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gstreamer/omx/gstomxvideodec.c

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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 (GstBaseVideoDecoder * decoder);
static gboolean gst_omx_video_dec_stop (GstBaseVideoDecoder * decoder);
static gboolean gst_omx_video_dec_set_format (GstBaseVideoDecoder * decoder,
GstVideoState * state);
static gboolean gst_omx_video_dec_reset (GstBaseVideoDecoder * decoder);
static GstFlowReturn gst_omx_video_dec_parse_data (GstBaseVideoDecoder *
decoder, gboolean at_eos);
static GstFlowReturn gst_omx_video_dec_handle_frame (GstBaseVideoDecoder *
decoder, GstVideoFrame * frame);
static GstFlowReturn gst_omx_video_dec_finish (GstBaseVideoDecoder * decoder);
enum
{
PROP_0
};
/* class initialization */
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_omx_video_dec_debug_category, "omxvideodec", 0, \
"debug category for gst-omx video decoder base class");
GST_BOILERPLATE_FULL (GstOMXVideoDec, gst_omx_video_dec, GstBaseVideoDecoder,
GST_TYPE_BASE_VIDEO_DECODER, DEBUG_INIT);
static void
gst_omx_video_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstOMXVideoDecClass *videodec_class = GST_OMX_VIDEO_DEC_CLASS (g_class);
GKeyFile *config;
const gchar *element_name;
GError *err;
gchar *core_name, *component_name, *component_role;
gint in_port_index, out_port_index;
gchar *template_caps;
GstPadTemplate *templ;
GstCaps *caps;
gchar **hacks;
element_name =
g_type_get_qdata (G_TYPE_FROM_CLASS (g_class),
gst_omx_element_name_quark);
/* This happens for the base class and abstract subclasses */
if (!element_name)
return;
config = gst_omx_get_configuration ();
/* This will always succeed, see check in plugin_init */
core_name = g_key_file_get_string (config, element_name, "core-name", NULL);
g_assert (core_name != NULL);
videodec_class->core_name = core_name;
component_name =
g_key_file_get_string (config, element_name, "component-name", NULL);
g_assert (component_name != NULL);
videodec_class->component_name = component_name;
/* If this fails we simply don't set a role */
if ((component_role =
g_key_file_get_string (config, element_name, "component-role",
NULL))) {
GST_DEBUG ("Using component-role '%s' for element '%s'", component_role,
element_name);
videodec_class->component_role = component_role;
}
/* Now set the inport/outport indizes and assume sane defaults */
err = NULL;
in_port_index =
g_key_file_get_integer (config, element_name, "in-port-index", &err);
if (err != NULL) {
GST_DEBUG ("No 'in-port-index' set for element '%s', assuming 0: %s",
element_name, err->message);
in_port_index = 0;
g_error_free (err);
}
videodec_class->in_port_index = in_port_index;
err = NULL;
out_port_index =
g_key_file_get_integer (config, element_name, "out-port-index", &err);
if (err != NULL) {
GST_DEBUG ("No 'out-port-index' set for element '%s', assuming 1: %s",
element_name, err->message);
out_port_index = 1;
g_error_free (err);
}
videodec_class->out_port_index = out_port_index;
/* Add pad templates */
err = NULL;
if (!(template_caps =
g_key_file_get_string (config, element_name, "sink-template-caps",
&err))) {
GST_DEBUG
("No sink template caps specified for element '%s', using default '%s'",
element_name, videodec_class->default_sink_template_caps);
caps = gst_caps_from_string (videodec_class->default_sink_template_caps);
g_assert (caps != NULL);
g_error_free (err);
} else {
caps = gst_caps_from_string (template_caps);
if (!caps) {
GST_DEBUG
("Could not parse sink template caps '%s' for element '%s', using default '%s'",
template_caps, element_name,
videodec_class->default_sink_template_caps);
caps = gst_caps_from_string (videodec_class->default_sink_template_caps);
g_assert (caps != NULL);
}
}
templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
g_free (template_caps);
gst_element_class_add_pad_template (element_class, templ);
gst_object_unref (templ);
err = NULL;
if (!(template_caps =
g_key_file_get_string (config, element_name, "src-template-caps",
&err))) {
GST_DEBUG
("No src template caps specified for element '%s', using default '%s'",
element_name, videodec_class->default_src_template_caps);
