diff mbox series

[FFmpeg-devel] libRIST: allow setting fifo size and fail on overflow.

Message ID 20220111092338.194468-1-gijs@peskens.net
State New
Headers show
Series [FFmpeg-devel] libRIST: allow setting fifo size and fail on overflow. | expand

Checks

Context Check Description
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished
andriy/make_ppc success Make finished
andriy/make_fate_ppc success Make fate finished
andriy/make_aarch64_jetson success Make finished
andriy/make_fate_aarch64_jetson success Make fate finished
andriy/make_armv7_RPi4 success Make finished
andriy/make_fate_armv7_RPi4 success Make fate finished

Commit Message

Gijs Peskens Jan. 11, 2022, 9:23 a.m. UTC 
Introduce fifo_size and overrun_nonfatal params to configure fifo buffer
behavior.

Use newly introduced RIST_DATA_FLAGS_OVERFLOW flag to check for overrun
and error out in that case.
---
 doc/protocols.texi    |  9 +++++++++
 libavformat/librist.c | 40 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 48 insertions(+), 1 deletion(-)

Comments

Zhao Zhili Jan. 11, 2022, 9:43 a.m. UTC | #1 
> On Jan 11, 2022, at 5:23 PM, Gijs Peskens <gijs@peskens.net> wrote:
> 
> Introduce fifo_size and overrun_nonfatal params to configure fifo buffer
> behavior.
> 
> Use newly introduced RIST_DATA_FLAGS_OVERFLOW flag to check for overrun
> and error out in that case.
> ---
> doc/protocols.texi    |  9 +++++++++
> libavformat/librist.c | 40 +++++++++++++++++++++++++++++++++++++++-
> 2 files changed, 48 insertions(+), 1 deletion(-)
> 
> diff --git a/doc/protocols.texi b/doc/protocols.texi
> index d207df0b52..f1acf0cc77 100644
> --- a/doc/protocols.texi
> +++ b/doc/protocols.texi
> @@ -745,6 +745,15 @@ Set internal RIST buffer size in milliseconds for retransmission of data.
> Default value is 0 which means the librist default (1 sec). Maximum value is 30
> seconds.
> 
> +@item fifo_size
> +Size of the librist receiver output fifo in number of packets. This must be a 
> +power of 2.
> +Defaults to 8192 (vs the libRIST default of 1024).
> +
> +@item overrun_nonfatal=@var{1|0}
> +Survive in case of libRIST fifo buffer overrun. Default
> +value is 0.
> +
> @item pkt_size
> Set maximum packet size for sending data. 1316 by default.
> 
> diff --git a/libavformat/librist.c b/libavformat/librist.c
> index 378b635ea7..83bbf9f07a 100644
> --- a/libavformat/librist.c
> +++ b/libavformat/librist.c
> @@ -43,6 +43,9 @@
>     ((patch) + ((minor)* 0x100) + ((major) *0x10000))
> #define FF_LIBRIST_VERSION FF_LIBRIST_MAKE_VERSION(LIBRIST_API_VERSION_MAJOR, LIBRIST_API_VERSION_MINOR, LIBRIST_API_VERSION_PATCH)
> #define FF_LIBRIST_VERSION_41 FF_LIBRIST_MAKE_VERSION(4, 1, 0)
> +#define FF_LIBRIST_VERSION_42 FF_LIBRIST_MAKE_VERSION(4, 2, 0)
> +
> +#define FF_LIBRIST_FIFO_SIZE_DEFAULT (2 << 12)//8192

It’s not easy to read without space before ‘//8192’.
I prefer

#define FF_LIBRIST_FIFO_SIZE_DEFAULT 8192 

> 
> typedef struct RISTContext {
>     const AVClass *class;
> @@ -52,6 +55,8 @@ typedef struct RISTContext {
>     int packet_size;
>     int log_level;
>     int encryption;
> +    int fifo_size;
> +    bool overrun_nonfatal;

Should be ‘int’, please check opt.c.

