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frejoelfrejoel
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Stripped out HLS parsing from a separate library and cleaned it up so that it's an independant library
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‎LICENSE

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MIT License
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Copyright (c) 2015 Joel Freeman
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎Makefile

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CC = gcc
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ODIR = bin
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CCDIR = coverage
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ONAME = libhlsparse
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INSTALL_DIR = /usr/local
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CCOBJDIR = $(CCDIR)/obj
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CFLAGS = -Ibin -Lbin
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LIBS = -lhlsparse
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.SECONDEXPANSION:
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OBJ_SRC := $(patsubst %.c, %.o, $(wildcard src/*.c))
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DEBUG ?= 0
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COVERAGE ?= 0
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PROFILING ?= 0
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ifeq ($(COVERAGE), 1)
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CFLAGS += -fprofile-arcs -ftest-coverage -fprofile-dir=$(CCOBJDIR)
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DEBUG = 1
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endif
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ifeq ($(PROFILING), 1)
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CFLAGS += -pg
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DEBUG = 1
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endif
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ifeq ($(DEBUG), 1)
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CFLAGS += -O0 -g
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else
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CFLAGS += -O2
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endif
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all: static tests
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.PHONY: style static tests check clean
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static: $(OBJ_SRC)
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mkdir -p $(ODIR)
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ar rcs $(ODIR)/$(ONAME).a $(OBJ_SRC)
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cp src/hlsparse*.h $(ODIR)/
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%.o: %.c
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$(CC) -c -o $@ $< $(CFLAGS)
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install: static
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mkdir -p $(INSTALL_DIR)/include/$(ONAME)
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mkdir -p $(INSTALL_DIR)/lib
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cp $(ODIR)/*.h $(INSTALL_DIR)/include/$(ONAME)/
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cp $(ODIR)/$(ONAME).a $(INSTALL_DIR)/lib/
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remove:
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rm -f $(INSTALL_DIR)/include/$(ONAME)/*.h
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rm -r -f $(INSTALL_DIR)/include/$(ONAME)
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rm -f $(INSTALL_DIR)/lib/$(ONAME).a
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tests: static
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$(MAKE) -C test/
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examples: static
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$(MAKE) -C examples/
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check: static
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$(MAKE) -C test/ check
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clean:
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$(MAKE) -C test clean
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rm -f -r $(ODIR) $(CCDIR)
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find . -type f -name '*.o' -exec rm {} \;
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find . -type f -name '*.o.dSYM' -exec rm {} \;
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find . -type f -name '*.o.gcno' -exec rm {} \;
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find . -type f -name '*.o.gcda' -exec rm {} \;
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find . -type f -name 'gmon.out' -exec rm {} \;

‎README.md

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# HLS Parse
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Library for parsing an HLS master and media playlist into a C object structure.
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## Building
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Run `make static` to build a static library. See the generated `bin` directory.
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Run `make check` to build and run the tests.
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## Example
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For a more thorough example see `examples/example.c` in the source code.
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```
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// Global initialization of the library.
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HLSCode res = hlsparse_global_init();
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// create a master playlist structure.
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master_t myMaster;
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res = hlsparse_master_init(&myMaster);
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// parse some playlist data into our master structure.
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masterSrc = /* char * utf8 master playlist string */
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int read = hlsparse_master(masterSrc, strlen(masterSrc), &myMaster);
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```

‎examples/Makefile

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CC = gcc
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CCDIR = coverage
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CCOBJDIR = $(CCDIR)/obj
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CFLAGS = -I../bin -L../bin
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LIBS = -lhlsparse
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.SECONDEXPANSION:
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OBJ_SRC := $(patsubst %.c, %.o, $(wildcard *.c))
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DEBUG ?= 0
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COVERAGE ?= 0
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PROFILING ?= 0
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ifeq ($(COVERAGE), 1)
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CFLAGS += -fprofile-arcs -ftest-coverage -fprofile-dir=$(CCOBJDIR)
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DEBUG = 1
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endif
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ifeq ($(PROFILING), 1)
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CFLAGS += -pg
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DEBUG = 1
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endif
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ifeq ($(DEBUG), 1)
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CFLAGS += -O0 -g
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else
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CFLAGS += -O2
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endif
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all: $(OBJ_SRC)
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.PHONY: clean
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%.o: %.c
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$(CC) -o $@ $< $(CFLAGS) $(LIBS)
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clean:
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find . -type f -name '*.o' -exec rm {} \;
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find . -type f -name '*.o.dSYM' -exec rm {} \;
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find . -type f -name '*.o.gcno' -exec rm {} \;
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find . -type f -name '*.o.gcda' -exec rm {} \;
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find . -type f -name 'gmon.out' -exec rm {} \;