caps = gst_caps_from_string (videodec_class->default_src_template_caps);
g_assert (caps != NULL);
g_error_free (err);
} else {
caps = gst_caps_from_string (template_caps);
if (!caps) {
GST_DEBUG
("Could not parse src template caps '%s' for element '%s', using default '%s'",
template_caps, element_name,
videodec_class->default_src_template_caps);
caps = gst_caps_from_string (videodec_class->default_src_template_caps);
g_assert (caps != NULL);
}
}
templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
g_free (template_caps);
gst_element_class_add_pad_template (element_class, templ);
gst_object_unref (templ);
if ((hacks =
g_key_file_get_string_list (config, element_name, "hacks", NULL,
NULL))) {
#ifndef GST_DISABLE_GST_DEBUG
gchar **walk = hacks;
while (*walk) {
GST_DEBUG ("Using hack: %s", *walk);
walk++;
}
#endif
videodec_class->hacks = gst_omx_parse_hacks (hacks);
}
}
static void
gst_omx_video_dec_class_init (GstOMXVideoDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseVideoDecoderClass *base_video_decoder_class =
GST_BASE_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);
base_video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_omx_video_dec_start);
base_video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_omx_video_dec_stop);
base_video_decoder_class->reset = GST_DEBUG_FUNCPTR (gst_omx_video_dec_reset);
base_video_decoder_class->set_format =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_set_format);
base_video_decoder_class->parse_data =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_parse_data);
base_video_decoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_handle_frame);
base_video_decoder_class->finish =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_finish);
klass->default_src_template_caps = "video/x-raw-yuv, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = " GST_VIDEO_FPS_RANGE;
}
static void
gst_omx_video_dec_init (GstOMXVideoDec * self, GstOMXVideoDecClass * klass)
{
GST_BASE_VIDEO_DECODER (self)->packetized = TRUE;
}
static gboolean
gst_omx_video_dec_open (GstOMXVideoDec * self)
{
GstOMXVideoDecClass *klass = GST_OMX_VIDEO_DEC_GET_CLASS (self);
self->component =
gst_omx_component_new (GST_OBJECT_CAST (self), klass->core_name,
klass->component_name, klass->component_role, klass->hacks);
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->in_port_index);
self->out_port =
gst_omx_component_add_port (self->component, klass->out_port_index);
if (!self->in_port || !self->out_port)
return FALSE;
return TRUE;
}
static gboolean
gst_omx_video_dec_close (GstOMXVideoDec * self)
{
OMX_STATETYPE state;
state = gst_omx_component_get_state (self->component, 0);
if (state > OMX_StateLoaded || state == OMX_StateInvalid) {
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);
}
self->in_port = NULL;
self->out_port = NULL;
if (self->component)
gst_omx_component_free (self->component);
self->component = NULL;
return TRUE;
}
static void
gst_omx_video_dec_finalize (GObject * object)
{
/* GstOMXVideoDec *self = GST_OMX_VIDEO_DEC (object); */
G_OBJECT_CLASS (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);
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);
break;
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret = GST_ELEMENT_CLASS (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:
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 GstVideoFrame *
_find_nearest_frame (GstOMXVideoDec * self, GstOMXBuffer * buf)
{
GList *l, *best_l = NULL;
GList *finish_frames = NULL;
GstVideoFrame *best = NULL;
guint64 best_timestamp = 0;
guint64 best_diff = G_MAXUINT64;
BufferIdentification *best_id = NULL;
GST_OBJECT_LOCK (self);
for (l = GST_BASE_VIDEO_CODEC (self)->frames; l; l = l->next) {
GstVideoFrame *tmp = l->data;
BufferIdentification *id = tmp->coder_hook;
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 = GST_BASE_VIDEO_CODEC (self)->frames; l && l != best_l; l = l->next) {
GstVideoFrame *tmp = l->data;
BufferIdentification *id = tmp->coder_hook;
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);
}
}
}
GST_OBJECT_UNLOCK (self);
if (finish_frames) {