>     char *secret;
> 
>     struct rist_logging_settings logging_settings;
> @@ -70,6 +75,8 @@ static const AVOption librist_options[] = {
>     { "main",        NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_MAIN},     0, 0, .flags = D|E, "profile" },
>     { "advanced",    NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_ADVANCED}, 0, 0, .flags = D|E, "profile" },
>     { "buffer_size", "set buffer_size in ms", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64=0},                 0, 30000, .flags = D|E },
> +    { "fifo_size", "Set libRIST fifo buffer. Size must be power of 2", OFFSET(fifo_size), AV_OPT_TYPE_INT, {.i64=FF_LIBRIST_FIFO_SIZE_DEFAULT}, 2 << 9, 2 << 15, .flags = D|E },
> +    { "overrun_nonfatal", "survive in case of libRIST receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,    D },
>     { "pkt_size",    "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT,   {.i64=1316},                  1, MAX_PAYLOAD_SIZE,    .flags = D|E },
>     { "log_level",   "set loglevel",    OFFSET(log_level),   AV_OPT_TYPE_INT,   {.i64=RIST_LOG_INFO},        -1, INT_MAX, .flags = D|E },
>     { "secret", "set encryption secret",OFFSET(secret),      AV_OPT_TYPE_STRING,{.str=NULL},                  0, 0,       .flags = D|E },
> @@ -90,7 +97,6 @@ static int risterr2ret(int err)
> static int log_cb(void *arg, enum rist_log_level log_level, const char *msg)
> {
>     int level;
> -

Unrelated changes.

>     switch (log_level) {
>     case RIST_LOG_ERROR:    level = AV_LOG_ERROR;   break;
>     case RIST_LOG_WARN:     level = AV_LOG_WARNING; break;
> @@ -139,6 +145,7 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>         h->max_packet_size = s->packet_size;
>         ret = rist_sender_create(&s->ctx, s->profile, 0, logging_settings);
>     }
> +
>     if (ret < 0)
>         goto err;
> 
> @@ -146,6 +153,7 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>         h->max_packet_size = MAX_PAYLOAD_SIZE;
>         ret = rist_receiver_create(&s->ctx, s->profile, logging_settings);
>     }
> +
>     if (ret < 0)
>         goto err;
> 
> @@ -161,6 +169,20 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>     if (ret < 0)
>         goto err;
> 
> +    //Prior to 4.2.0 there was a bug in libRIST which made this call always fail.
> +#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
> +    if (flags & AVIO_FLAG_READ) {
> +        ret = rist_receiver_set_output_fifo_size(s->ctx, s->fifo_size);
> +        if (ret != 0) {
> +            goto err;
> +        }
> +    }
> +#else 
> +    if (s->fifo_size != FF_LIBRIST_FIFO_SIZE_DEFAULT) {
> +        av_log(h, AV_LOG_ERROR, "libRIST prior to 0.2.7 has a bug which fails setting the fifo buffer size");

Missing newline at the end of log message.

> +    }
> +#endif
> +
>     if (((s->encryption == 128 || s->encryption == 256) && !s->secret) ||
>         ((peer_config->key_size == 128 || peer_config->key_size == 256) && !peer_config->secret[0])) {
>         av_log(h, AV_LOG_ERROR, "secret is mandatory if encryption is enabled\n");
> @@ -223,8 +245,24 @@ static int librist_read(URLContext *h, uint8_t *buf, int size)
>         return AVERROR_EXTERNAL;
>     }
> 
> +#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
> +    if (data_block->flags & RIST_DATA_FLAGS_OVERFLOW == RIST_DATA_FLAGS_OVERFLOW) {
> +        if (!s->overrun_nonfatal) {
> +            av_log(h, AV_LOG_ERROR, "Fifo buffer overrun. "
> +                    "To avoid, increase fifo_size URL option. "
> +                    "To survive in such case, use overrun_nonfatal option\n");
> +            size = AVERROR(EIO);
> +            goto out_free;
> +        } else {
> +            av_log(h, AV_LOG_WARNING, "Fifo buffer buffer overrun. "
> +                    "Surviving due to overrun_nonfatal option\n");

'buffer buffer' ?

