[vlc-devel] [PATCH 15/42] decoder: split the creation of the vout/decoder device and the display module
Steve Lhomme
robux4 at ycbcr.xyz
Wed Oct 16 16:58:50 CEST 2019
First handle the resources needed by the get_device() call, then the
format_update() which creates the display.
The on_vout_started is only notified when the vout is really started.
Rename vout_thread_added to vout_thread_started.
---
src/input/decoder.c | 100 +++++++++++++++++++++++++++++---------------
1 file changed, 66 insertions(+), 34 deletions(-)
diff --git a/src/input/decoder.c b/src/input/decoder.c
index 1d2b85b9ad0..3c7d1ccb880 100644
--- a/src/input/decoder.c
+++ b/src/input/decoder.c
@@ -124,7 +124,7 @@ struct decoder_owner
vout_thread_t *p_vout;
enum vlc_vout_order vout_order;
vlc_decoder_device *p_dec_dev; // TEMPORARY
- bool vout_thread_added;
+ bool vout_thread_started;
/* -- Theses variables need locking on read *and* write -- */
/* Preroll */
@@ -458,13 +458,19 @@ static void FixDisplayFormat(decoder_t *p_dec, video_format_t *fmt)
video_format_AdjustColorSpace( fmt );
}
-static int CreateDisplay(struct decoder_owner *p_owner, vlc_decoder_device *dec_dev, vout_thread_t *p_vout)
+static int ModuleThread_UpdateVideoFormat( decoder_t *p_dec )
{
+ struct decoder_owner *p_owner = dec_get_owner( p_dec );
+
+ vlc_mutex_lock( &p_owner->lock );
+
+ vout_thread_t *p_vout = p_owner->p_vout;
+ enum vlc_vout_order vout_order = p_owner->vout_order;
+ vlc_mutex_unlock( &p_owner->lock );
+
if (!p_vout)
return -1;
- decoder_t *p_dec = &p_owner->dec;
-
video_format_t fmt;
FixDisplayFormat( p_dec, &fmt );
@@ -489,15 +495,30 @@ static int CreateDisplay(struct decoder_owner *p_owner, vlc_decoder_device *dec_
dpb_size = 2;
break;
}
+ int res;
+ if (p_owner->vout_thread_started)
+ {
+ res = vout_ChangeSource(p_vout, &fmt, dpb_size + p_dec->i_extra_picture_buffers + 1);
+ if (res == 0)
+ // the display/thread is started and can handle the new source format
+ return 0;
+ }
+
vout_configuration_t cfg = {
.vout = p_vout, .clock = p_owner->p_clock, .fmt = &fmt,
.dpb_size = dpb_size + p_dec->i_extra_picture_buffers + 1,
.mouse_event = MouseEvent, .mouse_opaque = p_dec,
};
- return input_resource_StartVout( p_owner->p_resource, dec_dev, &cfg);
+ res = input_resource_StartVout( p_owner->p_resource, p_owner->p_dec_dev, &cfg);
+ if (res == 0)
+ {
+ p_owner->vout_thread_started = true;
+ decoder_Notify(p_owner, on_vout_started, p_vout, vout_order);
+ }
+ return res;
}
-static int CreateVoutIfNeeded(struct decoder_owner *p_owner)
+static int CreateVoutIfNeeded(struct decoder_owner *p_owner, vlc_decoder_device **pp_dec_dev)
{
decoder_t *p_dec = &p_owner->dec;
bool need_vout = false;
@@ -564,25 +585,29 @@ static int CreateVoutIfNeeded(struct decoder_owner *p_owner)
p_owner->p_vout = NULL; // the DecoderThread should not use the old vout anymore
vlc_mutex_unlock( &p_owner->lock );
+ if ( pp_dec_dev ) *pp_dec_dev = NULL;
enum vlc_vout_order order;
vout_configuration_t cfg = {
.vout = p_vout, .clock = p_owner->p_clock, .fmt = &fmt,
.mouse_event = MouseEvent, .mouse_opaque = p_dec
};
- vlc_decoder_device *dec_dev = NULL;
p_vout = input_resource_GetVoutDecoderDevice( p_owner->p_resource,
- &cfg, &order, &dec_dev );
- if (CreateDisplay( p_owner, dec_dev, p_vout ) != 0)
- p_vout = NULL;
- if (p_vout)
- decoder_Notify(p_owner, on_vout_started, p_vout, order);
+ &cfg, &order, pp_dec_dev );
vlc_mutex_lock( &p_owner->lock );
p_owner->p_vout = p_vout;
p_owner->vout_order = order;
- if ( p_owner->p_dec_dev != NULL )
- vlc_decoder_device_Release( p_owner->p_dec_dev );
- p_owner->p_dec_dev = dec_dev;
+ if ( pp_dec_dev )
+ {
+ if ( p_owner->p_dec_dev != NULL )
+ vlc_decoder_device_Release( p_owner->p_dec_dev );
+ if( p_vout == NULL && *pp_dec_dev != NULL )
+ {
+ vlc_decoder_device_Release( *pp_dec_dev );
+ *pp_dec_dev = NULL;
+ }
+ p_owner->p_dec_dev = *pp_dec_dev ? vlc_decoder_device_Hold(*pp_dec_dev) : NULL;
+ }
DecoderUpdateFormatLocked( p_owner );
p_owner->fmt.video.i_chroma = p_dec->fmt_out.i_codec;
@@ -601,13 +626,22 @@ static int CreateVoutIfNeeded(struct decoder_owner *p_owner)