g_warning ("Too old frames, bug in decoder -- please file a bug");
for (l = finish_frames; l; l = l->next) {
gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER (self),
l->data);
}
}
return best;
}
static gboolean
gst_omx_video_dec_fill_buffer (GstOMXVideoDec * self, GstOMXBuffer * inbuf,
GstBuffer * outbuf)
{
GstVideoState *state = &GST_BASE_VIDEO_CODEC (self)->state;
OMX_PARAM_PORTDEFINITIONTYPE *port_def = &self->out_port->port_def;
gboolean ret = FALSE;
if (state->width != port_def->format.video.nFrameWidth ||
state->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_SIZE (outbuf) == inbuf->omx_buf->nFilledLen) {
memcpy (GST_BUFFER_DATA (outbuf),
inbuf->omx_buf->pBuffer + inbuf->omx_buf->nOffset,
inbuf->omx_buf->nFilledLen);
ret = TRUE;
goto done;
}
/* Different strides */
switch (state->format) {
case GST_VIDEO_FORMAT_I420:{
gint i, j, height;
guint8 *src, *dest;
gint src_stride, dest_stride;
for (i = 0; i < 3; i++) {
if (i == 0) {
src_stride = port_def->format.video.nStride;
dest_stride =
gst_video_format_get_row_stride (state->format, 0, state->width);
} else {
src_stride = port_def->format.video.nStride / 2;
dest_stride =
gst_video_format_get_row_stride (state->format, 1, state->width);
}
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_BUFFER_DATA (outbuf) +
gst_video_format_get_component_offset (state->format, i,
state->width, state->height);
height =
gst_video_format_get_component_height (state->format, i,
state->height);
for (j = 0; j < height; j++) {
memcpy (dest, src, MIN (src_stride, dest_stride));
src += src_stride;
dest += dest_stride;
}
}
ret = TRUE;
break;
}
case GST_VIDEO_FORMAT_NV12:{
gint i, j, height;
guint8 *src, *dest;
gint src_stride, dest_stride;
for (i = 0; i < 2; i++) {
if (i == 0) {
src_stride = port_def->format.video.nStride;
dest_stride =
gst_video_format_get_row_stride (state->format, 0, state->width);
} else {
src_stride = port_def->format.video.nStride;
dest_stride =
gst_video_format_get_row_stride (state->format, 1, state->width);
}
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_BUFFER_DATA (outbuf) +
gst_video_format_get_component_offset (state->format, i,
state->width, state->height);
height =
gst_video_format_get_component_height (state->format, i,
state->height);
for (j = 0; j < height; j++) {
memcpy (dest, src, MIN (src_stride, dest_stride));
src += src_stride;
dest += dest_stride;
}
}
ret = TRUE;
break;
}
default:
GST_ERROR_OBJECT (self, "Unsupported format");
goto done;
break;
}
done:
if (ret) {
GST_BUFFER_TIMESTAMP (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);
}
return ret;
}
static void
gst_omx_video_dec_loop (GstOMXVideoDec * self)
{
GstOMXPort *port = self->out_port;
GstOMXBuffer *buf = NULL;
GstVideoFrame *frame;
GstFlowReturn flow_ret = GST_FLOW_OK;
GstOMXAcquireBufferReturn acq_return;
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_CAPS (GST_BASE_VIDEO_CODEC_SRC_PAD (self))
|| acq_return == GST_OMX_ACQUIRE_BUFFER_RECONFIGURED) {
GstVideoState *state = &GST_BASE_VIDEO_CODEC (self)->state;
OMX_PARAM_PORTDEFINITIONTYPE port_def;
GST_DEBUG_OBJECT (self, "Port settings have changed, updating caps");
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:
state->format = GST_VIDEO_FORMAT_I420;
break;
case OMX_COLOR_FormatYUV420SemiPlanar:
state->format = GST_VIDEO_FORMAT_NV12;
break;
default:
GST_ERROR_OBJECT (self, "Unsupported color format: %d",
port_def.format.video.eColorFormat);
goto caps_failed;
break;
}
state->width = port_def.format.video.nFrameWidth;
state->height = port_def.format.video.nFrameHeight;
/* FIXME XXX: Bellagio does not set this to something useful... */
/* gst_util_double_to_fraction (port_def.format.video.xFramerate / ((gdouble) 0xffff), &state->fps_n, &state->fps_d); */
if (!gst_base_video_decoder_set_src_caps (GST_BASE_VIDEO_DECODER (self))) {
if (buf)
gst_omx_port_release_buffer (self->out_port, buf);
goto caps_failed;
}
/* Now get a buffer */
if (acq_return != GST_OMX_ACQUIRE_BUFFER_OK)
return;
}
g_assert (acq_return == GST_OMX_ACQUIRE_BUFFER_OK && buf != NULL);
GST_DEBUG_OBJECT (self, "Handling buffer: 0x%08x %lu", buf->omx_buf->nFlags,
buf->omx_buf->nTimeStamp);
