mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
vdpaumpegdec: the B_FRAME decoding was completely wrong, fix it
the buffers don't come in output order so fix the decoder to handle this add new gst_vdp_video_buffer_add_reference method to GstVdpVideoBuffer to be able to keep buffers alive. Ie. a B_FRAME need to have both the forward reference and the backward reference alive during it's lifetime. add mutex to protect for threadsafety issues when we reset the decoder in FLUSH_STOP
This commit is contained in:
Carl-Anton Ingmarsson
Jan Schmidt
parent
b8a7986775
commit
6b05d01898
4 changed files with 113 additions and 118 deletions
|
|
@ -155,40 +155,41 @@ gst_vdp_mpeg_decoder_decode (GstVdpMpegDecoder * mpeg_dec,
|
|||
GstVdpDevice *device;
|
||||
VdpBitstreamBuffer vbit[1];
|
||||
VdpStatus status;
|
||||
GstFlowReturn ret;
|
||||
|
||||
dec = GST_VDP_DECODER (mpeg_dec);
|
||||
|
||||
buffer = gst_adapter_take_buffer (mpeg_dec->adapter,
|
||||
gst_adapter_available (mpeg_dec->adapter));
|
||||
|
||||
/* if the frame is a B_FRAME we store it for future decoding */
|
||||
if (mpeg_dec->vdp_info.picture_coding_type == B_FRAME) {
|
||||
GstVdpBFrame *b_frame;
|
||||
|
||||
if (mpeg_dec->broken_gop) {
|
||||
gst_buffer_unref (buffer);
|
||||
mpeg_dec->broken_gop = FALSE;
|
||||
return GST_FLOW_OK;
|
||||
if (mpeg_dec->vdp_info.picture_coding_type != B_FRAME) {
|
||||
if (mpeg_dec->vdp_info.backward_reference != VDP_INVALID_HANDLE) {
|
||||
GST_BUFFER_TIMESTAMP (mpeg_dec->b_buffer) = timestamp;
|
||||
gst_buffer_ref (mpeg_dec->b_buffer);
|
||||
gst_vdp_decoder_push_video_buffer (dec,
|
||||
GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer));
|
||||
}
|
||||
|
||||
b_frame = g_slice_new (GstVdpBFrame);
|
||||
if (mpeg_dec->vdp_info.forward_reference != VDP_INVALID_HANDLE) {
|
||||
gst_buffer_unref (mpeg_dec->f_buffer);
|
||||
mpeg_dec->vdp_info.forward_reference = VDP_INVALID_HANDLE;
|
||||
}
|
||||
|
||||
GST_BUFFER_TIMESTAMP (buffer) = timestamp;
|
||||
b_frame->buffer = buffer;
|
||||
memcpy (&b_frame->vdp_info, &mpeg_dec->vdp_info,
|
||||
sizeof (VdpPictureInfoMPEG1Or2));
|
||||
mpeg_dec->vdp_info.forward_reference =
|
||||
mpeg_dec->vdp_info.backward_reference;
|
||||
mpeg_dec->f_buffer = mpeg_dec->b_buffer;
|
||||
|
||||
mpeg_dec->b_frames = g_slist_append (mpeg_dec->b_frames, b_frame);
|
||||
|
||||
mpeg_dec->vdp_info.slice_count = 0;
|
||||
|
||||
return GST_FLOW_OK;
|
||||
mpeg_dec->vdp_info.backward_reference = VDP_INVALID_HANDLE;
|
||||
}
|
||||
|
||||
outbuf = gst_vdp_video_buffer_new (dec->device, VDP_CHROMA_TYPE_420,
|
||||
dec->width, dec->height);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
|
||||
if (mpeg_dec->vdp_info.forward_reference != VDP_INVALID_HANDLE)
|
||||
gst_vdp_video_buffer_add_reference (outbuf,
|
||||
GST_VDP_VIDEO_BUFFER (mpeg_dec->f_buffer));
