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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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audiodecoder: Decouple setting of output format and downstream negotiation
This makes the audio decoder base class more similar to the video decoder base class.
This commit is contained in:
Sebastian Dröge
parent
e37bb460bd
commit
e1702d62a0
2 changed files with 93 additions and 49 deletions
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@ -184,6 +184,7 @@ typedef struct _GstAudioDecoderContext
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/* input */
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/* (output) audio format */
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GstAudioInfo info;
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gboolean output_format_changed;
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/* parsing state */
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gboolean eos;
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@ -524,64 +525,38 @@ gst_audio_decoder_finalize (GObject * object)
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}
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/**
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* gst_audio_decoder_set_output_format:
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* gst_audio_decoder_negotiate:
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* @dec: a #GstAudioDecoder
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* @info: #GstAudioInfo
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*
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* Configure output info on the srcpad of @dec.
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* Negotiate with downstreame elements to currently configured #GstAudioInfo.
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*
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* Returns: %TRUE on success.
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**/
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* Returns: #TRUE if the negotiation succeeded, else #FALSE.
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*/
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gboolean
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gst_audio_decoder_set_output_format (GstAudioDecoder * dec,
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const GstAudioInfo * info)
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gst_audio_decoder_negotiate (GstAudioDecoder * dec)
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{
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GstAudioDecoderClass *klass = GST_AUDIO_DECODER_GET_CLASS (dec);
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GstAudioDecoderClass *klass;
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gboolean res = TRUE;
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guint old_rate;
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GstCaps *caps = NULL;
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GstCaps *templ_caps;
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GstQuery *query = NULL;
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GstAllocator *allocator;
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GstAllocationParams params;
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GST_DEBUG_OBJECT (dec, "Setting output format");
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g_return_val_if_fail (GST_IS_AUDIO_DECODER (dec), FALSE);
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g_return_val_if_fail (GST_AUDIO_INFO_IS_VALID (&dec->priv->ctx.info), FALSE);
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klass = GST_AUDIO_DECODER_GET_CLASS (dec);
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GST_AUDIO_DECODER_STREAM_LOCK (dec);
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/* If the audio info can't be converted to caps,
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* it was invalid */
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caps = gst_audio_info_to_caps (info);
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if (!caps)
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goto refuse_caps;
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/* Only allow caps that are a subset of the template caps */
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templ_caps = gst_pad_get_pad_template_caps (dec->srcpad);
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if (!gst_caps_is_subset (caps, templ_caps)) {
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GST_WARNING_OBJECT (dec, "Requested output format %" GST_PTR_FORMAT
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" do not match template %" GST_PTR_FORMAT, caps, templ_caps);
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gst_caps_unref (caps);
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gst_caps_unref (templ_caps);
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goto refuse_caps;
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}
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gst_caps_unref (templ_caps);
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/* adjust ts tracking to new sample rate */
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old_rate = GST_AUDIO_INFO_RATE (&dec->priv->ctx.info);
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if (GST_CLOCK_TIME_IS_VALID (dec->priv->base_ts) && old_rate) {
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dec->priv->base_ts +=
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GST_FRAMES_TO_CLOCK_TIME (dec->priv->samples, old_rate);
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dec->priv->samples = 0;
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}
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/* copy the GstAudioInfo */
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dec->priv->ctx.info = *info;
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GST_DEBUG_OBJECT (dec, "setting src caps %" GST_PTR_FORMAT, caps);
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caps = gst_audio_info_to_caps (&dec->priv->ctx.info);
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res = gst_pad_set_caps (dec->srcpad, caps);
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if (!res)
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goto done;
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dec->priv->ctx.output_format_changed = FALSE;
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query = gst_query_new_allocation (caps, TRUE);
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if (!gst_pad_peer_query (dec->srcpad, query)) {
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@ -620,6 +595,75 @@ done:
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return res;
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/* ERRORS */
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no_decide_allocation:
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{
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GST_WARNING_OBJECT (dec, "Subclass failed to decide allocation");
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goto done;
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}
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}
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/**
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* gst_audio_decoder_set_output_format:
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* @dec: a #GstAudioDecoder
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* @info: #GstAudioInfo
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*
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* Configure output info on the srcpad of @dec.
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*
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* Returns: %TRUE on success.
