/* * Initially based on gst-omx/omx/gstomxvideodec.c * * Copyright (C) 2011, Hewlett-Packard Development Company, L.P. * Author: Sebastian Dröge , Collabora Ltd. * * Copyright (C) 2012, Collabora Ltd. * Author: Sebastian Dröge * * Copyright (C) 2012, Rafaël Carré * * 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 #include #ifdef HAVE_ORC #include #else #define orc_memcpy memcpy #endif #include "gstamcvideodec.h" #include "gstamc-constants.h" GST_DEBUG_CATEGORY_STATIC (gst_amc_video_dec_debug_category); #define GST_CAT_DEFAULT gst_amc_video_dec_debug_category typedef struct _BufferIdentification BufferIdentification; struct _BufferIdentification { guint64 timestamp; }; static BufferIdentification * buffer_identification_new (GstClockTime timestamp) { BufferIdentification *id = g_slice_new (BufferIdentification); id->timestamp = timestamp; return id; } static void buffer_identification_free (BufferIdentification * id) { g_slice_free (BufferIdentification, id); } /* prototypes */ static void gst_amc_video_dec_finalize (GObject * object); static GstStateChangeReturn gst_amc_video_dec_change_state (GstElement * element, GstStateChange transition); static gboolean gst_amc_video_dec_open (GstVideoDecoder * decoder); static gboolean gst_amc_video_dec_close (GstVideoDecoder * decoder); static gboolean gst_amc_video_dec_start (GstVideoDecoder * decoder); static gboolean gst_amc_video_dec_stop (GstVideoDecoder * decoder); static gboolean gst_amc_video_dec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state); static gboolean gst_amc_video_dec_flush (GstVideoDecoder * decoder); static GstFlowReturn gst_amc_video_dec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame); static GstFlowReturn gst_amc_video_dec_finish (GstVideoDecoder * decoder); static gboolean gst_amc_video_dec_decide_allocation (GstVideoDecoder * bdec, GstQuery * query); static GstFlowReturn gst_amc_video_dec_drain (GstAmcVideoDec * self, gboolean at_eos); enum { PROP_0 }; /* class initialization */ static void gst_amc_video_dec_class_init (GstAmcVideoDecClass * klass); static void gst_amc_video_dec_init (GstAmcVideoDec * self); static void gst_amc_video_dec_base_init (gpointer g_class); static GstVideoDecoderClass *parent_class = NULL; GType gst_amc_video_dec_get_type (void) { static volatile gsize type = 0; if (g_once_init_enter (&type)) { GType _type; static const GTypeInfo info = { sizeof (GstAmcVideoDecClass), gst_amc_video_dec_base_init, NULL, (GClassInitFunc) gst_amc_video_dec_class_init, NULL, NULL, sizeof (GstAmcVideoDec), 0, (GInstanceInitFunc) gst_amc_video_dec_init, NULL }; _type = g_type_register_static (GST_TYPE_VIDEO_DECODER, "GstAmcVideoDec", &info, 0); GST_DEBUG_CATEGORY_INIT (gst_amc_video_dec_debug_category, "amcvideodec", 0, "Android MediaCodec video decoder"); g_once_init_leave (&type, _type); } return type; } static const gchar * caps_to_mime (GstCaps * caps) { GstStructure *s; const gchar *name; s = gst_caps_get_structure (caps, 0); if (!s) return NULL; name = gst_structure_get_name (s); if (strcmp (name, "video/mpeg") == 0) { gint mpegversion; if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) return NULL; if (mpegversion == 4) return "video/mp4v-es"; else if (mpegversion == 1 || mpegversion == 2) return "video/mpeg2"; } else if (strcmp (name, "video/x-h263") == 0) { return "video/3gpp"; } else if (strcmp (name, "video/x-h264") == 0) { return "video/avc"; } else if (strcmp (name, "video/x-vp8") == 0) { return "video/x-vnd.on2.vp8"; } else if (strcmp (name, "video/x-divx") == 0) { return "video/mp4v-es"; } return NULL; } static void gst_amc_video_dec_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstAmcVideoDecClass *amcvideodec_class = GST_AMC_VIDEO_DEC_CLASS (g_class); const GstAmcCodecInfo *codec_info; GstPadTemplate *templ; GstCaps *sink_caps, *src_caps; gchar *longname; codec_info = g_type_get_qdata (G_TYPE_FROM_CLASS (g_class), gst_amc_codec_info_quark); /* This happens for the base class and abstract subclasses */ if (!codec_info) return; amcvideodec_class->codec_info = codec_info; gst_amc_codec_info_to_caps (codec_info, &sink_caps, &src_caps); /* Add pad templates */ templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, sink_caps); gst_element_class_add_pad_template (element_class, templ); gst_caps_unref (sink_caps); templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, src_caps); gst_element_class_add_pad_template (element_class, templ); gst_caps_unref (src_caps); longname = g_strdup_printf ("Android MediaCodec %s", codec_info->name); gst_element_class_set_metadata (element_class, codec_info->name, "Codec/Decoder/Video", longname, "Sebastian Dröge "); g_free (longname); } static void gst_amc_video_dec_class_init (GstAmcVideoDecClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstVideoDecoderClass *videodec_class = GST_VIDEO_DECODER_CLASS (klass); parent_class = g_type_class_peek_parent (klass); gobject_class->finalize = gst_amc_video_dec_finalize; element_class->change_state = GST_DEBUG_FUNCPTR (gst_amc_video_dec_change_state); videodec_class->start = GST_DEBUG_FUNCPTR (gst_amc_video_dec_start); videodec_class->stop = GST_DEBUG_FUNCPTR (gst_amc_video_dec_stop); videodec_class->open = GST_DEBUG_FUNCPTR (gst_amc_video_dec_open); videodec_class->close = GST_DEBUG_FUNCPTR (gst_amc_video_dec_close); videodec_class->flush = GST_DEBUG_FUNCPTR (gst_amc_video_dec_flush); videodec_class->set_format = GST_DEBUG_FUNCPTR (gst_amc_video_dec_set_format); videodec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_amc_video_dec_handle_frame); videodec_class->finish = GST_DEBUG_FUNCPTR (gst_amc_video_dec_finish); videodec_class->decide_allocation = GST_DEBUG_FUNCPTR (gst_amc_video_dec_decide_allocation); } static void gst_amc_video_dec_init (GstAmcVideoDec * self) { gst_video_decoder_set_packetized (GST_VIDEO_DECODER (self), TRUE); gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (self), TRUE); g_mutex_init (&self->drain_lock); g_cond_init (&self->drain_cond); } static gboolean gst_amc_video_dec_open (GstVideoDecoder * decoder) { GstAmcVideoDec *self = GST_AMC_VIDEO_DEC (decoder); GstAmcVideoDecClass *klass = GST_AMC_VIDEO_DEC_GET_CLASS (self); GST_DEBUG_OBJECT (self, "Opening decoder"); self->codec = gst_amc_codec_new (klass->codec_info->name); if (!self->codec) return FALSE; self->started = FALSE; self->flushing = TRUE; GST_DEBUG_OBJECT (self, "Opened decoder"); return TRUE; } static gboolean gst_amc_video_dec_close (GstVideoDecoder * decoder) { GstAmcVideoDec *self = GST_AMC_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Closing decoder"); if (self->codec) gst_amc_codec_free (self->codec); self->codec = NULL; self->started = FALSE; self->flushing = TRUE; GST_DEBUG_OBJECT (self, "Closed decoder"); return TRUE; } static void gst_amc_video_dec_finalize (GObject * object) { GstAmcVideoDec *self = GST_AMC_VIDEO_DEC (object); g_mutex_clear (&self->drain_lock); g_cond_clear (&self->drain_cond); G_OBJECT_CLASS (parent_class)->finalize (object); } static GstStateChangeReturn gst_amc_video_dec_change_state (GstElement * element, GstStateChange transition) { GstAmcVideoDec *self; GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; g_return_val_if_fail (GST_IS_AMC_VIDEO_DEC (element), GST_STATE_CHANGE_FAILURE); self = GST_AMC_VIDEO_DEC (element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: break; case GST_STATE_CHANGE_READY_TO_PAUSED: 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: self->flushing = TRUE; gst_amc_codec_flush (self->codec); 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 (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; break; case