Re: [FFmpeg-devel] [PATCH v3 2/2] avformat/rtmpproto: support enhanced rtmp
On Sat, 26 Aug 2023, Steven Liu wrote:
Marton Balint 于2023年8月26日周六 15:52写道：
Hi Marton,
[...]
>
>> +av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
>> +ff_amf_write_string(, fourcc);
>> +} else {
>> +av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc,
%.*s\n", 4, fourcc_data);
>> +return AVERROR_PATCHWELCOME;
As far as I saw the specs does not provide an explicit list of fourcc
that can be used, so we should not limit it either, it makes the code more
future-proof. Therefore I suggest we accept unknown fourccs, but warn the
user about them.
I set unsupported codec fourcc, and return a patchwelcome is because
there just add hevc,av1,vp9 codec supported in flvenc and flvdec,
dose not add the others in the flv right, so if user want use another
codecs, it should give a error and patch welcome.
Ok, but if you only want to support a strict list, then maybe
AV_OPT_TYPE_FLAGS type would be a better option type? Fine with me either
way.
>> +}
>> +
>> +fourcc_data += 5;
>> +}
>> +}
>> +
>> if (!rt->is_input) {
>> ff_amf_write_field_name(, "type");
>> ff_amf_write_string(, "nonprivate");
>> @@ -3104,6 +3140,7 @@ static const AVOption rtmp_options[] = {
>> {"rtmp_conn", "Append arbitrary AMF data to the Connect message",
OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
>> {"rtmp_flashver", "Version of the Flash plugin used to run the SWF
player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
>> {"rtmp_flush_interval", "Number of packets flushed in the same request
(RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, ENC},
>> +{"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced rtmp
live stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, ENC},
Maybe make the default "av01,vp09,hevc"? This is a list of codecs the
I think make it null should better, because not should every body's
ffmpeg has been support hevc/av1/vp9 codec,
And not everybody is using libavcodec for decoding hevc/av1/vp9, so which
decoders are compiled in does not really matter. Do we really want the
default to *not support* any recent codec?
so I set it null default, and the other reason is not sure all rtmp
server has beed support enhanced rtmp, so make it null default
when user not use codec hevc/av1/vp9.
I'd expect that legacy rtmp servers will just ignore "fourCcList"
property as an unknown/unsupported property, but I am not sure what would
actually happen... Maybe some tests should be made with the most common
implementations. If it actually causes issues, then I am fine with
the NULL default.
Regards,
Marton
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Re: [FFmpeg-devel] [PATCH v3 2/2] avformat/rtmpproto: support enhanced rtmp
Marton Balint 于2023年8月26日周六 15:52写道：
Hi Marton,
>
>
>
> On Fri, 25 Aug 2023, Steven Liu wrote:
>
> > Steven Liu 于2023年8月25日周五 18:05写道：
> >>
> >> Add option named rtmp_enhanced_codec,
> >> it would support hvc1,av01,vp09 now,
> >> the fourcc is using Array of strings.
> >>
> >> Signed-off-by: Steven Liu
> >> ---
> >> doc/protocols.texi | 6 ++
> >> libavformat/rtmpproto.c | 37 +
> >> 2 files changed, 43 insertions(+)
> >>
> >> diff --git a/doc/protocols.texi b/doc/protocols.texi
> >> index b3fad55591..bd2b25e502 100644
> >> --- a/doc/protocols.texi
> >> +++ b/doc/protocols.texi
> >> @@ -896,6 +896,12 @@ be named, by prefixing the type with 'N' and
> >> specifying the name before
> >> the value (i.e. @code{NB:myFlag:1}). This option may be used multiple
> >> times to construct arbitrary AMF sequences.
> >>
> >> +@item rtmp_enhanced_codecs
> >> +Specify the list of codecs the client advertises to support in an
> >> +enhanced RTMP stream.
