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-rw-r--r--gst/mpeg1sys/systems.c421
1 files changed, 211 insertions, 210 deletions
diff --git a/gst/mpeg1sys/systems.c b/gst/mpeg1sys/systems.c
index aa6de41a..20e7bd90 100644
--- a/gst/mpeg1sys/systems.c
+++ b/gst/mpeg1sys/systems.c
@@ -6,25 +6,26 @@
#include "main.h"
-static void buffer_timecode (timecode, marker, buffer)
-guint64 timecode;
-unsigned char marker;
-unsigned char **buffer;
+static void
+buffer_timecode (timecode, marker, buffer)
+ guint64 timecode;
+ unsigned char marker;
+ unsigned char **buffer;
{
unsigned char temp;
- temp = (marker << 4) | ((timecode>>29) & 0x38) |
- ((timecode >> 29) & 0x6) | 1;
- *((*buffer)++)=temp;
+ temp = (marker << 4) | ((timecode >> 29) & 0x38) |
+ ((timecode >> 29) & 0x6) | 1;
+ *((*buffer)++) = temp;
temp = (timecode & 0x3fc00000) >> 22;
- *((*buffer)++)=temp;
+ *((*buffer)++) = temp;
temp = ((timecode & 0x003f8000) >> 14) | 1;
- *((*buffer)++)=temp;
+ *((*buffer)++) = temp;
temp = (timecode & 0x7f80) >> 7;
- *((*buffer)++)=temp;
+ *((*buffer)++) = temp;
temp = ((timecode & 0x007f) << 1) | 1;
- *((*buffer)++)=temp;
+ *((*buffer)++) = temp;
}
/*************************************************************************
@@ -35,152 +36,151 @@ unsigned char **buffer;
*************************************************************************/
-void create_sector (sector, pack, sys_header,
- packet_size, inputbuffer, type,
- buffer_scale, buffer_size, buffers,
- PTS, DTS, timestamps, which_streams )
+void
+create_sector (sector, pack, sys_header,
+ packet_size, inputbuffer, type,
+ buffer_scale, buffer_size, buffers, PTS, DTS, timestamps, which_streams)
-Sector_struc *sector;
-Pack_struc *pack;
-Sys_header_struc *sys_header;
-unsigned int packet_size;
-unsigned char *inputbuffer;
+ Sector_struc *sector;
+ Pack_struc *pack;
+ Sys_header_struc *sys_header;
+ unsigned int packet_size;
+ unsigned char *inputbuffer;
-unsigned char type;
-unsigned char buffer_scale;
-unsigned int buffer_size;
-unsigned char buffers;
-guint64 PTS;
-guint64 DTS;
-unsigned char timestamps;
-unsigned int which_streams;
+ unsigned char type;
+ unsigned char buffer_scale;
+ unsigned int buffer_size;
+ unsigned char buffers;
+ guint64 PTS;
+ guint64 DTS;
+ unsigned char timestamps;
+ unsigned int which_streams;
{
- int i,j,tmp;
- unsigned char *index;
- unsigned char *size_offset;
+ int i, j, tmp;
+ unsigned char *index;
+ unsigned char *size_offset;
- /* printf("creating sector\n"); */
+ /* printf("creating sector\n"); */
- index = sector->buf;
- sector->length_of_sector=0;
+ index = sector->buf;
+ sector->length_of_sector = 0;
/* Should we copy Pack Header information ? */
- if (pack != NULL)
- {
- i = sizeof(pack->buf);
- bcopy (pack->buf, index, i);
- index += i;
- sector->length_of_sector += i;
- }
+ if (pack != NULL) {
+ i = sizeof (pack->buf);
+ bcopy (pack->buf, index, i);
+ index += i;
+ sector->length_of_sector += i;
+ }
/* Should we copy System Header information ? */
- if (sys_header != NULL)
- {
- i = sizeof(sys_header->buf);
+ if (sys_header != NULL) {
+ i = sizeof (sys_header->buf);
- /* only one stream? 3 bytes less in sys header */
- if (which_streams != STREAMS_BOTH) i -= 3;
+ /* only one stream? 3 bytes less in sys header */
+ if (which_streams != STREAMS_BOTH)
+ i -= 3;
- bcopy (sys_header->buf, index, i);
- index += i;
- sector->length_of_sector += i;
- }
+ bcopy (sys_header->buf, index, i);
+ index += i;
+ sector->length_of_sector += i;
+ }
- /* write constant packet header data */