> +        }
> +    }
> +#endif
> +
>     size = data_block->payload_len;
>     memcpy(buf, data_block->payload, size);
> +out_free:
> #if FF_LIBRIST_VERSION < FF_LIBRIST_VERSION_41
>     rist_receiver_data_block_free((struct rist_data_block**)&data_block);
> #else
> -- 
> 2.32.0
> 
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> 
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
Gijs Peskens Jan. 11, 2022, 9:45 a.m. UTC | #2 
On 11-01-2022 10:43, "zhilizhao(赵志立)" wrote:
>
>> On Jan 11, 2022, at 5:23 PM, Gijs Peskens <gijs@peskens.net> wrote:
>>
>> Introduce fifo_size and overrun_nonfatal params to configure fifo buffer
>> behavior.
>>
>> Use newly introduced RIST_DATA_FLAGS_OVERFLOW flag to check for overrun
>> and error out in that case.
>> ---
>> doc/protocols.texi    |  9 +++++++++
>> libavformat/librist.c | 40 +++++++++++++++++++++++++++++++++++++++-
>> 2 files changed, 48 insertions(+), 1 deletion(-)
>>
>> diff --git a/doc/protocols.texi b/doc/protocols.texi
>> index d207df0b52..f1acf0cc77 100644
>> --- a/doc/protocols.texi
>> +++ b/doc/protocols.texi
>> @@ -745,6 +745,15 @@ Set internal RIST buffer size in milliseconds for retransmission of data.
>> Default value is 0 which means the librist default (1 sec). Maximum value is 30
>> seconds.
>>
>> +@item fifo_size
>> +Size of the librist receiver output fifo in number of packets. This must be a
>> +power of 2.
>> +Defaults to 8192 (vs the libRIST default of 1024).
>> +
>> +@item overrun_nonfatal=@var{1|0}
>> +Survive in case of libRIST fifo buffer overrun. Default
>> +value is 0.
>> +
>> @item pkt_size
>> Set maximum packet size for sending data. 1316 by default.
>>
>> diff --git a/libavformat/librist.c b/libavformat/librist.c
>> index 378b635ea7..83bbf9f07a 100644
>> --- a/libavformat/librist.c
>> +++ b/libavformat/librist.c
>> @@ -43,6 +43,9 @@
>>      ((patch) + ((minor)* 0x100) + ((major) *0x10000))
>> #define FF_LIBRIST_VERSION FF_LIBRIST_MAKE_VERSION(LIBRIST_API_VERSION_MAJOR, LIBRIST_API_VERSION_MINOR, LIBRIST_API_VERSION_PATCH)
>> #define FF_LIBRIST_VERSION_41 FF_LIBRIST_MAKE_VERSION(4, 1, 0)
>> +#define FF_LIBRIST_VERSION_42 FF_LIBRIST_MAKE_VERSION(4, 2, 0)
>> +
>> +#define FF_LIBRIST_FIFO_SIZE_DEFAULT (2 << 12)//8192
> It’s not easy to read without space before ‘//8192’.
> I prefer
>
> #define FF_LIBRIST_FIFO_SIZE_DEFAULT 8192
>
>> typedef struct RISTContext {
>>      const AVClass *class;
>> @@ -52,6 +55,8 @@ typedef struct RISTContext {
>>      int packet_size;
>>      int log_level;
>>      int encryption;
>> +    int fifo_size;
>> +    bool overrun_nonfatal;
> Should be ‘int’, please check opt.c.
>
>>      char *secret;
>>
>>      struct rist_logging_settings logging_settings;
>> @@ -70,6 +75,8 @@ static const AVOption librist_options[] = {
>>      { "main",        NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_MAIN},     0, 0, .flags = D|E, "profile" },
>>      { "advanced",    NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_ADVANCED}, 0, 0, .flags = D|E, "profile" },
>>      { "buffer_size", "set buffer_size in ms", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64=0},                 0, 30000, .flags = D|E },
>> +    { "fifo_size", "Set libRIST fifo buffer. Size must be power of 2", OFFSET(fifo_size), AV_OPT_TYPE_INT, {.i64=FF_LIBRIST_FIFO_SIZE_DEFAULT}, 2 << 9, 2 << 15, .flags = D|E },
>> +    { "overrun_nonfatal", "survive in case of libRIST receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,    D },
>>      { "pkt_size",    "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT,   {.i64=1316},                  1, MAX_PAYLOAD_SIZE,    .flags = D|E },
>>      { "log_level",   "set loglevel",    OFFSET(log_level),   AV_OPT_TYPE_INT,   {.i64=RIST_LOG_INFO},        -1, INT_MAX, .flags = D|E },
>>      { "secret", "set encryption secret",OFFSET(secret),      AV_OPT_TYPE_STRING,{.str=NULL},                  0, 0,       .flags = D|E },
>> @@ -90,7 +97,6 @@ static int risterr2ret(int err)
>> static int log_cb(void *arg, enum rist_log_level log_level, const char *msg)
>> {
>>      int level;
>> -
> Unrelated changes.
>
>>      switch (log_level) {
>>      case RIST_LOG_ERROR:    level = AV_LOG_ERROR;   break;
>>      case RIST_LOG_WARN:     level = AV_LOG_WARNING; break;
>> @@ -139,6 +145,7 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>>          h->max_packet_size = s->packet_size;
>>          ret = rist_sender_create(&s->ctx, s->profile, 0, logging_settings);
>>      }
>> +
>>      if (ret < 0)
>>          goto err;
>>
>> @@ -146,6 +153,7 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>>          h->max_packet_size = MAX_PAYLOAD_SIZE;
>>          ret = rist_receiver_create(&s->ctx, s->profile, logging_settings);
>>      }
>> +
>>      if (ret < 0)
>>          goto err;
>>
>> @@ -161,6 +169,20 @@ static int librist_open(URLContext *h, const char *uri, int flags)
>>      if (ret < 0)
>>          goto err;
>>
>> +    //Prior to 4.2.0 there was a bug in libRIST which made this call always fail.
>> +#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
>> +    if (flags & AVIO_FLAG_READ) {
>> +        ret = rist_receiver_set_output_fifo_size(s->ctx, s->fifo_size);
>> +        if (ret != 0) {
>> +            goto err;
>> +        }
>> +    }
>> +#else
>> +    if (s->fifo_size != FF_LIBRIST_FIFO_SIZE_DEFAULT) {
>> +        av_log(h, AV_LOG_ERROR, "libRIST prior to 0.2.7 has a bug which fails setting the fifo buffer size");
> Missing newline at the end of log message.
>
>> +    }
>> +#endif
>> +
>>      if (((s->encryption == 128 || s->encryption == 256) && !s->secret) ||
>>          ((peer_config->key_size == 128 || peer_config->key_size == 256) && !peer_config->secret[0])) {
>>          av_log(h, AV_LOG_ERROR, "secret is mandatory if encryption is enabled\n");
>> @@ -223,8 +245,24 @@ static int librist_read(URLContext *h, uint8_t *buf, int size)
>>          return AVERROR_EXTERNAL;
>>      }
>>
>> +#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
>> +    if (data_block->flags & RIST_DATA_FLAGS_OVERFLOW == RIST_DATA_FLAGS_OVERFLOW) {
>> +        if (!s->overrun_nonfatal) {
>> +            av_log(h, AV_LOG_ERROR, "Fifo buffer overrun. "
>> +                    "To avoid, increase fifo_size URL option. "
>> +                    "To survive in such case, use overrun_nonfatal option\n");
>> +            size = AVERROR(EIO);
>> +            goto out_free;
>> +        } else {
>> +            av_log(h, AV_LOG_WARNING, "Fifo buffer buffer overrun. "
>> +                    "Surviving due to overrun_nonfatal option\n");
> 'buffer buffer' ?
>
>> +        }
>> +    }
>> +#endif
>> +
>>      size = data_block->payload_len;
>>      memcpy(buf, data_block->payload, size);
>> +out_free:
>> #if FF_LIBRIST_VERSION < FF_LIBRIST_VERSION_41
>>      rist_receiver_data_block_free((struct rist_data_block**)&data_block);
>> #else
>> -- 
>> 2.32.0
>>
>> _______________________________________________
>> ffmpeg-devel mailing list
>> ffmpeg-devel@ffmpeg.org
>> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>
>> To unsubscribe, visit link above, or email
>> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
Thanks will correct!
diff mbox series

