/* Schrodinger * Copyright (C) 2006 David Schleef * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstbasevideoparse.h" #include #include GST_DEBUG_CATEGORY_EXTERN (basevideo_debug); #define GST_CAT_DEFAULT basevideo_debug /* GstBaseVideoParse signals and args */ enum { LAST_SIGNAL }; enum { ARG_0 }; static void gst_base_video_parse_finalize (GObject * object); static const GstQueryType *gst_base_video_parse_get_query_types (GstPad * pad); static gboolean gst_base_video_parse_src_query (GstPad * pad, GstQuery * query); static gboolean gst_base_video_parse_sink_query (GstPad * pad, GstQuery * query); static gboolean gst_base_video_parse_src_event (GstPad * pad, GstEvent * event); static gboolean gst_base_video_parse_sink_event (GstPad * pad, GstEvent * event); static GstStateChangeReturn gst_base_video_parse_change_state (GstElement * element, GstStateChange transition); static GstFlowReturn gst_base_video_parse_push_all (GstBaseVideoParse * base_video_parse, gboolean at_eos); static GstFlowReturn gst_base_video_parse_chain (GstPad * pad, GstBuffer * buf); static void gst_base_video_parse_free_frame (GstVideoFrame * frame); static GstVideoFrame *gst_base_video_parse_new_frame (GstBaseVideoParse * base_video_parse); GST_BOILERPLATE (GstBaseVideoParse, gst_base_video_parse, GstBaseVideoCodec, GST_TYPE_BASE_VIDEO_CODEC); static void gst_base_video_parse_base_init (gpointer g_class) { } static void gst_base_video_parse_class_init (GstBaseVideoParseClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; gobject_class = G_OBJECT_CLASS (klass); element_class = GST_ELEMENT_CLASS (klass); gobject_class->finalize = gst_base_video_parse_finalize; element_class->change_state = gst_base_video_parse_change_state; } static void gst_base_video_parse_init (GstBaseVideoParse * base_video_parse, GstBaseVideoParseClass * klass) { GstPad *pad; GST_DEBUG ("gst_base_video_parse_init"); pad = GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse); gst_pad_set_chain_function (pad, gst_base_video_parse_chain); gst_pad_set_query_function (pad, gst_base_video_parse_sink_query); gst_pad_set_event_function (pad, gst_base_video_parse_sink_event); pad = GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse); gst_pad_set_query_type_function (pad, gst_base_video_parse_get_query_types); gst_pad_set_query_function (pad, gst_base_video_parse_src_query); gst_pad_set_event_function (pad, gst_base_video_parse_src_event); base_video_parse->input_adapter = gst_adapter_new (); base_video_parse->output_adapter = gst_adapter_new (); base_video_parse->reorder_depth = 1; base_video_parse->current_frame = gst_base_video_parse_new_frame (base_video_parse); } static void gst_base_video_parse_reset (GstBaseVideoParse * base_video_parse) { GST_DEBUG ("reset"); base_video_parse->discont = TRUE; base_video_parse->have_sync = FALSE; base_video_parse->system_frame_number = 0; base_video_parse->presentation_frame_number = 0; if (base_video_parse->caps) { gst_caps_unref (base_video_parse->caps); base_video_parse->caps = NULL; } gst_segment_init (&base_video_parse->segment, GST_FORMAT_TIME); gst_adapter_clear (base_video_parse->input_adapter); gst_adapter_clear (base_video_parse->output_adapter); if (base_video_parse->current_frame) { gst_base_video_parse_free_frame (base_video_parse->current_frame); } base_video_parse->current_frame = gst_base_video_parse_new_frame (base_video_parse); } static void gst_base_video_parse_finalize (GObject * object) { GstBaseVideoParse *base_video_parse; g_return_if_fail (GST_IS_BASE_VIDEO_PARSE (object)); base_video_parse = GST_BASE_VIDEO_PARSE (object); if (base_video_parse->input_adapter) { g_object_unref (base_video_parse->input_adapter); } if (base_video_parse->output_adapter) { g_object_unref (base_video_parse->output_adapter); } G_OBJECT_CLASS (parent_class)->finalize (object); } static const GstQueryType * gst_base_video_parse_get_query_types (GstPad * pad) { static const GstQueryType query_types[] = { GST_QUERY_POSITION, GST_QUERY_DURATION, GST_QUERY_CONVERT, 0 }; return query_types; } #if 0 static gboolean gst_base_video_parse_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value, GstFormat * dest_format, gint64 * dest_value) { gboolean res; GstBaseVideoParse *dec; if (src_format == *dest_format) { *dest_value = src_value; return TRUE; } dec = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); if (src_format == GST_FORMAT_DEFAULT && *dest_format == GST_FORMAT_TIME) { if (dec->fps_d != 0) { *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value), dec->fps_d * GST_SECOND, dec->fps_n); res = TRUE; } else { res = FALSE; } } else { GST_WARNING ("unhandled conversion from %d to %d", src_format, *dest_format); res = FALSE; } gst_object_unref (dec); return res; } static gboolean gst_base_video_parse_sink_convert (GstPad * pad, GstFormat src_format, gint64 src_value, GstFormat * dest_format, gint64 * dest_value) { gboolean res = TRUE; GstBaseVideoParse *dec; if (src_format == *dest_format) { *dest_value = src_value; return TRUE; } dec = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); /* FIXME: check if we are in a decoding state */ switch (src_format) { case GST_FORMAT_DEFAULT: switch (*dest_format) { case GST_FORMAT_TIME: *dest_value = gst_util_uint64_scale (src_value, dec->fps_d * GST_SECOND, dec->fps_n); break; default: res = FALSE; } break; case GST_FORMAT_TIME: switch (*dest_format) { case GST_FORMAT_DEFAULT: { *dest_value = gst_util_uint64_scale (src_value, dec->fps_n, dec->fps_d * GST_SECOND); break; } default: res = FALSE; break; } break; default: res = FALSE; break; } gst_object_unref (dec); return res; } #endif static gboolean gst_base_video_parse_src_query (GstPad * pad, GstQuery * query) { GstBaseVideoParse *base_parse; gboolean res = FALSE; base_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_POSITION: { GstFormat format; gint64 time; gint64 value; gst_query_parse_position (query, &format, NULL); time = gst_util_uint64_scale (base_parse->presentation_frame_number, base_parse->state.fps_n, base_parse->state.fps_d); time += base_parse->segment.time; GST_DEBUG ("query position %lld", time); res = gst_base_video_encoded_video_convert (&base_parse->state, GST_FORMAT_TIME, time, &format, &value); if (!res) goto error; gst_query_set_position (query, format, value); break; } case GST_QUERY_DURATION: res = gst_pad_query (GST_PAD_PEER (GST_BASE_VIDEO_CODEC_SINK_PAD (base_parse)), query); if (!res) goto error; break; case GST_QUERY_CONVERT: { GstFormat src_fmt, dest_fmt; gint64 src_val, dest_val; GST_WARNING ("query convert"); gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); res = gst_base_video_encoded_video_convert (&base_parse->state, src_fmt, src_val, &dest_fmt, &dest_val); if (!res) goto error; gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); break; } default: res = gst_pad_query_default (pad, query); break; } done: gst_object_unref (base_parse); return res; error: GST_DEBUG_OBJECT (base_parse, "query failed"); goto done; } static gboolean gst_base_video_parse_sink_query (GstPad * pad, GstQuery * query) { GstBaseVideoParse *base_video_parse; gboolean res = FALSE; base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONVERT: { GstFormat src_fmt, dest_fmt; gint64 src_val, dest_val; gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); res = gst_base_video_encoded_video_convert (&base_video_parse->state, src_fmt, src_val, &dest_fmt, &dest_val); if (!res) goto error; gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); break; } default: res = gst_pad_query_default (pad, query); break; } done: gst_object_unref (base_video_parse); return res; error: GST_DEBUG_OBJECT (base_video_parse, "query failed"); goto done; } static gboolean gst_base_video_parse_src_event (GstPad * pad, GstEvent * event) { GstBaseVideoParse *base_video_parse; gboolean res = FALSE; base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: { GstFormat format, tformat; gdouble rate; GstEvent *real_seek; GstSeekFlags flags; GstSeekType cur_type, stop_type; gint64 cur, stop; gint64 tcur, tstop; gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop); gst_event_unref (event); tformat = GST_FORMAT_TIME; res = gst_base_video_encoded_video_convert (&base_video_parse->state, format, cur, &tformat, &tcur); if (!res) goto convert_error; res = gst_base_video_encoded_video_convert (&base_video_parse->state, format, stop, &tformat, &tstop); if (!res) goto convert_error; real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME, flags, cur_type, tcur, stop_type, tstop); res = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse), real_seek); break; } #if 0 case GST_EVENT_QOS: { gdouble proportion; GstClockTimeDiff diff; GstClockTime timestamp; gst_event_parse_qos (event, &proportion, &diff, ×tamp); GST_OBJECT_LOCK (base_video_parse); base_video_parse->proportion = proportion; base_video_parse->earliest_time = timestamp + diff; GST_OBJECT_UNLOCK (base_video_parse); GST_DEBUG_OBJECT (base_video_parse, "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT, GST_TIME_ARGS (timestamp), diff); res = gst_pad_push_event (base_video_parse->sinkpad, event); break; } #endif default: res = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse), event); break; } done: gst_object_unref (base_video_parse); return res; convert_error: GST_DEBUG_OBJECT (base_video_parse, "could not convert format"); goto done; } static gboolean gst_base_video_parse_sink_event (GstPad * pad, GstEvent * event) { GstBaseVideoParse *base_video_parse; gboolean ret = FALSE; base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_FLUSH_START: ret = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), event); break; case GST_EVENT_FLUSH_STOP: gst_base_video_parse_reset (base_video_parse); ret = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), event); break; case GST_EVENT_EOS: if (gst_base_video_parse_push_all (base_video_parse, FALSE) == GST_FLOW_ERROR) { gst_event_unref (event); return FALSE; } ret = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), event); break; case GST_EVENT_NEWSEGMENT: { gboolean update; GstFormat format; gdouble rate; gint64 start, stop, time; gst_event_parse_new_segment (event, &update, &rate, &format, &start, &stop, &time); if (format != GST_FORMAT_TIME) goto newseg_wrong_format; if (rate <= 0.0) goto newseg_wrong_rate; GST_DEBUG ("newsegment %lld %lld", start, time); gst_segment_set_newsegment (&base_video_parse->segment, update, rate, format, start, stop, time); ret = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), event); break; } default: ret = gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), event); break; } done: gst_object_unref (base_video_parse); return ret; newseg_wrong_format: GST_DEBUG_OBJECT (base_video_parse, "received non TIME newsegment"); gst_event_unref (event); goto done; newseg_wrong_rate: GST_DEBUG_OBJECT (base_video_parse, "negative rates not supported"); gst_event_unref (event); goto done; } static GstStateChangeReturn gst_base_video_parse_change_state (GstElement * element, GstStateChange transition) { GstBaseVideoParse *base_parse = GST_BASE_VIDEO_PARSE (element); GstStateChangeReturn ret; switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: break; case GST_STATE_CHANGE_READY_TO_PAUSED: gst_base_video_parse_reset (base_parse); break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING: break; default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PLAYING_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_READY: gst_base_video_parse_reset (base_parse); break; case GST_STATE_CHANGE_READY_TO_NULL: break; default: break; } return ret; } static guint64 gst_base_video_parse_get_timestamp (GstBaseVideoParse * base_video_parse, int