diff options
Diffstat (limited to 'gst-libs/gst/video/gstbasevideocodec.c')
| -rw-r--r-- | gst-libs/gst/video/gstbasevideocodec.c | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/gst-libs/gst/video/gstbasevideocodec.c b/gst-libs/gst/video/gstbasevideocodec.c new file mode 100644 index 000000000..9cddc3bf4 --- /dev/null +++ b/gst-libs/gst/video/gstbasevideocodec.c @@ -0,0 +1,565 @@ +/* Schrodinger + * Copyright (C) 2006 David Schleef <ds@schleef.org> + * + * 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 "gstbasevideocodec.h" + +#include <string.h> +#include <math.h> + +GST_DEBUG_CATEGORY (basevideo_debug); +#define GST_CAT_DEFAULT basevideo_debug + +/* GstBaseVideoCodec signals and args */ +enum +{ + LAST_SIGNAL +}; + +enum +{ + ARG_0 +}; + +static void gst_base_video_codec_finalize (GObject * object); + +static GstStateChangeReturn gst_base_video_codec_change_state (GstElement * + element, GstStateChange transition); + + +GST_BOILERPLATE (GstBaseVideoCodec, gst_base_video_codec, GstElement, + GST_TYPE_ELEMENT); + +static void +gst_base_video_codec_base_init (gpointer g_class) +{ + GST_DEBUG_CATEGORY_INIT (basevideo_debug, "basevideo", 0, + "Base Video Classes"); + +} + +static void +gst_base_video_codec_class_init (GstBaseVideoCodecClass * 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_codec_finalize; + + element_class->change_state = gst_base_video_codec_change_state; +} + +static void +gst_base_video_codec_init (GstBaseVideoCodec * base_video_codec, + GstBaseVideoCodecClass * klass) +{ + GstPadTemplate *pad_template; + + GST_DEBUG ("gst_base_video_codec_init"); + + pad_template = + gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "sink"); + g_return_if_fail (pad_template != NULL); + + base_video_codec->sinkpad = gst_pad_new_from_template (pad_template, "sink"); + gst_element_add_pad (GST_ELEMENT (base_video_codec), + base_video_codec->sinkpad); + + pad_template = + gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "src"); + g_return_if_fail (pad_template != NULL); + + base_video_codec->srcpad = gst_pad_new_from_template (pad_template, "src"); + gst_pad_use_fixed_caps (base_video_codec->srcpad); + gst_element_add_pad (GST_ELEMENT (base_video_codec), + base_video_codec->srcpad); + + base_video_codec->input_adapter = gst_adapter_new (); + base_video_codec->output_adapter = gst_adapter_new (); + +} + +static void +gst_base_video_codec_reset (GstBaseVideoCodec * base_video_codec) +{ + GST_DEBUG ("reset"); + + base_video_codec->system_frame_number = 0; + + gst_adapter_clear (base_video_codec->input_adapter); + gst_adapter_clear (base_video_codec->output_adapter); + +} + +static void +gst_base_video_codec_finalize (GObject * object) +{ + GstBaseVideoCodec *base_video_codec; + + g_return_if_fail (GST_IS_BASE_VIDEO_CODEC (object)); + base_video_codec = GST_BASE_VIDEO_CODEC (object); + + if (base_video_codec->input_adapter) { + g_object_unref (base_video_codec->input_adapter); + } + if (base_video_codec->output_adapter) { + g_object_unref (base_video_codec->output_adapter); + } + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +#ifdef unused +static const GstQueryType * +gst_base_video_codec_get_query_types (GstPad * pad) +{ + static const GstQueryType query_types[] = { + GST_QUERY_POSITION, + GST_QUERY_DURATION, + GST_QUERY_CONVERT, + 0 + }; + + return query_types; +} +#endif + +#if 0 +static gboolean +gst_base_video_codec_src_convert (GstPad * pad, + GstFormat src_format, gint64 src_value, + GstFormat * dest_format, gint64 * dest_value) +{ + gboolean res; + GstBaseVideoCodec *dec; + + if (src_format == *dest_format) { + *dest_value = src_value; + return TRUE; + } + + dec = GST_BASE_VIDEO_CODEC (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_codec_sink_convert (GstPad * pad, + GstFormat src_format, gint64 src_value, + GstFormat * dest_format, gint64 * dest_value) +{ + gboolean res = TRUE; + GstBaseVideoCodec *dec; + + if (src_format == *dest_format) { + *dest_value = src_value; + return TRUE; + } + + dec = GST_BASE_VIDEO_CODEC (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 + +#ifdef unused +static gboolean +gst_base_video_codec_src_query (GstPad * pad, GstQuery * query) +{ + GstBaseVideoCodec *base_codec; + gboolean res = FALSE; + + base_codec = GST_BASE_VIDEO_CODEC (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_codec->system_frame_number, + base_codec->state.fps_n, base_codec->state.fps_d); + time += base_codec->state.segment.time; + GST_DEBUG ("query position %lld", time); + res = gst_base_video_encoded_video_convert (&base_codec->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 (base_codec->sinkpad), query); + if (!res) + goto error; + break; + case GST_QUERY_CONVERT: + { + GstFormat src_fmt, dest_fmt; + gint64 src_val, dest_val; + + GST_DEBUG ("query