|
||||
if (mpeg_dec->vdp_info.backward_reference != VDP_INVALID_HANDLE)
|
||||
gst_vdp_video_buffer_add_reference (outbuf,
|
||||
GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer));
|
||||
|
||||
surface = outbuf->surface;
|
||||
|
||||
device = dec->device;
|
||||
|
|
@ -213,54 +214,15 @@ gst_vdp_mpeg_decoder_decode (GstVdpMpegDecoder * mpeg_dec,
|
|||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
/* if we have stored away some B_FRAMEs we can now decode them */
|
||||
if (mpeg_dec->b_frames) {
|
||||
GSList *iter;
|
||||
|
||||
for (iter = mpeg_dec->b_frames; iter; iter = g_slist_next (iter)) {
|
||||
GstVdpBFrame *b_frame;
|
||||
GstVdpVideoBuffer *b_outbuf;
|
||||
|
||||
b_frame = (GstVdpBFrame *) iter->data;
|
||||
|
||||
b_outbuf = gst_vdp_video_buffer_new (dec->device, VDP_CHROMA_TYPE_420,
|
||||
dec->width, dec->height);
|
||||
GST_BUFFER_TIMESTAMP (b_outbuf) = GST_BUFFER_TIMESTAMP (b_frame->buffer);
|
||||
|
||||
b_frame->vdp_info.backward_reference = surface;
|
||||
vbit[0].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
|
||||
vbit[0].bitstream = GST_BUFFER_DATA (b_frame->buffer);
|
||||
vbit[0].bitstream_bytes = GST_BUFFER_SIZE (b_frame->buffer);
|
||||
|
||||
status = device->vdp_decoder_render (mpeg_dec->decoder, b_outbuf->surface,
|
||||
(VdpPictureInfo *) & b_frame->vdp_info, 1, vbit);
|
||||
gst_buffer_unref (b_frame->buffer);
|
||||
g_slice_free (GstVdpBFrame, b_frame);
|
||||
|
||||
if (status != VDP_STATUS_OK) {
|
||||
GST_ELEMENT_ERROR (mpeg_dec, RESOURCE, READ,
|
||||
("Could not decode B_FRAME"),
|
||||
("Error returned from vdpau was: %s",
|
||||
device->vdp_get_error_string (status)));
|
||||
}
|
||||
|
||||
gst_vdp_decoder_push_video_buffer (GST_VDP_DECODER (mpeg_dec), b_outbuf);
|
||||
}
|
||||
g_slist_free (mpeg_dec->b_frames);
|
||||
mpeg_dec->b_frames = NULL;
|
||||
if (mpeg_dec->vdp_info.picture_coding_type == B_FRAME) {
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
|
||||
gst_vdp_decoder_push_video_buffer (dec, GST_VDP_VIDEO_BUFFER (outbuf));
|
||||
} else {
|
||||
mpeg_dec->vdp_info.backward_reference = surface;
|
||||
mpeg_dec->b_buffer = GST_BUFFER (outbuf);
|
||||
}
|
||||
|
||||
gst_buffer_ref (GST_BUFFER (outbuf));
|
||||
|
||||
ret = gst_vdp_decoder_push_video_buffer (GST_VDP_DECODER (mpeg_dec), outbuf);
|
||||
|
||||
if (mpeg_dec->vdp_info.forward_reference != VDP_INVALID_HANDLE)
|
||||
gst_buffer_unref (mpeg_dec->f_buffer);
|
||||
|
||||
mpeg_dec->vdp_info.forward_reference = surface;
|
||||
mpeg_dec->f_buffer = GST_BUFFER (outbuf);
|
||||
|
||||
return ret;
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
@ -323,17 +285,20 @@ gst_vdp_mpeg_decoder_parse_picture (GstVdpMpegDecoder * mpeg_dec,
|
|||
if (!mpeg_util_parse_picture_hdr (&pic_hdr, data, end))
|
||||
return FALSE;
|
||||
|
||||