return 1; // new vout was created
}
-static int ModuleThread_UpdateVideoFormat( decoder_t *p_dec )
+static vlc_decoder_device * ModuleThread_GetDecoderDevice( decoder_t *p_dec )
{
struct decoder_owner *p_owner = dec_get_owner( p_dec );
- int created_vout = CreateVoutIfNeeded(p_owner);
- if (created_vout != 0)
- return created_vout == -1 ? -1 : 0; // error or new vout was created
+ vlc_decoder_device *dec_device = NULL;
+ int created_vout = CreateVoutIfNeeded(p_owner, &dec_device);
+ if (created_vout == -1)
+ {
+ if ( dec_device )
+ vlc_decoder_device_Release( dec_device );
+ return NULL; // error
+ }
+ if (created_vout == 1)
+ {
+ return dec_device; // new vout was created with a decoder device
+ }
bool need_format_update = false;
if ( memcmp( &p_dec->fmt_out.video.mastering,
@@ -633,7 +667,7 @@ static int ModuleThread_UpdateVideoFormat( decoder_t *p_dec )
DecoderUpdateFormatLocked( p_owner );
vlc_mutex_unlock( &p_owner->lock );
}
- return 0;
+ return dec_device;
}
static picture_t *ModuleThread_NewVideoBuffer( decoder_t *p_dec )
@@ -679,7 +713,7 @@ static subpicture_t *ModuleThread_NewSpuBuffer( decoder_t *p_dec,
vout_Release(p_owner->p_vout);
p_owner->p_vout = NULL; // the DecoderThread should not use the old vout anymore
- p_owner->vout_thread_added = false;
+ p_owner->vout_thread_started = false;
vlc_mutex_unlock( &p_owner->lock );
}
return NULL;
@@ -700,7 +734,7 @@ static subpicture_t *ModuleThread_NewSpuBuffer( decoder_t *p_dec,
p_owner->i_spu_channel);
vout_Release(p_owner->p_vout);
p_owner->p_vout = NULL; // the DecoderThread should not use the old vout anymore
- p_owner->vout_thread_added = false;
+ p_owner->vout_thread_started = false;
}
enum vlc_vout_order channel_order;
@@ -718,7 +752,7 @@ static subpicture_t *ModuleThread_NewSpuBuffer( decoder_t *p_dec,
}
p_owner->p_vout = p_vout;
- p_owner->vout_thread_added = true;
+ p_owner->vout_thread_started = true;
p_owner->vout_order = channel_order;
vlc_mutex_unlock(&p_owner->lock);
@@ -1753,6 +1787,7 @@ static void *DecoderThread( void *p_data )
static const struct decoder_owner_callbacks dec_video_cbs =
{
.video = {
+ .get_device = ModuleThread_GetDecoderDevice,
.format_update = ModuleThread_UpdateVideoFormat,
.buffer_new = ModuleThread_NewVideoBuffer,
.abort_pictures = DecoderThread_AbortPictures,
@@ -1821,7 +1856,7 @@ static struct decoder_owner * CreateDecoder( vlc_object_t *p_parent,
p_owner->cbs_userdata = cbs_userdata;
p_owner->p_aout = NULL;
p_owner->p_vout = NULL;
- p_owner->vout_thread_added = false;
+ p_owner->vout_thread_started = false;
p_owner->i_spu_channel = VOUT_SPU_CHANNEL_INVALID;
p_owner->i_spu_order = 0;
p_owner->p_sout = p_sout;
@@ -1989,15 +2024,12 @@ static void DeleteDecoder( decoder_t * p_dec )
case VIDEO_ES: {
vout_thread_t *vout = p_owner->p_vout;
- if (vout != NULL)
+ if (vout != NULL && p_owner->vout_thread_started)
{
- if (p_owner->vout_thread_added)
- {
- /* Reset the cancel state that was set before joining the decoder
- * thread */
- vout_Cancel(vout, false);
- p_owner->vout_thread_added = false;
- }
+ /* Reset the cancel state that was set before joining the decoder
+ * thread */
+ vout_Cancel(vout, false);
+ p_owner->vout_thread_started = false;
decoder_Notify(p_owner, on_vout_stopped, vout);
input_resource_PutVout(p_owner->p_resource, vout);
}
@@ -2013,7 +2045,7 @@ static void DeleteDecoder( decoder_t * p_dec )
vout_UnregisterSubpictureChannel( p_owner->p_vout,
p_owner->i_spu_channel );
vout_Release(p_owner->p_vout);
- p_owner->vout_thread_added = false;
+ p_owner->vout_thread_started = false;
}
break;
}
@@ -2179,7 +2211,7 @@ void input_DecoderDelete( decoder_t *p_dec )
*
* This unblocks the thread, allowing the decoder module to join all its
* worker threads (if any) and the decoder thread to terminate. */
- if( p_dec->fmt_in.i_cat == VIDEO_ES && p_owner->p_vout != NULL && p_owner->vout_thread_added )
+ if( p_dec->fmt_in.i_cat == VIDEO_ES && p_owner->p_vout != NULL && p_owner->vout_thread_started )
vout_Cancel( p_owner->p_vout, true );
vlc_mutex_unlock( &p_owner->lock );
--
2.17.1
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