convert"); + + gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); + res = gst_base_video_encoded_video_convert (&base_codec->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_codec); + + return res; +error: + GST_DEBUG_OBJECT (base_codec, "query failed"); + goto done; +} +#endif + +#ifdef unused +static gboolean +gst_base_video_codec_sink_query (GstPad * pad, GstQuery * query) +{ + GstBaseVideoCodec *base_video_codec; + gboolean res = FALSE; + + base_video_codec = GST_BASE_VIDEO_CODEC (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_codec->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_codec); + + return res; +error: + GST_DEBUG_OBJECT (base_video_codec, "query failed"); + goto done; +} +#endif + +#ifdef unused +static gboolean +gst_base_video_codec_src_event (GstPad * pad, GstEvent * event) +{ + GstBaseVideoCodec *base_video_codec; + gboolean res = FALSE; + + base_video_codec = GST_BASE_VIDEO_CODEC (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_codec->state, + format, cur, &tformat, &tcur); + if (!res) + goto convert_error; + res = gst_base_video_encoded_video_convert (&base_video_codec->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 (base_video_codec->sinkpad, 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_codec); + base_video_codec->proportion = proportion; + base_video_codec->earliest_time = timestamp + diff; + GST_OBJECT_UNLOCK (base_video_codec); + + GST_DEBUG_OBJECT (base_video_codec, + "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT, + GST_TIME_ARGS (timestamp), diff); + + res = gst_pad_push_event (base_video_codec->sinkpad, event); + break; + } +#endif + default: + res = gst_pad_push_event (base_video_codec->sinkpad, event); + break; + } +done: + gst_object_unref (base_video_codec); + return res; + +convert_error: + GST_DEBUG_OBJECT (base_video_codec, "could not convert format"); + goto done; +} +#endif + +#ifdef unused +static gboolean +gst_base_video_codec_sink_event (GstPad * pad, GstEvent * event) +{ + GstBaseVideoCodec *base_video_codec; + gboolean ret = FALSE; + + base_video_codec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad)); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_FLUSH_START: + ret = gst_pad_push_event (base_video_codec->srcpad, event); + break; + case GST_EVENT_FLUSH_STOP: + gst_base_video_codec_reset (base_video_codec); + ret = gst_pad_push_event (base_video_codec->srcpad, event); + break; + case GST_EVENT_EOS: + if (gst_base_video_codec_push_all (base_video_codec, + FALSE) == GST_FLOW_ERROR) { + gst_event_unref (event); + return FALSE; + } + + ret = gst_pad_push_event (base_video_codec->srcpad, 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_codec->state.segment, update, + rate, format, start, stop, time); + + ret = gst_pad_push_event (base_video_codec->srcpad, event); + break; + } + default: + ret = gst_pad_push_event (base_video_codec->srcpad, event); + break; + } +done: + gst_object_unref (base_video_codec); + return ret; + +newseg_wrong_format: + GST_DEBUG_OBJECT (base_video_codec, "received non TIME newsegment"); + gst_event_unref (event); + goto done; + +newseg_wrong_rate: + GST_DEBUG_OBJECT (base_video_codec, "negative rates not supported"); + gst_event_unref (event); + goto done; +} +#endif + + +static GstStateChangeReturn +gst_base_video_codec_change_state (GstElement * element, + GstStateChange transition) +{ + GstBaseVideoCodec *base_video_codec = GST_BASE_VIDEO_CODEC (element); + GstStateChangeReturn ret; + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + break; + case GST_STATE_CHANGE_READY_TO_PAUSED: + gst_base_video_codec_reset (base_video_codec); + break; + case GST_STATE_CHANGE_PAUSED_TO_PLAYING: + break; + default: + break; + } + + ret = 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_codec_reset (base_video_codec); + break; + case GST_STATE_CHANGE_READY_TO_NULL: + break; + default: + break; + } + + return ret; +} + +#if 0 +guint64 +gst_base_video_codec_get_timestamp (GstBaseVideoCodec * base_video_codec, + int picture_number) +{ + if (picture_number < 0) { + return base_video_codec->timestamp_offset - + (gint64) gst_util_uint64_scale (-picture_number, + base_video_codec->state.fps_d * GST_SECOND, + base_video_codec->state.fps_n); + } else { + return base_video_codec->timestamp_offset + + gst_util_uint64_scale (picture_number, + base_video_codec->state.fps_d * GST_SECOND, + base_video_codec->state.fps_n); + } +} +#endif + +GstVideoFrame * +gst_base_video_codec_new_frame (GstBaseVideoCodec * base_video_codec) +{ + GstVideoFrame *frame; + + frame = g_malloc0 (sizeof (GstVideoFrame)); + + frame->system_frame_number = base_video_codec->system_frame_number; + base_video_codec->system_frame_number++; + + return frame; +} + +void +gst_base_video_codec_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); +} |