picture_number) { if (picture_number < 0) { return base_video_parse->timestamp_offset - (gint64) gst_util_uint64_scale (-picture_number, base_video_parse->state.fps_d * GST_SECOND, base_video_parse->state.fps_n); } else { return base_video_parse->timestamp_offset + gst_util_uint64_scale (picture_number, base_video_parse->state.fps_d * GST_SECOND, base_video_parse->state.fps_n); } } static GstFlowReturn gst_base_video_parse_push_all (GstBaseVideoParse * base_video_parse, gboolean at_eos) { GstFlowReturn ret = GST_FLOW_OK; /* FIXME do stuff */ return ret; } static GstFlowReturn gst_base_video_parse_chain (GstPad * pad, GstBuffer * buf) { GstBaseVideoParse *base_video_parse; GstBaseVideoParseClass *klass; GstBuffer *buffer; GstFlowReturn ret; GST_DEBUG ("chain with %d bytes", GST_BUFFER_SIZE (buf)); base_video_parse = GST_BASE_VIDEO_PARSE (GST_PAD_PARENT (pad)); klass = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse); if (!base_video_parse->started) { klass->start (base_video_parse); base_video_parse->started = TRUE; } if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) { GST_DEBUG_OBJECT (base_video_parse, "received DISCONT buffer"); gst_base_video_parse_reset (base_video_parse); base_video_parse->discont = TRUE; base_video_parse->have_sync = FALSE; } if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) { base_video_parse->last_timestamp = GST_BUFFER_TIMESTAMP (buf); } gst_adapter_push (base_video_parse->input_adapter, buf); if (!base_video_parse->have_sync) { int n, m; GST_DEBUG ("no sync, scanning"); n = gst_adapter_available (base_video_parse->input_adapter); m = klass->scan_for_sync (base_video_parse->input_adapter, FALSE, 0, n); gst_adapter_flush (base_video_parse->input_adapter, m); if (m < n) { GST_DEBUG ("found possible sync after %d bytes (of %d)", m, n); /* this is only "maybe" sync */ base_video_parse->have_sync = TRUE; } if (!base_video_parse->have_sync) { return GST_FLOW_OK; } } buffer = gst_adapter_get_buffer (base_video_parse->input_adapter); //base_video_parse->buffer_timestamp = GST_BUFFER_TIMESTAMP (buffer); gst_buffer_unref (buffer); /* FIXME check klass->parse_data */ do { ret = klass->parse_data (base_video_parse, FALSE); } while (ret == GST_FLOW_OK); if (ret == GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA) { return GST_FLOW_OK; } return ret; } GstVideoState * gst_base_video_parse_get_state (GstBaseVideoParse * base_video_parse) { return &base_video_parse->state; } void gst_base_video_parse_set_state (GstBaseVideoParse * base_video_parse, GstVideoState * state) { GST_DEBUG ("set_state"); memcpy (&base_video_parse->state, state, sizeof (GstVideoState)); /* FIXME set caps */ } gboolean gst_base_video_parse_set_src_caps (GstBaseVideoParse * base_video_parse, GstCaps * caps) { g_return_val_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse), FALSE); GST_DEBUG ("set_src_caps"); return gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), caps); } void gst_base_video_parse_lost_sync (GstBaseVideoParse * base_video_parse) { g_return_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse)); GST_DEBUG ("lost_sync"); if (gst_adapter_available (base_video_parse->input_adapter) >= 1) { gst_adapter_flush (base_video_parse->input_adapter, 1); } base_video_parse->have_sync = FALSE; } GstVideoFrame * gst_base_video_parse_get_frame (GstBaseVideoParse * base_video_parse) { g_return_val_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse), NULL); return base_video_parse->current_frame; } void gst_base_video_parse_add_to_frame (GstBaseVideoParse * base_video_parse, int n_bytes) { GstBuffer *buf; GST_DEBUG ("add_to_frame"); buf = gst_adapter_take_buffer (base_video_parse->input_adapter, n_bytes); gst_adapter_push (base_video_parse->output_adapter, buf); } GstFlowReturn gst_base_video_parse_finish_frame (GstBaseVideoParse * base_video_parse) { GstVideoFrame *frame = base_video_parse->current_frame; GstBuffer *buffer; GstBaseVideoParseClass *base_video_parse_class; GstFlowReturn ret; GST_DEBUG ("finish_frame"); base_video_parse_class = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse); buffer = gst_adapter_take_buffer (base_video_parse->output_adapter, gst_adapter_available (base_video_parse->output_adapter)); if (frame->is_sync_point) { base_video_parse->timestamp_offset = base_video_parse->last_timestamp - gst_util_uint64_scale (frame->presentation_frame_number, base_video_parse->state.fps_d * GST_SECOND, base_video_parse->state.fps_n); base_video_parse->distance_from_sync = 0; } frame->distance_from_sync = base_video_parse->distance_from_sync; base_video_parse->distance_from_sync++; frame->presentation_timestamp = gst_base_video_parse_get_timestamp (base_video_parse, frame->presentation_frame_number); frame->presentation_duration = gst_base_video_parse_get_timestamp (base_video_parse, frame->presentation_frame_number + 1) - frame->presentation_timestamp; frame->decode_timestamp = gst_base_video_parse_get_timestamp (base_video_parse, frame->decode_frame_number); GST_BUFFER_TIMESTAMP (buffer) = frame->presentation_timestamp; GST_BUFFER_DURATION (buffer) = frame->presentation_duration; if (frame->decode_frame_number < 0) { GST_BUFFER_OFFSET (buffer) = 0; } else { GST_BUFFER_OFFSET (buffer) = frame->decode_timestamp; } GST_BUFFER_OFFSET_END (buffer) = GST_CLOCK_TIME_NONE; GST_DEBUG ("pts %" GST_TIME_FORMAT, GST_TIME_ARGS (frame->presentation_timestamp)); GST_DEBUG ("dts %" GST_TIME_FORMAT, GST_TIME_ARGS (frame->decode_timestamp)); GST_DEBUG ("dist %d", frame->distance_from_sync); if (frame->is_sync_point) { GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT); } else { GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT); } frame->src_buffer = buffer; ret = base_video_parse_class->shape_output (base_video_parse, frame); gst_base_video_parse_free_frame (base_video_parse->current_frame); /* create new frame */ base_video_parse->current_frame = gst_base_video_parse_new_frame (base_video_parse); return ret; } static void gst_base_video_parse_free_frame (GstVideoFrame * frame) { if (frame->sink_buffer) { gst_buffer_unref (frame->sink_buffer); } #if 0 if (frame->src_buffer) { gst_buffer_unref (frame->src_buffer); } #endif g_free (frame); } static GstVideoFrame * gst_base_video_parse_new_frame (GstBaseVideoParse * base_video_parse) { GstVideoFrame *frame; frame = g_malloc0 (sizeof (GstVideoFrame)); frame->system_frame_number = base_video_parse->system_frame_number; base_video_parse->system_frame_number++; frame->decode_frame_number = frame->system_frame_number - base_video_parse->reorder_depth; return frame; } void gst_base_video_parse_set_sync_point (GstBaseVideoParse * base_video_parse) { GST_DEBUG ("set_sync_point"); base_video_parse->current_frame->is_sync_point = TRUE; base_video_parse->distance_from_sync = 0; } GstFlowReturn gst_base_video_parse_push (GstBaseVideoParse * base_video_parse, GstBuffer * buffer) { GstBaseVideoParseClass *base_video_parse_class; base_video_parse_class = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse); if (base_video_parse->caps == NULL) { gboolean ret; base_video_parse->caps = base_video_parse_class->get_caps (base_video_parse); ret = gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), base_video_parse->caps); if (!ret) { GST_WARNING ("pad didn't accept caps"); return GST_FLOW_ERROR; } } gst_buffer_set_caps (buffer, base_video_parse->caps); GST_DEBUG ("pushing ts=%lld dur=%lld off=%lld off_end=%lld", GST_BUFFER_TIMESTAMP (buffer), GST_BUFFER_DURATION (buffer), GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer)); if (base_video_parse->discont) { GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); base_video_parse->discont = FALSE; } else { GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT); } return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), buffer); }