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videodecoder: Change configure_buffer_pool() vfunc to decide_allocation() with same semantics as in basetransform

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This commit is contained in:
Sebastian Dröge 2012-04-25 12:37:39 +02:00
parent 0d50fc03cc
commit 7c165187af
2 changed files with 45 additions and 39 deletions
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68
gst-libs/gst/video/gstvideodecoder.c
View file

@ -283,8 +283,8 @@ static gboolean gst_video_decoder_sink_event_default (GstVideoDecoder * decoder,
GstEvent * event);
static gboolean gst_video_decoder_src_event_default (GstVideoDecoder * decoder,
GstEvent * event);
static gboolean gst_video_decoder_configure_buffer_pool_default (GstVideoDecoder
* decoder, GstQuery * query, GstBufferPool * pool);
static gboolean gst_video_decoder_decide_allocation_default (GstVideoDecoder *
decoder, GstQuery * query);
/* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
* method to get to the padtemplates */
@ -336,8 +336,7 @@ gst_video_decoder_class_init (GstVideoDecoderClass * klass)
klass->sink_event = gst_video_decoder_sink_event_default;
klass->src_event = gst_video_decoder_src_event_default;
klass->configure_buffer_pool =
gst_video_decoder_configure_buffer_pool_default;
klass->decide_allocation = gst_video_decoder_decide_allocation_default;
}
static void
@ -2381,21 +2380,9 @@ gst_video_decoder_get_frame (GstVideoDecoder * decoder, int frame_number)
}
static gboolean
gst_video_decoder_configure_buffer_pool_default (GstVideoDecoder * decoder,
GstQuery * query, GstBufferPool * pool)
gst_video_decoder_decide_allocation_default (GstVideoDecoder * decoder,
GstQuery * query)
{
GstStructure *config;
if (gst_query_has_allocation_meta (query, GST_VIDEO_META_API_TYPE)) {
config = gst_buffer_pool_get_config (pool);
/* just set the option, if the pool can support it we will transparently use
* it through the video info API. We could also see if the pool support this
* option and only activate it then. */
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_set_config (pool, config);
}
return TRUE;
}
@ -2414,11 +2401,13 @@ gst_video_decoder_set_src_caps (GstVideoDecoder * decoder)
{
GstVideoCodecState *state = decoder->priv->output_state;
GstVideoDecoderClass *klass;
GstQuery *query;
GstQuery *query = NULL;
GstBufferPool *pool;
GstStructure *config;
guint size, min, max;
gboolean ret;
GstAllocator *allocator;
GstAllocationParams params;
GstStructure *config;
gboolean ret = TRUE;
g_return_val_if_fail (GST_VIDEO_INFO_WIDTH (&state->info) != 0, FALSE);
g_return_val_if_fail (GST_VIDEO_INFO_HEIGHT (&state->info) != 0, FALSE);
@ -2437,6 +2426,8 @@ gst_video_decoder_set_src_caps (GstVideoDecoder * decoder)
GST_DEBUG_OBJECT (decoder, "setting caps %" GST_PTR_FORMAT, state->caps);
ret = gst_pad_set_caps (decoder->srcpad, state->caps);
if (!ret)
goto done;
decoder->priv->output_state_changed = FALSE;
/* Negotiate pool */
@ -2446,8 +2437,22 @@ gst_video_decoder_set_src_caps (GstVideoDecoder * decoder)
GST_DEBUG_OBJECT (decoder, "didn't get downstream ALLOCATION hints");
}
if (klass->decide_allocation) {
if (!(ret = klass->decide_allocation (decoder, query)))
goto done;
}
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
/* try the allocator */
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
} else {
allocator = NULL;
gst_allocation_params_init (&params);
}
if (gst_query_get_n_allocation_pools (query) > 0) {
/* we got configuration from our peer, parse them */
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
size = MAX (size, state->info.size);
} else {
@ -2457,27 +2462,28 @@ gst_video_decoder_set_src_caps (GstVideoDecoder * decoder)
}
if (pool == NULL) {
/* we did not get a pool, make one ourselves then */
/* no pool, we can make our own */
GST_DEBUG_OBJECT (decoder, "no pool, making new pool");
pool = gst_video_buffer_pool_new ();
}
/* now configure */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_set_config (pool, config);
if (decoder->priv->pool) {
gst_buffer_pool_set_active (decoder->priv->pool, FALSE);
gst_object_unref (decoder->priv->pool);
}
decoder->priv->pool = pool;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
gst_buffer_pool_set_config (pool, config);
if (klass->configure_buffer_pool)
ret = klass->configure_buffer_pool (decoder, query, pool);
/* and activate */
if (ret)
gst_buffer_pool_set_active (pool, TRUE);
done:
if (query)
gst_query_unref (query);
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);

12
gst-libs/gst/video/gstvideodecoder.h
View file

@ -247,11 +247,11 @@ struct _GstVideoDecoder
* Event handler on the source pad. This function should return
* TRUE if the event was handled and should be discarded
* (i.e. not unref'ed).
* @configure_buffer_pool: Optional.
* Configure the buffer that is used for allocation of output
* buffers. The passed query contains the result of the allocation
* query. The default implementation will add the VIDEO_META if
* supported by the buffer pool.
* @decide_allocation: Optional.
* Setup the allocation parameters for allocating output
* buffers. The passed in query contains the result of the
* downstream allocation query.
*
* Subclasses can override any of the available virtual methods or not, as
* needed. At minimum @handle_frame needs to be overridden, and @set_format
* and likely as well. If non-packetized input is supported or expected,
@ -295,7 +295,7 @@ struct _GstVideoDecoderClass
gboolean (*src_event) (GstVideoDecoder *decoder,
GstEvent *event);
gboolean (*configure_buffer_pool) (GstVideoDecoder *decoder, GstQuery *query, GstBufferPool *pool);
gboolean (*decide_allocation) (GstVideoDecoder *decoder, GstQuery *query);
/*< private >*/