Patch

diff --git a/doc/protocols.texi b/doc/protocols.texi
index d207df0b52..f1acf0cc77 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -745,6 +745,15 @@  Set internal RIST buffer size in milliseconds for retransmission of data.
 Default value is 0 which means the librist default (1 sec). Maximum value is 30
 seconds.
 
+@item fifo_size
+Size of the librist receiver output fifo in number of packets. This must be a 
+power of 2.
+Defaults to 8192 (vs the libRIST default of 1024).
+
+@item overrun_nonfatal=@var{1|0}
+Survive in case of libRIST fifo buffer overrun. Default
+value is 0.
+
 @item pkt_size
 Set maximum packet size for sending data. 1316 by default.
 
diff --git a/libavformat/librist.c b/libavformat/librist.c
index 378b635ea7..83bbf9f07a 100644
--- a/libavformat/librist.c
+++ b/libavformat/librist.c
@@ -43,6 +43,9 @@ 
     ((patch) + ((minor)* 0x100) + ((major) *0x10000))
 #define FF_LIBRIST_VERSION FF_LIBRIST_MAKE_VERSION(LIBRIST_API_VERSION_MAJOR, LIBRIST_API_VERSION_MINOR, LIBRIST_API_VERSION_PATCH)
 #define FF_LIBRIST_VERSION_41 FF_LIBRIST_MAKE_VERSION(4, 1, 0)
+#define FF_LIBRIST_VERSION_42 FF_LIBRIST_MAKE_VERSION(4, 2, 0)
+
+#define FF_LIBRIST_FIFO_SIZE_DEFAULT (2 << 12)//8192
 
 typedef struct RISTContext {
     const AVClass *class;
@@ -52,6 +55,8 @@  typedef struct RISTContext {
     int packet_size;
     int log_level;
     int encryption;
+    int fifo_size;
+    bool overrun_nonfatal;
     char *secret;
 
