diff options
Diffstat (limited to 'ext/xvid/gstxviddec.c')
| -rw-r--r-- | ext/xvid/gstxviddec.c | 673 |
1 files changed, 0 insertions, 673 deletions
diff --git a/ext/xvid/gstxviddec.c b/ext/xvid/gstxviddec.c deleted file mode 100644 index b49cf2fad..000000000 --- a/ext/xvid/gstxviddec.c +++ /dev/null @@ -1,673 +0,0 @@ -/* GStreamer xvid decoder plugin - * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> - * (C) 2006 Mark Nauwelaerts <manauw@skynet.be> - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <string.h> -#include <xvid.h> - -#include <gst/video/video.h> -#include "gstxviddec.h" - -static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("video/x-xvid, " - "width = (int) [ 0, MAX ], " - "height = (int) [ 0, MAX ], " "framerate = (fraction) [ 0/1, MAX ]; " - "video/mpeg, " - "mpegversion = (int) 4, " - "systemstream = (boolean) FALSE, " - "width = (int) [ 0, MAX ], " - "height = (int) [ 0, MAX ], " "framerate = (fraction) [ 0/1, MAX ]") - ); - -static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YUY2, YV12, YVYU, UYVY }") - "; " RGB_24_32_STATIC_CAPS (32, 0x00ff0000, 0x0000ff00, - 0x000000ff) "; " RGB_24_32_STATIC_CAPS (32, 0xff000000, 0x00ff0000, - 0x0000ff00) "; " RGB_24_32_STATIC_CAPS (32, 0x0000ff00, 0x00ff0000, - 0xff000000) "; " RGB_24_32_STATIC_CAPS (32, 0x000000ff, 0x0000ff00, - 0x00ff0000) "; " RGB_24_32_STATIC_CAPS (24, 0x0000ff, 0x00ff00, - 0xff0000) "; " GST_VIDEO_CAPS_RGB_15 "; " GST_VIDEO_CAPS_RGB_16) - ); - -GST_DEBUG_CATEGORY_STATIC (xviddec_debug); -#define GST_CAT_DEFAULT xviddec_debug - -static void gst_xviddec_base_init (GstXvidDecClass * klass); -static void gst_xviddec_class_init (GstXvidDecClass * klass); -static void gst_xviddec_init (GstXvidDec * dec); -static void gst_xviddec_reset (GstXvidDec * dec); -static gboolean gst_xviddec_handle_sink_event (GstPad * pad, GstEvent * event); -static GstFlowReturn gst_xviddec_chain (GstPad * pad, GstBuffer * buf); -static gboolean gst_xviddec_setcaps (GstPad * pad, GstCaps * caps); -static void gst_xviddec_flush_buffers (GstXvidDec * dec, gboolean send); -static GstStateChangeReturn gst_xviddec_change_state (GstElement * element, - GstStateChange transition); - - -static GstElementClass *parent_class = NULL; - -GType -gst_xviddec_get_type (void) -{ - static GType xviddec_type = 0; - - if (!xviddec_type) { - static const GTypeInfo xviddec_info = { - sizeof (GstXvidDecClass), - (GBaseInitFunc) gst_xviddec_base_init, - NULL, - (GClassInitFunc) gst_xviddec_class_init, - NULL, - NULL, - sizeof (GstXvidDec), - 0, - (GInstanceInitFunc) gst_xviddec_init, - }; - - xviddec_type = g_type_register_static (GST_TYPE_ELEMENT, - "GstXvidDec", &xviddec_info, 0); - } - return xviddec_type; -} - -static void -gst_xviddec_base_init (GstXvidDecClass * klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - gst_element_class_add_static_pad_template (element_class, &sink_template); - gst_element_class_add_static_pad_template (element_class, &src_template); - - gst_element_class_set_static_metadata (element_class, "XviD video decoder", - "Codec/Decoder/Video", - "XviD decoder based on xvidcore", - "Ronald Bultje <rbultje@ronald.bitfreak.net>"); -} - -static void -gst_xviddec_class_init (GstXvidDecClass * klass) -{ - GstElementClass *gstelement_class = (GstElementClass *) klass; - - parent_class = g_type_class_peek_parent (klass); - - GST_DEBUG_CATEGORY_INIT (xviddec_debug, "xviddec", 0, "XviD decoder"); - - gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_xviddec_change_state); -} - - -static void -gst_xviddec_init (GstXvidDec * dec) -{ - /* create the sink pad */ - dec->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink"); - gst_pad_set_chain_function (dec->sinkpad, - GST_DEBUG_FUNCPTR (gst_xviddec_chain)); - gst_pad_set_setcaps_function (dec->sinkpad, - GST_DEBUG_FUNCPTR (gst_xviddec_setcaps)); - gst_pad_set_event_function (dec->sinkpad, - GST_DEBUG_FUNCPTR (gst_xviddec_handle_sink_event)); - gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad); - - /* create the src pad */ - dec->srcpad = gst_pad_new_from_static_template (&src_template, "src"); - gst_pad_use_fixed_caps (dec->srcpad); - gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad); - - gst_xviddec_reset (dec); -} - - -static void -gst_xviddec_reset (GstXvidDec * dec) -{ - /* size, etc. */ - dec->width = dec->height = dec->csp = -1; - dec->fps_n = dec->par_n = -1; - dec->fps_d = dec->par_d = 1; - dec->next_ts = dec->next_dur = GST_CLOCK_TIME_NONE; - dec->outbuf_size = 0; - - /* set xvid handle to NULL */ - dec->handle = NULL; - - /* no delayed timestamp to start with */ - dec->have_ts = FALSE; - - /* need keyframe to get going */ - dec->waiting_for_key = TRUE; -} - - -static void -gst_xviddec_unset (GstXvidDec * dec) -{ - /* release XviD decoder */ - xvid_decore (dec->handle, XVID_DEC_DESTROY, NULL, NULL); - dec->handle = NULL; -} - - -static gboolean -gst_xviddec_handle_sink_event (GstPad * pad, GstEvent * event) -{ - GstXvidDec *dec = GST_XVIDDEC (GST_PAD_PARENT (pad)); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_EOS: - gst_xviddec_flush_buffers (dec, TRUE); - break; - case GST_EVENT_FLUSH_STOP: - gst_xviddec_flush_buffers (dec, FALSE); - break; - case GST_EVENT_NEWSEGMENT: - /* don't really mind about the actual segment info, - * but we do need to recover from this possible jump */ - /* FIXME, NEWSEGMENT is not a discontinuity. A decoder - * should clip the output to the segment boundaries. - * Also the rate field of the segment can be used to - * optimize the decoding, like skipping B frames when - * playing at double speed. - * The DISCONT flag on buffers should be used to detect - * discontinuities. - */ - dec->waiting_for_key = TRUE; - break; - default: - break; - } - - return gst_pad_push_event (dec->srcpad, event); -} - - -static gboolean -gst_xviddec_setup (GstXvidDec * dec) -{ - xvid_dec_create_t xdec; - gint ret; - - /* initialise parameters, see xvid documentation */ - gst_xvid_init_struct (xdec); - /* let the decoder handle this, don't trust the container */ - xdec.width = 0; - xdec.height = 0; - xdec.handle = NULL; - - GST_DEBUG_OBJECT (dec, "Initializing xvid decoder with parameters " - "%dx%d@%d", dec->width, dec->height, dec->csp); - - if ((ret = xvid_decore (NULL, XVID_DEC_CREATE, &xdec, NULL)) < 0) { - GST_WARNING_OBJECT (dec, "Initializing xvid decoder failed: %s (%d)", - gst_xvid_error (ret), ret); - return FALSE; - } - - dec->handle = xdec.handle; - - return TRUE; -} - - -static void -gst_xviddec_add_par (GstStructure * structure, - gint mux_par_n, gint mux_par_d, gint dec_par_n, gint dec_par_d) -{ - /* muxer wins if decoder has nothing interesting to offer */ - if (dec_par_n == dec_par_d) { - gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION, - mux_par_n, mux_par_d, NULL); - } else { - gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION, - dec_par_n, dec_par_d, NULL); - } -} - - -/* based on the decoder info, if provided, and xviddec info, - construct a caps and send on to src pad */ -static gboolean -gst_xviddec_negotiate (GstXvidDec * dec, xvid_dec_stats_t * xstats) -{ - gboolean ret; - gint par_width, par_height; - GstCaps *caps; - - /* note: setcaps call with no xstats info, - so definitely need to negotiate then */ - if (xstats && (xstats->type != XVID_TYPE_VOL - || (xstats->type == XVID_TYPE_VOL - && dec->width == xstats->data.vol.width - && dec->height == xstats->data.vol.height))) - return TRUE; - - switch (xstats ? xstats->data.vol.par : XVID_PAR_11_VGA) { - case XVID_PAR_11_VGA: - par_width = par_height = 1; - break; - case XVID_PAR_43_PAL: - case XVID_PAR_43_NTSC: - par_width = 4; - par_height = 3; - break; - case XVID_PAR_169_PAL: - case XVID_PAR_169_NTSC: - par_width = 16; - par_height = 9; - break; - case XVID_PAR_EXT: - default: - par_width = xstats->data.vol.par_width; - par_height = xstats->data.vol.par_height; - } - - caps = gst_xvid_csp_to_caps (dec->csp, dec->width, dec->height); - - /* can only provide framerate if we received one */ - if (dec->fps_n != -1) { - gst_structure_set (gst_caps_get_structure (caps, 0), "framerate", - GST_TYPE_FRACTION, dec->fps_n, dec->fps_d, NULL); - } - - gst_xviddec_add_par (gst_caps_get_structure (caps, 0), - dec->par_n, dec->par_d, par_width, par_height); - - GST_LOG ("setting caps on source pad: %" GST_PTR_FORMAT, caps); - ret = gst_pad_set_caps (dec->srcpad, caps); - gst_caps_unref (caps); - - return ret; -} - -static GstFlowReturn -gst_xviddec_chain (GstPad * pad, GstBuffer * buf) -{ - GstXvidDec *dec; - GstBuffer *outbuf = NULL; - xvid_dec_frame_t xframe; - xvid_dec_stats_t xstats; - gint ret; - guint8 *data, *dupe = NULL; - guint size; - GstFlowReturn fret; - - dec = GST_XVIDDEC (GST_OBJECT_PARENT (pad)); - - if (!dec->handle) - goto not_negotiated; - - fret = GST_FLOW_OK; - - GST_LOG_OBJECT (dec, "Received buffer of time %" GST_TIME_FORMAT - " duration %" GST_TIME_FORMAT ", size %d", - GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), - GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_SIZE (buf)); - - if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) { - /* FIXME: should we do anything here, like flush the decoder? */ - } - - data = GST_BUFFER_DATA (buf); - size = GST_BUFFER_SIZE (buf); - - /* xvidcore overreads the input buffer, we need to alloc some extra padding - * to make things work reliably */ -#define EXTRA_PADDING 16 - if (EXTRA_PADDING > 0) { - dupe = g_malloc (size + EXTRA_PADDING); - memcpy (dupe, data, size); - memset (dupe + size, 0, EXTRA_PADDING); - data = dupe; - } - - do { /* loop needed because xvidcore may return vol information */ - /* decode and so ... */ - gst_xvid_init_struct (xframe); - xframe.general = XVID_LOWDELAY; - xframe.bitstream = (void *) data; - xframe.length = size; - - gst_xvid_init_struct (xstats); - - if (outbuf == NULL) { - fret = gst_pad_alloc_buffer (dec->srcpad, GST_BUFFER_OFFSET_NONE, - dec->outbuf_size, GST_PAD_CAPS (dec->srcpad), &outbuf); - if (fret != GST_FLOW_OK) - goto done; - } - - gst_xvid_image_fill (&xframe.output, GST_BUFFER_DATA (outbuf), - dec->csp, dec->width, dec->height); - - ret = xvid_decore (dec->handle, XVID_DEC_DECODE, &xframe, &xstats); - if (ret < 0) - goto decode_error; - - GST_LOG_OBJECT (dec, "xvid produced output, type %d, consumed %d", - xstats.type, ret); - - if (xstats.type == XVID_TYPE_VOL) - gst_xviddec_negotiate (dec, &xstats); - - data += ret; - size -= ret; - } while (xstats.type <= 0 && size > 0); - - /* 1 byte is frequently left over */ - if (size > 1) { - GST_WARNING_OBJECT (dec, "decoder did not consume all input"); - } - - /* FIXME, reflow the multiple return exit points */ - if (xstats.type > 0) { /* some real output was produced */ - if (G_UNLIKELY (dec->waiting_for_key)) { - if (xstats.type != XVID_TYPE_IVOP) - goto dropping; - - dec->waiting_for_key = FALSE; - } - /* bframes can cause a delay in frames being returned - non keyframe timestamps can permute a bit between - encode and