From 152f61e29b030db6bc740db353a60728d6f37314 Mon Sep 17 00:00:00 2001 From: Steven Liu Date: Tue, 7 Apr 2020 17:30:18 +0800 Subject: avformat/hlsenc: add hls_fmp4_init_resend option add option for resend init file after m3u8 refresh everytime. Signed-off-by: Steven Liu --- doc/muxers.texi | 3 +++ libavformat/hlsenc.c | 41 ++++++++++++++++++++++++++++++++++++----- 2 files changed, 39 insertions(+), 5 deletions(-) diff --git a/doc/muxers.texi b/doc/muxers.texi index 4b6ffaaf58..e5b8debcb3 100644 --- a/doc/muxers.texi +++ b/doc/muxers.texi @@ -836,6 +836,9 @@ fmp4 files may be used in HLS version 7 and above. @item hls_fmp4_init_filename @var{filename} Set filename to the fragment files header file, default filename is @file{init.mp4}. +@item hls_fmp4_init_resend @var{filename} +Resend init file after m3u8 file refresh every time, default is @var{0}. + When @code{var_stream_map} is set with two or more variant streams, the @var{filename} pattern must contain the string "%v", this string specifies the position of variant stream index in the generated init file names. diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c index e34833fd89..d75684741f 100644 --- a/libavformat/hlsenc.c +++ b/libavformat/hlsenc.c @@ -119,6 +119,7 @@ typedef struct VariantStream { int packets_written; int init_range_length; uint8_t *temp_buffer; + uint8_t *init_buffer; AVFormatContext *avf; AVFormatContext *vtt_avf; @@ -193,6 +194,7 @@ typedef struct HLSContext { char *segment_filename; char *fmp4_init_filename; int segment_type; + int resend_init_file; ///< resend init file into disk after refresh m3u8 int use_localtime; ///< flag to expand filename with localtime int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename @@ -2249,6 +2251,23 @@ static int hls_write_header(AVFormatContext *s) return ret; } +static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs) +{ + HLSContext *hls = s->priv_data; + AVDictionary *options = NULL; + int ret = 0; + + set_http_options(s, &options, hls); + ret = hlsenc_io_open(s, &vs->out, hls->fmp4_init_filename, &options); + av_dict_free(&options); + if (ret < 0) + return ret; + avio_write(vs->out, vs->init_buffer, vs->init_range_length); + hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename); + + return ret; +} + static int hls_write_packet(AVFormatContext *s, AVPacket *pkt) { HLSContext *hls = s->priv_data; @@ -2261,7 +2280,6 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt) int range_length = 0; const char *proto = NULL; int use_temp_file = 0; - uint8_t *buffer = NULL; VariantStream *vs = NULL; char *old_filename = NULL; @@ -2347,9 +2365,12 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt) avio_flush(oc->pb); if (hls->segment_type == SEGMENT_TYPE_FMP4) { if (!vs->init_range_length) { - range_length = avio_close_dyn_buf(oc->pb, &buffer); - avio_write(vs->out, buffer, range_length); - av_freep(&buffer); + range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer); + if (range_length <= 0) + return AVERROR(EINVAL); + avio_write(vs->out, vs->init_buffer, range_length); + if (!hls->resend_init_file) + av_freep(&vs->init_buffer); vs->init_range_length = range_length; avio_open_dyn_buf(&oc->pb); vs->packets_written = 0; @@ -2461,6 +2482,14 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt) } } + if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) { + ret = hls_init_file_resend(s, vs); + if (ret < 0) { + av_freep(&old_filename); + return ret; + } + } + if (hls->flags & HLS_SINGLE_FILE) { vs->number++; vs->start_pos += vs->size; @@ -2525,7 +2554,8 @@ static void hls_free_variant_streams(struct HLSContext *hls) } avformat_free_context(vs->avf); - + if (hls->resend_init_file) + av_freep(&vs->init_buffer); hls_free_segments(vs->segments); hls_free_segments(vs->old_segments); av_freep(&vs->m3u8_name); @@ -3024,6 +3054,7 @@ static const AVOption options[] = { {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"}, {"fmp4", "make segment file to fragment mp4 files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_FMP4 }, 0, UINT_MAX, E, "segment_type"}, {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E}, + {"hls_fmp4_init_resend", "resend fragment mp4 init file after refresh m3u8 every time", OFFSET(resend_init_file), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"}, {"single_file", "generate a single media file indexed with byte ranges", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SINGLE_FILE }, 0, UINT_MAX, E, "flags"}, {"temp_file", "write segment and playlist to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"}, -- cgit v1.2.3