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gstreamer/omx/gstomxvideodec.c
Sebastian Dröge 5fdb490f1a omx: Port to video base classes from -base
2012-10-22 14:20:41 +02:00

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/*
* Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#include "gstomxvideodec.h"
GST_DEBUG_CATEGORY_STATIC (gst_omx_video_dec_debug_category);
#define GST_CAT_DEFAULT gst_omx_video_dec_debug_category
typedef struct _BufferIdentification BufferIdentification;
struct _BufferIdentification
{
guint64 timestamp;
};
static void
buffer_identification_free (BufferIdentification * id)
{
g_slice_free (BufferIdentification, id);
}
/* prototypes */
static void gst_omx_video_dec_finalize (GObject * object);
static GstStateChangeReturn
gst_omx_video_dec_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_omx_video_dec_start (GstVideoDecoder * decoder);
static gboolean gst_omx_video_dec_stop (GstVideoDecoder * decoder);
static gboolean gst_omx_video_dec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state);
static gboolean gst_omx_video_dec_reset (GstVideoDecoder * decoder,
gboolean hard);
static GstFlowReturn gst_omx_video_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static GstFlowReturn gst_omx_video_dec_finish (GstVideoDecoder * decoder);
static GstFlowReturn gst_omx_video_dec_drain (GstOMXVideoDec * self,
gboolean is_eos);
enum
{
PROP_0
};
/* class initialization */
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_omx_video_dec_debug_category, "omxvideodec", 0, \
"debug category for gst-omx video decoder base class");
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstOMXVideoDec, gst_omx_video_dec,
GST_TYPE_VIDEO_DECODER, DEBUG_INIT);
static void
gst_omx_video_dec_class_init (GstOMXVideoDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
gobject_class->finalize = gst_omx_video_dec_finalize;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_change_state);
video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_omx_video_dec_start);
video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_omx_video_dec_stop);
video_decoder_class->reset = GST_DEBUG_FUNCPTR (gst_omx_video_dec_reset);
video_decoder_class->set_format =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_set_format);
video_decoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_handle_frame);
video_decoder_class->finish = GST_DEBUG_FUNCPTR (gst_omx_video_dec_finish);
klass->cdata.default_src_template_caps = "video/x-raw, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = " GST_VIDEO_FPS_RANGE;
}
static void
gst_omx_video_dec_init (GstOMXVideoDec * self)
{
gst_video_decoder_set_packetized (GST_VIDEO_DECODER (self), TRUE);
self->drain_lock = g_mutex_new ();
self->drain_cond = g_cond_new ();
}
static gboolean
gst_omx_video_dec_open (GstOMXVideoDec * self)
{
GstOMXVideoDecClass *klass = GST_OMX_VIDEO_DEC_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "Opening decoder");
self->component =
gst_omx_component_new (GST_OBJECT_CAST (self), &klass->cdata);
self->started = FALSE;
if (!self->component)
return FALSE;
if (gst_omx_component_get_state (self->component,
GST_CLOCK_TIME_NONE) != OMX_StateLoaded)
return FALSE;
self->in_port =
gst_omx_component_add_port (self->component, klass->cdata.in_port_index);
self->out_port =
gst_omx_component_add_port (self->component, klass->cdata.out_port_index);
if (!self->in_port || !self->out_port)
return FALSE;
GST_DEBUG_OBJECT (self, "Opened decoder");
return TRUE;
}
static gboolean
gst_omx_video_dec_shutdown (GstOMXVideoDec * self)
{
OMX_STATETYPE state;
GST_DEBUG_OBJECT (self, "Shutting down decoder");
state = gst_omx_component_get_state (self->component, 0);
if (state > OMX_StateLoaded || state == OMX_StateInvalid) {
if (state > OMX_StateIdle) {
gst_omx_component_set_state (self->component, OMX_StateIdle);
gst_omx_component_get_state (self->component, 5 * GST_SECOND);
}
gst_omx_component_set_state (self->component, OMX_StateLoaded);
gst_omx_port_deallocate_buffers (self->in_port);
gst_omx_port_deallocate_buffers (self->out_port);
if (state > OMX_StateLoaded)
gst_omx_component_get_state (self->component, 5 * GST_SECOND);
}
return TRUE;
}
static gboolean
gst_omx_video_dec_close (GstOMXVideoDec * self)
{
GST_DEBUG_OBJECT (self, "Closing decoder");
if (!gst_omx_video_dec_shutdown (self))
return FALSE;
self->in_port = NULL;
self->out_port = NULL;
if (self->component)
gst_omx_component_free (self->component);
self->component = NULL;
self->started = FALSE;
GST_DEBUG_OBJECT (self, "Closed decoder");
return TRUE;
}
static void
gst_omx_video_dec_finalize (GObject * object)
{
GstOMXVideoDec *self = GST_OMX_VIDEO_DEC (object);
