diff options
Diffstat (limited to 'gst-libs/gst/video/gstbasevideodecoder.c')
| -rw-r--r-- | gst-libs/gst/video/gstbasevideodecoder.c | 1173 |
1 files changed, 1173 insertions, 0 deletions
diff --git a/gst-libs/gst/video/gstbasevideodecoder.c b/gst-libs/gst/video/gstbasevideodecoder.c new file mode 100644 index 00000000..9aa79eee --- /dev/null +++ b/gst-libs/gst/video/gstbasevideodecoder.c @@ -0,0 +1,1173 @@ +/* GStreamer + * Copyright (C) 2008 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 "gstbasevideodecoder.h" + +#include <string.h> + +GST_DEBUG_CATEGORY_EXTERN (basevideo_debug); +#define GST_CAT_DEFAULT basevideo_debug + +static void gst_base_video_decoder_finalize (GObject * object); + +static gboolean gst_base_video_decoder_sink_setcaps (GstPad * pad, + GstCaps * caps); +static gboolean gst_base_video_decoder_sink_event (GstPad * pad, + GstEvent * event); +static gboolean gst_base_video_decoder_src_event (GstPad * pad, + GstEvent * event); +static GstFlowReturn gst_base_video_decoder_chain (GstPad * pad, + GstBuffer * buf); +static gboolean gst_base_video_decoder_sink_query (GstPad * pad, + GstQuery * query); +static GstStateChangeReturn gst_base_video_decoder_change_state (GstElement * + element, GstStateChange transition); +static const GstQueryType *gst_base_video_decoder_get_query_types (GstPad * + pad); +static gboolean gst_base_video_decoder_src_query (GstPad * pad, + GstQuery * query); +static gboolean gst_base_video_decoder_src_convert (GstPad * pad, + GstFormat src_format, gint64 src_value, GstFormat * dest_format, + gint64 * dest_value); +static void gst_base_video_decoder_reset (GstBaseVideoDecoder * + base_video_decoder); + +static guint64 +gst_base_video_decoder_get_timestamp (GstBaseVideoDecoder * base_video_decoder, + int picture_number); +static guint64 +gst_base_video_decoder_get_field_timestamp (GstBaseVideoDecoder * + base_video_decoder, int field_offset); +static GstVideoFrame *gst_base_video_decoder_new_frame (GstBaseVideoDecoder * + base_video_decoder); +static void gst_base_video_decoder_free_frame (GstVideoFrame * frame); + +GST_BOILERPLATE (GstBaseVideoDecoder, gst_base_video_decoder, + GstBaseVideoCodec, GST_TYPE_BASE_VIDEO_CODEC); + +static void +gst_base_video_decoder_base_init (gpointer g_class) +{ + +} + +static void +gst_base_video_decoder_class_init (GstBaseVideoDecoderClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = G_OBJECT_CLASS (klass); + gstelement_class = GST_ELEMENT_CLASS (klass); + + gobject_class->finalize = gst_base_video_decoder_finalize; + + gstelement_class->change_state = gst_base_video_decoder_change_state; + + parent_class = g_type_class_peek_parent (klass); +} + +static void +gst_base_video_decoder_init (GstBaseVideoDecoder * base_video_decoder, + GstBaseVideoDecoderClass * klass) +{ + GstPad *pad; + + GST_DEBUG ("gst_base_video_decoder_init"); + + pad = GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_decoder); + + gst_pad_set_chain_function (pad, gst_base_video_decoder_chain); + gst_pad_set_event_function (pad, gst_base_video_decoder_sink_event); + gst_pad_set_setcaps_function (pad, gst_base_video_decoder_sink_setcaps); + gst_pad_set_query_function (pad, gst_base_video_decoder_sink_query); + + pad = GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder); + + gst_pad_set_event_function (pad, gst_base_video_decoder_src_event); + gst_pad_set_query_type_function (pad, gst_base_video_decoder_get_query_types); + gst_pad_set_query_function (pad, gst_base_video_decoder_src_query); + + base_video_decoder->input_adapter = gst_adapter_new (); + base_video_decoder->output_adapter = gst_adapter_new (); + + gst_segment_init (&base_video_decoder->state.segment, GST_FORMAT_TIME); + gst_base_video_decoder_reset (base_video_decoder); + + base_video_decoder->current_frame = + gst_base_video_decoder_new_frame (base_video_decoder); + + base_video_decoder->sink_clipping = TRUE; +} + +static gboolean +gst_base_video_decoder_sink_setcaps (GstPad * pad, GstCaps * caps) +{ + GstBaseVideoDecoder *base_video_decoder; + GstBaseVideoDecoderClass *base_video_decoder_class; + GstStructure *structure; + const GValue *codec_data; + + base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + base_video_decoder_class = + GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + GST_DEBUG ("setcaps %" GST_PTR_FORMAT, caps); + + if (base_video_decoder->codec_data) { + gst_buffer_unref (base_video_decoder->codec_data); + base_video_decoder->codec_data = NULL; + } + + structure = gst_caps_get_structure (caps, 0); + + codec_data = gst_structure_get_value (structure, "codec_data"); + if (codec_data && G_VALUE_TYPE (codec_data) == GST_TYPE_BUFFER) { + base_video_decoder->codec_data = gst_value_get_buffer (codec_data); + } + + if (base_video_decoder_class->start) { + base_video_decoder_class->start (base_video_decoder); + } + + g_object_unref (base_video_decoder); + + return TRUE; +} + +static void +gst_base_video_decoder_finalize (GObject * object) +{ + GstBaseVideoDecoder *base_video_decoder; + GstBaseVideoDecoderClass *base_video_decoder_class; + + g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (object)); + base_video_decoder = GST_BASE_VIDEO_DECODER (object); + base_video_decoder_class = GST_BASE_VIDEO_DECODER_GET_CLASS (object); + + gst_base_video_decoder_reset (base_video_decoder); + + GST_DEBUG_OBJECT (object, "finalize"); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static gboolean +gst_base_video_decoder_sink_event (GstPad * pad, GstEvent * event) +{ + GstBaseVideoDecoder *base_video_decoder; + GstBaseVideoDecoderClass *base_video_decoder_class; + gboolean ret = FALSE; + + base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + base_video_decoder_class = + GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_EOS: + { + GstVideoFrame *frame; + + frame = g_malloc0 (sizeof (GstVideoFrame)); + frame->presentation_frame_number = + base_video_decoder->presentation_frame_number; + frame->presentation_duration = 0; + base_video_decoder->presentation_frame_number++; + + base_video_decoder->frames = + g_list_append (base_video_decoder->frames, frame); + if (base_video_decoder_class->finish) { + base_video_decoder_class->finish (base_video_decoder, frame); + } + + ret = + gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), + event); + } + break; + case GST_EVENT_NEWSEGMENT: + { + gboolean update; + double rate; + double applied_rate; + GstFormat format; + gint64 start; + gint64 stop; + gint64 position; + + gst_event_parse_new_segment_full (event, &update, &rate, + &applied_rate, &format, &start, &stop, &position); + + if (format != GST_FORMAT_TIME) + goto newseg_wrong_format; + + GST_DEBUG ("new segment %lld %lld", start, position); + + gst_segment_set_newsegment_full (&base_video_decoder->state.segment, + update, rate, applied_rate, format, start, stop, position); + + ret = + gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), + event); + } + break; + default: + /* FIXME this changes the order of events */ + ret = + gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), + event); + break; + } + +done: + gst_object_unref (base_video_decoder); + return ret; + +newseg_wrong_format: + { + GST_DEBUG_OBJECT (base_video_decoder, "received non TIME newsegment"); + gst_event_unref (event); + goto done; + } +} + +static gboolean +gst_base_video_decoder_src_event (GstPad * pad, GstEvent * event) +{ + GstBaseVideoDecoder *base_video_decoder; + gboolean res = FALSE; + + base_video_decoder = GST_BASE_VIDEO_DECODER (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_decoder_src_convert (pad, format, cur, &tformat, + &tcur); + if (!res) + goto convert_error; + res = + gst_base_video_decoder_src_convert (pad, 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_decoder), real_seek); + + break; + } + case GST_EVENT_QOS: + { + gdouble proportion; + GstClockTimeDiff diff; + GstClockTime timestamp; + + gst_event_parse_qos (event, &proportion, &diff, ×tamp); + + GST_OBJECT_LOCK (base_video_decoder); + base_video_decoder->proportion = proportion; + base_video_decoder->earliest_time = timestamp + diff; + GST_OBJECT_UNLOCK (base_video_decoder); + + GST_DEBUG_OBJECT (base_video_decoder, + "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT ", %g", + GST_TIME_ARGS (timestamp), diff, proportion); + + res = + gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD + (base_video_decoder), event); + break; + } + default: + res = + gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD + (base_video_decoder), event); + break; + } +done: + gst_object_unref (base_video_decoder); + return res; + +convert_error: + GST_DEBUG_OBJECT (base_video_decoder, "could not convert format"); + goto done; +} + + +#if 0 +static gboolean +gst_base_video_decoder_sink_convert (GstPad * pad, + GstFormat src_format, gint64 src_value, + GstFormat * dest_format, gint64 * dest_value) +{ + gboolean res = TRUE; + GstBaseVideoDecoder *enc; + + if (src_format == *dest_format) { + *dest_value = src_value; + return TRUE; + } + + enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + + /* FIXME: check if we are in a decoding state */ + + switch (src_format) { + case GST_FORMAT_BYTES: + switch (*dest_format) { +#if 0 + case GST_FORMAT_DEFAULT: + *dest_value = gst_util_uint64_scale_int (src_value, 1, + enc->bytes_per_picture); + break; +#endif + case GST_FORMAT_TIME: + /* seems like a rather silly conversion, implement me if you like */ + default: + res = FALSE; + } + break; + case GST_FORMAT_DEFAULT: + switch (*dest_format) { + case GST_FORMAT_TIME: + *dest_value = gst_util_uint64_scale (src_value, + GST_SECOND * enc->fps_d, enc->fps_n); + break; +#if 0 + case GST_FORMAT_BYTES: + *dest_value = gst_util_uint64_scale_int (src_value, + enc->bytes_per_picture, 1); + break; +#endif + default: + res = FALSE; + } + break; + default: + res = FALSE; + break; + } +} +#endif + +static gboolean +gst_base_video_decoder_src_convert (GstPad * pad, + GstFormat src_format, gint64 src_value, + GstFormat * dest_format, gint64 * dest_value) +{ + gboolean res = TRUE; + GstBaseVideoDecoder *enc; + + if (src_format == *dest_format) { + *dest_value = src_value; + return TRUE; + } + + enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + + /* FIXME: check if we are in a encoding state */ + + GST_DEBUG ("src convert"); + switch (src_format) { +#if 0 + case GST_FORMAT_DEFAULT: + switch (*dest_format) { + case GST_FORMAT_TIME: + *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value), + enc->fps_d * GST_SECOND, enc->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, + enc->fps_n, enc->fps_d * GST_SECOND); + break; + } + default: + res = FALSE; + break; + } + break; +#endif + default: + res = FALSE; + break; + } + + gst_object_unref (enc); + + return res; +} + +static const GstQueryType * +gst_base_video_decoder_get_query_types (GstPad * pad) +{ + static const GstQueryType query_types[] = { + GST_QUERY_CONVERT, + 0 + }; + + return query_types; +} + +static gboolean +gst_base_video_decoder_src_query (GstPad * pad, GstQuery * query) +{ + GstBaseVideoDecoder *enc; + gboolean res; + + enc = GST_BASE_VIDEO_DECODER (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_decoder_src_convert (pad, 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); + } + gst_object_unref (enc); + return res; + +error: + GST_DEBUG_OBJECT (enc, "query failed"); + gst_object_unref (enc); + return res; +} + +static gboolean +gst_base_video_decoder_sink_query (GstPad * pad, GstQuery * query) +{ + GstBaseVideoDecoder *base_video_decoder; + gboolean res = FALSE; + + base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + + GST_DEBUG_OBJECT (base_video_decoder, "sink query fps=%d/%d", + base_video_decoder->state.fps_n, base_video_decoder->state.fps_d); + 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_rawvideo_convert (&base_video_decoder->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_decoder); + + return res; +error: + GST_DEBUG_OBJECT (base_video_decoder, "query failed"); + goto done; +} + + +#if 0 +static gboolean +gst_pad_is_negotiated (GstPad * pad) +{ + GstCaps *caps; + + g_return_val_if_fail (pad != NULL, FALSE); + + caps = gst_pad_get_negotiated_caps (pad); + if (caps) { + gst_caps_unref (caps); + return TRUE; + } + + return FALSE; +} +#endif + +static void +gst_base_video_decoder_reset (GstBaseVideoDecoder * base_video_decoder) +{ + GstBaseVideoDecoderClass *base_video_decoder_class; + GList *g; + + base_video_decoder_class = + GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + GST_DEBUG ("reset"); + + base_video_decoder->started = FALSE; + + base_video_decoder->discont = TRUE; + base_video_decoder->have_sync = FALSE; + + base_video_decoder->timestamp_offset = GST_CLOCK_TIME_NONE; + base_video_decoder->system_frame_number = 0; + base_video_decoder->presentation_frame_number = 0; + base_video_decoder->last_sink_timestamp = GST_CLOCK_TIME_NONE; + base_video_decoder->last_sink_offset_end = GST_CLOCK_TIME_NONE; + base_video_decoder->base_picture_number = 0; + base_video_decoder->last_timestamp = GST_CLOCK_TIME_NONE; + + base_video_decoder->offset = 0; + + if (base_video_decoder->caps) { + gst_caps_unref (base_video_decoder->caps); + base_video_decoder->caps = NULL; + } + + if (base_video_decoder->current_frame) { + gst_base_video_decoder_free_frame (base_video_decoder->current_frame); + base_video_decoder->current_frame = NULL; + } + + base_video_decoder->have_src_caps = FALSE; + + for (g = g_list_first (base_video_decoder->frames); g; g = g_list_next (g)) { + GstVideoFrame *frame = g->data; + gst_base_video_decoder_free_frame (frame); + } + g_list_free (base_video_decoder->frames); + base_video_decoder->frames = NULL; + + if (base_video_decoder_class->reset) { + base_video_decoder_class->reset (base_video_decoder); + } +} + +static GstBuffer * +gst_adapter_get_buffer (GstAdapter * adapter) +{ + return gst_buffer_ref (GST_BUFFER (adapter->buflist->data)); + +} + +static GstFlowReturn +gst_base_video_decoder_chain (GstPad * pad, GstBuffer * buf) +{ + GstBaseVideoDecoder *base_video_decoder; + GstBaseVideoDecoderClass *klass; + GstBuffer *buffer; + GstFlowReturn ret; + + GST_DEBUG ("chain %lld", GST_BUFFER_TIMESTAMP (buf)); + +#if 0 + /* requiring the pad to be negotiated makes it impossible to use + * oggdemux or filesrc ! decoder */ + if (!gst_pad_is_negotiated (pad)) { + GST_DEBUG ("not negotiated"); + return GST_FLOW_NOT_NEGOTIATED; + } +#endif + + base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad)); + klass = GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + GST_DEBUG_OBJECT (base_video_decoder, "chain"); + + if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) { + GST_DEBUG_OBJECT (base_video_decoder, "received DISCONT buffer"); + if (base_video_decoder->started) { + gst_base_video_decoder_reset (base_video_decoder); + } + } + + if (!base_video_decoder->started) { + klass->start (base_video_decoder); + base_video_decoder->started = TRUE; + } + + if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) { + GST_DEBUG ("timestamp %lld offset %lld", GST_BUFFER_TIMESTAMP (buf), + base_video_decoder->offset); + base_video_decoder->last_sink_timestamp = GST_BUFFER_TIMESTAMP (buf); + } + if (GST_BUFFER_OFFSET_END (buf) != -1) { + GST_DEBUG ("gp %lld", GST_BUFFER_OFFSET_END (buf)); + base_video_decoder->last_sink_offset_end = GST_BUFFER_OFFSET_END (buf); + } + base_video_decoder->offset += GST_BUFFER_SIZE (buf); + +#if 0 + if (base_video_decoder->timestamp_offset == GST_CLOCK_TIME_NONE && + GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) { + GST_DEBUG ("got new offset %lld", GST_BUFFER_TIMESTAMP (buf)); + base_video_decoder->timestamp_offset = GST_BUFFER_TIMESTAMP (buf); + } +#endif + + if (base_video_decoder->current_frame == NULL) { + base_video_decoder->current_frame = + gst_base_video_decoder_new_frame (base_video_decoder); + } + + gst_adapter_push (base_video_decoder->input_adapter, buf); + + if (!base_video_decoder->have_sync) { + int n, m; + + GST_DEBUG ("no sync, scanning"); + + n = gst_adapter_available (base_video_decoder->input_adapter); + m = klass->scan_for_sync (base_video_decoder, FALSE, 0, n); + + if (m >= n) { + g_warning ("subclass scanned past end %d >= %d", m, n); + } + + gst_adapter_flush (base_video_decoder->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_decoder->have_sync = TRUE; + } + + if (!base_video_decoder->have_sync) { + gst_object_unref (base_video_decoder); + return GST_FLOW_OK; + } + } + + /* FIXME: use gst_adapter_prev_timestamp() here instead? */ + buffer = gst_adapter_get_buffer (base_video_decoder->input_adapter); + + base_video_decoder->buffer_timestamp = GST_BUFFER_TIMESTAMP (buffer); + gst_buffer_unref (buffer); + + do { + ret = klass->parse_data (base_video_decoder, FALSE); + } while (ret == GST_FLOW_OK); + + if (ret == GST_BASE_VIDEO_DECODER_FLOW_NEED_DATA) { + gst_object_unref (base_video_decoder); + return GST_FLOW_OK; + } + + gst_object_unref (base_video_decoder); + return ret; +} + +static GstStateChangeReturn +gst_base_video_decoder_change_state (GstElement * element, + GstStateChange transition) +{ + GstBaseVideoDecoder *base_video_decoder; + GstBaseVideoDecoderClass *base_video_decoder_class; + GstStateChangeReturn ret; + + base_video_decoder = GST_BASE_VIDEO_DECODER (element); + base_video_decoder_class = GST_BASE_VIDEO_DECODER_GET_CLASS (element); + + switch (transition) { + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + if (base_video_decoder_class->stop) { + base_video_decoder_class->stop (base_video_decoder); + } + break; + default: + break; + } + + return ret; +} + +static void +gst_base_video_decoder_free_frame (GstVideoFrame * frame) +{ + g_return_if_fail (frame != NULL); + + 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_decoder_new_frame (GstBaseVideoDecoder * base_video_decoder) +{ + GstVideoFrame *frame; + + frame = g_malloc0 (sizeof (GstVideoFrame)); + + frame->system_frame_number = base_video_decoder->system_frame_number; + base_video_decoder->system_frame_number++; + + frame->decode_frame_number = frame->system_frame_number - + base_video_decoder->reorder_depth; + + frame->decode_timestamp = -1; + frame->presentation_timestamp = -1; + frame->presentation_duration = -1; + frame->n_fields = 2; + + return frame; +} + +GstFlowReturn +gst_base_video_decoder_finish_frame (GstBaseVideoDecoder * base_video_decoder, + GstVideoFrame * frame) +{ + GstBaseVideoDecoderClass *base_video_decoder_class; + GstBuffer *src_buffer; + + GST_DEBUG ("finish frame"); + + base_video_decoder_class = + GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + GST_DEBUG ("finish frame sync=%d pts=%lld", frame->is_sync_point, + frame->presentation_timestamp); + + if (frame->is_sync_point) { + if (GST_CLOCK_TIME_IS_VALID (frame->presentation_timestamp)) { + if (frame->presentation_timestamp != base_video_decoder->timestamp_offset) { + GST_DEBUG ("sync timestamp %lld diff %lld", + frame->presentation_timestamp, + frame->presentation_timestamp - + base_video_decoder->state.segment.start); + base_video_decoder->timestamp_offset = frame->presentation_timestamp; + base_video_decoder->field_index = 0; + } else { + /* This case is for one initial timestamp and no others, e.g., + * filesrc ! decoder ! xvimagesink */ + GST_WARNING ("sync timestamp didn't change, ignoring"); + frame->presentation_timestamp = GST_CLOCK_TIME_NONE; + } + } else { + GST_WARNING ("sync point doesn't have timestamp"); + if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->timestamp_offset)) { + GST_ERROR ("No base timestamp. Assuming frames start at 0"); + base_video_decoder->timestamp_offset = 0; + base_video_decoder->field_index = 0; + } + } + } + frame->field_index = base_video_decoder->field_index; + base_video_decoder->field_index += frame->n_fields; + + if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) { + frame->presentation_timestamp = + gst_base_video_decoder_get_field_timestamp (base_video_decoder, + frame->field_index); + frame->presentation_duration = GST_CLOCK_TIME_NONE; + frame->decode_timestamp = + gst_base_video_decoder_get_timestamp (base_video_decoder, + frame->decode_frame_number); + } + if (frame->presentation_duration == GST_CLOCK_TIME_NONE) { + frame->presentation_duration = + gst_base_video_decoder_get_field_timestamp (base_video_decoder, + frame->field_index + frame->n_fields) - frame->presentation_timestamp; + } + + if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->last_timestamp)) { + if (frame->presentation_timestamp < base_video_decoder->last_timestamp) { + GST_WARNING ("decreasing timestamp (%lld < %lld)", + frame->presentation_timestamp, base_video_decoder->last_timestamp); + } + } + base_video_decoder->last_timestamp = frame->presentation_timestamp; + + GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_BUFFER_FLAG_DELTA_UNIT); + if (base_video_decoder->state.interlaced) { +#ifndef GST_VIDEO_BUFFER_TFF +#define GST_VIDEO_BUFFER_TFF (GST_MINI_OBJECT_FLAG_LAST << 5) +#endif +#ifndef GST_VIDEO_BUFFER_RFF +#define GST_VIDEO_BUFFER_RFF (GST_MINI_OBJECT_FLAG_LAST << 6) +#endif +#ifndef GST_VIDEO_BUFFER_ONEFIELD +#define GST_VIDEO_BUFFER_ONEFIELD (GST_MINI_OBJECT_FLAG_LAST << 7) +#endif + int tff = base_video_decoder->state.top_field_first; + + if (frame->field_index & 1) { + tff ^= 1; + } + if (tff) { + GST_BUFFER_FLAG_SET (frame->src_buffer, GST_VIDEO_BUFFER_TFF); + } else { + GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_TFF); + } + GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_RFF); + GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_ONEFIELD); + if (frame->n_fields == 3) { + GST_BUFFER_FLAG_SET (frame->src_buffer, GST_VIDEO_BUFFER_RFF); + } else if (frame->n_fields == 1) { + GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_ONEFIELD); + } + } + + GST_BUFFER_TIMESTAMP (frame->src_buffer) = frame->presentation_timestamp; + GST_BUFFER_DURATION (frame->src_buffer) = frame->presentation_duration; + GST_BUFFER_OFFSET (frame->src_buffer) = -1; + GST_BUFFER_OFFSET_END (frame->src_buffer) = -1; + + GST_DEBUG ("pushing frame %lld", frame->presentation_timestamp); + + base_video_decoder->frames = + g_list_remove (base_video_decoder->frames, frame); + + gst_base_video_decoder_set_src_caps (base_video_decoder); + + src_buffer = frame->src_buffer; + frame->src_buffer = NULL; + + gst_base_video_decoder_free_frame (frame); + + if (base_video_decoder->sink_clipping) { + gint64 start = GST_BUFFER_TIMESTAMP (src_buffer); + gint64 stop = GST_BUFFER_TIMESTAMP (src_buffer) + + GST_BUFFER_DURATION (src_buffer); + + if (gst_segment_clip (&base_video_decoder->state.segment, GST_FORMAT_TIME, + start, stop, &start, &stop)) { + GST_BUFFER_TIMESTAMP (src_buffer) = start; + GST_BUFFER_DURATION (src_buffer) = stop - start; + } else { + GST_DEBUG ("dropping buffer outside segment"); + gst_buffer_unref (src_buffer); + return GST_FLOW_OK; + } + } + + return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), + src_buffer); +} + +int +gst_base_video_decoder_get_height (GstBaseVideoDecoder * base_video_decoder) +{ + return base_video_decoder->state.height; +} + +int +gst_base_video_decoder_get_width (GstBaseVideoDecoder * base_video_decoder) +{ + return base_video_decoder->state.width; +} + +GstFlowReturn +gst_base_video_decoder_end_of_stream (GstBaseVideoDecoder * base_video_decoder, + GstBuffer * buffer) +{ + + if (base_video_decoder->frames) { + GST_DEBUG ("EOS with frames left over"); + } + + return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), + buffer); +} + +void +gst_base_video_decoder_add_to_frame (GstBaseVideoDecoder * base_video_decoder, + int n_bytes) +{ + GstBuffer *buf; + + GST_DEBUG ("add to frame"); + +#if 0 + if (gst_adapter_available (base_video_decoder->output_adapter) == 0) { + GstBuffer *buffer; + + buffer = + gst_adapter_get_orig_buffer_at_offset + (base_video_decoder->input_adapter, 0); + if (buffer) { + base_video_decoder->current_frame->presentation_timestamp = + GST_BUFFER_TIMESTAMP (buffer); + gst_buffer_unref (buffer); + } + } +#endif + + if (n_bytes == 0) + return; + + buf = gst_adapter_take_buffer (base_video_decoder->input_adapter, n_bytes); + + gst_adapter_push (base_video_decoder->output_adapter, buf); +} + +static guint64 +gst_base_video_decoder_get_timestamp (GstBaseVideoDecoder * base_video_decoder, + int picture_number) +{ + if (base_video_decoder->state.fps_d == 0) { + return -1; + } + if (picture_number < base_video_decoder->base_picture_number) { + return base_video_decoder->timestamp_offset - + (gint64) gst_util_uint64_scale (base_video_decoder->base_picture_number + - picture_number, base_video_decoder->state.fps_d * GST_SECOND, + base_video_decoder->state.fps_n); + } else { + return base_video_decoder->timestamp_offset + + gst_util_uint64_scale (picture_number - + base_video_decoder->base_picture_number, + base_video_decoder->state.fps_d * GST_SECOND, + base_video_decoder->state.fps_n); + } +} + +static guint64 +gst_base_video_decoder_get_field_timestamp (GstBaseVideoDecoder * + base_video_decoder, int field_offset) +{ + if (base_video_decoder->state.fps_d == 0) { + return GST_CLOCK_TIME_NONE; + } + if (field_offset < 0) { + GST_WARNING ("field offset < 0"); + return GST_CLOCK_TIME_NONE; + } + return base_video_decoder->timestamp_offset + + gst_util_uint64_scale (field_offset, + base_video_decoder->state.fps_d * GST_SECOND, + base_video_decoder->state.fps_n * 2); +} + + +GstFlowReturn +gst_base_video_decoder_have_frame (GstBaseVideoDecoder * base_video_decoder) +{ + GstVideoFrame *frame = base_video_decoder->current_frame; + GstBuffer *buffer; + GstBaseVideoDecoderClass *base_video_decoder_class; + GstFlowReturn ret = GST_FLOW_OK; + int n_available; + + GST_DEBUG ("have_frame"); + + base_video_decoder_class = + GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder); + + n_available = gst_adapter_available (base_video_decoder->output_adapter); + if (n_available) { + buffer = gst_adapter_take_buffer (base_video_decoder->output_adapter, + n_available); + } else { + buffer = gst_buffer_new_and_alloc (0); + } + + frame->distance_from_sync = base_video_decoder->distance_from_sync; + base_video_decoder->distance_from_sync++; + +#if 0 + if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) { + frame->presentation_timestamp = + gst_base_video_decoder_get_timestamp (base_video_decoder, + frame->presentation_frame_number); + frame->presentation_duration = + gst_base_video_decoder_get_timestamp (base_video_decoder, + frame->presentation_frame_number + 1) - frame->presentation_timestamp; + frame->decode_timestamp = + gst_base_video_decoder_get_timestamp (base_video_decoder, + frame->decode_frame_number); + } +#endif + +#if 0 + 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; +#endif + + 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); + } + if (base_video_decoder->discont) { + GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); + base_video_decoder->discont = FALSE; + } + + frame->sink_buffer = buffer; + + base_video_decoder->frames = g_list_append (base_video_decoder->frames, + frame); + + /* do something with frame */ + ret = base_video_decoder_class->handle_frame (base_video_decoder, frame); + if (!GST_FLOW_IS_SUCCESS (ret)) { + GST_DEBUG ("flow error!"); + } + + /* create new frame */ + base_video_decoder->current_frame = + gst_base_video_decoder_new_frame (base_video_decoder); + + return ret; +} + +GstVideoState * +gst_base_video_decoder_get_state (GstBaseVideoDecoder * base_video_decoder) +{ + return &base_video_decoder->state; + +} + +void +gst_base_video_decoder_set_state (GstBaseVideoDecoder * base_video_decoder, + GstVideoState * state) +{ + memcpy (&base_video_decoder->state, state, sizeof (*state)); + +} + +void +gst_base_video_decoder_lost_sync (GstBaseVideoDecoder * base_video_decoder) +{ + g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (base_video_decoder)); + + GST_DEBUG ("lost_sync"); + + if (gst_adapter_available (base_video_decoder->input_adapter) >= 1) { + gst_adapter_flush (base_video_decoder->input_adapter, 1); + } + + base_video_decoder->have_sync = FALSE; +} + +void +gst_base_video_decoder_set_sync_point (GstBaseVideoDecoder * base_video_decoder) +{ + GST_DEBUG ("set_sync_point"); + + base_video_decoder->current_frame->is_sync_point = TRUE; + base_video_decoder->distance_from_sync = 0; + + base_video_decoder->current_frame->presentation_timestamp = + base_video_decoder->last_sink_timestamp; + + +} + +GstVideoFrame * +gst_base_video_decoder_get_frame (GstBaseVideoDecoder * base_video_decoder, + int frame_number) +{ + GList *g; + + for (g = g_list_first (base_video_decoder->frames); g; g = g_list_next (g)) { + GstVideoFrame *frame = g->data; + + if (frame->system_frame_number == frame_number) { + return frame; + } + } + + return NULL; +} + +void +gst_base_video_decoder_set_src_caps (GstBaseVideoDecoder * base_video_decoder) +{ + GstCaps *caps; + GstVideoState *state = &base_video_decoder->state; + + if (base_video_decoder->have_src_caps) + return; + + caps = gst_video_format_new_caps (state->format, + state->width, state->height, + state->fps_n, state->fps_d, state->par_n, state->par_d); + gst_caps_set_simple (caps, "interlaced", + G_TYPE_BOOLEAN, state->interlaced, NULL); + + GST_DEBUG ("setting caps %" GST_PTR_FORMAT, caps); + + gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), caps); + + base_video_decoder->have_src_caps = TRUE; +} |