[FFmpeg-cvslog] mpegts: Define the section length with a constant

[Luca Barbato]

ffmpeg | branch: release/2.2 | Luca Barbato <lu_zero at gentoo.org> | Sun Aug  3 19:27:07 2014 +0200| [23376ae2f0247ff659724b6a5313639db0c991ad] | committer: Diego Biurrun

mpegts: Define the section length with a constant

The specification says the value is expressed in 10 bits including
the 4-byte CRC.

(cherry picked from commit 89616408e38ac7257e36976723df0e23d6ee1157)
Signed-off-by: Diego Biurrun <diego at biurrun.de>

Conflicts:
	libavformat/mpegtsenc.c

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=23376ae2f0247ff659724b6a5313639db0c991ad
---

 libavformat/mpegtsenc.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 8efd93e..1026200 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -88,6 +88,10 @@ typedef struct MpegTSWrite {
 #define DEFAULT_PES_HEADER_FREQ 16
 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
 
+/* The section length is 12 bits. The first 2 are set to 0, the remaining
+ * 10 bits should not exceed 1021. */
+#define SECTION_LENGTH 1020
+
 static const AVOption options[] = {
     { "mpegts_transport_stream_id", "Set transport_stream_id field.",
       offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
@@ -234,7 +238,7 @@ static void mpegts_write_pat(AVFormatContext *s)
 {
     MpegTSWrite *ts = s->priv_data;
     MpegTSService *service;
-    uint8_t data[1012], *q;
+    uint8_t data[SECTION_LENGTH], *q;
     int i;
 
     q = data;
@@ -250,7 +254,7 @@ static void mpegts_write_pat(AVFormatContext *s)
 static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
 {
     MpegTSWrite *ts = s->priv_data;
-    uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
+    uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
     int val, stream_type, i;
 
     q = data;
@@ -405,7 +409,7 @@ static void mpegts_write_sdt(AVFormatContext *s)
 {
     MpegTSWrite *ts = s->priv_data;
     MpegTSService *service;
-    uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr;
+    uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
     int i, running_status, free_ca_mode, val;
 
     q = data;