‎examples/example.c

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#include <hlsparse.h>
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#include <stdio.h>
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#include <string.h>
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const char *masterSrc = "#EXTM3U\n"\
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"#EXT-X-VERSION:7\n"\
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"#EXT-X-MEDIA:TYPE=VIDEO,URI=\"http://www.test.com\",GROUP-ID=\"groupId\",NAME=\"media\"\n"\
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"#EXT-X-STREAM-INF:BANDWIDTH=900000,CODECS=\"mp4a.40.2,avc1.4d401e\",RESOLUTION=1280x720\n"\
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"/path/to/stream_inf/900.m3u8\n"\
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"#EXT-X-STREAM-INF:BANDWIDTH=1500000,CODECS=\"mp4a.40.2.avc1.4d401e\",RESOLUTION=1920x1080\n"\
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"/path/to/stream_inf/1500.m3u8\n"\
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"#EXT-X-I-FRAME-STREAM-INF:URI=\"http://www.test.com\",BANDWIDTH=900000\n"\
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"#EXT-X-SESSION-DATA:DATA-ID=\"com.example.movie.title\",VALUE=\"value\",URI=\"http://www.test.com/data.json\""\
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"#EXT-X-SESSION-KEY:METHOD=AES-128,URI=\"http://www.test.com/key\""\
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"#EXT-X-INDEPENDENT-SEGMENTS\n"\
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"#EXT-X-START:TIME-OFFSET=10.0,PRECISE=YES\n";
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int main() {
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// Initialize the library
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HLSCode res = hlsparse_global_init();
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if(res != HLS_OK) {
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fprintf(stderr, "failed to initialize hlsparse");
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return -1;
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}
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// create a master playlist structure
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master_t myMaster;
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res = hlsparse_master_init(&myMaster);
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if(res != HLS_OK) {
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fprintf(stderr, "failed to initialize master playlist structure");
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return -1;
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}
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// parse the playlist information into our master structure
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int read = hlsparse_master(masterSrc, strlen(masterSrc), &myMaster);
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printf("read a total of %d bytes parsing the master playlist source\n", read);
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// print out all the StreamInf bitrates that were found
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stream_inf_list_t *streamInf = &myMaster.stream_infs;
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int count = 0;
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while(streamInf) {
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printf("StreamInf %d Bandwidth: %f\n", count, streamInf->data->bandwidth);
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++count;
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streamInf = streamInf->next;
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}
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return 0;
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}

‎src/hlsparse.c

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#include "parse.h"
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#include <memory.h>
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hlsparse_malloc_callback hls_malloc = (hlsparse_malloc_callback) malloc;
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hlsparse_free_callback hls_free = (hlsparse_free_callback) free;
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HLSCode hlsparse_global_init(void)
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{
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hls_malloc = (hlsparse_malloc_callback) malloc;
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hls_free = (hlsparse_free_callback) free;
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return HLS_OK;
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}
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HLSCode hlsparse_init_mem(hlsparse_malloc_callback m, hlsparse_free_callback f)
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{
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if(!m || !f) {
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return HLS_ERROR;
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}
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hls_malloc = m;
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hls_free = f;
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return HLS_OK;
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}
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HLSCode hlsparse_master_init(master_t *dest)
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{
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if(!dest) {
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return HLS_ERROR;
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}
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memset(dest, 0, sizeof(master_t));
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return HLS_OK;
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}
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HLSCode hlsparse_media_playlist_init(media_playlist_t *dest)
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{
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if(!dest) {
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return HLS_ERROR;
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}
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memset(dest, 0, sizeof(media_playlist_t));
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return HLS_OK;
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}
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HLSCode hlsparse_master_term(master_t *dest)
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{
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if(!dest) {
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return HLS_ERROR;
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}
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char **params[] = {
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&dest->uri
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};
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parse_param_term(params, 1);
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parse_string_list_term(&dest->custom_tags);
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parse_session_data_list_term(&dest->session_data);
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parse_media_list_term(&dest->media);
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parse_stream_inf_list_term(&dest->stream_infs);
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parse_iframe_stream_inf_list_term(&dest->iframe_stream_infs);
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return HLS_OK;
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}
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HLSCode hlsparse_media_playlist_term(media_playlist_t *dest)
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{
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if(!dest) {
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return HLS_ERROR;
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}
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char **params[] = {
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&dest->uri
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};
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parse_param_term(params, 1);
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parse_string_list_term(&dest->custom_tags);
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parse_segment_list_term(&dest->segments);
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return HLS_OK;
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}
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int hlsparse_master(const char *src, size_t size, master_t *dest)
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{
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int res = 0;
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// make sure we have some data
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if (src && *src != '\0' && src < &src[size]) {
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// go through each line parsing the tags
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const char *pt = src;
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while (*pt != '\0') {
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if (*pt == '#') {
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++pt;
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pt += parse_master_tag(pt, size - (pt - src), dest);
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} else {
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++pt;
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}
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}
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res = pt - src;
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}
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return res;
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}
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int hlsparse_media_playlist(const char *src, size_t size, media_playlist_t *dest)
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{
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int res = 0;
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if(dest) {
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// reset the duration
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dest->duration = 0;
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// reset the segment byte range
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dest->next_segment_byterange.n = dest->next_segment_byterange.o = 0;
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}
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// make sure we have some data
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if(src && (src[0] != '\0') && size > 0) {
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// go through each line parsing the tags
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const char* pt = &src[0];
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while(*pt != '\0' && pt < &src[size]) {
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if(*pt == '#') {
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++pt;
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pt += parse_media_playlist_tag(pt, size - (pt - src), dest);
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} else {
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++pt;
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}
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}
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res = pt - src;
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}
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return res;
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}

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