GST_STATE_CHANGE_READY_TO_NULL: break; default: break; } return ret; } #define MAX_FRAME_DIST_TIME (5 * GST_SECOND) #define MAX_FRAME_DIST_FRAMES (100) static GstVideoCodecFrame * _find_nearest_frame (GstAmcVideoDec * self, GstClockTime reference_timestamp) { 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 > reference_timestamp) diff = timestamp - reference_timestamp; else diff = reference_timestamp - 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 ((reference_timestamp == 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_time, diff_frames; if (id->timestamp > best_timestamp) break; if (id->timestamp == 0 || best_timestamp == 0) diff_time = 0; else diff_time = best_timestamp - id->timestamp; diff_frames = best->system_frame_number - tmp->system_frame_number; if (diff_time > MAX_FRAME_DIST_TIME || diff_frames > MAX_FRAME_DIST_FRAMES) { finish_frames = g_list_prepend (finish_frames, gst_video_codec_frame_ref (tmp)); } } } if (finish_frames) { g_warning ("%s: Too old frames, bug in decoder -- please file a bug", GST_ELEMENT_NAME (self)); for (l = finish_frames; l; l = l->next) { gst_video_decoder_drop_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_amc_video_dec_set_src_caps (GstAmcVideoDec * self, GstAmcFormat * format) { GstVideoCodecState *output_state; const gchar *mime; gint color_format, width, height; gint stride, slice_height; gint crop_left, crop_right; gint crop_top, crop_bottom; GstVideoFormat gst_format; GstAmcVideoDecClass *klass = GST_AMC_VIDEO_DEC_GET_CLASS (self); if (!gst_amc_format_get_int (format, "color-format", &color_format) || !gst_amc_format_get_int (format, "width", &width) || !gst_amc_format_get_int (format, "height", &height)) { GST_ERROR_OBJECT (self, "Failed to get output format metadata"); return FALSE; } if (!gst_amc_format_get_int (format, "stride", &stride) || !gst_amc_format_get_int (format, "slice-height", &slice_height)) { GST_ERROR_OBJECT (self, "Failed to get stride and slice-height"); return FALSE; } if (!gst_amc_format_get_int (format, "crop-left", &crop_left) || !gst_amc_format_get_int (format, "crop-right", &crop_right) || !gst_amc_format_get_int (format, "crop-top", &crop_top) || !gst_amc_format_get_int (format, "crop-bottom", &crop_bottom)) { GST_ERROR_OBJECT (self, "Failed to get crop rectangle"); return FALSE; } if (width == 0 || height == 0) { GST_ERROR_OBJECT (self, "Height or width not set"); return FALSE; } if (crop_bottom) height = height - (height - crop_bottom - 1); if (crop_top) height = height - crop_top; if (crop_right) width = width - (width - crop_right - 1); if (crop_left) width = width - crop_left; mime = caps_to_mime (self->input_state->caps); if (!mime) { GST_ERROR_OBJECT (self, "Failed to convert caps to mime"); return FALSE; } gst_format = gst_amc_color_format_to_video_format (klass->codec_info, mime, color_format); if (gst_format == GST_VIDEO_FORMAT_UNKNOWN) { GST_ERROR_OBJECT (self, "Unknown color format 0x%08x", color_format); return FALSE; } output_state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self), gst_format, width, height, self->input_state); self->format = gst_format; if (!gst_amc_color_format_info_set (&self->color_format_info, klass->codec_info, mime, color_format, width, height, stride, slice_height, crop_left, crop_right, crop_top, crop_bottom)) { GST_ERROR_OBJECT (self, "Failed to set up GstAmcColorFormatInfo"); return FALSE; } GST_DEBUG_OBJECT (self, "Color format info: {color_format=%d, width=%d, height=%d, " "stride=%d, slice-height=%d, crop-left=%d, crop-top=%d, " "crop-right=%d, crop-bottom=%d, frame-size=%d}", self->color_format_info.color_format, self->color_format_info.width, self->color_format_info.height, self->color_format_info.stride, self->color_format_info.slice_height, self->color_format_info.crop_left, self->color_format_info.crop_top, self->color_format_info.crop_right, self->color_format_info.crop_bottom, self->color_format_info.frame_size); gst_video_decoder_negotiate (GST_VIDEO_DECODER (self)); gst_video_codec_state_unref (output_state); self->input_state_changed = FALSE; return TRUE; } static gboolean gst_amc_video_dec_fill_buffer (GstAmcVideoDec * self, gint idx, const GstAmcBufferInfo * buffer_info, GstBuffer * outbuf) { GstAmcBuffer *buf; GstVideoCodecState *state = gst_video_decoder_get_output_state (GST_VIDEO_DECODER (self)); GstVideoInfo *info = &state->info; gboolean ret = FALSE; if (idx >= self->n_output_buffers) { GST_ERROR_OBJECT (self, "Invalid output buffer index %d of %d", idx, self->n_output_buffers); goto done; } buf = &self->output_buffers[idx]; ret = gst_amc_color_format_copy (&self->color_format_info, buf, buffer_info, info, outbuf, COLOR_FORMAT_COPY_OUT); done: gst_video_codec_state_unref (state); return ret; } static void gst_amc_video_dec_loop (GstAmcVideoDec * self) { GstVideoCodecFrame *frame; GstFlowReturn flow_ret = GST_FLOW_OK; GstClockTimeDiff deadline; gboolean is_eos; GstAmcBufferInfo buffer_info; gint idx; GST_VIDEO_DECODER_STREAM_LOCK (self); retry: /*if (self->input_state_changed) { idx = INFO_OUTPUT_FORMAT_CHANGED; } else { */ GST_DEBUG_OBJECT (self, "Waiting for available output buffer"); GST_VIDEO_DECODER_STREAM_UNLOCK (self); /* Wait at most 100ms here, some codecs don't fail dequeueing if * the codec is flushing, causing deadlocks during shutdown */ idx = gst_amc_codec_dequeue_output_buffer (self->codec, &buffer_info, 100000); GST_VIDEO_DECODER_STREAM_LOCK (self); /*} */ if (idx < 0) { if (self->flushing || self->downstream_flow_ret == GST_FLOW_FLUSHING) goto flushing; switch (idx) { case INFO_OUTPUT_BUFFERS_CHANGED:{ GST_DEBUG_OBJECT (self, "Output buffers have changed"); if (self->output_buffers) gst_amc_codec_free_buffers (self->output_buffers, self->n_output_buffers); self->output_buffers = gst_amc_codec_get_output_buffers (self->codec, &self->n_output_buffers); if (!self->output_buffers) goto get_output_buffers_error; break; } case INFO_OUTPUT_FORMAT_CHANGED:{ GstAmcFormat *format; gchar *format_string; GST_DEBUG_OBJECT (self, "Output format has changed"); format = gst_amc_codec_get_output_format (self->codec); if (!format) goto format_error; format_string = gst_amc_format_to_string (format); GST_DEBUG_OBJECT (self, "Got new output format: %s", format_string); g_free (format_string); if (!gst_amc_video_dec_set_src_caps (self, format)) { gst_amc_format_free (format); goto format_error; } gst_amc_format_free (format); if (self->output_buffers) gst_amc_codec_free_buffers (self->output_buffers, self->n_output_buffers); self->output_buffers = gst_amc_codec_get_output_buffers (self->codec, &self->n_output_buffers); if (!self->output_buffers) goto get_output_buffers_error; goto retry; break; } case INFO_TRY_AGAIN_LATER: GST_DEBUG_OBJECT (self, "Dequeueing output buffer timed out"); goto retry; break; case G_MININT: GST_ERROR_OBJECT (self, "Failure dequeueing input buffer"); goto dequeue_error; break; default: g_assert_not_reached (); break; } goto retry; } GST_DEBUG_OBJECT (self, "Got output buffer at index %d: size %d time %" G_GINT64_FORMAT " flags 0x%08x", idx, buffer_info.size, buffer_info.presentation_time_us, buffer_info.flags); frame = _find_nearest_frame (self, gst_util_uint64_scale (buffer_info.presentation_time_us, GST_USECOND, 1)); is_eos = !!