frame = _find_nearest_frame (self, buf);
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_base_video_decoder_alloc_src_buffer (GST_BASE_VIDEO_DECODER (self));
if (!gst_omx_video_dec_fill_buffer (self, buf, outbuf)) {
gst_buffer_unref (outbuf);
goto invalid_buffer;
}
} else if (buf->omx_buf->nFilledLen > 0) {
if (GST_BASE_VIDEO_CODEC (self)->state.bytes_per_picture == 0) {
/* FIXME: If the sinkpad caps change we have currently no way
* to allocate new src buffers because basevideodecoder assumes
* that the caps on both pads are equivalent all the time
*/
GST_WARNING_OBJECT (self,
"Caps change pending and still have buffers for old caps -- dropping");
} else
if (gst_base_video_decoder_alloc_src_frame (GST_BASE_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->src_buffer)) {
gst_buffer_replace (&frame->src_buffer, NULL);
gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER (self),
frame);
goto invalid_buffer;
}
}
flow_ret =
gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER (self),
frame);
} else if (frame != NULL) {
flow_ret =
gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER (self),
frame);
}
if (flow_ret == GST_FLOW_OK && (buf->omx_buf->nFlags & OMX_BUFFERFLAG_EOS))
flow_ret = GST_FLOW_UNEXPECTED;
gst_omx_port_release_buffer (port, buf);
if (flow_ret != GST_FLOW_OK)
goto flow_error;
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_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
return;
}
flushing:
{
GST_DEBUG_OBJECT (self, "Flushing -- stopping task");
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
return;
}
flow_error:
{
if (flow_ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (self, "EOS");
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
} else if (flow_ret == GST_FLOW_NOT_LINKED
|| flow_ret < GST_FLOW_UNEXPECTED) {
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_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
}
return;
}
reconfigure_error:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Unable to reconfigure output port"));
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
return;
}
invalid_buffer:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Invalid sized input buffer"));
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
return;
}
caps_failed:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL), ("Failed to set caps"));
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
return;
}
}
static gboolean
gst_omx_video_dec_start (GstBaseVideoDecoder * decoder)
{
GstOMXVideoDec *self;
gboolean ret;
self = GST_OMX_VIDEO_DEC (decoder);
ret =
gst_pad_start_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, self);
return ret;
}
static gboolean
gst_omx_video_dec_stop (GstBaseVideoDecoder * decoder)
{
GstOMXVideoDec *self;
self = GST_OMX_VIDEO_DEC (decoder);
gst_pad_stop_task (GST_BASE_VIDEO_CODEC_SRC_PAD (decoder));
if (gst_omx_component_get_state (self->component, 0) > OMX_StateIdle)
gst_omx_component_set_state (self->component, OMX_StateIdle);
gst_omx_port_set_flushing (self->in_port, TRUE);
gst_omx_port_set_flushing (self->out_port, TRUE);
gst_omx_component_get_state (self->component, 5 * GST_SECOND);
gst_buffer_replace (&self->codec_data, NULL);
return TRUE;
}
static gboolean
gst_omx_video_dec_set_format (GstBaseVideoDecoder * decoder,
GstVideoState * state)
{
GstOMXVideoDec *self;
GstOMXVideoDecClass *klass;
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 != state->width;
is_format_change |= port_def.format.video.nFrameHeight != state->height;
is_format_change |= (port_def.format.video.xFramerate == 0
&& state->fps_n != 0)
|| (port_def.format.video.xFramerate !=
(state->fps_n << 16) / (state->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");
return TRUE;
}
if (needs_disable && is_format_change) {
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;
}
port_def.format.video.nFrameWidth = state->width;
port_def.format.video.nFrameHeight = state->height;
if (state->fps_n == 0)
port_def.format.video.xFramerate = 0;
else
port_def.format.video.xFramerate = (state->fps_n << 16) / (state->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);
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;