mpeg_dec->vdp_info.picture_coding_type = pic_hdr.pic_type;
|
||||
|
||||
if (pic_hdr.pic_type == I_FRAME) {
|
||||
if (mpeg_dec->vdp_info.forward_reference != VDP_INVALID_HANDLE) {
|
||||
gst_buffer_unref (mpeg_dec->f_buffer);
|
||||
mpeg_dec->vdp_info.forward_reference = VDP_INVALID_HANDLE;
|
||||
}
|
||||
} else if (mpeg_dec->vdp_info.forward_reference == VDP_INVALID_HANDLE) {
|
||||
GST_DEBUG_OBJECT (mpeg_dec, "Drop frame since we've got no I_FRAME yet");
|
||||
if (pic_hdr.pic_type != I_FRAME
|
||||
&& mpeg_dec->vdp_info.backward_reference == VDP_INVALID_HANDLE) {
|
||||
GST_DEBUG_OBJECT (mpeg_dec,
|
||||
"Drop frame since we haven't got an I_FRAME yet");
|
||||
return FALSE;
|
||||
}
|
||||
if (pic_hdr.pic_type == B_FRAME
|
||||
&& mpeg_dec->vdp_info.forward_reference == VDP_INVALID_HANDLE) {
|
||||
GST_DEBUG_OBJECT (mpeg_dec,
|
||||
"Drop frame since we haven't got two non B_FRAMES yet");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
mpeg_dec->vdp_info.picture_coding_type = pic_hdr.pic_type;
|
||||
|
||||
if (mpeg_dec->version == 1) {
|
||||
mpeg_dec->vdp_info.full_pel_forward_vector =
|
||||
|
|
@ -379,19 +344,10 @@ gst_vdp_mpeg_decoder_parse_quant_matrix (GstVdpMpegDecoder * mpeg_dec,
|
|||
static void
|
||||
gst_vdp_mpeg_decoder_reset (GstVdpMpegDecoder * mpeg_dec)
|
||||
{
|
||||
GSList *iter;
|
||||
|
||||
for (iter = mpeg_dec->b_frames; iter; iter = iter->next) {
|
||||
GstVdpBFrame *b_frame = (GstVdpBFrame *) iter->data;
|
||||
|
||||
gst_buffer_unref (b_frame->buffer);
|
||||
g_slice_free (GstVdpBFrame, b_frame);
|
||||
}
|
||||
g_slist_free (mpeg_dec->b_frames);
|
||||
mpeg_dec->b_frames = NULL;
|
||||
|
||||
if (mpeg_dec->vdp_info.forward_reference != VDP_INVALID_HANDLE)
|
||||
gst_buffer_unref (mpeg_dec->f_buffer);
|
||||
if (mpeg_dec->vdp_info.backward_reference != VDP_INVALID_HANDLE)
|
||||
gst_buffer_unref (mpeg_dec->b_buffer);
|
||||
|
||||
gst_vdp_mpeg_decoder_init_info (&mpeg_dec->vdp_info);
|
||||
|
||||
|
|
@ -408,9 +364,12 @@ gst_vdp_mpeg_decoder_chain (GstPad * pad, GstBuffer * buffer)
|
|||
|
||||
mpeg_dec = GST_VDP_MPEG_DECODER (GST_OBJECT_PARENT (pad));
|
||||
|
||||
g_mutex_lock (mpeg_dec->mutex);
|
||||
|
||||
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
|
||||
GST_DEBUG_OBJECT (mpeg_dec, "Received discont buffer");
|
||||
gst_vdp_mpeg_decoder_reset (mpeg_dec);
|
||||
g_mutex_unlock (mpeg_dec->mutex);
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
|
|
@ -444,8 +403,10 @@ gst_vdp_mpeg_decoder_chain (GstPad * pad, GstBuffer * buffer)
|
|||
GST_DEBUG_OBJECT (mpeg_dec, "MPEG_PACKET_PICTURE");
|
||||
|
||||
if (!gst_vdp_mpeg_decoder_parse_picture (mpeg_dec, packet_start,
|
||||
packet_end))
|
||||
packet_end)) {
|
||||
g_mutex_unlock (mpeg_dec->mutex);
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
break;
|
||||
case MPEG_PACKET_SEQUENCE:
|
||||
