From fdcee83d90c415df6cb570af14073407071fb6bf Mon Sep 17 00:00:00 2001 From: nicodvb Date: Sat, 22 Jul 2006 09:45:34 +0000 Subject: simplified mpeg packetizer used by hw mpeg decoders/vo - first round git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19153 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/mpeg_packetizer.c | 142 +++++++++++++++---------------------------- libmpdemux/mpeg_packetizer.h | 15 ++--- 2 files changed, 54 insertions(+), 103 deletions(-) (limited to 'libmpdemux') diff --git a/libmpdemux/mpeg_packetizer.c b/libmpdemux/mpeg_packetizer.c index 58491c981b..f952d3c5cd 100644 --- a/libmpdemux/mpeg_packetizer.c +++ b/libmpdemux/mpeg_packetizer.c @@ -33,87 +33,26 @@ static unsigned char pes_header[PES_MAX_SIZE]; -static unsigned char ps_header[] = { +static unsigned char ps2_header[] = { 0x00, 0x00, 0x01, 0xba, 0x44, 0x00, 0x04, 0x00, 0x04, 0x01, 0x01, 0x86, 0xa3, 0xf8 }; -/* Send MPEG 1 PES packet */ -int -send_mpeg1_pes_packet (unsigned char *data, int len, int id, uint64_t pts, - int my_write (unsigned char *data, int len)) -{ - int ptslen = pts ? 5 : 1; - int n = 0; - - mp_msg (MSGT_HEADER, MSGL_DBG2, - "MPEG1 PES packet: 0x%x => %lu \n", id, pts); - memset (pes_header, '\0', PES_MAX_SIZE); - /* startcode */ - pes_header[0] = 0; - pes_header[1] = 0; - pes_header[2] = id >> 8; - pes_header[3] = id & 255; - - while (len > 0) - { - int payload_size = len; /* data + PTS */ - if (6 + ptslen + payload_size > PES_MAX_SIZE) - payload_size = PES_MAX_SIZE - (6 + ptslen); - - /* construct PES header: packetsize */ - pes_header[4] = (ptslen + payload_size) >> 8; - pes_header[5] = (ptslen + payload_size) & 255; - - if (ptslen == 5) - { - int x; - /* presentation time stamp */ - x = (0x02 << 4) | (((pts >> 30) & 0x07) << 1) | 1; - pes_header[6] = x; - - x = ((((pts >> 15) & 0x7fff) << 1) | 1); - pes_header[7] = x >> 8; - pes_header[8] = x & 255; - - x = (((pts & 0x7fff) << 1) | 1); - pes_header[9] = x >> 8; - pes_header[10] = x & 255; - } - else - { - /* stuffing and header bits */ - pes_header[6] = 0x0f; - } - - memcpy (&pes_header[6 + ptslen], data, payload_size); - n += my_write (pes_header, 6 + ptslen + payload_size); - - len -= payload_size; - data += payload_size; - ptslen = 1; /* store PTS only once, at first packet! */ - } - - return n; -} - -/* Send MPEG 1 PS packet */ -int -send_mpeg1_ps_packet (unsigned char *data, int len, int id, uint64_t pts, - int my_write (unsigned char *data, int len)) -{ - my_write (ps_header, sizeof (ps_header)); - return send_mpeg1_pes_packet (data, len, id, pts, my_write); -} +static unsigned char ps1_header[] = { + 0x00, 0x00, 0x01, 0xba, 0x21, 0x00, + 0xb9, 0x37, 0x83, 0x80, 0xc3, 0x51, +}; /* Send MPEG 2 PES packet */ int -send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts, +send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts, int type, int my_write (unsigned char *data, int len)) { int ptslen = 5; int n = 0; + int idx, plen; + int hdr; mp_msg (MSGT_HEADER, MSGL_DBG2, "MPEG2 PES packet: 0x%x => %lu \n", id, pts); @@ -128,43 +67,59 @@ send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts, while (len > 0) { int payload_size = len; /* data + PTS */ - if (9 + ptslen + payload_size > PES_MAX_SIZE) - payload_size = PES_MAX_SIZE - (6 + ptslen); + if(type == 2) + hdr = 3; + else + hdr = (ptslen ? 