g_mutex_free (self->drain_lock);
g_cond_free (self->drain_cond);
G_OBJECT_CLASS (gst_omx_video_dec_parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_omx_video_dec_change_state (GstElement * element, GstStateChange transition)
{
GstOMXVideoDec *self;
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
g_return_val_if_fail (GST_IS_OMX_VIDEO_DEC (element),
GST_STATE_CHANGE_FAILURE);
self = GST_OMX_VIDEO_DEC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_omx_video_dec_open (self))
ret = GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (self->in_port)
gst_omx_port_set_flushing (self->in_port, FALSE);
if (self->out_port)
gst_omx_port_set_flushing (self->out_port, FALSE);
self->downstream_flow_ret = GST_FLOW_OK;
self->draining = FALSE;
self->started = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (self->in_port)
gst_omx_port_set_flushing (self->in_port, TRUE);
if (self->out_port)
gst_omx_port_set_flushing (self->out_port, TRUE);
g_mutex_lock (self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (self->drain_cond);
g_mutex_unlock (self->drain_lock);
break;
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret =
GST_ELEMENT_CLASS (gst_omx_video_dec_parent_class)->change_state (element,
transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
self->downstream_flow_ret = GST_FLOW_FLUSHING;
self->started = FALSE;
if (!gst_omx_video_dec_shutdown (self))
ret = GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (!gst_omx_video_dec_close (self))
ret = GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
return ret;
}
#define MAX_FRAME_DIST_TICKS (5 * OMX_TICKS_PER_SECOND)
#define MAX_FRAME_DIST_FRAMES (100)
static GstVideoCodecFrame *
_find_nearest_frame (GstOMXVideoDec * self, GstOMXBuffer * buf)
{
GList *l, *best_l = NULL;
GList *finish_frames = NULL;
GstVideoCodecFrame *best = NULL;
guint64 best_timestamp = 0;
guint64 best_diff = G_MAXUINT64;
BufferIdentification *best_id = NULL;
GList *frames;
frames = gst_video_decoder_get_frames (GST_VIDEO_DECODER (self));
for (l = frames; l; l = l->next) {
GstVideoCodecFrame *tmp = l->data;
BufferIdentification *id = gst_video_codec_frame_get_user_data (tmp);
guint64 timestamp, diff;
/* This happens for frames that were just added but
* which were not passed to the component yet. Ignore
* them here!
*/
if (!id)
continue;
timestamp = id->timestamp;
if (timestamp > buf->omx_buf->nTimeStamp)
diff = timestamp - buf->omx_buf->nTimeStamp;
else
diff = buf->omx_buf->nTimeStamp - timestamp;
if (best == NULL || diff < best_diff) {
best = tmp;
best_timestamp = timestamp;
best_diff = diff;
best_l = l;
best_id = id;
/* For frames without timestamp we simply take the first frame */
if ((buf->omx_buf->nTimeStamp == 0 && timestamp == 0) || diff == 0)
break;
}
}
if (best_id) {
for (l = frames; l && l != best_l; l = l->next) {
GstVideoCodecFrame *tmp = l->data;
BufferIdentification *id = gst_video_codec_frame_get_user_data (tmp);
guint64 diff_ticks, diff_frames;
if (id->timestamp > best_timestamp)
break;
if (id->timestamp == 0 || best_timestamp == 0)
diff_ticks = 0;
else
diff_ticks = best_timestamp - id->timestamp;
diff_frames = best->system_frame_number - tmp->system_frame_number;
if (diff_ticks > MAX_FRAME_DIST_TICKS
|| diff_frames > MAX_FRAME_DIST_FRAMES) {
finish_frames = g_list_prepend (finish_frames, tmp);
}
}
}
if (finish_frames) {
g_warning ("Too old frames, bug in decoder -- please file a bug");
for (l = finish_frames; l; l = l->next) {
gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), l->data);
}
}
if (best)
gst_video_codec_frame_ref (best);
g_list_foreach (frames, (GFunc) gst_video_codec_frame_unref, NULL);
g_list_free (frames);
return best;
}
static gboolean
gst_omx_video_dec_fill_buffer (GstOMXVideoDec * self, GstOMXBuffer * inbuf,
GstBuffer * outbuf)
{
GstVideoCodecState *state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (self));
GstVideoInfo *vinfo = &state->info;
OMX_PARAM_PORTDEFINITIONTYPE *port_def = &self->out_port->port_def;
gboolean ret = FALSE;
GstVideoFrame frame;
if (vinfo->width != port_def->format.video.nFrameWidth ||
vinfo->height != port_def->format.video.nFrameHeight) {
GST_ERROR_OBJECT (self, "Width or height do not match");
goto done;
}
/* Same strides and everything */
if (gst_buffer_get_size (outbuf) == inbuf->omx_buf->nFilledLen) {
GstMapInfo map = GST_MAP_INFO_INIT;
gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
memcpy (map.data,
inbuf->omx_buf->pBuffer + inbuf->omx_buf->nOffset,
inbuf->omx_buf->nFilledLen);
gst_buffer_unmap (outbuf, &map);
ret = TRUE;
goto done;
}
/* Different strides */
switch (vinfo->finfo->format) {
case GST_VIDEO_FORMAT_I420:{
gint i, j, height;
guint8 *src, *dest;