GST_DEBUG_OBJECT (mpeg_dec, "MPEG_PACKET_SEQUENCE");
|
||||
|
|
@ -481,6 +442,8 @@ gst_vdp_mpeg_decoder_chain (GstPad * pad, GstBuffer * buffer)
|
|||
if (mpeg_dec->vdp_info.slice_count > 0)
|
||||
ret = gst_vdp_mpeg_decoder_decode (mpeg_dec, GST_BUFFER_TIMESTAMP (buffer));
|
||||
|
||||
g_mutex_unlock (mpeg_dec->mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -499,7 +462,10 @@ gst_vdp_mpeg_decoder_sink_event (GstPad * pad, GstEvent * event)
|
|||
{
|
||||
GST_DEBUG_OBJECT (mpeg_dec, "flush stop");
|
||||
|
||||
g_mutex_lock (mpeg_dec->mutex);
|
||||
gst_vdp_mpeg_decoder_reset (mpeg_dec);
|
||||
g_mutex_unlock (mpeg_dec->mutex);
|
||||
|
||||
res = gst_pad_push_event (dec->src, event);
|
||||
|
||||
break;
|
||||
|
|
@ -607,7 +573,7 @@ gst_vdp_mpeg_decoder_init (GstVdpMpegDecoder * mpeg_dec,
|
|||
mpeg_dec->decoder = VDP_INVALID_HANDLE;
|
||||
gst_vdp_mpeg_decoder_init_info (&mpeg_dec->vdp_info);
|
||||
|
||||
mpeg_dec->b_frames = NULL;
|
||||
mpeg_dec->mutex = g_mutex_new ();
|
||||
|
||||
mpeg_dec->broken_gop = FALSE;
|
||||
|
||||
|
|
@ -622,6 +588,7 @@ gst_vdp_mpeg_decoder_finalize (GObject * object)
|
|||
{
|
||||
GstVdpMpegDecoder *mpeg_dec = (GstVdpMpegDecoder *) object;
|
||||
|
||||
g_mutex_free (mpeg_dec->mutex);
|
||||
g_object_unref (mpeg_dec->adapter);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -46,10 +46,10 @@ struct _GstVdpMpegDecoder
|
|||
VdpDecoder decoder;
|
||||
VdpPictureInfoMPEG1Or2 vdp_info;
|
||||
GstBuffer *f_buffer;
|
||||
GstBuffer *b_buffer;
|
||||
|
||||
/* holds B_FRAMES */
|
||||
GSList *b_frames;
|
||||
|
||||
GMutex *mutex;
|
||||
|
||||
gboolean broken_gop;
|
||||
|
||||
GstAdapter *adapter;
|
||||
|
|
|
|||
|
|
@ -24,14 +24,54 @@
|
|||
|
||||
#include "gstvdpvideobuffer.h"
|
||||
|
||||
|
||||
void
|
||||
gst_vdp_video_buffer_add_reference (GstVdpVideoBuffer * buffer,
|
||||
GstVdpVideoBuffer * buf)
|
||||
{
|
||||
g_assert (GST_IS_VDPAU_VIDEO_BUFFER (buffer));
|
||||
g_assert (GST_IS_VDPAU_VIDEO_BUFFER (buf));
|
||||
|
||||
gst_buffer_ref (GST_BUFFER (buf));
|
||||
buffer->refs = g_slist_prepend (buffer->refs, buf);
|
||||
}
|
||||
|
||||
GstVdpVideoBuffer *
|
||||
gst_vdp_video_buffer_new (GstVdpDevice * device, VdpChromaType chroma_type,
|
||||
gint width, gint height)
|
||||
{
|
||||
GstVdpVideoBuffer *buffer;
|
||||
VdpStatus status;
|
||||
VdpVideoSurface surface;
|
||||
|
||||
status = device->vdp_video_surface_create (device->device, chroma_type, width,
|
||||
height, &surface);
|
||||
if (status != VDP_STATUS_OK) {
|
||||
GST_ERROR ("Couldn't create a VdpVideoSurface, error returned was: %s",
|
||||
device->vdp_get_error_string (status));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
buffer =
|
||||
(GstVdpVideoBuffer *) gst_mini_object_new (GST_TYPE_VDPAU_VIDEO_BUFFER);
|
||||
|
||||
buffer->device = g_object_ref (device);