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**/
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gboolean
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gst_audio_decoder_set_output_format (GstAudioDecoder * dec,
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const GstAudioInfo * info)
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{
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gboolean res = TRUE;
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guint old_rate;
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GstCaps *caps = NULL;
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GstCaps *templ_caps;
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g_return_val_if_fail (GST_IS_AUDIO_DECODER (dec), FALSE);
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g_return_val_if_fail (GST_AUDIO_INFO_IS_VALID (info), FALSE);
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GST_DEBUG_OBJECT (dec, "Setting output format");
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GST_AUDIO_DECODER_STREAM_LOCK (dec);
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/* If the audio info can't be converted to caps,
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* it was invalid */
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caps = gst_audio_info_to_caps (info);
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if (!caps)
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goto refuse_caps;
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/* Only allow caps that are a subset of the template caps */
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templ_caps = gst_pad_get_pad_template_caps (dec->srcpad);
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if (!gst_caps_is_subset (caps, templ_caps)) {
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GST_WARNING_OBJECT (dec, "Requested output format %" GST_PTR_FORMAT
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" do not match template %" GST_PTR_FORMAT, caps, templ_caps);
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gst_caps_unref (caps);
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gst_caps_unref (templ_caps);
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goto refuse_caps;
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}
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gst_caps_unref (templ_caps);
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/* adjust ts tracking to new sample rate */
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old_rate = GST_AUDIO_INFO_RATE (&dec->priv->ctx.info);
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if (GST_CLOCK_TIME_IS_VALID (dec->priv->base_ts) && old_rate) {
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dec->priv->base_ts +=
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GST_FRAMES_TO_CLOCK_TIME (dec->priv->samples, old_rate);
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dec->priv->samples = 0;
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}
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/* copy the GstAudioInfo */
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dec->priv->ctx.info = *info;
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dec->priv->ctx.output_format_changed = TRUE;
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done:
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GST_AUDIO_DECODER_STREAM_UNLOCK (dec);
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gst_caps_unref (caps);
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return res;
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/* ERRORS */
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refuse_caps:
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{
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@ -627,11 +671,6 @@ refuse_caps:
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res = FALSE;
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goto done;
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}
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no_decide_allocation:
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{
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GST_WARNING_OBJECT (dec, "Subclass failed to decide allocation");
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goto done;
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}
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}
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static gboolean
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@ -915,8 +954,10 @@ gst_audio_decoder_finish_frame (GstAudioDecoder * dec, GstBuffer * buf,
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GST_AUDIO_DECODER_STREAM_LOCK (dec);
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if (G_UNLIKELY (buf && gst_pad_check_reconfigure (dec->srcpad))) {
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if (!gst_audio_decoder_set_output_format (dec, &ctx->info)) {
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if (buf && G_UNLIKELY (ctx->output_format_changed ||
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(GST_AUDIO_INFO_IS_VALID (&ctx->info)
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&& gst_pad_check_reconfigure (dec->srcpad)))) {
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if (!gst_audio_decoder_negotiate (dec)) {
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto exit;
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}
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@ -2827,9 +2868,10 @@ gst_audio_decoder_allocate_output_buffer (GstAudioDecoder * dec, gsize size)
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GST_AUDIO_DECODER_STREAM_LOCK (dec);
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if (G_UNLIKELY (GST_AUDIO_INFO_IS_VALID (&dec->priv->ctx.info)
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&& gst_pad_check_reconfigure (dec->srcpad))) {
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if (!gst_audio_decoder_set_output_format (dec, &dec->priv->ctx.info))
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if (G_UNLIKELY (dec->priv->ctx.output_format_changed ||
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(GST_AUDIO_INFO_IS_VALID (&dec->priv->ctx.info)
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&& gst_pad_check_reconfigure (dec->srcpad)))) {
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if (!gst_audio_decoder_negotiate (dec))
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goto done;
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}
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@ -273,6 +273,8 @@ GType gst_audio_decoder_get_type (void);
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gboolean gst_audio_decoder_set_output_format (GstAudioDecoder * dec,
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const GstAudioInfo * info);
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gboolean gst_audio_decoder_negotiate (GstAudioDecoder * dec);
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GstFlowReturn gst_audio_decoder_finish_frame (GstAudioDecoder * dec,
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GstBuffer * buf, gint frames);
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