display order, but should match for keyframes */ - if (dec->have_ts) { - GST_BUFFER_TIMESTAMP (outbuf) = dec->next_ts; - GST_BUFFER_DURATION (outbuf) = dec->next_dur; - dec->next_ts = GST_BUFFER_TIMESTAMP (buf); - dec->next_dur = GST_BUFFER_DURATION (buf); - } else { - GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf); - GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf); - } - gst_buffer_set_caps (outbuf, GST_PAD_CAPS (dec->srcpad)); - GST_LOG_OBJECT (dec, "pushing buffer with pts %" GST_TIME_FORMAT - " duration %" GST_TIME_FORMAT, - GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)), - GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf))); - fret = gst_pad_push (dec->srcpad, outbuf); - - } else { /* no real output yet, delay in frames being returned */ - if (G_UNLIKELY (dec->have_ts)) { - GST_WARNING_OBJECT (dec, - "xvid decoder produced no output, but timestamp %" GST_TIME_FORMAT - " already queued", GST_TIME_ARGS (dec->next_ts)); - } else { - dec->have_ts = TRUE; - dec->next_ts = GST_BUFFER_TIMESTAMP (buf); - dec->next_dur = GST_BUFFER_DURATION (buf); - } - gst_buffer_unref (outbuf); - } - -done: - g_free (dupe); - gst_buffer_unref (buf); - - return fret; - - /* ERRORS */ -not_negotiated: - { - GST_ELEMENT_ERROR (dec, CORE, NEGOTIATION, (NULL), - ("format wasn't negotiated before chain function")); - fret = GST_FLOW_NOT_NEGOTIATED; - goto done; - } -decode_error: - { - /* FIXME: shouldn't error out fatally/properly after N decoding errors? */ - GST_ELEMENT_WARNING (dec, STREAM, DECODE, (NULL), - ("Error decoding xvid frame: %s (%d)", gst_xvid_error (ret), ret)); - if (outbuf) - gst_buffer_unref (outbuf); - goto done; - } -dropping: - { - GST_WARNING_OBJECT (dec, "Dropping non-keyframe (seek/init)"); - if (outbuf) - gst_buffer_unref (outbuf); - goto done; - } -} - - -/* flush xvid encoder buffers caused by bframe usage; - not well tested */ -static void -gst_xviddec_flush_buffers (GstXvidDec * dec, gboolean send) -{ -#if 0 - gint ret; - GstBuffer *outbuf = NULL; - xvid_dec_frame_t xframe; - xvid_dec_stats_t xstats; -#endif - - GST_DEBUG_OBJECT (dec, "flushing buffers with send %d, have_ts %d", - send, dec->have_ts); - - /* no need to flush if there is no delayed time-stamp */ - if (!dec->have_ts) - return; - - /* flushing must reset the timestamp keeping */ - dec->have_ts = FALSE; - - /* also no need to flush if no handle */ - if (!dec->handle) - return; - - /* unlike encoder, decoder does not seem to like flushing, disable for now */ -#if 0 - gst_xvid_init_struct (xframe); - gst_xvid_init_struct (xstats); - - /* init a fake frame to force flushing */ - xframe.bitstream = NULL; - xframe.length = -1; - - ret = gst_xviddec_decode (dec, xframe, &outbuf, &xstats); - GST_DEBUG_OBJECT (dec, "received frame when flushing, type %d, size %d", - xstats.type, ret); - - if (ret > 0 && send) { - /* we have some valid return frame, give it the delayed timestamp and send */ - GST_BUFFER_TIMESTAMP (outbuf) = dec->next_ts; - GST_BUFFER_DURATION (outbuf) = dec->next_dur; - - gst_buffer_set_caps (outbuf, GST_PAD_CAPS (dec->srcpad)); - gst_pad_push (dec->srcpad, outbuf); - return; - } - - if (outbuf) - gst_buffer_unref (outbuf); -#else - return; -#endif -} - -#if 0 -static GstCaps * -gst_xviddec_src_getcaps (GstPad * pad) -{ - GstXvidDec *dec = GST_XVIDDEC (GST_PAD_PARENT (pad)); - GstCaps *caps; - gint csp[] = { - XVID_CSP_I420, - XVID_CSP_YV12, - XVID_CSP_YUY2, - XVID_CSP_UYVY, - XVID_CSP_YVYU, - XVID_CSP_BGRA, - XVID_CSP_ABGR, - XVID_CSP_RGBA, -#ifdef XVID_CSP_ARGB - XVID_CSP_ARGB, -#endif - XVID_CSP_BGR, - XVID_CSP_RGB555, - XVID_CSP_RGB565, - 0 - }, i; - - if (!GST_PAD_CAPS (dec->sinkpad)) { - GstPadTemplate *templ = gst_static_pad_template_get (&src_template); - - return gst_caps_copy (gst_pad_template_get_caps (templ)); - } - - caps = gst_caps_new_empty (); - for (i = 0; csp[i] != 0; i++) { - GstCaps *one = gst_xvid_csp_to_caps (csp[i], dec->width, - dec->height, dec->fps, dec->par); - - gst_caps_append (caps, one); - } - - return caps; -} -#endif - -static gboolean -gst_xviddec_setcaps (GstPad * pad, GstCaps * caps) -{ - GstXvidDec *dec = GST_XVIDDEC (GST_PAD_PARENT (pad)); - GstStructure *structure; - GstCaps *allowed_caps; - const GValue *val; - - GST_LOG_OBJECT (dec, "caps %" GST_PTR_FORMAT, caps); - - /* if there's something old around, remove it */ - if (dec->handle) { - gst_xviddec_unset (dec); - } - - structure = gst_caps_get_structure (caps, 0); - gst_structure_get_int (structure, "width", &dec->width); - gst_structure_get_int (structure, "height", &dec->height); - - /* perhaps some fps info */ - val = gst_structure_get_value (structure, "framerate"); - if ((val != NULL) && GST_VALUE_HOLDS_FRACTION (val)) { - dec->fps_n = gst_value_get_fraction_numerator (val); - dec->fps_d = gst_value_get_fraction_denominator (val); - } else { - dec->fps_n = -1; - dec->fps_d = 1; - } - - /* perhaps some par info */ - val = gst_structure_get_value (structure, "pixel-aspect-ratio"); - if (val != NULL && GST_VALUE_HOLDS_FRACTION (val)) { - dec->par_n = gst_value_get_fraction_numerator (val); - dec->par_d = gst_value_get_fraction_denominator (val); - } else { - dec->par_n = 1; - dec->par_d = 1; - } - - /* we try to find the preferred/accept csp */ - allowed_caps = gst_pad_get_allowed_caps (dec->srcpad); - if (!allowed_caps) { - GST_DEBUG_OBJECT (dec, "... but no peer, using template caps"); - /* need to copy because get_allowed_caps returns a ref, - and get_pad_template_caps doesn't */ - allowed_caps = gst_caps_copy (gst_pad_get_pad_template_caps (dec->srcpad)); - } - GST_LOG_OBJECT (dec, "allowed source caps %" GST_PTR_FORMAT, allowed_caps); - - /* pick the first one ... */ - structure = gst_caps_get_structure (allowed_caps, 0); - val = gst_structure_get_value (structure, "format"); - if (val != NULL && G_VALUE_TYPE (val) == GST_TYPE_LIST) { - GValue temp = { 0, }; - gst_value_init_and_copy (&temp, gst_value_list_get_value (val, 0)); - gst_structure_set_value (structure, "format", &temp); - g_value_unset (&temp); - } - - /* ... and use its info to get the csp */ - dec->csp = gst_xvid_structure_to_csp (structure); - if (dec->csp == -1) { - GST_WARNING_OBJECT (dec, "failed to decide on colorspace, using I420"); - dec->csp = XVID_CSP_I420; - } - - dec->outbuf_size = - gst_xvid_image_get_size (dec->csp, dec->width, dec->height); - - GST_LOG_OBJECT (dec, "csp=%d, outbuf_size=%d", dec->csp, dec->outbuf_size); - - gst_caps_unref (allowed_caps); - - /* now set up xvid ... */ - if (!gst_xviddec_setup (dec)) { - GST_ELEMENT_ERROR (GST_ELEMENT (dec), LIBRARY, INIT, (NULL), (NULL)); - return FALSE; - } - - return gst_xviddec_negotiate (dec, NULL); -} - -static GstStateChangeReturn -gst_xviddec_change_state (GstElement * element, GstStateChange transition) -{ - GstXvidDec *dec = GST_XVIDDEC (element); - GstStateChangeReturn ret; - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - if (!gst_xvid_init ()) - return GST_STATE_CHANGE_FAILURE; - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - if (ret == GST_STATE_CHANGE_FAILURE) - goto done; - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - gst_xviddec_flush_buffers (dec, FALSE); - if (dec->handle) { - gst_xviddec_unset (dec); - } - gst_xviddec_reset (dec); - break; - default: - break; - } - -done: - return ret; -} |