(buffer_info.flags & BUFFER_FLAG_END_OF_STREAM); 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 && buffer_info.size > 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_amc_video_dec_fill_buffer (self, idx, &buffer_info, outbuf)) { gst_buffer_unref (outbuf); if (!gst_amc_codec_release_output_buffer (self->codec, idx)) GST_ERROR_OBJECT (self, "Failed to release output buffer index %d", idx); goto invalid_buffer; } GST_BUFFER_PTS (outbuf) = gst_util_uint64_scale (buffer_info.presentation_time_us, GST_USECOND, 1); flow_ret = gst_pad_push (GST_VIDEO_DECODER_SRC_PAD (self), outbuf); } else if (buffer_info.size > 0) { if ((flow_ret = gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (self), frame)) != GST_FLOW_OK) { GST_ERROR_OBJECT (self, "Failed to allocate buffer"); if (!gst_amc_codec_release_output_buffer (self->codec, idx)) GST_ERROR_OBJECT (self, "Failed to release output buffer index %d", idx); goto flow_error; } if (!gst_amc_video_dec_fill_buffer (self, idx, &buffer_info, frame->output_buffer)) { gst_buffer_replace (&frame->output_buffer, NULL); gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame); if (!gst_amc_codec_release_output_buffer (self->codec, idx)) GST_ERROR_OBJECT (self, "Failed to release output buffer index %d", idx); goto invalid_buffer; } flow_ret = gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame); } else if (frame != NULL) { flow_ret = gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame); } if (!gst_amc_codec_release_output_buffer (self->codec, idx)) goto failed_release; if (is_eos || flow_ret == GST_FLOW_EOS) { GST_VIDEO_DECODER_STREAM_UNLOCK (self); 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); GST_VIDEO_DECODER_STREAM_LOCK (self); } else { GST_DEBUG_OBJECT (self, "Finished frame: %s", gst_flow_get_name (flow_ret)); } self->downstream_flow_ret = flow_ret; if (flow_ret != GST_FLOW_OK) goto flow_error; GST_VIDEO_DECODER_STREAM_UNLOCK (self); return; dequeue_error: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to dequeue output 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_ERROR; GST_VIDEO_DECODER_STREAM_UNLOCK (self); return; } get_output_buffers_error: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to get output buffers")); 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; GST_VIDEO_DECODER_STREAM_UNLOCK (self); return; } format_error: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to handle format")); 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; GST_VIDEO_DECODER_STREAM_UNLOCK (self); return; } failed_release: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to release output buffer index %d", idx)); 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; GST_VIDEO_DECODER_STREAM_UNLOCK (self); 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; GST_VIDEO_DECODER_STREAM_UNLOCK (self); 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_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)); } else if (flow_ret == GST_FLOW_FLUSHING) { GST_DEBUG_OBJECT (self, "Flushing -- stopping task"); gst_pad_pause_task (GST_VIDEO_DECODER_SRC_PAD (self)); } GST_VIDEO_DECODER_STREAM_UNLOCK (self); 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; GST_VIDEO_DECODER_STREAM_UNLOCK (self); return; } } static gboolean gst_amc_video_dec_start (GstVideoDecoder * decoder) { GstAmcVideoDec *self; self = GST_AMC_VIDEO_DEC (decoder); self->last_upstream_ts = 0; self->eos = FALSE; self->downstream_flow_ret = GST_FLOW_OK; self->started = FALSE; self->flushing = TRUE; return TRUE; } static gboolean gst_amc_video_dec_stop (GstVideoDecoder * decoder) { GstAmcVideoDec *self; self = GST_AMC_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Stopping decoder"); self->flushing = TRUE; if (self->started) { gst_amc_codec_flush (self->codec); gst_amc_codec_stop (self->codec); self->started = FALSE; if (self->input_buffers) gst_amc_codec_free_buffers (self->input_buffers, self->n_input_buffers); self->input_buffers = NULL; if (self->output_buffers) gst_amc_codec_free_buffers (self->output_buffers, self->n_output_buffers); self->output_buffers = NULL; } gst_pad_stop_task (GST_VIDEO_DECODER_SRC_PAD (decoder)); self->downstream_flow_ret = GST_FLOW_FLUSHING; self->eos = FALSE; g_mutex_lock (&self->drain_lock); self->draining = FALSE; g_cond_broadcast (&self->drain_cond); g_mutex_unlock (&self->drain_lock); g_free (self->codec_data); self->codec_data_size = 0; 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_amc_video_dec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state) { GstAmcVideoDec *self; GstAmcFormat *format; const gchar *mime; gboolean is_format_change = FALSE; gboolean needs_disable = FALSE; gchar *format_string; guint8 *codec_data = NULL; gsize codec_data_size = 0; self = GST_AMC_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Setting new caps %" GST_PTR_FORMAT, state->caps); /* 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 |= self->color_format_info.width != state->info.width; is_format_change |= self->color_format_info.height != state->info.height; if (state->codec_data) { GstMapInfo cminfo; gst_buffer_map (state->codec_data, &cminfo, GST_MAP_READ); codec_data = g_memdup (cminfo.data, cminfo.size); codec_data_size = cminfo.size; is_format_change |= (!self->codec_data || self->codec_data_size != codec_data_size || memcmp (self->codec_data, codec_data, codec_data_size) != 0); gst_buffer_unmap (state->codec_data, &cminfo); } else if (self->codec_data) { is_format_change |= TRUE; } needs_disable = self->started; /* If the component is not started and a real format change happens * we have to restart the component. If no real format change * happened we can just exit here. */ if (needs_disable && !is_format_change) { g_free (codec_data); codec_data = NULL; codec_data_size = 0; /* Framerate or something minor changed */ self->input_state_changed = TRUE; if (self->input_state) gst_video_codec_state_unref (self->input_state); self->input_state = gst_video_codec_state_ref (state); GST_DEBUG_OBJECT (self, "Already running and caps did not change the format"); return TRUE; } if (needs_disable && is_format_change) { gst_amc_video_dec_drain (self, FALSE); GST_VIDEO_DECODER_STREAM_UNLOCK (self); gst_amc_video_dec_stop (GST_VIDEO_DECODER (self)); GST_VIDEO_DECODER_STREAM_LOCK (self); gst_amc_video_dec_close (GST_VIDEO_DECODER (self)); if (!gst_amc_video_dec_open (GST_VIDEO_DECODER (self))) { GST_ERROR_OBJECT (self, "Failed to open codec again"); return FALSE; } if (!gst_amc_video_dec_start (GST_VIDEO_DECODER (self))) { GST_ERROR_OBJECT (self, "Failed to start codec again"); } } /* srcpad task is not running at this point */ if (self->input_state) gst_video_codec_state_unref (self->input_state); self->input_state = NULL; g_free (self->codec_data); self->codec_data = codec_data; self->codec_data_size = codec_data_size; mime = caps_to_mime (state->caps); if (!mime) { GST_ERROR_OBJECT (self, "Failed to convert caps to mime"); return FALSE; } format = gst_amc_format_new_video (mime, state->info.width, state->info.height); if (!format) { GST_ERROR_OBJECT (self, "Failed to create video format"); return FALSE; } /* FIXME: This buffer needs to be valid until the codec is stopped again */ if (self->codec_data) gst_amc_format_set_buffer (format, "csd-0", self->codec_data, self->codec_data_size); format_string = gst_amc_format_to_string (format); GST_DEBUG_OBJECT (self, "Configuring codec with format: %s", format_string); g_free (format_string); if (!gst_amc_codec_configure (self->codec, format, 0)) { GST_ERROR_OBJECT (self, "Failed to configure codec"); return FALSE; } gst_amc_format_free (format); if (!gst_amc_codec_start (self->codec)) { GST_ERROR_OBJECT (self, "Failed to start codec"); return FALSE; } if (self->input_buffers) gst_amc_codec_free_buffers (self->input_buffers, self->n_input_buffers); self->input_buffers = gst_amc_codec_get_input_buffers (self->codec, &self->n_input_buffers); if (!self->input_buffers) { GST_ERROR_OBJECT (self, "Failed to get input buffers"); return FALSE; } self->started = TRUE; self->input_state = gst_video_codec_state_ref (state); self->input_state_changed = TRUE; /* Start the srcpad loop again */ self->flushing = FALSE; self->downstream_flow_ret = GST_FLOW_OK; gst_pad_start_task (GST_VIDEO_DECODER_SRC_PAD (self), (GstTaskFunction) gst_amc_video_dec_loop, decoder, NULL); return TRUE; } static gboolean gst_amc_video_dec_flush (GstVideoDecoder * decoder) { GstAmcVideoDec *self; self = GST_AMC_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Flushing decoder"); if (!self->started) { GST_DEBUG_OBJECT (self, "Codec not started yet"); return TRUE; } self->flushing = 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_amc_codec_flush (self->codec); self->flushing = 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_amc_video_dec_loop, decoder, NULL); GST_DEBUG_OBJECT (self, "Flushed decoder"); return TRUE; } static GstFlowReturn gst_amc_video_dec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame) { GstAmcVideoDec *self; gint idx; GstAmcBuffer *buf; GstAmcBufferInfo buffer_info; guint offset = 0; GstClockTime timestamp, duration, timestamp_offset = 0; GstMapInfo minfo; memset (&minfo, 0, sizeof (minfo)); self = GST_AMC_VIDEO_DEC (decoder); GST_DEBUG_OBJECT (self, "Handling frame"); if (!self->started) { GST_ERROR_OBJECT (self, "Codec not started yet"); gst_video_codec_frame_unref (frame); return GST_FLOW_NOT_NEGOTIATED; } if (self->eos) { GST_WARNING_OBJECT (self, "Got frame after EOS"); gst_video_codec_frame_unref (frame); return GST_FLOW_EOS; } if (self->flushing) goto flushing; if (self->downstream_flow_ret != GST_FLOW_OK) goto downstream_error; timestamp = frame->pts; duration = frame->duration; gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ); while (offset < minfo.size) { /* 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); /* Wait at most 100ms here, some codecs don't fail dequeueing if * the codec is flushing, causing deadlocks during shutdown */ idx = gst_amc_codec_dequeue_input_buffer (self->codec, 100000); GST_VIDEO_DECODER_STREAM_LOCK (self); if (idx < 0) { if (self->flushing) goto flushing; switch (idx) { case INFO_TRY_AGAIN_LATER: GST_DEBUG_OBJECT (self, "Dequeueing input buffer timed out"); continue; /* next try */ break; case G_MININT: GST_ERROR_OBJECT (self, "Failed to dequeue input buffer"); goto dequeue_error; default: g_assert_not_reached (); break; } continue; } if (idx >= self->n_input_buffers) goto invalid_buffer_index; if (self->flushing) goto flushing; if (self->downstream_flow_ret != GST_FLOW_OK) { memset (&buffer_info, 0, sizeof (buffer_info)); gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info); goto downstream_error; } /* Now handle the frame */ /* Copy the buffer content in chunks of size as requested * by the port */ buf = &self->input_buffers[idx]; memset (&buffer_info, 0, sizeof (buffer_info)); buffer_info.offset = 0; buffer_info.size = MIN (minfo.size - offset, buf->size); orc_memcpy (buf->data, minfo.data + offset, buffer_info.size); /* 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, minfo.size); } if (timestamp != GST_CLOCK_TIME_NONE) { buffer_info.presentation_time_us = gst_util_uint64_scale (timestamp + timestamp_offset, 1, GST_USECOND); self->last_upstream_ts = timestamp + timestamp_offset; } if (duration != GST_CLOCK_TIME_NONE) self->last_upstream_ts += duration; if (offset == 0) { BufferIdentification *id = buffer_identification_new (timestamp + timestamp_offset); if (GST_VIDEO_CODEC_FRAME_IS_SYNC_POINT (frame)) buffer_info.flags |= BUFFER_FLAG_SYNC_FRAME; gst_video_codec_frame_set_user_data (frame, id, (GDestroyNotify) buffer_identification_free); } offset += buffer_info.size; GST_DEBUG_OBJECT (self, "Queueing buffer %d: size %d time %" G_GINT64_FORMAT " flags 