gint src_stride, dest_stride;
gst_video_frame_map (&frame, vinfo, outbuf, GST_MAP_WRITE);
for (i = 0; i < 3; i++) {
if (i == 0) {
src_stride = port_def->format.video.nStride;
dest_stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
} else {
src_stride = port_def->format.video.nStride / 2;
dest_stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
}
src = inbuf->omx_buf->pBuffer + inbuf->omx_buf->nOffset;
if (i > 0)
src +=
port_def->format.video.nSliceHeight *
port_def->format.video.nStride;
if (i == 2)
src +=
(port_def->format.video.nSliceHeight / 2) *
(port_def->format.video.nStride / 2);
dest = GST_VIDEO_FRAME_COMP_DATA (&frame, i);
height = GST_VIDEO_FRAME_HEIGHT (&frame);
for (j = 0; j < height; j++) {
memcpy (dest, src, MIN (src_stride, dest_stride));
src += src_stride;
dest += dest_stride;
}
}
gst_video_frame_unmap (&frame);
ret = TRUE;
break;
}
case GST_VIDEO_FORMAT_NV12:{
gint i, j, height;
guint8 *src, *dest;
gint src_stride, dest_stride;
gst_video_frame_map (&frame, vinfo, outbuf, GST_MAP_WRITE);
for (i = 0; i < 2; i++) {
if (i == 0) {
src_stride = port_def->format.video.nStride;
dest_stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
} else {
src_stride = port_def->format.video.nStride;
dest_stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, i);
/* XXX: Try this if no stride was set */
if (src_stride == 0)
src_stride = dest_stride;
}
src = inbuf->omx_buf->pBuffer + inbuf->omx_buf->nOffset;
if (i == 1)
src +=
port_def->format.video.nSliceHeight *
port_def->format.video.nStride;
dest = GST_VIDEO_FRAME_COMP_DATA (&frame, i);
height = GST_VIDEO_FRAME_HEIGHT (&frame);
for (j = 0; j < height; j++) {
memcpy (dest, src, MIN (src_stride, dest_stride));
src += src_stride;
dest += dest_stride;
}
}
gst_video_frame_unmap (&frame);
ret = TRUE;
break;
}
default:
GST_ERROR_OBJECT (self, "Unsupported format");
goto done;
break;
}
done:
if (ret) {
GST_BUFFER_PTS (outbuf) =
gst_util_uint64_scale (inbuf->omx_buf->nTimeStamp, GST_SECOND,
OMX_TICKS_PER_SECOND);
if (inbuf->omx_buf->nTickCount != 0)
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale (inbuf->omx_buf->nTickCount, GST_SECOND,
OMX_TICKS_PER_SECOND);
}
gst_video_codec_state_unref (state);
return ret;
}
static void
gst_omx_video_dec_loop (GstOMXVideoDec * self)
{
GstOMXVideoDecClass *klass;
GstOMXPort *port = self->out_port;
GstOMXBuffer *buf = NULL;
GstVideoCodecFrame *frame;
GstFlowReturn flow_ret = GST_FLOW_OK;
GstOMXAcquireBufferReturn acq_return;
GstClockTimeDiff deadline;
gboolean is_eos;
klass = GST_OMX_VIDEO_DEC_GET_CLASS (self);
acq_return = gst_omx_port_acquire_buffer (port, &buf);
if (acq_return == GST_OMX_ACQUIRE_BUFFER_ERROR) {
goto component_error;
} else if (acq_return == GST_OMX_ACQUIRE_BUFFER_FLUSHING) {
goto flushing;
} else if (acq_return == GST_OMX_ACQUIRE_BUFFER_RECONFIGURE) {
if (gst_omx_port_reconfigure (self->out_port) != OMX_ErrorNone)
goto reconfigure_error;
/* And restart the loop */
return;
}
if (!gst_pad_has_current_caps (GST_VIDEO_DECODER_SRC_PAD (self))
|| acq_return == GST_OMX_ACQUIRE_BUFFER_RECONFIGURED) {
GstVideoCodecState *state;
OMX_PARAM_PORTDEFINITIONTYPE port_def;
GstVideoFormat format;
GST_DEBUG_OBJECT (self, "Port settings have changed, updating caps");
GST_VIDEO_DECODER_STREAM_LOCK (self);
gst_omx_port_get_port_definition (port, &port_def);
g_assert (port_def.format.video.eCompressionFormat ==
OMX_VIDEO_CodingUnused);
switch (port_def.format.video.eColorFormat) {
case OMX_COLOR_FormatYUV420Planar:
format = GST_VIDEO_FORMAT_I420;
break;
case OMX_COLOR_FormatYUV420SemiPlanar:
format = GST_VIDEO_FORMAT_NV12;
break;
default:
GST_ERROR_OBJECT (self, "Unsupported color format: %d",
port_def.format.video.eColorFormat);
if (buf)
gst_omx_port_release_buffer (self->out_port, buf);
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
goto caps_failed;
break;
}
state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self),
format, port_def.format.video.nFrameWidth,
port_def.format.video.nFrameHeight, self->input_state);
/* Take framerate and pixel-aspect-ratio from sinkpad caps */
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
if (buf)
gst_omx_port_release_buffer (self->out_port, buf);
gst_video_codec_state_unref (state);
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
goto caps_failed;
}
gst_video_codec_state_unref (state);
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
/* Now get a buffer */
if (acq_return != GST_OMX_ACQUIRE_BUFFER_OK)
return;
}
g_assert (acq_return == GST_OMX_ACQUIRE_BUFFER_OK);
if (buf) {
GST_DEBUG_OBJECT (self, "Handling buffer: 0x%08x %lu", buf->omx_buf->nFlags,
buf->omx_buf->nTimeStamp);
/* This prevents a deadlock between the srcpad stream