}
/* 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 */
gst_pad_start_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, decoder);
return (gst_omx_component_get_state (self->component,
GST_CLOCK_TIME_NONE) == OMX_StateExecuting);
}
static gboolean
gst_omx_video_dec_reset (GstBaseVideoDecoder * decoder)
{
GstOMXVideoDec *self;
self = GST_OMX_VIDEO_DEC (decoder);
GST_DEBUG_OBJECT (self, "Resetting decoder");
/* FIXME: Workaround for
* https://bugzilla.gnome.org/show_bug.cgi?id=654529
*/
GST_OBJECT_LOCK (self);
g_list_foreach (GST_BASE_VIDEO_CODEC (self)->frames,
(GFunc) gst_base_video_codec_free_frame, NULL);
g_list_free (GST_BASE_VIDEO_CODEC (self)->frames);
GST_BASE_VIDEO_CODEC (self)->frames = NULL;
GST_OBJECT_UNLOCK (self);
if (self->started) {
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 */
GST_PAD_STREAM_LOCK (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
GST_PAD_STREAM_UNLOCK (GST_BASE_VIDEO_CODEC_SRC_PAD (self));
gst_omx_port_set_flushing (self->in_port, FALSE);
gst_omx_port_set_flushing (self->out_port, FALSE);
}
/* Start the srcpad loop again */
gst_pad_start_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self),
(GstTaskFunction) gst_omx_video_dec_loop, decoder);
return TRUE;
}
static GstFlowReturn
gst_omx_video_dec_parse_data (GstBaseVideoDecoder * decoder, gboolean at_eos)
{
return GST_FLOW_OK;
}
static GstFlowReturn
gst_omx_video_dec_handle_frame (GstBaseVideoDecoder * decoder,
GstVideoFrame * frame)
{
GstOMXAcquireBufferReturn acq_ret = GST_OMX_ACQUIRE_BUFFER_ERROR;
GstOMXVideoDec *self;
GstOMXBuffer *buf;
GstBuffer *codec_data = NULL;
guint offset = 0;
GstClockTime timestamp, duration, timestamp_offset = 0;
self = GST_OMX_VIDEO_DEC (decoder);
GST_DEBUG_OBJECT (self, "Handling frame");
timestamp = frame->presentation_timestamp;
duration = frame->presentation_duration;
while (offset < GST_BUFFER_SIZE (frame->sink_buffer)) {
acq_ret = gst_omx_port_acquire_buffer (self->in_port, &buf);
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 (self->codec_data) {
codec_data = self->codec_data;
if (buf->omx_buf->nAllocLen < GST_BUFFER_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_SIZE (codec_data);
memcpy (buf->omx_buf->pBuffer + buf->omx_buf->nOffset,
GST_BUFFER_DATA (codec_data), GST_BUFFER_SIZE (codec_data));
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 */
buf->omx_buf->nFilledLen =
MIN (GST_BUFFER_SIZE (frame->sink_buffer) - offset,
buf->omx_buf->nAllocLen - buf->omx_buf->nOffset);
memcpy (buf->omx_buf->pBuffer + buf->omx_buf->nOffset,
GST_BUFFER_DATA (frame->sink_buffer) + offset,
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_SIZE (frame->sink_buffer));
}
if (timestamp != GST_CLOCK_TIME_NONE) {
buf->omx_buf->nTimeStamp =
gst_util_uint64_scale (timestamp + timestamp_offset,
OMX_TICKS_PER_SECOND, GST_SECOND);
}
if (duration != GST_CLOCK_TIME_NONE) {
buf->omx_buf->nTickCount =
gst_util_uint64_scale (buf->omx_buf->nFilledLen, duration,
GST_BUFFER_SIZE (frame->sink_buffer));
}
if (offset == 0) {
BufferIdentification *id = g_slice_new0 (BufferIdentification);
if (!GST_BUFFER_FLAG_IS_SET (frame->sink_buffer,
GST_BUFFER_FLAG_DELTA_UNIT))
buf->omx_buf->nFlags |= OMX_BUFFERFLAG_SYNCFRAME;
id->timestamp = buf->omx_buf->nTimeStamp;
frame->coder_hook = id;
frame->coder_hook_destroy_notify =
(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 GST_FLOW_OK;
too_large_codec_data:
{
GST_ELEMENT_ERROR (self, STREAM, FORMAT, (NULL),
("codec_data larger than supported by OpenMAX port (%u > %u)",
GST_BUFFER_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 WRONG_STATE");
return GST_FLOW_WRONG_STATE;
}
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 (GstBaseVideoDecoder * decoder)
{
GstOMXVideoDec *self;
GstOMXBuffer *buf;
GstOMXAcquireBufferReturn acq_ret;
self = GST_OMX_VIDEO_DEC (decoder);
GST_DEBUG_OBJECT (self, "Sending EOS to the component");
/* 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) {
buf->omx_buf->nFlags |= OMX_BUFFERFLAG_EOS;
gst_omx_port_release_buffer (self->in_port, buf);
}
return GST_BASE_VIDEO_DECODER_FLOW_DROPPED;
}
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