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mpegts: Define the section length with a constant

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The specification says the value is expressed in 10 bits including
the 4-byte CRC.
This commit is contained in:
Luca Barbato 2014-08-03 19:27:07 +02:00
parent 701e8b42e1
commit 89616408e3
1 changed files with 7 additions and 3 deletions
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10
libavformat/mpegtsenc.c
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@ -89,6 +89,10 @@ 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
/* NOTE: 4 bytes must be left at the end for the crc32 */
static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
{
@ -201,7 +205,7 @@ 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;
@ -217,7 +221,7 @@ 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;
@ -372,7 +376,7 @@ 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;