|
||||
buffer->surface = surface;
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
static GObjectClass *gst_vdp_video_buffer_parent_class;
|
||||
|
||||
static void
|
||||
gst_vdp_video_buffer_finalize (GstVdpVideoBuffer * buffer)
|
||||
{
|
||||
GstVdpDevice *device = buffer->device;
|
||||
GSList *iter;
|
||||
GstVdpDevice *device;
|
||||
VdpStatus status;
|
||||
|
||||
device = buffer->device;
|
||||
|
||||
status = device->vdp_video_surface_destroy (buffer->surface);
|
||||
if (status != VDP_STATUS_OK)
|
||||
GST_ERROR
|
||||
|
|
@ -40,6 +80,14 @@ gst_vdp_video_buffer_finalize (GstVdpVideoBuffer * buffer)
|
|||
|
||||
g_object_unref (buffer->device);
|
||||
|
||||
for (iter = buffer->refs; iter; iter = g_slist_next (iter)) {
|
||||
GstBuffer *buf;
|
||||
|
||||
buf = (GstBuffer *) (iter->data);
|
||||
gst_buffer_unref (buf);
|
||||
}
|
||||
g_slist_free (buffer->refs);
|
||||
|
||||
GST_MINI_OBJECT_CLASS (gst_vdp_video_buffer_parent_class)->finalize
|
||||
(GST_MINI_OBJECT (buffer));
|
||||
}
|
||||
|
|
@ -49,6 +97,8 @@ gst_vdp_video_buffer_init (GstVdpVideoBuffer * buffer, gpointer g_class)
|
|||
{
|
||||
buffer->device = NULL;
|
||||
buffer->surface = VDP_INVALID_HANDLE;
|
||||
|
||||
buffer->refs = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -86,29 +136,3 @@ gst_vdp_video_buffer_get_type (void)
|
|||
}
|
||||
return _gst_vdp_video_buffer_type;
|
||||
}
|
||||
|
||||
|
||||
GstVdpVideoBuffer *
|
||||
gst_vdp_video_buffer_new (GstVdpDevice * device, VdpChromaType chroma_type,
|
||||
gint width, gint height)
|
||||
{
|
||||
GstVdpVideoBuffer *buffer;
|
||||
VdpStatus status;
|
||||
VdpVideoSurface surface;
|
||||
|
||||
status = device->vdp_video_surface_create (device->device, chroma_type, width,
|
||||
height, &surface);
|
||||
if (status != VDP_STATUS_OK) {
|
||||
GST_ERROR ("Couldn't create a VdpVideoSurface, error returned was: %s",
|
||||
device->vdp_get_error_string (status));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
buffer =
|
||||
(GstVdpVideoBuffer *) gst_mini_object_new (GST_TYPE_VDPAU_VIDEO_BUFFER);
|
||||
|
||||
buffer->device = g_object_ref (device);
|
||||
buffer->surface = surface;
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -40,12 +40,16 @@ struct _GstVdpVideoBuffer {
|
|||
|
||||
GstVdpDevice *device;
|
||||
VdpVideoSurface surface;
|
||||
|
||||
GSList *refs;
|
||||
};
|
||||
|
||||
GType gst_vdp_video_buffer_get_type (void);
|
||||
|
||||
GstVdpVideoBuffer* gst_vdp_video_buffer_new (GstVdpDevice * device, VdpChromaType chroma_type, gint width, gint height);
|
||||
|
||||
void gst_vdp_video_buffer_add_reference (GstVdpVideoBuffer *buffer, GstVdpVideoBuffer *buf);
|
||||
|
||||
#define GST_VDP_VIDEO_CAPS \
|
||||
"video/x-vdpau-video, " \
|
||||
"chroma-type = (int)[0,2], " \
|
||||
|
|
|
|||
Loading…
Reference in a new issue