/* * Copyright (C) 2011, Hewlett-Packard Development Company, L.P. * Author: Sebastian Dröge , 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 #include #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, GstVideoFrameState * frame); static GstFlowReturn gst_omx_video_dec_finish (GstBaseVideoDecoder * decoder); static GstFlowReturn gst_omx_video_dec_drain (GstOMXVideoDec * self); 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_BASE_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); 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->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_BASE_VIDEO_DECODER (self)->packetized = 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 GstVideoFrameState * _find_nearest_frame (GstOMXVideoDec * self, GstOMXBuffer * buf) { GList *l, *best_l = NULL; GList *finish_frames = NULL; GstVideoFrameState *best = NULL; guint64 best_timestamp = 0; guint64 best_diff = G_MAXUINT64; BufferIdentification *best_id = NULL; for (l = GST_BASE_VIDEO_CODEC (self)->frames; l; l = l->next) { GstVideoFrameState *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) { GstVideoFrameState *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); } } } 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; GstVideoInfo vinfo; GstVideoFrame frame; 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_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 */ gst_video_info_from_caps (&vinfo, state->caps); 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 = vinfo.stride[0]; /* 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 = vinfo.stride[1]; /* 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); gst_video_frame_map (&frame, &vinfo, outbuf, GST_MAP_WRITE); 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; for (i = 0; i < 2; i++) { if (i == 0) { src_stride = port_def->format.video.nStride; dest_stride = vinfo.stride[0]; /* 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 = vinfo.stride[1]; /* 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; gst_video_frame_map (&frame, &vinfo, outbuf, GST_MAP_WRITE); 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); } return ret; } static void gst_omx_video_dec_loop (GstOMXVideoDec * self) { GstOMXPort *port = self->out_port; GstOMXBuffer *buf = NULL; GstVideoFrameState *frame; GstFlowReturn flow_ret = GST_FLOW_OK; GstOMXAcquireBufferReturn acq_return; GstClockTimeDiff deadline; gboolean is_eos; 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_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_BASE_VIDEO_CODEC_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: 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); if (buf) gst_omx_port_release_buffer (self->out_port, buf); GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (self); goto caps_failed; break; } state->width = port_def.format.video.nFrameWidth; state->height = port_def.format.video.nFrameHeight; /* Take framerate and pixel-aspect-ratio from sinkpad caps */ if (!gst_base_video_decoder_set_src_caps (GST_BASE_VIDEO_DECODER (self))) { if (buf) gst_omx_port_release_buffer (self->out_port, buf); GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (self); goto caps_failed; } GST_BASE_VIDEO_CODEC_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 && buf != NULL); 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_BASE_VIDEO_CODEC_STREAM_LOCK (self); frame = _find_nearest_frame (self, buf); is_eos = ! !(buf->omx_buf->nFlags & OMX_BUFFERFLAG_EOS); if (frame && (deadline = gst_base_video_decoder_get_max_decode_time (GST_BASE_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_base_video_decoder_drop_frame (GST_BASE_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_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); gst_omx_port_release_buffer (self->out_port, buf); goto invalid_buffer; } flow_ret = gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (self), outbuf); } 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); flow_ret = gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER (self), frame); gst_omx_port_release_buffer (self->out_port, buf); 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 (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; if (flow_ret != GST_FLOW_OK) goto flow_error; GST_BASE_VIDEO_CODEC_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_BASE_VIDEO_CODEC_SRC_PAD (self), gst_event_new_eos ()); gst_pad_pause_task (GST_BASE_VIDEO_CODEC_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_BASE_VIDEO_CODEC_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_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_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_BASE_VIDEO_CODEC_SRC_PAD (self), gst_event_new_eos ()); gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self)); } self->started = FALSE; GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (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)); 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_BASE_VIDEO_CODEC_SRC_PAD (self), gst_event_new_eos ()); gst_pad_pause_task (GST_BASE_VIDEO_CODEC_SRC_PAD (self)); self->downstream_flow_ret = GST_FLOW_NOT_NEGOTIATED; self->started = FALSE; GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (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)); self->downstream_flow_ret = GST_FLOW_NOT_NEGOTIATED; self->started = FALSE; return; } } static gboolean gst_omx_video_dec_start (GstBaseVideoDecoder * 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_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_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_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); 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); GST_DEBUG_OBJECT (self, "Stopped decoder"); return TRUE; } static gboolean gst_omx_video_dec_negotiate (GstOMXVideoDec * self) { GstOMXPort *port = self->out_port; GstVideoState *state = &GST_BASE_VIDEO_CODEC (self)->state; 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_BASE_VIDEO_CODEC_SRC_PAD (self))); peer_caps = gst_pad_peer_query_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (self), templ_caps); if (peer_caps) { intersection = peer_caps; gst_caps_unref (templ_caps); } else { intersection = templ_caps; } GST_OMX_INIT_STRUCT (¶m); param.nPortIndex = port->index; param.nIndex = 0; if (state->fps_n == 0) param.xFramerate = 0; else param.xFramerate = (state->fps_n << 16) / (state->fps_d); old_index = -1; comp_supported_caps = gst_caps_new_empty (); do { err = gst_omx_component_get_parameter (self->component, OMX_IndexParamVideoPortFormat, ¶m); /* 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, ¶m); 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 (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) { gst_omx_video_dec_drain (self); if (klass->cdata.hacks & GST_OMX_HACK_NO_COMPONENT_RECONFIGURE) { GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (self); gst_omx_video_dec_stop (GST_BASE_VIDEO_DECODER (self)); gst_omx_video_dec_close (self); GST_BASE_VIDEO_CODEC_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; } } 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 (!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_BASE_VIDEO_CODEC_SRC_PAD (self), (GstTaskFunction) gst_omx_video_dec_loop, decoder); return TRUE; } static gboolean gst_omx_video_dec_reset (GstBaseVideoDecoder * decoder) { GstOMXVideoDec *self; self = GST_OMX_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Resetting decoder"); gst_omx_video_dec_drain (self); 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_BASE_VIDEO_CODEC_STREAM_LOCK to prevent deadlocks * caused by using this lock from inside the loop function */ GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (self); GST_PAD_STREAM_LOCK (GST_BASE_VIDEO_CODEC_SRC_PAD (self)); GST_PAD_STREAM_UNLOCK (GST_BASE_VIDEO_CODEC_SRC_PAD (self)); GST_BASE_VIDEO_CODEC_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_BASE_VIDEO_CODEC_SRC_PAD (self), (GstTaskFunction) gst_omx_video_dec_loop, decoder); GST_DEBUG_OBJECT (self, "Reset 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, GstVideoFrameState * 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->presentation_timestamp; duration = frame->presentation_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->sink_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_BASE_VIDEO_CODEC_STREAM_UNLOCK (self); acq_ret = gst_omx_port_acquire_buffer (self->in_port, &buf); GST_BASE_VIDEO_CODEC_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->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); 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->sink_buffer)); self->last_upstream_ts += duration; } 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 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 (GstBaseVideoDecoder * decoder) { GstOMXVideoDec *self; GstOMXBuffer *buf; GstOMXAcquireBufferReturn acq_ret; self = GST_OMX_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Sending EOS to the component"); /* Don't send EOS buffer twice, this doesn't work */ if (self->eos) { GST_DEBUG_OBJECT (self, "Component is already EOS"); return GST_BASE_VIDEO_DECODER_FLOW_DROPPED; } self->eos = TRUE; /* 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_BASE_VIDEO_CODEC_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) { 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, "Sent EOS to the component"); } else { GST_ERROR_OBJECT (self, "Failed to acquire buffer for EOS: %d", acq_ret); } GST_BASE_VIDEO_CODEC_STREAM_LOCK (self); return GST_BASE_VIDEO_DECODER_FLOW_DROPPED; } static GstFlowReturn gst_omx_video_dec_drain (GstOMXVideoDec * self) { GstOMXBuffer *buf; GstOMXAcquireBufferReturn acq_ret; GST_DEBUG_OBJECT (self, "Draining component"); 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; } /* 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_BASE_VIDEO_CODEC_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_BASE_VIDEO_CODEC_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"); g_cond_wait (self->drain_cond, self->drain_lock); GST_DEBUG_OBJECT (self, "Drained component"); g_mutex_unlock (self->drain_lock); GST_BASE_VIDEO_CODEC_STREAM_LOCK (self); self->started = FALSE; return GST_FLOW_OK; }