* lock and the videocodec stream lock, if ::reset()
* is called at the wrong time
*/
if (gst_omx_port_is_flushing (self->out_port)) {
GST_DEBUG_OBJECT (self, "Flushing");
gst_omx_port_release_buffer (self->out_port, buf);
goto flushing;
}
GST_VIDEO_DECODER_STREAM_LOCK (self);
frame = _find_nearest_frame (self, buf);
is_eos = ! !(buf->omx_buf->nFlags & OMX_BUFFERFLAG_EOS);
if (frame
&& (deadline = gst_video_decoder_get_max_decode_time
(GST_VIDEO_DECODER (self), frame)) < 0) {
GST_WARNING_OBJECT (self,
"Frame is too late, dropping (deadline %" GST_TIME_FORMAT ")",
GST_TIME_ARGS (-deadline));
flow_ret = gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame);
} else if (!frame && buf->omx_buf->nFilledLen > 0) {
GstBuffer *outbuf;
/* This sometimes happens at EOS or if the input is not properly framed,
* let's handle it gracefully by allocating a new buffer for the current
* caps and filling it
*/
GST_ERROR_OBJECT (self, "No corresponding frame found");
outbuf =
gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (self));
if (!gst_omx_video_dec_fill_buffer (self, buf, outbuf)) {
gst_buffer_unref (outbuf);
gst_omx_port_release_buffer (self->out_port, buf);
goto invalid_buffer;
}
flow_ret = gst_pad_push (GST_VIDEO_DECODER_SRC_PAD (self), outbuf);
} else if (buf->omx_buf->nFilledLen > 0) {
if ((flow_ret = gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER
(self), frame)) == GST_FLOW_OK) {
/* FIXME: This currently happens because of a race condition too.
* We first need to reconfigure the output port and then the input
* port if both need reconfiguration.
*/
if (!gst_omx_video_dec_fill_buffer (self, buf, frame->output_buffer)) {
gst_buffer_replace (&frame->output_buffer, NULL);
flow_ret =
gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
gst_omx_port_release_buffer (self->out_port, buf);
goto invalid_buffer;
}
flow_ret =
gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
}
} else if (frame != NULL) {
flow_ret =
gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
}
if (is_eos || flow_ret == GST_FLOW_EOS) {
g_mutex_lock (self->drain_lock);
if (self->draining) {
GST_DEBUG_OBJECT (self, "Drained");
self->draining = FALSE;
g_cond_broadcast (self->drain_cond);
} else if (flow_ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (self, "Component signalled EOS");
flow_ret = GST_FLOW_EOS;
}
g_mutex_unlock (self->drain_lock);
} else {
GST_DEBUG_OBJECT (self, "Finished frame: %s",
gst_flow_get_name (flow_ret));
}
gst_omx_port_release_buffer (port, buf);
self->downstream_flow_ret = flow_ret;
} else {
g_assert ((klass->cdata.hacks & GST_OMX_HACK_NO_EMPTY_EOS_BUFFER));
GST_VIDEO_DECODER_STREAM_LOCK (self);
flow_ret = GST_FLOW_EOS;
}
if (flow_ret != GST_FLOW_OK)
goto flow_error;
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
return;
component_error:
{
GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL),
("OpenMAX component in error state %s (0x%08x)",
gst_omx_component_get_last_error_string (self->component),
gst_omx_component_get_last_error (self->component)));
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
self->started = FALSE;
return;
}
flushing:
{
GST_DEBUG_OBJECT (self, "Flushing -- stopping task");
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_FLUSHING;
self->started = FALSE;
return;
}
flow_error:
{
if (flow_ret == GST_FLOW_EOS) {
GST_DEBUG_OBJECT (self, "EOS");
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
} else if (flow_ret == GST_FLOW_NOT_LINKED || flow_ret < GST_FLOW_EOS) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Internal data stream error."),
("stream stopped, reason %s", gst_flow_get_name (flow_ret)));
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
}
self->started = FALSE;
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
return;
}
reconfigure_error:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Unable to reconfigure output port"));
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
self->started = FALSE;
return;
}
invalid_buffer:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Invalid sized input buffer"));
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_NOT_NEGOTIATED;
self->started = FALSE;
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
return;
}
caps_failed:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL), ("Failed to set caps"));
gst_pad_push_event (GST_VIDEO_DECODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_NOT_NEGOTIATED;
self->started = FALSE;
return;
}
}
static gboolean
gst_omx_video_dec_start (GstVideoDecoder * decoder)
{
GstOMXVideoDec *self;
gboolean ret;
self = GST_OMX_VIDEO_DEC (decoder);
self->last_upstream_ts = 0;
self->eos = FALSE;