0 : 1); + if (6 + hdr + ptslen + payload_size > PES_MAX_SIZE) + payload_size = PES_MAX_SIZE - 6 - hdr - ptslen; /* construct PES header: packetize */ - pes_header[4] = (3 + ptslen + payload_size) >> 8; - pes_header[5] = (3 + ptslen + payload_size) & 255; - pes_header[6] = 0x81; - + plen = payload_size + hdr + ptslen; + pes_header[4] = plen >> 8; + pes_header[5] = plen & 255; + idx = 6; + if (ptslen) { int x; - pes_header[7] = 0x80; - pes_header[8] = ptslen; + + if(type == 2) + { + pes_header[idx++] = 0x81; + pes_header[idx++] = 0x80; + pes_header[idx++] = ptslen; + } /* presentation time stamp */ x = (0x02 << 4) | (((pts >> 30) & 0x07) << 1) | 1; - pes_header[9] = x; + pes_header[idx++] = x; x = ((((pts >> 15) & 0x7fff) << 1) | 1); - pes_header[10] = x >>8; - pes_header[11] = x & 255; + pes_header[idx++] = x >>8; + pes_header[idx++] = x & 255; x = (((pts & 0x7fff) << 1) | 1); - pes_header[12] = x >> 8; - pes_header[13] = x & 255; + pes_header[idx++] = x >> 8; + pes_header[idx++] = x & 255; } else { - pes_header[7] = 0x00; - pes_header[8] = 0x00; + if(type == 2) + { + pes_header[idx++] = 0x81; + pes_header[idx++] = 0x00; + pes_header[idx++] = 0x00; + } + else + pes_header[idx++] = 0x0f; } + + my_write (pes_header, idx); + n = my_write (data, payload_size); - my_write (pes_header, 9 + ptslen); - n += my_write (data, payload_size); - - len -= payload_size; - data += payload_size; + len -= n; + data += n; ptslen = 0; /* store PTS only once, at first packet! */ } @@ -173,11 +128,14 @@ send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts, /* Send MPEG 2 PS packet */ int -send_mpeg2_ps_packet (unsigned char *data, int len, int id, uint64_t pts, +send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int type, int my_write (unsigned char *data, int len)) { - my_write (ps_header, sizeof (ps_header)); - return send_mpeg2_pes_packet (data, len, id, pts, my_write); + if(type == 2) + my_write (ps2_header, sizeof (ps2_header)); + else + my_write (ps1_header, sizeof (ps1_header)); + return send_mpeg_pes_packet (data, len, id, pts, type, my_write); } /* Send MPEG LPCM packet */ diff --git a/libmpdemux/mpeg_packetizer.h b/libmpdemux/mpeg_packetizer.h index 4e8334eed0..ce68ef6c5c 100644 --- a/libmpdemux/mpeg_packetizer.h +++ b/libmpdemux/mpeg_packetizer.h @@ -25,19 +25,12 @@ #ifndef _MPEG_PACKETIZER_H_ #define _MPEG_PACKETIZER_H_ -/* Send MPEG 1 PES packet */ -int send_mpeg1_pes_packet (unsigned char *data, int len, int id, uint64_t pts, +/* Send MPEG 1/2 PES packet */ +int send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts, int type, int my_write (unsigned char *data, int len)); -/* Send MPEG 1 PS packet */ -int send_mpeg1_ps_packet (unsigned char *data, int len, int id, uint64_t pts, - int my_write (unsigned char *data, int len)); -/* Send MPEG 2 PES packet */ -int send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts, - int my_write (unsigned char *data, int len)); - -/* Send MPEG 2 PS packet */ -int send_mpeg2_ps_packet (unsigned char *data, int len, int id, uint64_t pts, +/* Send MPEG 1/2 PS packet */ +int send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int type, int my_write (unsigned char *data, int len)); /* Send MPEG LPCM packet */ -- cgit v1.2.3