+ /* write constant packet header data */
- *(index++) = (unsigned char)(PACKET_START)>>16;
- *(index++) = (unsigned char)(PACKET_START & 0x00ffff)>>8;
- *(index++) = (unsigned char)(PACKET_START & 0x0000ff);
- *(index++) = type;
+ *(index++) = (unsigned char) (PACKET_START) >> 16;
+ *(index++) = (unsigned char) (PACKET_START & 0x00ffff) >> 8;
+ *(index++) = (unsigned char) (PACKET_START & 0x0000ff);
+ *(index++) = type;
- /* we remember this offset in case we will have to shrink this packet */
-
- size_offset = index;
- *(index++) = (unsigned char)((packet_size - PACKET_HEADER_SIZE)>>8);
- *(index++) = (unsigned char)((packet_size - PACKET_HEADER_SIZE)&0xff);
+ /* we remember this offset in case we will have to shrink this packet */
- *(index++) = STUFFING_BYTE;
- *(index++) = STUFFING_BYTE;
- *(index++) = STUFFING_BYTE;
+ size_offset = index;
+ *(index++) = (unsigned char) ((packet_size - PACKET_HEADER_SIZE) >> 8);
+ *(index++) = (unsigned char) ((packet_size - PACKET_HEADER_SIZE) & 0xff);
- i = 0;
+ *(index++) = STUFFING_BYTE;
+ *(index++) = STUFFING_BYTE;
+ *(index++) = STUFFING_BYTE;
- if (!buffers) i +=2;
- if (timestamps == TIMESTAMPS_NO) i+=9;
- else if (timestamps == TIMESTAMPS_PTS) i+=5;
+ i = 0;
- /* printf("%i stuffing %d\n", i, timestamps); */
-
- for (j=0; j<i; j++)
- *(index++) = STUFFING_BYTE;
+ if (!buffers)
+ i += 2;
+ if (timestamps == TIMESTAMPS_NO)
+ i += 9;
+ else if (timestamps == TIMESTAMPS_PTS)
+ i += 5;
- /* should we write buffer info ? */
+ /* printf("%i stuffing %d\n", i, timestamps); */
- if (buffers)
- {
- *(index++) = (unsigned char) (0x40 |
- (buffer_scale << 5) | (buffer_size >> 8));
- *(index++) = (unsigned char) (buffer_size & 0xff);
- }
+ for (j = 0; j < i; j++)
+ *(index++) = STUFFING_BYTE;
- /* should we write PTS, PTS & DTS or nothing at all ? */
-
- switch (timestamps)
- {
- case TIMESTAMPS_NO:
- *(index++) = MARKER_NO_TIMESTAMPS;
- break;
- case TIMESTAMPS_PTS:
- buffer_timecode (PTS, MARKER_JUST_PTS, &index);
- sector->TS = PTS;
- break;
- case TIMESTAMPS_PTS_DTS:
- buffer_timecode (PTS, MARKER_PTS, &index);
- buffer_timecode (DTS, MARKER_DTS, &index);
- sector->TS = DTS;
- break;
- }
+ /* should we write buffer info ? */
+
+ if (buffers) {
+ *(index++) = (unsigned char) (0x40 |
+ (buffer_scale << 5) | (buffer_size >> 8));
+ *(index++) = (unsigned char) (buffer_size & 0xff);
+ }
+
+ /* should we write PTS, PTS & DTS or nothing at all ? */
+
+ switch (timestamps) {
+ case TIMESTAMPS_NO:
+ *(index++) = MARKER_NO_TIMESTAMPS;
+ break;
+ case TIMESTAMPS_PTS:
+ buffer_timecode (PTS, MARKER_JUST_PTS, &index);
+ sector->TS = PTS;
+ break;
+ case TIMESTAMPS_PTS_DTS:
+ buffer_timecode (PTS, MARKER_PTS, &index);
+ buffer_timecode (DTS, MARKER_DTS, &index);
+ sector->TS = DTS;
+ break;
+ }
/* read in packet data */
-
- i = (packet_size - PACKET_HEADER_SIZE - AFTER_PACKET_LENGTH);
-
- if (type == PADDING_STR)
- {
- for (j=0; j<i; j++)
- *(index++)=(unsigned char) STUFFING_BYTE;
- tmp = i;
- }
- else
- {
- /*tmp = fread (index, sizeof (unsigned char), i, inputstream);*/
- memcpy(index, inputbuffer, i); tmp = i;
- index += tmp;
-
- /* if we did not get enough data bytes, shorten the Packet length */
-
- if (tmp != i)
- {
- packet_size -= (i-tmp);
- *(size_offset++) = (unsigned char)((packet_size - PACKET_HEADER_SIZE)>>8);
- *(size_offset++) = (unsigned char)((packet_size - PACKET_HEADER_SIZE)&0xff);
-
+
+ i = (packet_size - PACKET_HEADER_SIZE - AFTER_PACKET_LENGTH);
+
+ if (type == PADDING_STR) {
+ for (j = 0; j < i; j++)
+ *(index++) = (unsigned char) STUFFING_BYTE;