self->downstream_flow_ret = GST_FLOW_OK;
ret =
gst_pad_start_task (GST_VIDEO_DECODER_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, self, NULL);
return ret;
}
static gboolean
gst_omx_video_dec_stop (GstVideoDecoder * decoder)
{
GstOMXVideoDec *self;
self = GST_OMX_VIDEO_DEC (decoder);
GST_DEBUG_OBJECT (self, "Stopping decoder");
gst_omx_port_set_flushing (self->in_port, TRUE);
gst_omx_port_set_flushing (self->out_port, TRUE);
gst_pad_stop_task (GST_VIDEO_DECODER_SRC_PAD (decoder));
if (gst_omx_component_get_state (self->component, 0) > OMX_StateIdle)
gst_omx_component_set_state (self->component, OMX_StateIdle);
self->downstream_flow_ret = GST_FLOW_FLUSHING;
self->started = FALSE;
self->eos = FALSE;
g_mutex_lock (self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (self->drain_cond);
g_mutex_unlock (self->drain_lock);
gst_omx_component_get_state (self->component, 5 * GST_SECOND);
gst_buffer_replace (&self->codec_data, NULL);
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = NULL;
GST_DEBUG_OBJECT (self, "Stopped decoder");
return TRUE;
}
static gboolean
gst_omx_video_dec_negotiate (GstOMXVideoDec * self)
{
GstOMXPort *port = self->out_port;
GstVideoCodecState *state = self->input_state;
GstVideoInfo *info = &state->info;
OMX_VIDEO_PARAM_PORTFORMATTYPE param;
OMX_ERRORTYPE err;
GstCaps *comp_supported_caps;
GstCaps *templ_caps;
GstCaps *peer_caps, *intersection;
GstVideoFormat format;
gint old_index;
GstStructure *s;
const gchar *format_str;
templ_caps =
gst_caps_copy (gst_pad_get_pad_template_caps (GST_VIDEO_DECODER_SRC_PAD
(self)));
peer_caps =
gst_pad_peer_query_caps (GST_VIDEO_DECODER_SRC_PAD (self), templ_caps);
if (peer_caps) {
intersection = peer_caps;
gst_caps_unref (templ_caps);
} else {
intersection = templ_caps;
}
GST_OMX_INIT_STRUCT (&param);
param.nPortIndex = port->index;
param.nIndex = 0;
if (info->fps_n == 0)
param.xFramerate = 0;
else
param.xFramerate = (info->fps_n << 16) / (info->fps_d);
old_index = -1;
comp_supported_caps = gst_caps_new_empty ();
do {
err =
gst_omx_component_get_parameter (self->component,
OMX_IndexParamVideoPortFormat, &param);
/* FIXME: Workaround for Bellagio that simply always
* returns the same value regardless of nIndex and
* never returns OMX_ErrorNoMore
*/
if (old_index == param.nIndex)
break;
if (err == OMX_ErrorNone) {
switch (param.eColorFormat) {
case OMX_COLOR_FormatYUV420Planar:
gst_caps_append_structure (comp_supported_caps,
gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, "I420", NULL));
break;
case OMX_COLOR_FormatYUV420SemiPlanar:
gst_caps_append_structure (comp_supported_caps,
gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, "NV12", NULL));
break;
default:
break;
}
}
old_index = param.nIndex++;
} while (err == OMX_ErrorNone);
if (!gst_caps_is_empty (comp_supported_caps)) {
GstCaps *tmp;
tmp = gst_caps_intersect (comp_supported_caps, intersection);
gst_caps_unref (intersection);
intersection = tmp;
}
if (gst_caps_is_empty (intersection)) {
gst_caps_unref (intersection);
GST_ERROR_OBJECT (self, "Empty caps");
return FALSE;
}
intersection = gst_caps_truncate (intersection);
s = gst_caps_get_structure (intersection, 0);
format_str = gst_structure_get_string (s, "format");
if (!format_str ||
(format =
gst_video_format_from_string (format_str)) ==
GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (self, "Invalid caps: %" GST_PTR_FORMAT, intersection);
return FALSE;
}
switch (format) {
case GST_VIDEO_FORMAT_I420:
param.eColorFormat = OMX_COLOR_FormatYUV420Planar;
break;
case GST_VIDEO_FORMAT_NV12:
param.eColorFormat = OMX_COLOR_FormatYUV420SemiPlanar;
break;
default:
GST_ERROR_OBJECT (self, "Unknown color format: %u", format);
return FALSE;
break;
}
/* Reset framerate, we only care about the color format here */
param.xFramerate = 0;
err =
gst_omx_component_set_parameter (self->component,
OMX_IndexParamVideoPortFormat, &param);
if (err != OMX_ErrorNone) {
GST_ERROR_OBJECT (self, "Failed to set video port format: %s (0x%08x)",
gst_omx_error_to_string (err), err);
}
return (err == OMX_ErrorNone);
}
static gboolean
gst_omx_video_dec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state)
{
GstOMXVideoDec *self;
GstOMXVideoDecClass *klass;
GstVideoInfo *info = &state->info;
gboolean is_format_change = FALSE;
gboolean needs_disable = FALSE;
OMX_PARAM_PORTDEFINITIONTYPE port_def;
self = GST_OMX_VIDEO_DEC (decoder);
klass = GST_OMX_VIDEO_DEC_GET_CLASS (decoder);
GST_DEBUG_OBJECT (self, "Setting new caps %" GST_PTR_FORMAT, state->caps);
gst_omx_port_get_port_definition (self->in_port, &port_def);
/* Check if the caps change is a real format change or if only irrelevant
* parts of the caps have changed or nothing at all.