>
> >> This option should set a string like @code{hvc1,av01,vp09}
> >> +for multiple codecs, or @code{hvc1} for only one codec,
> >> +set codec fourcc into fourCcLive property into Connect Command Message,
>
> This option should be set to a comma separated list of fourcc values, like
> @code{hvc1,av01,vp09} for multiple codecs or @code{hvc1} for only one
> codec. The specified list will be presented in the "fourCcLive" property
> of the Connect Command Message.
ok
>
>
> >> +
> >> @item rtmp_flashver
> >> Version of the Flash plugin used to run the SWF player. The default
> >> is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
> >> diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
> >> index f0ef223f05..10e0aed539 100644
> >> --- a/libavformat/rtmpproto.c
> >> +++ b/libavformat/rtmpproto.c
> >> @@ -127,6 +127,7 @@ typedef struct RTMPContext {
> >> int nb_streamid;///< The next stream id to
> >> return on createStream calls
> >> doubleduration; ///< Duration of the stream
> >> in seconds as returned by the server (only valid if non-zero)
> >> int tcp_nodelay;///< Use TCP_NODELAY to
> >> disable Nagle's algorithm if set to 1
> >> +char *enhanced_codecs; ///< codec list in enhanced
> >> rtmp
> >> char username[50];
> >> char password[50];
> >> char auth_params[500];
> >> @@ -336,6 +337,41 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
> >> ff_amf_write_field_name(, "app");
> >> ff_amf_write_string2(, rt->app, rt->auth_params);
> >>
> >> +if (rt->enhanced_codecs) {
> >> +uint32_t list_len = 0;
> >> +char *fourcc_data = rt->enhanced_codecs;
> >> +int fourcc_str_len = strlen(fourcc_data);
> >> +
> >> +// check the string, fourcc + ',' + ... + end fourcc correct
> >> length should be (4+1)*n+4
> >> +if ((fourcc_str_len + 1) % 5 != 0) {
> >> +av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
> >> + "should be of the form hvc1[,av01][,vp09][,...]\n");
> >> +return AVERROR(EINVAL);
> >> +}
> >> +
> >> +list_len = (fourcc_str_len + 1) / 5;
> >> +// write the fourCcList field name
>
> Useless comment
ok
>
> >> +ff_amf_write_field_name(, "fourCcList");
> >> +
> >> +// write the fourcc array length
>
> Useless comment
ok
>
> >> +ff_amf_write_array_start(, list_len);
> >> +
> >> +while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
> >> +unsigned char fourcc[5];
> >> +if (!strncasecmp(fourcc_data, "hvc1", 4) ||
> >> +!strncasecmp(fourcc_data, "av01", 4) ||
> >> +!strncasecmp(fourcc_data, "vp09", 4)) {
> >
> > s/strncasecmp/av_strncasecmp/g fix local.
>
> Why you want this to be case insensitive? The specs only contains the
> lowercase variants as examples. So I'd rather use simply strncmp.
ok
>
> >
> >> +av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
> >> +ff_amf_write_string(, fourcc);
> >> +} else {
> >> +av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc,
> >> %.*s\n", 4, fourcc_data);
> >> +return AVERROR_PATCHWELCOME;
>
> As far as I saw the specs does not provide an explicit list of fourcc
> that can be used, so we should not limit it either, it makes the code more
> future-proof. Therefore I suggest we accept unknown fourccs, but warn the
> user about them.
I set unsupported codec fourcc, and return a patchwelcome is because
there just add hevc,av1,vp9 codec supported in flvenc and flvdec,
dose not add the others in the flv right, so if user want use another
codecs, it should give a error and patch welcome.
>
> >> +}
> >> +
> >> +fourcc_data += 5;
> >> +}
> >> +}
> >> +
>
Re: [FFmpeg-devel] [PATCH v3 2/2] avformat/rtmpproto: support enhanced rtmp
On Fri, 25 Aug 2023, Steven Liu wrote:
Steven Liu 于2023年8月25日周五 18:05写道：
Add option named rtmp_enhanced_codec,
it would support hvc1,av01,vp09 now,
the fourcc is using Array of strings.
