mirror of https://github.com/mpv-player/mpv
final cleanup: implemented send_mpeg_pes_packet() and send_mpeg_lpcm_packet() using new send_mpeg_pes_packet_ll()
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19248 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb
parent
dbda0fb631
commit
92c2148d7e
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@ -45,9 +45,10 @@ static unsigned char ps1_header[] = {
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};
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/* Send MPEG <type> PES packet */
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int
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send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
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int type, int my_write (unsigned char *data, int len))
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static int
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send_mpeg_pes_packet_ll(unsigned char *data, int len, int id, uint64_t pts,
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int type, unsigned char *header, int header_len,
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int align4, int my_write (unsigned char *data, int len))
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{
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int ptslen = (pts ? 5 : 0);
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int n = 0;
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@ -71,11 +72,13 @@ send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
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hdr = 3;
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else
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hdr = (ptslen ? 0 : 1);
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if (6 + hdr + ptslen + payload_size > PES_MAX_SIZE)
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payload_size = PES_MAX_SIZE - 6 - hdr - ptslen;
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if (6 + hdr + ptslen + payload_size + header_len > PES_MAX_SIZE)
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payload_size = PES_MAX_SIZE - 6 - hdr - ptslen - header_len;
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if(align4)
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payload_size &= ~3;
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/* construct PES header: packetize */
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plen = payload_size + hdr + ptslen;
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plen = payload_size + hdr + ptslen + header_len;
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pes_header[4] = plen >> 8;
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pes_header[5] = plen & 255;
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idx = 6;
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@ -114,6 +117,12 @@ send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
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else
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pes_header[idx++] = 0x0f;
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}
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if(header_len)
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{
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memcpy(&pes_header[idx], header, header_len);
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idx += header_len;
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}
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my_write (pes_header, idx);
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n = my_write (data, payload_size);
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@ -121,14 +130,24 @@ send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
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len -= n;
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data += n;
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ptslen = 0; /* store PTS only once, at first packet! */
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if(align4 && len < 4)
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break;
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}
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return n;
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}
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int
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send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
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int type, int my_write (unsigned char *data, int len))
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{
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send_mpeg_pes_packet_ll(data, len, id, pts, type, NULL, 0, 0, my_write);
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}
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/* Send MPEG <type> PS packet */
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int
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send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int type,
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send_mpeg_ps_packet(unsigned char *data, int len, int id, uint64_t pts, int type,
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int my_write (unsigned char *data, int len))
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{
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if(type == 2)
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@ -140,97 +159,10 @@ send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int typ
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/* Send MPEG 2 LPCM packet */
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int
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send_mpeg_lpcm_packet (unsigned char* data, int len,
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send_mpeg_lpcm_packet(unsigned char* data, int len,
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int id, uint64_t pts, int freq_id,
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int my_write (unsigned char *data, int len))
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{
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int ptslen = pts ? 5 : 0;
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int n = 0;
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mp_msg (MSGT_HEADER, MSGL_DBG2,
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"MPEG LPCM packet: 0x%x => %lu \n", id, pts);
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memset (pes_header, '\0', PES_MAX_SIZE);
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/* startcode */
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pes_header[0] = 0;
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pes_header[1] = 0;
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pes_header[2] = 1;
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pes_header[3] = 0xBD; /* stream id */
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while (len >= 4)
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{
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int payload_size = PES_MAX_SIZE - 6 - 20; /* max possible data len */
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if( payload_size > len)
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payload_size = len;
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payload_size &= ~3; /* align! */
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/* packetsize */
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pes_header[4] = (payload_size + 3 + ptslen + 7) >> 8;
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pes_header[5] = (payload_size + 3 + ptslen + 7) & 255;
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/* stuffing */
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/* TTCCxxxx CC=css TT=type: 1=STD 0=mpeg1 2=vob */
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pes_header[6] = 0x81;
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/* FFxxxxxx FF=pts flags=2 vs 0 */
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pes_header[7] = ptslen ? 0x80 : 0;
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/* header length */
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pes_header[8] = ptslen;
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if (ptslen)
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{
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int x;
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/* presentation time stamp */
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x = (0x02 << 4) | (((pts >> 30) & 0x07) << 1) | 1;
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pes_header[9] = x;
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x = ((((pts >> 15) & 0x7fff) << 1) | 1);
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pes_header[10] = x >> 8;
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pes_header[11] = x &255;
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x = (((pts & 0x7fff) << 1) | 1);
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pes_header[12] = x >> 8;
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pes_header[13] = x & 255;
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}
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/* ============ LPCM header: (7 bytes) ================= */
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/* Info by mocm@convergence.de */
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/* ID */
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pes_header[ptslen + 9] = id;
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/* number of frames */
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pes_header[ptslen + 10] = 0x07;
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/* first acces unit pointer, i.e. start of audio frame */
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pes_header[ptslen + 11] = 0x00;
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pes_header[ptslen + 12] = 0x04;
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/* audio emphasis on-off 1 bit */
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/* audio mute on-off 1 bit */
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/* reserved 1 bit */
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/* audio frame number 5 bit */
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pes_header[ptslen + 13] = 0x0C;
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/* quantization word length 2 bit */
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/* audio sampling frequency (48khz = 0, 96khz = 1) 2 bit */
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/* reserved 1 bit */
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/* number of audio channels - 1 (e.g. stereo = 1) 3 bit */
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pes_header[ptslen + 14] = 1 | (freq_id << 4);
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/* dynamic range control (0x80 if off) */
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pes_header [ptslen + 15] = 0x80;
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memcpy (&pes_header[6 + 3 + ptslen + 7], data, payload_size);
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n += my_write (pes_header, 6 + 3 + ptslen + 7 + payload_size);
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len -= payload_size;
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data += payload_size;
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ptslen = 0; /* store PTS only once, at first packet! */
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}
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return n;
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unsigned char header[7] = {0xA0, 0x07, 0x00, 0x04, 0x0C, 1 | (freq_id << 4), 0x80};
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send_mpeg_pes_packet_ll(data, len, 0xBD, pts, 2, header, sizeof(header), 1, my_write);
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}
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