*/
is_format_change |= port_def.format.video.nFrameWidth != info->width;
is_format_change |= port_def.format.video.nFrameHeight != info->height;
is_format_change |= (port_def.format.video.xFramerate == 0
&& info->fps_n != 0)
|| (port_def.format.video.xFramerate !=
(info->fps_n << 16) / (info->fps_d));
is_format_change |= (self->codec_data != state->codec_data);
if (klass->is_format_change)
is_format_change |= klass->is_format_change (self, self->in_port, state);
needs_disable =
gst_omx_component_get_state (self->component,
GST_CLOCK_TIME_NONE) != OMX_StateLoaded;
/* If the component is not in Loaded state and a real format change happens
* we have to disable the port and re-allocate all buffers. If no real
* format change happened we can just exit here.
*/
if (needs_disable && !is_format_change) {
GST_DEBUG_OBJECT (self,
"Already running and caps did not change the format");
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = gst_video_codec_state_ref (state);
return TRUE;
}
if (needs_disable && is_format_change) {
gst_omx_video_dec_drain (self, FALSE);
if (klass->cdata.hacks & GST_OMX_HACK_NO_COMPONENT_RECONFIGURE) {
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
gst_omx_video_dec_stop (GST_VIDEO_DECODER (self));
gst_omx_video_dec_close (self);
GST_VIDEO_DECODER_STREAM_LOCK (self);
if (!gst_omx_video_dec_open (self))
return FALSE;
needs_disable = FALSE;
} else {
if (gst_omx_port_manual_reconfigure (self->in_port,
TRUE) != OMX_ErrorNone)
return FALSE;
if (gst_omx_port_set_enabled (self->in_port, FALSE) != OMX_ErrorNone)
return FALSE;
}
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = NULL;
}
port_def.format.video.nFrameWidth = info->width;
port_def.format.video.nFrameHeight = info->height;
if (info->fps_n == 0)
port_def.format.video.xFramerate = 0;
else
port_def.format.video.xFramerate = (info->fps_n << 16) / (info->fps_d);
if (!gst_omx_port_update_port_definition (self->in_port, &port_def))
return FALSE;
if (!gst_omx_port_update_port_definition (self->out_port, NULL))
return FALSE;
if (klass->set_format) {
if (!klass->set_format (self, self->in_port, state)) {
GST_ERROR_OBJECT (self, "Subclass failed to set the new format");
return FALSE;
}
}
gst_buffer_replace (&self->codec_data, state->codec_data);
self->input_state = gst_video_codec_state_ref (state);
if (!gst_omx_video_dec_negotiate (self))
return FALSE;
if (needs_disable) {
if (gst_omx_port_set_enabled (self->in_port, TRUE) != OMX_ErrorNone)
return FALSE;
if (gst_omx_port_manual_reconfigure (self->in_port, FALSE) != OMX_ErrorNone)
return FALSE;
} else {
if (gst_omx_component_set_state (self->component,
OMX_StateIdle) != OMX_ErrorNone)
return FALSE;
/* Need to allocate buffers to reach Idle state */
if (gst_omx_port_allocate_buffers (self->in_port) != OMX_ErrorNone)
return FALSE;
if (gst_omx_port_allocate_buffers (self->out_port) != OMX_ErrorNone)
return FALSE;
if (gst_omx_component_get_state (self->component,
GST_CLOCK_TIME_NONE) != OMX_StateIdle)
return FALSE;
if (gst_omx_component_set_state (self->component,
OMX_StateExecuting) != OMX_ErrorNone)
return FALSE;
if (gst_omx_component_get_state (self->component,
GST_CLOCK_TIME_NONE) != OMX_StateExecuting)
return FALSE;
}
/* Unset flushing to allow ports to accept data again */
gst_omx_port_set_flushing (self->in_port, FALSE);
gst_omx_port_set_flushing (self->out_port, FALSE);
if (gst_omx_component_get_last_error (self->component) != OMX_ErrorNone) {
GST_ERROR_OBJECT (self, "Component in error state: %s (0x%08x)",
gst_omx_component_get_last_error_string (self->component),
gst_omx_component_get_last_error (self->component));
return FALSE;
}
/* Start the srcpad loop again */
self->downstream_flow_ret = GST_FLOW_OK;
gst_pad_start_task (GST_VIDEO_DECODER_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, decoder, NULL);
return TRUE;
}
static gboolean
gst_omx_video_dec_reset (GstVideoDecoder * decoder, gboolean hard)
{
GstOMXVideoDec *self;
self = GST_OMX_VIDEO_DEC (decoder);
/* FIXME: Handle different values of hard */
GST_DEBUG_OBJECT (self, "Resetting decoder");
gst_omx_port_set_flushing (self->in_port, TRUE);
gst_omx_port_set_flushing (self->out_port, TRUE);
/* Wait until the srcpad loop is finished,
* unlock GST_VIDEO_DECODER_STREAM_LOCK to prevent deadlocks