     struct rist_logging_settings logging_settings;
@@ -70,6 +75,8 @@  static const AVOption librist_options[] = {
     { "main",        NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_MAIN},     0, 0, .flags = D|E, "profile" },
     { "advanced",    NULL,              0,                   AV_OPT_TYPE_CONST, {.i64=RIST_PROFILE_ADVANCED}, 0, 0, .flags = D|E, "profile" },
     { "buffer_size", "set buffer_size in ms", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64=0},                 0, 30000, .flags = D|E },
+    { "fifo_size", "Set libRIST fifo buffer. Size must be power of 2", OFFSET(fifo_size), AV_OPT_TYPE_INT, {.i64=FF_LIBRIST_FIFO_SIZE_DEFAULT}, 2 << 9, 2 << 15, .flags = D|E },
+    { "overrun_nonfatal", "survive in case of libRIST receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,    D },
     { "pkt_size",    "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT,   {.i64=1316},                  1, MAX_PAYLOAD_SIZE,    .flags = D|E },
     { "log_level",   "set loglevel",    OFFSET(log_level),   AV_OPT_TYPE_INT,   {.i64=RIST_LOG_INFO},        -1, INT_MAX, .flags = D|E },
     { "secret", "set encryption secret",OFFSET(secret),      AV_OPT_TYPE_STRING,{.str=NULL},                  0, 0,       .flags = D|E },
@@ -90,7 +97,6 @@  static int risterr2ret(int err)
 static int log_cb(void *arg, enum rist_log_level log_level, const char *msg)
 {
     int level;
-
     switch (log_level) {
     case RIST_LOG_ERROR:    level = AV_LOG_ERROR;   break;
     case RIST_LOG_WARN:     level = AV_LOG_WARNING; break;
@@ -139,6 +145,7 @@  static int librist_open(URLContext *h, const char *uri, int flags)
         h->max_packet_size = s->packet_size;
         ret = rist_sender_create(&s->ctx, s->profile, 0, logging_settings);
     }
+
     if (ret < 0)
         goto err;
 
@@ -146,6 +153,7 @@  static int librist_open(URLContext *h, const char *uri, int flags)
         h->max_packet_size = MAX_PAYLOAD_SIZE;
         ret = rist_receiver_create(&s->ctx, s->profile, logging_settings);
     }
+
     if (ret < 0)
         goto err;
 
@@ -161,6 +169,20 @@  static int librist_open(URLContext *h, const char *uri, int flags)
     if (ret < 0)
         goto err;
 
+    //Prior to 4.2.0 there was a bug in libRIST which made this call always fail.
+#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
+    if (flags & AVIO_FLAG_READ) {
+        ret = rist_receiver_set_output_fifo_size(s->ctx, s->fifo_size);
+        if (ret != 0) {
+            goto err;
+        }
+    }
+#else 
+    if (s->fifo_size != FF_LIBRIST_FIFO_SIZE_DEFAULT) {
+        av_log(h, AV_LOG_ERROR, "libRIST prior to 0.2.7 has a bug which fails setting the fifo buffer size");
+    }
+#endif
+
     if (((s->encryption == 128 || s->encryption == 256) && !s->secret) ||
         ((peer_config->key_size == 128 || peer_config->key_size == 256) && !peer_config->secret[0])) {
         av_log(h, AV_LOG_ERROR, "secret is mandatory if encryption is enabled\n");
@@ -223,8 +245,24 @@  static int librist_read(URLContext *h, uint8_t *buf, int size)
         return AVERROR_EXTERNAL;
     }
 
+#if FF_LIBRIST_VERSION >= FF_LIBRIST_VERSION_42
+    if (data_block->flags & RIST_DATA_FLAGS_OVERFLOW == RIST_DATA_FLAGS_OVERFLOW) {
+        if (!s->overrun_nonfatal) {
+            av_log(h, AV_LOG_ERROR, "Fifo buffer overrun. "
+                    "To avoid, increase fifo_size URL option. "
+                    "To survive in such case, use overrun_nonfatal option\n");
+            size = AVERROR(EIO);
+            goto out_free;
+        } else {
+            av_log(h, AV_LOG_WARNING, "Fifo buffer buffer overrun. "
+                    "Surviving due to overrun_nonfatal option\n");
+        }
+    }
+#endif
+
     size = data_block->payload_len;
     memcpy(buf, data_block->payload, size);
+out_free:
 #if FF_LIBRIST_VERSION < FF_LIBRIST_VERSION_41
     rist_receiver_data_block_free((struct rist_data_block**)&data_block);
 #else