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https://github.com/ossrs/srs.git
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for #293, support http ts stream. 2.0.101
This commit is contained in:
winlin
parent
dfe385d0c9
commit
2a05783d5c
7 changed files with 419 additions and 375 deletions
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@ -51,369 +51,23 @@ using namespace std;
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#include <srs_kernel_file.hpp>
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#include <srs_protocol_buffer.hpp>
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// max PES packets size to flush the video.
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#define SRS_AUTO_HLS_AUDIO_CACHE_SIZE 1024 * 1024
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// drop the segment when duration of ts too small.
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#define SRS_AUTO_HLS_SEGMENT_MIN_DURATION_MS 100
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// @see: NGX_RTMP_HLS_DELAY,
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// 63000: 700ms, ts_tbn=90000
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#define SRS_AUTO_HLS_DELAY 63000
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// @see: ngx_rtmp_mpegts_header
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u_int8_t mpegts_header[] = {
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/* TS */
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0x47, 0x40, 0x00, 0x10, 0x00,
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/* PSI */
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0x00, 0xb0, 0x0d, 0x00, 0x01, 0xc1, 0x00, 0x00,
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/* PAT */
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0x00, 0x01, 0xf0, 0x01,
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/* CRC */
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0x2e, 0x70, 0x19, 0x05,
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/* stuffing 167 bytes */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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/* TS */
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0x47, 0x50, 0x01, 0x10, 0x00,
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/* PSI */
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0x02, 0xb0, 0x17, 0x00, 0x01, 0xc1, 0x00, 0x00,
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/* PMT */
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0xe1, 0x00,
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0xf0, 0x00,
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// must generate header with/without video, @see:
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// https://github.com/winlinvip/simple-rtmp-server/issues/40
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0x1b, 0xe1, 0x00, 0xf0, 0x00, /* h264, pid=0x100=256 */
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0x0f, 0xe1, 0x01, 0xf0, 0x00, /* aac, pid=0x101=257 */
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/*0x03, 0xe1, 0x01, 0xf0, 0x00,*/ /* mp3 */
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/* CRC */
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0x2f, 0x44, 0xb9, 0x9b, /* crc for aac */
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/*0x4e, 0x59, 0x3d, 0x1e,*/ /* crc for mp3 */
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/* stuffing 157 bytes */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
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};
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// @see: ngx_rtmp_mpegts.c
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// TODO: support full mpegts feature in future.
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class SrsMpegtsWriter
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{
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public:
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static int write_header(SrsFileWriter* writer)
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{
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int ret = ERROR_SUCCESS;
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if ((ret = writer->write(mpegts_header, sizeof(mpegts_header), NULL)) != ERROR_SUCCESS) {
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ret = ERROR_HLS_WRITE_FAILED;
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srs_error("write ts file header failed. ret=%d", ret);
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return ret;
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}
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return ret;
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}
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static int write_frame(SrsFileWriter* writer, SrsMpegtsFrame* frame, SrsSimpleBuffer* buffer)
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{
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int ret = ERROR_SUCCESS;
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if (!buffer->bytes() || buffer->length() <= 0) {
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return ret;
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}
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char* last = buffer->bytes() + buffer->length();
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char* pos = buffer->bytes();
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bool first = true;
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while (pos < last) {
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static char packet[188];
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char* p = packet;
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frame->cc++;
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// sync_byte; //8bits
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*p++ = 0x47;
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// pid; //13bits
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*p++ = (frame->pid >> 8) & 0x1f;
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// payload_unit_start_indicator; //1bit
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if (first) {
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p[-1] |= 0x40;
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}
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*p++ = frame->pid;
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// transport_scrambling_control; //2bits
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// adaption_field_control; //2bits, 0x01: PayloadOnly
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// continuity_counter; //4bits
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*p++ = 0x10 | (frame->cc & 0x0f);
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if (first) {
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first = false;
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if (frame->key) {
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p[-1] |= 0x20; // Both Adaption and Payload
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*p++ = 7; // size
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*p++ = 0x50; // random access + PCR
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p = write_pcr(p, frame->dts - SRS_AUTO_HLS_DELAY);
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}
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// PES header
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// packet_start_code_prefix; //24bits, '00 00 01'
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*p++ = 0x00;
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*p++ = 0x00;
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*p++ = 0x01;
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//8bits
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*p++ = frame->sid;
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// pts(33bits) need 5bytes.
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u_int8_t header_size = 5;
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u_int8_t flags = 0x80; // pts
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// dts(33bits) need 5bytes also
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if (frame->dts != frame->pts) {
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header_size += 5;
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flags |= 0x40; // dts
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}
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// 3bytes: flag fields from PES_packet_length to PES_header_data_length
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int pes_size = (last - pos) + header_size + 3;
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if (pes_size > 0xffff) {
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/**
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* when actual packet length > 0xffff(65535),
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* which exceed the max u_int16_t packet length,
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* use 0 packet length, the next unit start indicates the end of packet.