+ tmp = i;
+ } else {
+ /*tmp = fread (index, sizeof (unsigned char), i, inputstream); */
+ memcpy (index, inputbuffer, i);
+ tmp = i;
+ index += tmp;
+
+ /* if we did not get enough data bytes, shorten the Packet length */
+
+ if (tmp != i) {
+ packet_size -= (i - tmp);
+ *(size_offset++) =
+ (unsigned char) ((packet_size - PACKET_HEADER_SIZE) >> 8);
+ *(size_offset++) =
+ (unsigned char) ((packet_size - PACKET_HEADER_SIZE) & 0xff);
+
/* zero byte stuffing in the last Packet of a stream */
/* we don't need this any more, since we shortenend the packet */
/* for (j=tmp; j<i; j++) */
/* *(index++)=(unsigned char) ZERO_STUFFING_BYTE; */
- }
}
+ }
- /* write other struct data */
+ /* write other struct data */
+
+ sector->length_of_sector += packet_size;
+ sector->length_of_packet_data = tmp;
- sector->length_of_sector += packet_size;
- sector->length_of_packet_data = tmp;
-
}
/*************************************************************************
@@ -189,26 +189,27 @@ unsigned int which_streams;
the sector buffer
*************************************************************************/
-void create_pack (pack, SCR, mux_rate)
+void
+create_pack (pack, SCR, mux_rate)
-Pack_struc *pack;
-unsigned int mux_rate;
-guint64 SCR;
+ Pack_struc *pack;
+ unsigned int mux_rate;
+ guint64 SCR;
{
- unsigned char *index;
-
- index = pack->buf;
-
- *(index++) = (unsigned char)((PACK_START)>>24);
- *(index++) = (unsigned char)((PACK_START & 0x00ff0000)>>16);
- *(index++) = (unsigned char)((PACK_START & 0x0000ff00)>>8);
- *(index++) = (unsigned char)(PACK_START & 0x000000ff);
- buffer_timecode (SCR, MARKER_SCR, &index);
- *(index++) = (unsigned char)(0x80 | (mux_rate >>15));
- *(index++) = (unsigned char)(0xff & (mux_rate >> 7));
- *(index++) = (unsigned char)(0x01 | ((mux_rate & 0x7f)<<1));
- pack->SCR = SCR;
+ unsigned char *index;
+
+ index = pack->buf;
+
+ *(index++) = (unsigned char) ((PACK_START) >> 24);
+ *(index++) = (unsigned char) ((PACK_START & 0x00ff0000) >> 16);
+ *(index++) = (unsigned char) ((PACK_START & 0x0000ff00) >> 8);
+ *(index++) = (unsigned char) (PACK_START & 0x000000ff);
+ buffer_timecode (SCR, MARKER_SCR, &index);
+ *(index++) = (unsigned char) (0x80 | (mux_rate >> 15));
+ *(index++) = (unsigned char) (0xff & (mux_rate >> 7));
+ *(index++) = (unsigned char) (0x01 | ((mux_rate & 0x7f) << 1));
+ pack->SCR = SCR;
}
@@ -218,77 +219,77 @@ guint64 SCR;
the sector buffer
*************************************************************************/
-void create_sys_header (sys_header, rate_bound, audio_bound,
- fixed, CSPS, audio_lock, video_lock,
- video_bound,
- stream1, buffer1_scale, buffer1_size,
- stream2, buffer2_scale, buffer2_size,
- which_streams)
-
-Sys_header_struc *sys_header;
-unsigned int rate_bound;
-unsigned char audio_bound;
-unsigned char fixed;
-unsigned char CSPS;
-unsigned char audio_lock;
-unsigned char video_lock;
-unsigned char video_bound;
-
-unsigned char stream1;
-unsigned char buffer1_scale;
-unsigned int buffer1_size;
-unsigned char stream2;
-unsigned char buffer2_scale;
-unsigned int buffer2_size;
-unsigned int which_streams;
+void
+create_sys_header (sys_header, rate_bound, audio_bound,
+ fixed, CSPS, audio_lock, video_lock,
+ video_bound,
+ stream1, buffer1_scale, buffer1_size,
+ stream2, buffer2_scale, buffer2_size, which_streams)
+
+ Sys_header_struc *sys_header;
+ unsigned int rate_bound;
+ unsigned char audio_bound;
+ unsigned char fixed;
+ unsigned char CSPS;
+ unsigned char audio_lock;
+ unsigned char video_lock;
