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audioencoder: Decouple setting of output format and downstream negotiation

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This makes the audio encoder base class more similar to the video
encoder base class.
This commit is contained in:
Sebastian Dröge 2012-08-09 15:20:45 +02:00
parent 513d4f7cd1
commit 9309272309
2 changed files with 77 additions and 42 deletions
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118
gst-libs/gst/audio/gstaudioencoder.c
View file

@ -188,6 +188,8 @@ typedef struct _GstAudioEncoderContext
GstAudioInfo info;
/* output */
GstCaps *caps;
gboolean output_caps_changed;
gint frame_samples_min, frame_samples_max;
gint frame_max;
gint lookahead;
@ -458,6 +460,7 @@ gst_audio_encoder_reset (GstAudioEncoder * enc, gboolean full)
memset (&enc->priv->ctx, 0, sizeof (enc->priv->ctx));
gst_audio_info_init (&enc->priv->ctx.info);
gst_caps_replace (&enc->priv->ctx.caps, NULL);
if (enc->priv->tags)
gst_tag_list_free (enc->priv->tags);
@ -602,7 +605,7 @@ gst_audio_encoder_finish_frame (GstAudioEncoder * enc, GstBuffer * buf,
GST_FLOW_ERROR);
/* subclass should know what it is producing by now */
if (!gst_pad_has_current_caps (enc->srcpad))
if (!ctx->caps)
goto no_caps;
GST_AUDIO_ENCODER_STREAM_LOCK (enc);
@ -611,13 +614,12 @@ gst_audio_encoder_finish_frame (GstAudioEncoder * enc, GstBuffer * buf,
"accepting %" G_GSIZE_FORMAT " bytes encoded data as %d samples",
buf ? gst_buffer_get_size (buf) : -1, samples);
if (G_UNLIKELY (gst_pad_check_reconfigure (enc->srcpad))) {
GstCaps *caps = gst_pad_get_current_caps (enc->srcpad);
if (!gst_audio_encoder_set_output_format (enc, caps)) {
if (G_UNLIKELY (ctx->output_caps_changed
|| gst_pad_check_reconfigure (enc->srcpad))) {
if (!gst_audio_encoder_negotiate (enc)) {
ret = GST_FLOW_NOT_NEGOTIATED;
goto exit;
}
gst_caps_unref (caps);
}
/* mark subclass still alive and providing */
@ -2508,44 +2510,39 @@ gst_audio_encoder_merge_tags (GstAudioEncoder * enc,
GST_OBJECT_UNLOCK (enc);
}
/*
* gst_audio_encoder_set_output_format:
* @enc: a #GstAudioEncoder
* @caps: #GstCaps
/**
* gst_audio_encoder_negotiate:
* @dec: a #GstAudioEncoder
*
* Configure output caps on the srcpad of @enc.
* Negotiate with downstreame elements to currently configured #GstCaps.
*
* Returns: %TRUE on success.
**/
* Returns: #TRUE if the negotiation succeeded, else #FALSE.
*/
gboolean
gst_audio_encoder_set_output_format (GstAudioEncoder * enc, GstCaps * caps)
gst_audio_encoder_negotiate (GstAudioEncoder * enc)
{
GstAudioEncoderClass *klass = GST_AUDIO_ENCODER_GET_CLASS (enc);
GstAudioEncoderClass *klass;
gboolean res = FALSE;
GstCaps *templ_caps;
GstQuery *query = NULL;
GstAllocator *allocator;
GstAllocationParams params;
GstCaps *caps;
g_return_val_if_fail (GST_IS_AUDIO_ENCODER (enc), FALSE);
g_return_val_if_fail (GST_IS_CAPS (enc->priv->ctx.caps), FALSE);
klass = GST_AUDIO_ENCODER_GET_CLASS (enc);