Signed-off-by: Steven Liu
---
doc/protocols.texi | 6 ++
libavformat/rtmpproto.c | 37 +
2 files changed, 43 insertions(+)
diff --git a/doc/protocols.texi b/doc/protocols.texi
index b3fad55591..bd2b25e502 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -896,6 +896,12 @@ be named, by prefixing the type with 'N' and specifying
the name before
the value (i.e. @code{NB:myFlag:1}). This option may be used multiple
times to construct arbitrary AMF sequences.
+@item rtmp_enhanced_codecs
+Specify the list of codecs the client advertises to support in an
+enhanced RTMP stream.
This option should set a string like @code{hvc1,av01,vp09}
+for multiple codecs, or @code{hvc1} for only one codec,
+set codec fourcc into fourCcLive property into Connect Command Message,
This option should be set to a comma separated list of fourcc values, like
@code{hvc1,av01,vp09} for multiple codecs or @code{hvc1} for only one
codec. The specified list will be presented in the "fourCcLive" property
of the Connect Command Message.
+
@item rtmp_flashver
Version of the Flash plugin used to run the SWF player. The default
is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index f0ef223f05..10e0aed539 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -127,6 +127,7 @@ typedef struct RTMPContext {
int nb_streamid;///< The next stream id to
return on createStream calls
doubleduration; ///< Duration of the stream in
seconds as returned by the server (only valid if non-zero)
int tcp_nodelay;///< Use TCP_NODELAY to disable
Nagle's algorithm if set to 1
+char *enhanced_codecs; ///< codec list in enhanced rtmp
char username[50];
char password[50];
char auth_params[500];
@@ -336,6 +337,41 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
ff_amf_write_field_name(, "app");
ff_amf_write_string2(, rt->app, rt->auth_params);
+if (rt->enhanced_codecs) {
+uint32_t list_len = 0;
+char *fourcc_data = rt->enhanced_codecs;
+int fourcc_str_len = strlen(fourcc_data);
+
+// check the string, fourcc + ',' + ... + end fourcc correct length
should be (4+1)*n+4
+if ((fourcc_str_len + 1) % 5 != 0) {
+av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
+ "should be of the form hvc1[,av01][,vp09][,...]\n");
+return AVERROR(EINVAL);
+}
+
+list_len = (fourcc_str_len + 1) / 5;
+// write the fourCcList field name
Useless comment
+ff_amf_write_field_name(, "fourCcList");
+
+// write the fourcc array length
Useless comment
+ff_amf_write_array_start(, list_len);
+
+while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
+unsigned char fourcc[5];
+if (!strncasecmp(fourcc_data, "hvc1", 4) ||
+!strncasecmp(fourcc_data, "av01", 4) ||
+!strncasecmp(fourcc_data, "vp09", 4)) {
s/strncasecmp/av_strncasecmp/g fix local.
Why you want this to be case insensitive? The specs only contains the
lowercase variants as examples. So I'd rather use simply strncmp.
+av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
+ff_amf_write_string(, fourcc);
+} else {
+av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc,
%.*s\n", 4, fourcc_data);
+return AVERROR_PATCHWELCOME;
As far as I saw the specs does not provide an explicit list of fourcc
that can be used, so we should not limit it either, it makes the code more
future-proof. Therefore I suggest we accept unknown fourccs, but warn the
user about them.
+}
+
+fourcc_data += 5;
+}
+}
+
if (!rt->is_input) {
ff_amf_write_field_name(, "type");
ff_amf_write_string(, "nonprivate");
@@ -3104,6 +3140,7 @@ static const AVOption rtmp_options[] = {
{"rtmp_conn", "Append arbitrary AMF data to the Connect message",
OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
{"rtmp_flashver", "Version of the Flash plugin used to run the SWF
player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
{"rtmp_flush_interval", "Number of packets flushed in the same request (RTMPT
only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, ENC},
+{"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced rtmp live
stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str
Re: [FFmpeg-devel] [PATCH v3 2/2] avformat/rtmpproto: support enhanced rtmp
Steven Liu 于2023年8月25日周五 18:05写道：
>
> Add option named rtmp_enhanced_codec,
> it would support hvc1,av01,vp09 now,
> the fourcc is using Array of strings.