+ unsigned char video_bound;
+
+ unsigned char stream1;
+ unsigned char buffer1_scale;
+ unsigned int buffer1_size;
+ unsigned char stream2;
+ unsigned char buffer2_scale;
+ unsigned int buffer2_size;
+ unsigned int which_streams;
{
- unsigned char *index;
-
- index = sys_header->buf;
-
- /* if we are not using both streams, we should clear some
- options here */
-
- if (!(which_streams & STREAMS_AUDIO))
- audio_bound = 0;
- if (!(which_streams & STREAMS_VIDEO))
- video_bound = 0;
-
- *(index++) = (unsigned char)((SYS_HEADER_START)>>24);
- *(index++) = (unsigned char)((SYS_HEADER_START & 0x00ff0000)>>16);
- *(index++) = (unsigned char)((SYS_HEADER_START & 0x0000ff00)>>8);
- *(index++) = (unsigned char)(SYS_HEADER_START & 0x000000ff);
-
- if (which_streams == STREAMS_BOTH) {
- *(index++) = (unsigned char)(SYS_HEADER_LENGTH >> 8);
- *(index++) = (unsigned char)(SYS_HEADER_LENGTH & 0xff);
- } else {
- *(index++) = (unsigned char)((SYS_HEADER_LENGTH-3) >> 8);
- *(index++) = (unsigned char)((SYS_HEADER_LENGTH-3) & 0xff);
- }
-
- *(index++) = (unsigned char)(0x80 | (rate_bound >>15));
- *(index++) = (unsigned char)(0xff & (rate_bound >> 7));
- *(index++) = (unsigned char)(0x01 | ((rate_bound & 0x7f)<<1));
- *(index++) = (unsigned char)((audio_bound << 2)|(fixed << 1)|CSPS);
- *(index++) = (unsigned char)((audio_lock << 7)|
- (video_lock << 6)|0x20|video_bound);
-
- *(index++) = (unsigned char)RESERVED_BYTE;
-
- if (which_streams & STREAMS_AUDIO) {
- *(index++) = stream1;
- *(index++) = (unsigned char) (0xc0 |
- (buffer1_scale << 5) | (buffer1_size >> 8));
- *(index++) = (unsigned char) (buffer1_size & 0xff);
- }
-
- if (which_streams & STREAMS_VIDEO) {
- *(index++) = stream2;
- *(index++) = (unsigned char) (0xc0 |
- (buffer2_scale << 5) | (buffer2_size >> 8));
- *(index++) = (unsigned char) (buffer2_size & 0xff);
- }
+ unsigned char *index;
+
+ index = sys_header->buf;
+
+ /* if we are not using both streams, we should clear some
+ options here */
+
+ if (!(which_streams & STREAMS_AUDIO))
+ audio_bound = 0;
+ if (!(which_streams & STREAMS_VIDEO))
+ video_bound = 0;
+
+ *(index++) = (unsigned char) ((SYS_HEADER_START) >> 24);
+ *(index++) = (unsigned char) ((SYS_HEADER_START & 0x00ff0000) >> 16);
+ *(index++) = (unsigned char) ((SYS_HEADER_START & 0x0000ff00) >> 8);
+ *(index++) = (unsigned char) (SYS_HEADER_START & 0x000000ff);
+
+ if (which_streams == STREAMS_BOTH) {
+ *(index++) = (unsigned char) (SYS_HEADER_LENGTH >> 8);
+ *(index++) = (unsigned char) (SYS_HEADER_LENGTH & 0xff);
+ } else {
+ *(index++) = (unsigned char) ((SYS_HEADER_LENGTH - 3) >> 8);
+ *(index++) = (unsigned char) ((SYS_HEADER_LENGTH - 3) & 0xff);
+ }
+
+ *(index++) = (unsigned char) (0x80 | (rate_bound >> 15));
+ *(index++) = (unsigned char) (0xff & (rate_bound >> 7));
+ *(index++) = (unsigned char) (0x01 | ((rate_bound & 0x7f) << 1));
+ *(index++) = (unsigned char) ((audio_bound << 2) | (fixed << 1) | CSPS);
+ *(index++) = (unsigned char) ((audio_lock << 7) |
+ (video_lock << 6) | 0x20 | video_bound);
+
+ *(index++) = (unsigned char) RESERVED_BYTE;
+
+ if (which_streams & STREAMS_AUDIO) {
+ *(index++) = stream1;
+ *(index++) = (unsigned char) (0xc0 |
+ (buffer1_scale << 5) | (buffer1_size >> 8));
+ *(index++) = (unsigned char) (buffer1_size & 0xff);
+ }
+
+ if (which_streams & STREAMS_VIDEO) {
+ *(index++) = stream2;
+ *(index++) = (unsigned char) (0xc0 |
+ (buffer2_scale << 5) | (buffer2_size >> 8));
+ *(index++) = (unsigned char) (buffer2_size & 0xff);
+ }
}
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