stream_types instead of PIDs.)
*/
-#if 0
- if (tree == NULL)
- return TRUE;
-#endif
- asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+ asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, true, pinfo);
offset = dissect_mpeg_pes_PES(tvb, offset, &asn1_ctx,
tree, proto_mpeg_pes);
@@ -439,7 +437,7 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
if (stream == STREAM_PICTURE) {
int frame_type;
- frame_type = tvb_get_guint8(tvb, 5) >> 3 & 0x07;
+ frame_type = tvb_get_uint8(tvb, 5) >> 3 & 0x07;
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(frame_type, mpeg_pes_T_frame_type_vals, "Unknown frame type: %d"));
offset = dissect_mpeg_pes_Picture(tvb, offset, &asn1_ctx,
@@ -475,7 +473,7 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
es = tvb_new_subset_remaining(tvb, offset / 8);
dissect_mpeg_pes(es, pinfo, tree, NULL);
} else if (stream == STREAM_PACK) {
- if (tvb_get_guint8(tvb, offset / 8) >> 6 == 1) {
+ if (tvb_get_uint8(tvb, offset / 8) >> 6 == 1) {
dissect_mpeg_pes_pack_header(tvb, offset, pinfo, tree);
} else {
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb,
@@ -501,7 +499,7 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
|| stream >= STREAM_AUDIO) {
int length = tvb_get_ntohs(tvb, 4);
- if ((tvb_get_guint8(tvb, 6) & 0xc0) == 0x80) {
+ if ((tvb_get_uint8(tvb, 6) & 0xc0) == 0x80) {
int header_length;
tvbuff_t *es;
int save_offset = offset;
@@ -556,9 +554,9 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
length -= ((offset - save_offset) / 8) - 2;
}
- header_length = tvb_get_guint8(tvb, 8);
+ header_length = tvb_get_uint8(tvb, 8);
if (header_length > 0) {
- int flags = tvb_get_guint8(tvb, 7);
+ int flags = tvb_get_uint8(tvb, 7);
tvbuff_t *header_data = tvb_new_subset_length(tvb, offset / 8,
header_length);
dissect_mpeg_pes_header_data(header_data, pinfo, tree, flags);
@@ -575,13 +573,13 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
} else {
es = tvb_new_subset_length_caplen(tvb, offset / 8, -1, length);
}
- if (!dissector_try_uint_new(stream_type_table, stream_type, es, pinfo, tree, TRUE, NULL)) {
+ if (!dissector_try_uint_new(stream_type_table, stream_type, es, pinfo, tree, true, NULL)) {
/* If we didn't get a stream type, then assume
* MPEG-1/2 Audio or Video.
*/
if (tvb_get_ntoh24(es, 0) == PES_PREFIX)
dissect_mpeg_pes(es, pinfo, tree, NULL);
- else if (tvb_get_guint8(es, 0) == 0xff)
+ else if (tvb_get_uint8(es, 0) == 0xff)
dissect_mpeg(es, pinfo, tree, NULL);
else
proto_tree_add_item(tree, hf_mpeg_pes_data, es,
@@ -601,7 +599,7 @@ dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data
offset / 8, -1, ENC_NA);
}
decrement_dissection_depth(pinfo);
- return TRUE;
+ return tvb_reported_length(tvb);
}
static heur_dissector_list_t heur_subdissector_list;
@@ -620,6 +618,11 @@ dissect_mpeg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_
return tvb_captured_length(tvb);
}
+static bool
+dissect_mpeg_pes_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) {
+ return dissect_mpeg_pes(tvb, pinfo, tree, data) > 0;
+}
+
void
proto_register_mpeg_pes(void)
{
@@ -730,7 +733,7 @@ proto_register_mpeg_pes(void)
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
};
- static gint *ett[] = {
+ static int *ett[] = {
#include "packet-mpeg-pes-ettarr.c"
&ett_mpeg_pes_pack_header,
&ett_mpeg_pes_header_data,
@@ -739,7 +742,7 @@ proto_register_mpeg_pes(void)
proto_mpeg = proto_register_protocol("Moving Picture Experts Group", "MPEG", "mpeg");
mpeg_handle = register_dissector("mpeg", dissect_mpeg, proto_mpeg);
- heur_subdissector_list = register_heur_dissector_list("mpeg", proto_mpeg);
+ heur_subdissector_list = register_heur_dissector_list_with_description("mpeg", "MPEG payload", proto_mpeg);
proto_mpeg_pes = proto_register_protocol("Packetized Elementary Stream", "MPEG PES", "mpeg-pes");
proto_register_field_array(proto_mpeg_pes, hf, array_length(hf));
@@ -753,7 +756,7 @@ void
proto_reg_handoff_mpeg_pes(void)
{
dissector_add_uint("wtap_encap", WTAP_ENCAP_MPEG, mpeg_handle);
- heur_dissector_add("mpeg", dissect_mpeg_pes, "MPEG PES", "mpeg_pes", proto_mpeg_pes, HEURISTIC_ENABLE);
+ heur_dissector_add("mpeg", dissect_mpeg_pes_heur, "MPEG PES", "mpeg_pes", proto_mpeg_pes, HEURISTIC_ENABLE);
dissector_add_uint("mpeg-pes.stream", 0x1B, find_dissector_add_dependency("h264_bytestream", proto_mpeg_pes));
dissector_add_uint("mpeg-pes.stream", 0x24, find_dissector_add_dependency("h265_bytestream", proto_mpeg_pes));
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 01:58:25 +0000