>
> Signed-off-by: Steven Liu
> ---
> doc/protocols.texi | 6 ++
> libavformat/rtmpproto.c | 37 +
> 2 files changed, 43 insertions(+)
>
> diff --git a/doc/protocols.texi b/doc/protocols.texi
> index b3fad55591..bd2b25e502 100644
> --- a/doc/protocols.texi
> +++ b/doc/protocols.texi
> @@ -896,6 +896,12 @@ be named, by prefixing the type with 'N' and specifying
> the name before
> the value (i.e. @code{NB:myFlag:1}). This option may be used multiple
> times to construct arbitrary AMF sequences.
>
> +@item rtmp_enhanced_codecs
> +Specify the list of codecs the client advertises to support in an
> +enhanced RTMP stream. This option should set a string like
> @code{hvc1,av01,vp09}
> +for multiple codecs, or @code{hvc1} for only one codec,
> +set codec fourcc into fourCcLive property into Connect Command Message,
> +
> @item rtmp_flashver
> Version of the Flash plugin used to run the SWF player. The default
> is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
> diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
> index f0ef223f05..10e0aed539 100644
> --- a/libavformat/rtmpproto.c
> +++ b/libavformat/rtmpproto.c
> @@ -127,6 +127,7 @@ typedef struct RTMPContext {
> int nb_streamid;///< The next stream id to
> return on createStream calls
> doubleduration; ///< Duration of the stream in
> seconds as returned by the server (only valid if non-zero)
> int tcp_nodelay;///< Use TCP_NODELAY to
> disable Nagle's algorithm if set to 1
> +char *enhanced_codecs; ///< codec list in enhanced
> rtmp
> char username[50];
> char password[50];
> char auth_params[500];
> @@ -336,6 +337,41 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
> ff_amf_write_field_name(, "app");
> ff_amf_write_string2(, rt->app, rt->auth_params);
>
> +if (rt->enhanced_codecs) {
> +uint32_t list_len = 0;
> +char *fourcc_data = rt->enhanced_codecs;
> +int fourcc_str_len = strlen(fourcc_data);
> +
> +// check the string, fourcc + ',' + ... + end fourcc correct length
> should be (4+1)*n+4
> +if ((fourcc_str_len + 1) % 5 != 0) {
> +av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
> + "should be of the form hvc1[,av01][,vp09][,...]\n");
> +return AVERROR(EINVAL);
> +}
> +
> +list_len = (fourcc_str_len + 1) / 5;
> +// write the fourCcList field name
> +ff_amf_write_field_name(, "fourCcList");
> +
> +// write the fourcc array length
> +ff_amf_write_array_start(, list_len);
> +
> +while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
> +unsigned char fourcc[5];
> +if (!strncasecmp(fourcc_data, "hvc1", 4) ||
> +!strncasecmp(fourcc_data, "av01", 4) ||
> +!strncasecmp(fourcc_data, "vp09", 4)) {
s/strncasecmp/av_strncasecmp/g fix local.
> +av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
> +ff_amf_write_string(, fourcc);
> +} else {
> +av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc,
> %.*s\n", 4, fourcc_data);
> +return AVERROR_PATCHWELCOME;
> +}
> +
> +fourcc_data += 5;
> +}
> +}
> +
> if (!rt->is_input) {
> ff_amf_write_field_name(, "type");
> ff_amf_write_string(, "nonprivate");
> @@ -3104,6 +3140,7 @@ static const AVOption rtmp_options[] = {
> {"rtmp_conn", "Append arbitrary AMF data to the Connect message",
> OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
> {"rtmp_flashver", "Version of the Flash plugin used to run the SWF
> player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0,
> DEC|ENC},
> {"rtmp_flush_interval", "Number of packets flushed in the same request
> (RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0,
> INT_MAX, ENC},
> +{"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced
> rtmp live stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str = NULL
> }, 0, 0, ENC},
> {"rtmp_live", "Specify that the media is a live stream.", OFFSET(live),
> AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, "rtmp_live"},
> {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC,
> "rtmp_live"},
> {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC,
> "rtmp_live"},
> --
> 2.40.0
>
> ___
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To
[FFmpeg-devel] [PATCH v3 2/2] avformat/rtmpproto: support enhanced rtmp
Add option named rtmp_enhanced_codec,
it would support hvc1,av01,vp09 now,
the fourcc is using Array of strings.