* caused by using this lock from inside the loop function */
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
GST_PAD_STREAM_LOCK (GST_VIDEO_DECODER_SRC_PAD (self));
GST_PAD_STREAM_UNLOCK (GST_VIDEO_DECODER_SRC_PAD (self));
GST_VIDEO_DECODER_STREAM_LOCK (self);
gst_omx_port_set_flushing (self->in_port, FALSE);
gst_omx_port_set_flushing (self->out_port, FALSE);
/* Start the srcpad loop again */
self->last_upstream_ts = 0;
self->eos = FALSE;
self->downstream_flow_ret = GST_FLOW_OK;
gst_pad_start_task (GST_VIDEO_DECODER_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, decoder, NULL);
GST_DEBUG_OBJECT (self, "Reset decoder");
return TRUE;
}
static GstFlowReturn
gst_omx_video_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame)
{
GstOMXAcquireBufferReturn acq_ret = GST_OMX_ACQUIRE_BUFFER_ERROR;
GstOMXVideoDec *self;
GstOMXVideoDecClass *klass;
GstOMXBuffer *buf;
GstBuffer *codec_data = NULL;
guint offset = 0;
GstClockTime timestamp, duration, timestamp_offset = 0;
self = GST_OMX_VIDEO_DEC (decoder);
klass = GST_OMX_VIDEO_DEC_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "Handling frame");
if (self->eos) {
GST_WARNING_OBJECT (self, "Got frame after EOS");
return GST_FLOW_EOS;
}
timestamp = frame->pts;
duration = frame->duration;
if (self->downstream_flow_ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Downstream returned %s",
gst_flow_get_name (self->downstream_flow_ret));
return self->downstream_flow_ret;
}
if (klass->prepare_frame) {
GstFlowReturn ret;
ret = klass->prepare_frame (self, frame);
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Preparing frame failed: %s",
gst_flow_get_name (ret));
return ret;
}
}
while (offset < gst_buffer_get_size (frame->input_buffer)) {
/* Make sure to release the base class stream lock, otherwise
* _loop() can't call _finish_frame() and we might block forever
* because no input buffers are released */
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
acq_ret = gst_omx_port_acquire_buffer (self->in_port, &buf);
GST_VIDEO_DECODER_STREAM_LOCK (self);
if (acq_ret == GST_OMX_ACQUIRE_BUFFER_ERROR) {
goto component_error;
} else if (acq_ret == GST_OMX_ACQUIRE_BUFFER_FLUSHING) {
goto flushing;
} else if (acq_ret == GST_OMX_ACQUIRE_BUFFER_RECONFIGURE) {
if (gst_omx_port_reconfigure (self->in_port) != OMX_ErrorNone)
goto reconfigure_error;
/* Now get a new buffer and fill it */
continue;
} else if (acq_ret == GST_OMX_ACQUIRE_BUFFER_RECONFIGURED) {
/* TODO: Anything to do here? Don't think so */
continue;
}
g_assert (acq_ret == GST_OMX_ACQUIRE_BUFFER_OK && buf != NULL);
if (buf->omx_buf->nAllocLen - buf->omx_buf->nOffset <= 0) {
gst_omx_port_release_buffer (self->in_port, buf);
goto full_buffer;
}
if (self->downstream_flow_ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Downstream returned %s",
gst_flow_get_name (self->downstream_flow_ret));
gst_omx_port_release_buffer (self->in_port, buf);
return self->downstream_flow_ret;
}
if (self->codec_data) {
codec_data = self->codec_data;
if (buf->omx_buf->nAllocLen - buf->omx_buf->nOffset <
gst_buffer_get_size (codec_data)) {
gst_omx_port_release_buffer (self->in_port, buf);
goto too_large_codec_data;
}
buf->omx_buf->nFlags |= OMX_BUFFERFLAG_CODECCONFIG;
buf->omx_buf->nFilledLen = gst_buffer_get_size (codec_data);;
gst_buffer_extract (codec_data, 0,
buf->omx_buf->pBuffer + buf->omx_buf->nOffset,
buf->omx_buf->nFilledLen);
self->started = TRUE;
gst_omx_port_release_buffer (self->in_port, buf);
gst_buffer_replace (&self->codec_data, NULL);
/* Acquire new buffer for the actual frame */
continue;
}
/* Now handle the frame */
/* Copy the buffer content in chunks of size as requested
* by the port */
gst_buffer_extract (codec_data, offset,
buf->omx_buf->pBuffer + buf->omx_buf->nOffset,
buf->omx_buf->nFilledLen);
/* Interpolate timestamps if we're passing the buffer
* in multiple chunks */
if (offset != 0 && duration != GST_CLOCK_TIME_NONE) {
timestamp_offset =
gst_util_uint64_scale (offset, duration,
gst_buffer_get_size (frame->input_buffer));
}
if (timestamp != GST_CLOCK_TIME_NONE) {
buf->omx_buf->nTimeStamp =
gst_util_uint64_scale (timestamp + timestamp_offset,
OMX_TICKS_PER_SECOND, GST_SECOND);
self->last_upstream_ts = timestamp + timestamp_offset;