0x%08x", idx, buffer_info.size, buffer_info.presentation_time_us, buffer_info.flags); if (!gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info)) goto queue_error; } gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return self->downstream_flow_ret; downstream_error: { GST_ERROR_OBJECT (self, "Downstream returned %s", gst_flow_get_name (self->downstream_flow_ret)); if (minfo.data) gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return self->downstream_flow_ret; } invalid_buffer_index: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Invalid input buffer index %d of %d", idx, self->n_input_buffers)); if (minfo.data) gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return GST_FLOW_ERROR; } dequeue_error: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to dequeue input buffer")); if (minfo.data) gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return GST_FLOW_ERROR; } queue_error: { GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL), ("Failed to queue input buffer")); if (minfo.data) gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return GST_FLOW_ERROR; } flushing: { GST_DEBUG_OBJECT (self, "Flushing -- returning FLUSHING"); if (minfo.data) gst_buffer_unmap (frame->input_buffer, &minfo); gst_video_codec_frame_unref (frame); return GST_FLOW_FLUSHING; } } static GstFlowReturn gst_amc_video_dec_finish (GstVideoDecoder * decoder) { GstAmcVideoDec *self; self = GST_AMC_VIDEO_DEC (decoder); return gst_amc_video_dec_drain (self, TRUE); } static GstFlowReturn gst_amc_video_dec_drain (GstAmcVideoDec * self, gboolean at_eos) { GstFlowReturn ret; gint idx; GST_DEBUG_OBJECT (self, "Draining codec"); if (!self->started) { GST_DEBUG_OBJECT (self, "Codec not started yet"); return GST_FLOW_OK; } /* Don't send EOS buffer twice, this doesn't work */ if (self->eos) { GST_DEBUG_OBJECT (self, "Codec is EOS already"); return GST_FLOW_OK; } if (at_eos) 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_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. * Wait at most 0.5s here. */ idx = gst_amc_codec_dequeue_input_buffer (self->codec, 500000); GST_VIDEO_DECODER_STREAM_LOCK (self); if (idx >= 0 && idx < self->n_input_buffers) { GstAmcBufferInfo buffer_info; GST_VIDEO_DECODER_STREAM_UNLOCK (self); g_mutex_lock (&self->drain_lock); self->draining = TRUE; memset (&buffer_info, 0, sizeof (buffer_info)); buffer_info.size = 0; buffer_info.presentation_time_us = gst_util_uint64_scale (self->last_upstream_ts, 1, GST_USECOND); buffer_info.flags |= BUFFER_FLAG_END_OF_STREAM; if (gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info)) { GST_DEBUG_OBJECT (self, "Waiting until codec is drained"); g_cond_wait (&self->drain_cond, &self->drain_lock); GST_DEBUG_OBJECT (self, "Drained codec"); ret = GST_FLOW_OK; } else { GST_ERROR_OBJECT (self, "Failed to queue input buffer"); ret = GST_FLOW_ERROR; } g_mutex_unlock (&self->drain_lock); GST_VIDEO_DECODER_STREAM_LOCK (self); } else if (idx >= self->n_input_buffers) { GST_ERROR_OBJECT (self, "Invalid input buffer index %d of %d", idx, self->n_input_buffers); ret = GST_FLOW_ERROR; } else { GST_ERROR_OBJECT (self, "Failed to acquire buffer for EOS: %d", idx); ret = GST_FLOW_ERROR; } return ret; } static gboolean gst_amc_video_dec_decide_allocation (GstVideoDecoder * bdec, GstQuery * query) { GstBufferPool *pool; GstStructure *config; if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (bdec, query)) return FALSE; g_assert (gst_query_get_n_allocation_pools (query) > 0); gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL); g_assert (pool != NULL); config = gst_buffer_pool_get_config (pool); if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) { gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); } gst_buffer_pool_set_config (pool, config); gst_object_unref (pool); return TRUE; }