GST_AUDIO_ENCODER_STREAM_LOCK (enc);
caps = enc->priv->ctx.caps;
GST_DEBUG_OBJECT (enc, "Setting srcpad caps %" GST_PTR_FORMAT, caps);
if (!gst_caps_is_fixed (caps))
goto refuse_caps;
/* Only allow caps that are a subset of the template caps */
templ_caps = gst_pad_get_pad_template_caps (enc->srcpad);
if (!gst_caps_is_subset (caps, templ_caps)) {
gst_caps_unref (templ_caps);
goto refuse_caps;
}
gst_caps_unref (templ_caps);
res = gst_pad_set_caps (enc->srcpad, caps);
if (!res)
goto done;
/* clear reconfigure so we don't set caps twice */
gst_pad_check_reconfigure (enc->srcpad);
enc->priv->ctx.output_caps_changed = FALSE;
query = gst_query_new_allocation (caps, TRUE);
if (!gst_pad_peer_query (enc->srcpad, query)) {
@ -2579,6 +2576,53 @@ done:
if (query)
gst_query_unref (query);
GST_AUDIO_ENCODER_STREAM_UNLOCK (enc);
return res;
/* ERRORS */
no_decide_allocation:
{
GST_WARNING_OBJECT (enc, "Subclass failed to decide allocation");
goto done;
}
}
/*
* gst_audio_encoder_set_output_format:
* @enc: a #GstAudioEncoder
* @caps: #GstCaps
*
* Configure output caps on the srcpad of @enc.
*
* Returns: %TRUE on success.
**/
gboolean
gst_audio_encoder_set_output_format (GstAudioEncoder * enc, GstCaps * caps)
{
gboolean res = FALSE;
GstCaps *templ_caps;
GST_DEBUG_OBJECT (enc, "Setting srcpad caps %" GST_PTR_FORMAT, caps);
GST_AUDIO_ENCODER_STREAM_LOCK (enc);
if (!gst_caps_is_fixed (caps))
goto refuse_caps;
/* Only allow caps that are a subset of the template caps */
templ_caps = gst_pad_get_pad_template_caps (enc->srcpad);
if (!gst_caps_is_subset (caps, templ_caps)) {
gst_caps_unref (templ_caps);
goto refuse_caps;
}
gst_caps_unref (templ_caps);
gst_caps_replace (&enc->priv->ctx.caps, caps);
enc->priv->ctx.output_caps_changed = TRUE;
done:
GST_AUDIO_ENCODER_STREAM_UNLOCK (enc);
return res;
/* ERRORS */
@ -2588,12 +2632,6 @@ refuse_caps:
res = FALSE;
goto done;
}
/* Errors */
no_decide_allocation:
{
GST_WARNING_OBJECT (enc, "Subclass failed to decide allocation");
goto done;
}
}
/**
@ -2617,14 +2655,10 @@ gst_audio_encoder_allocate_output_buffer (GstAudioEncoder * enc, gsize size)
GST_AUDIO_ENCODER_STREAM_LOCK (enc);
if (G_UNLIKELY (gst_pad_has_current_caps (enc->srcpad)
&& gst_pad_check_reconfigure (enc->srcpad))) {
GstCaps *caps = gst_pad_get_current_caps (enc->srcpad);
if (!gst_audio_encoder_set_output_format (enc, caps)) {
gst_caps_unref (caps);
if (G_UNLIKELY (enc->priv->ctx.output_caps_changed || (enc->priv->ctx.caps
&& gst_pad_check_reconfigure (enc->srcpad)))) {
if (!gst_audio_encoder_negotiate (enc))
goto done;
}
gst_caps_unref (caps);
}
buffer =

1
gst-libs/gst/audio/gstaudioencoder.h
View file

@ -222,6 +222,7 @@ GstCaps * gst_audio_encoder_proxy_getcaps (GstAudioEncoder * enc,
gboolean gst_audio_encoder_set_output_format (GstAudioEncoder * enc,
GstCaps * caps);
gboolean gst_audio_encoder_negotiate (GstAudioEncoder * enc);
GstBuffer * gst_audio_encoder_allocate_output_buffer (GstAudioEncoder * encoder,
gsize size);