}
if (duration != GST_CLOCK_TIME_NONE) {
buf->omx_buf->nTickCount =
gst_util_uint64_scale (buf->omx_buf->nFilledLen, duration,
gst_buffer_get_size (frame->input_buffer));
self->last_upstream_ts += duration;
}
if (offset == 0) {
BufferIdentification *id = g_slice_new0 (BufferIdentification);
if (GST_VIDEO_CODEC_FRAME_IS_SYNC_POINT (frame))
buf->omx_buf->nFlags |= OMX_BUFFERFLAG_SYNCFRAME;
id->timestamp = buf->omx_buf->nTimeStamp;
gst_video_codec_frame_set_user_data (frame, id,
(GDestroyNotify) buffer_identification_free);
}
/* TODO: Set flags
* - OMX_BUFFERFLAG_DECODEONLY for buffers that are outside
* the segment
* - OMX_BUFFERFLAG_ENDOFFRAME for parsed input
*/
offset += buf->omx_buf->nFilledLen;
self->started = TRUE;
gst_omx_port_release_buffer (self->in_port, buf);
}
return self->downstream_flow_ret;
full_buffer:
{
GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL),
("Got OpenMAX buffer with no free space (%p, %u/%u)", buf,
buf->omx_buf->nOffset, buf->omx_buf->nAllocLen));
return GST_FLOW_ERROR;
}
too_large_codec_data:
{
GST_ELEMENT_ERROR (self, STREAM, FORMAT, (NULL),
("codec_data larger than supported by OpenMAX port (%u > %u)",
gst_buffer_get_size (codec_data),
self->in_port->port_def.nBufferSize));
return GST_FLOW_ERROR;
}
component_error:
{
GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL),
("OpenMAX component in error state %s (0x%08x)",
gst_omx_component_get_last_error_string (self->component),
gst_omx_component_get_last_error (self->component)));
return GST_FLOW_ERROR;
}
flushing:
{
GST_DEBUG_OBJECT (self, "Flushing -- returning FLUSHING");
return GST_FLOW_FLUSHING;
}
reconfigure_error:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Unable to reconfigure input port"));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_omx_video_dec_finish (GstVideoDecoder * decoder)
{
GstOMXVideoDec *self;
self = GST_OMX_VIDEO_DEC (decoder);
return gst_omx_video_dec_drain (self, TRUE);
}
static GstFlowReturn
gst_omx_video_dec_drain (GstOMXVideoDec * self, gboolean is_eos)
{
GstOMXVideoDecClass *klass;
GstOMXBuffer *buf;
GstOMXAcquireBufferReturn acq_ret;
GST_DEBUG_OBJECT (self, "Draining component");
klass = GST_OMX_VIDEO_DEC_GET_CLASS (self);
if (!self->started) {
GST_DEBUG_OBJECT (self, "Component not started yet");
return GST_FLOW_OK;
}
self->started = FALSE;
/* Don't send EOS buffer twice, this doesn't work */
if (self->eos) {
GST_DEBUG_OBJECT (self, "Component is EOS already");
return GST_FLOW_OK;
}
if (is_eos)
self->eos = TRUE;
if ((klass->cdata.hacks & GST_OMX_HACK_NO_EMPTY_EOS_BUFFER)) {
GST_WARNING_OBJECT (self, "Component does not support empty EOS buffers");
return GST_FLOW_OK;
}
/* Make sure to release the base class stream lock, otherwise
* _loop() can't call _finish_frame() and we might block forever
* because no input buffers are released */
GST_VIDEO_DECODER_STREAM_UNLOCK (self);
/* Send an EOS buffer to the component and let the base
* class drop the EOS event. We will send it later when
* the EOS buffer arrives on the output port. */
acq_ret = gst_omx_port_acquire_buffer (self->in_port, &buf);
if (acq_ret != GST_OMX_ACQUIRE_BUFFER_OK) {
GST_VIDEO_DECODER_STREAM_LOCK (self);
GST_ERROR_OBJECT (self, "Failed to acquire buffer for draining: %d",
acq_ret);
return GST_FLOW_ERROR;
}
g_mutex_lock (self->drain_lock);
self->draining = TRUE;
buf->omx_buf->nFilledLen = 0;
buf->omx_buf->nTimeStamp =
gst_util_uint64_scale (self->last_upstream_ts, OMX_TICKS_PER_SECOND,
GST_SECOND);
buf->omx_buf->nTickCount = 0;
buf->omx_buf->nFlags |= OMX_BUFFERFLAG_EOS;
gst_omx_port_release_buffer (self->in_port, buf);
GST_DEBUG_OBJECT (self, "Waiting until component is drained");
if (G_UNLIKELY (self->component->hacks & GST_OMX_HACK_DRAIN_MAY_NOT_RETURN)) {
GTimeVal tv = {.tv_sec = 0,.tv_usec = 500000 };
if (!g_cond_timed_wait (self->drain_cond, self->drain_lock, &tv))
GST_WARNING_OBJECT (self, "Drain timed out");
else
GST_DEBUG_OBJECT (self, "Drained component");
} else {
g_cond_wait (self->drain_cond, self->drain_lock);
GST_DEBUG_OBJECT (self, "Drained component");
}
g_mutex_unlock (self->drain_lock);
GST_VIDEO_DECODER_STREAM_LOCK (self);
self->started = FALSE;
return GST_FLOW_OK;
}
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