Signed-off-by: Steven Liu
---
doc/protocols.texi | 6 ++
libavformat/rtmpproto.c | 37 +
2 files changed, 43 insertions(+)
diff --git a/doc/protocols.texi b/doc/protocols.texi
index b3fad55591..bd2b25e502 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -896,6 +896,12 @@ be named, by prefixing the type with 'N' and specifying
the name before
the value (i.e. @code{NB:myFlag:1}). This option may be used multiple
times to construct arbitrary AMF sequences.
+@item rtmp_enhanced_codecs
+Specify the list of codecs the client advertises to support in an
+enhanced RTMP stream. This option should set a string like
@code{hvc1,av01,vp09}
+for multiple codecs, or @code{hvc1} for only one codec,
+set codec fourcc into fourCcLive property into Connect Command Message,
+
@item rtmp_flashver
Version of the Flash plugin used to run the SWF player. The default
is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index f0ef223f05..10e0aed539 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -127,6 +127,7 @@ typedef struct RTMPContext {
int nb_streamid;///< The next stream id to
return on createStream calls
doubleduration; ///< Duration of the stream in
seconds as returned by the server (only valid if non-zero)
int tcp_nodelay;///< Use TCP_NODELAY to disable
Nagle's algorithm if set to 1
+char *enhanced_codecs; ///< codec list in enhanced rtmp
char username[50];
char password[50];
char auth_params[500];
@@ -336,6 +337,41 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
ff_amf_write_field_name(, "app");
ff_amf_write_string2(, rt->app, rt->auth_params);
+if (rt->enhanced_codecs) {
+uint32_t list_len = 0;
+char *fourcc_data = rt->enhanced_codecs;
+int fourcc_str_len = strlen(fourcc_data);
+
+// check the string, fourcc + ',' + ... + end fourcc correct length
should be (4+1)*n+4
+if ((fourcc_str_len + 1) % 5 != 0) {
+av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
+ "should be of the form hvc1[,av01][,vp09][,...]\n");
+return AVERROR(EINVAL);
+}
+
+list_len = (fourcc_str_len + 1) / 5;
+// write the fourCcList field name
+ff_amf_write_field_name(, "fourCcList");
+
+// write the fourcc array length
+ff_amf_write_array_start(, list_len);
+
+while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
+unsigned char fourcc[5];
+if (!strncasecmp(fourcc_data, "hvc1", 4) ||
+!strncasecmp(fourcc_data, "av01", 4) ||
+!strncasecmp(fourcc_data, "vp09", 4)) {
+av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
+ff_amf_write_string(, fourcc);
+} else {
+av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc,
%.*s\n", 4, fourcc_data);
+return AVERROR_PATCHWELCOME;
+}
+
+fourcc_data += 5;
+}
+}
+
if (!rt->is_input) {
ff_amf_write_field_name(, "type");
ff_amf_write_string(, "nonprivate");
@@ -3104,6 +3140,7 @@ static const AVOption rtmp_options[] = {
{"rtmp_conn", "Append arbitrary AMF data to the Connect message",
OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
{"rtmp_flashver", "Version of the Flash plugin used to run the SWF
player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
{"rtmp_flush_interval", "Number of packets flushed in the same request
(RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0,
INT_MAX, ENC},
+{"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced rtmp
live stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str = NULL }, 0,
0, ENC},
{"rtmp_live", "Specify that the media is a live stream.", OFFSET(live),
AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, "rtmp_live"},
{"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"},
{"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC,
"rtmp_live"},
--
2.40.0
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