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*/
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pes_size = 0;
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}
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// PES_packet_length; //16bits
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*p++ = (pes_size >> 8);
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*p++ = pes_size;
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// PES_scrambling_control; //2bits, '10'
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// PES_priority; //1bit
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// data_alignment_indicator; //1bit
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// copyright; //1bit
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// original_or_copy; //1bit
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*p++ = 0x80; /* H222 */
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// PTS_DTS_flags; //2bits
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// ESCR_flag; //1bit
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// ES_rate_flag; //1bit
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// DSM_trick_mode_flag; //1bit
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// additional_copy_info_flag; //1bit
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// PES_CRC_flag; //1bit
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// PES_extension_flag; //1bit
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*p++ = flags;
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// PES_header_data_length; //8bits
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*p++ = header_size;
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// pts; // 33bits
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p = write_pts(p, flags >> 6, frame->pts + SRS_AUTO_HLS_DELAY);
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// dts; // 33bits
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if (frame->dts != frame->pts) {
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p = write_pts(p, 1, frame->dts + SRS_AUTO_HLS_DELAY);
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}
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}
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int body_size = sizeof(packet) - (p - packet);
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int in_size = last - pos;
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if (body_size <= in_size) {
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memcpy(p, pos, body_size);
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pos += body_size;
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} else {
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p = fill_stuff(p, packet, body_size, in_size);
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memcpy(p, pos, in_size);
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pos = last;
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}
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// write ts packet
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if ((ret = writer->write(packet, sizeof(packet), NULL)) != ERROR_SUCCESS) {
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ret = ERROR_HLS_WRITE_FAILED;
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srs_error("write ts file failed. ret=%d", ret);
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return ret;
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}
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}
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return ret;
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}
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private:
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static char* fill_stuff(char* pes_body_end, char* packet, int body_size, int in_size)
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{
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char* p = pes_body_end;
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// insert the stuff bytes before PES body
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int stuff_size = (body_size - in_size);
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// adaption_field_control; //2bits
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if (packet[3] & 0x20) {
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// has adaptation
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// packet[4]: adaption_field_length
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// packet[5]: adaption field data
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// base: start of PES body
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char* base = &packet[5] + packet[4];
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int len = p - base;
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p = (char*)memmove(base + stuff_size, base, len) + len;
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// increase the adaption field size.
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packet[4] += stuff_size;
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return p;
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}
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// create adaption field.
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// adaption_field_control; //2bits
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packet[3] |= 0x20;
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// base: start of PES body
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char* base = &packet[4];
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int len = p - base;
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p = (char*)memmove(base + stuff_size, base, len) + len;
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// adaption_field_length; //8bits
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packet[4] = (stuff_size - 1);
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if (stuff_size >= 2) {
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// adaption field flags.
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packet[5] = 0;
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// adaption data.
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if (stuff_size > 2) {
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memset(&packet[6], 0xff, stuff_size - 2);
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}
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}
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return p;
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}
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static char* write_pcr(char* p, int64_t pcr)
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{
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// the pcr=dts-delay
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// and the pcr maybe negative
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// @see https://github.com/winlinvip/simple-rtmp-server/issues/268
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int64_t v = srs_max(0, pcr);
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*p++ = (char) (v >> 25);
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*p++ = (char) (v >> 17);
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*p++ = (char) (v >> 9);
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*p++ = (char) (v >> 1);
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*p++ = (char) (v << 7 | 0x7e);
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*p++ = 0;
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return p;
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}
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static char* write_pts(char* p, u_int8_t fb, int64_t pts)
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{
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int32_t val;
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val = fb << 4 | (((pts >> 30) & 0x07) << 1) | 1;
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*p++ = val;
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val = (((pts >> 15) & 0x7fff) << 1) | 1;
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*p++ = (val >> 8);
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*p++ = val;
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val = (((pts) & 0x7fff) << 1) | 1;
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*p++ = (val >> 8);
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*p++ = val;
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return p;
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}
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};
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SrsTSMuxer::SrsTSMuxer()
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{
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writer = new SrsFileWriter();
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}
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SrsTSMuxer::~SrsTSMuxer()
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{
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close();
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srs_freep(writer);
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}
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int SrsTSMuxer::open(string _path)
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{
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int ret = ERROR_SUCCESS;
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path = _path;
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close();
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if ((ret = writer->open(path)) != ERROR_SUCCESS) {
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return ret;
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}
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// write mpegts header
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if ((ret = SrsMpegtsWriter::write_header(writer)) != ERROR_SUCCESS) {
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return ret;
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}
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return ret;
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}
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int SrsTSMuxer::write_audio(SrsMpegtsFrame* af, SrsSimpleBuffer* ab)
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{
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int ret = ERROR_SUCCESS;
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if ((ret = SrsMpegtsWriter::write_frame(writer, af, ab)) != ERROR_SUCCESS) {
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return ret;
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}
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return ret;
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}
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int SrsTSMuxer::write_video(SrsMpegtsFrame* vf, SrsSimpleBuffer* vb)
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{
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int ret = ERROR_SUCCESS;
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if ((ret = SrsMpegtsWriter::write_frame(writer, vf, vb)) != ERROR_SUCCESS) {
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return ret;
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}
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return ret;
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}
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void SrsTSMuxer::close()
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{
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writer->close();
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}
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SrsHlsSegment::SrsHlsSegment()
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{
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duration = 0;
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sequence_no = 0;
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muxer = new SrsTSMuxer();
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segment_start_dts = 0;
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is_sequence_header = false;
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writer = new SrsFileWriter();
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muxer = new SrsTSMuxer(writer);
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}
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SrsHlsSegment::~SrsHlsSegment()
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{
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srs_freep(muxer);
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srs_freep(writer);
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}
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void SrsHlsSegment::update_duration(int64_t current_frame_dts)
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@ -926,6 +580,7 @@ int SrsHlsCache::write_audio(SrsAvcAacCodec* codec, SrsHlsMuxer* muxer, int64_t
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return ret;
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}
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}
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// TODO: config it.
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// in ms, audio delay to flush the audios.
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int64_t audio_delay = SRS_CONF_DEFAULT_AAC_DELAY;
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