35 #include "libavutil/opt.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/intreadwrite.h"
97 if (whence != SEEK_SET)
118 if (offset >= frag->
start_pos && offset < frag->start_pos + frag->
size) {
157 for (i = 0; i <
size; i++)
191 int removed = 0, i,
start = 0;
202 if (!
final || removed)
213 char filename[1024], temp_filename[1024];
214 int ret, i, video_chunks = 0, audio_chunks = 0, video_streams = 0, audio_streams = 0;
218 snprintf(temp_filename,
sizeof(temp_filename),
"%s/Manifest.tmp", s->
filename);
224 avio_printf(out,
"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
241 video_chunks = audio_chunks = 0;
247 avio_printf(out,
"<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" Duration=\"%"PRIu64
"\"", duration);
252 int last = -1,
index = 0;
253 avio_printf(out,
"<StreamIndex Type=\"video\" QualityLevels=\"%d\" Chunks=\"%d\" Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n", video_streams, video_chunks);
266 int last = -1,
index = 0;
267 avio_printf(out,
"<StreamIndex Type=\"audio\" QualityLevels=\"%d\" Chunks=\"%d\" Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n", audio_streams, audio_chunks);
282 rename(temp_filename, filename);
323 if (mkdir(os->
dirname, 0777) < 0) {
413 if (*moof_size < 8 || *moof_size > size)
418 if (len > *moof_size)
430 if (len < 8 || len >= *moof_size)
432 if (tag ==
MKTAG(
'u',
'u',
'i',
'd')) {
433 static const uint8_t tfxd[] = {
434 0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
435 0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
439 if (!memcmp(uuid, tfxd, 16) && len >= 8 + 16 + 4 + 16) {
494 int n =
FFMIN(size,
sizeof(buf));
516 char filename[1024], target_filename[1024], header_filename[1024];
518 int64_t start_ts,
duration, moof_size;
540 copy_moof(s, filename, header_filename, moof_size);
541 rename(filename, target_filename);
542 add_fragment(os, target_filename, header_filename, start_ts, duration, start_pos,
size);
553 for (j = 0; j <
remove; j++) {
612 #define OFFSET(x) offsetof(SmoothStreamingContext, x)
613 #define E AV_OPT_FLAG_ENCODING_PARAM
615 {
"window_size",
"number of fragments kept in the manifest",
OFFSET(window_size),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX,
E },
616 {
"extra_window_size",
"number of fragments kept outside of the manifest before removing from disk",
OFFSET(extra_window_size),
AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX,
E },
617 {
"lookahead_count",
"number of lookahead fragments",
OFFSET(lookahead_count),
AV_OPT_TYPE_INT, { .i64 = 2 }, 0, INT_MAX,
E },
618 {
"min_frag_duration",
"minimum fragment duration (in microseconds)",
OFFSET(min_frag_duration),
AV_OPT_TYPE_INT64, { .i64 = 5000000 }, 0, INT_MAX,
E },
619 {
"remove_at_exit",
"remove all fragments when finished",
OFFSET(remove_at_exit),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1,
E },
632 .
name =
"smoothstreaming",
static int write_manifest(AVFormatContext *s, int final)
static int ism_flush(AVFormatContext *s, int final)
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
static int ism_write(void *opaque, uint8_t *buf, int buf_size)
int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
static int ism_write_header(AVFormatContext *s)
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
Write size bytes from buf to the resource accessed by h.
static void output_chunk_list(OutputStream *os, AVIOContext *out, int final, int skip, int window_size)
AVCodecContext * codec
Codec context associated with this stream.
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
static int ism_write_packet(AVFormatContext *s, AVPacket *pkt)
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
static void ism_free(AVFormatContext *s)
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
Copy the settings of the source AVCodecContext into the destination AVCodecContext.
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define AVERROR_MUXER_NOT_FOUND
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
if((e=av_dict_get(options,"", NULL, AV_DICT_IGNORE_SUFFIX)))
static int64_t start_time
const char * av_default_item_name(void *ctx)
Return the context name.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
miscellaneous OS support macros and functions.
static int add_fragment(OutputStream *os, const char *file, const char *infofile, int64_t start_time, int64_t duration, int64_t start_pos, int64_t size)
static const uint8_t offset[511][2]
static av_cold int end(AVCodecContext *avctx)
int ff_avc_write_annexb_extradata(const uint8_t *in, uint8_t **buf, int *size)
int av_reallocp(void *ptr, size_t size)
Allocate or reallocate a block of memory.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
const OptionDef options[]
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void * priv_data
Format private data.
char filename[1024]
input or output filename
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_dict_free(AVDictionary **m)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
static const AVClass ism_class
static int parse_fragment(AVFormatContext *s, const char *filename, int64_t *start_ts, int64_t *duration, int64_t *moof_size, int64_t size)
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
const AVCodecTag ff_mp4_obj_type[]
int flags
A combination of AV_PKT_FLAG values.
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare 2 timestamps each in its own timebases.
unsigned int nb_streams
A list of all streams in the file.
int bit_rate
the average bitrate
int width
picture width / height.
static int write_trailer(AVFormatContext *s1)
const char * stream_type_tag
enum AVMediaType codec_type
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
int sample_rate
samples per second
main external API structure.
static int64_t ism_seek(void *opaque, int64_t offset, int whence)
AVIOContext * pb
I/O context.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Describe the class of an AVClass context structure.
#define MKTAG(a, b, c, d)
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
static int ism_write_trailer(AVFormatContext *s)
AVOutputFormat ff_smoothstreaming_muxer
int ffurl_close(URLContext *h)
static int copy_moof(AVFormatContext *s, const char *infile, const char *outfile, int64_t size)
int64_t ffurl_seek(URLContext *h, int64_t pos, int whence)
Change the position that will be used by the next read/write operation on the resource accessed by h...
int ffurl_open(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
struct AVOutputFormat * oformat
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
int channels
number of audio channels
AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
static void write_header(FFV1Context *f)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
unbuffered private I/O API
static void get_private_data(OutputStream *os)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
This structure stores compressed data.
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
#define AV_NOPTS_VALUE
Undefined timestamp value.
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...