diff options
Diffstat (limited to 'gst/flx/gstflxdec.c')
| -rw-r--r-- | gst/flx/gstflxdec.c | 656 |
1 files changed, 0 insertions, 656 deletions
diff --git a/gst/flx/gstflxdec.c b/gst/flx/gstflxdec.c deleted file mode 100644 index a0a6c282..00000000 --- a/gst/flx/gstflxdec.c +++ /dev/null @@ -1,656 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com> - * - * 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 <string.h> - -#include "flx_fmt.h" -#include "gstflxdec.h" -#include <gst/video/video.h> - -#define JIFFIE (GST_SECOND/70) - -GST_DEBUG_CATEGORY_STATIC (flxdec_debug); -#define GST_CAT_DEFAULT flxdec_debug - -/* flx element information */ -static GstElementDetails flxdec_details = { - "FLX Decoder", - "Codec/Decoder/Audio", - "FLX decoder", - "Sepp Wijnands <mrrazz@garbage-coderz.net>" -}; - -/* Flx signals and args */ -enum -{ - /* FILL ME */ - LAST_SIGNAL -}; - -enum -{ - ARG_0 -}; - -/* input */ -static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("video/x-fli") - ); - -/* output */ -static GstStaticPadTemplate src_video_factory = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN) - ); - - -static void gst_flxdec_class_init (GstFlxDecClass * klass); -static void gst_flxdec_base_init (GstFlxDecClass * klass); -static void gst_flxdec_init (GstFlxDec * flxdec); - -static void gst_flxdec_loop (GstElement * element); - -static GstElementStateReturn gst_flxdec_change_state (GstElement * element); - -static void gst_flxdec_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec); -static void gst_flxdec_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec); - - -static void flx_decode_color (GstFlxDec *, guchar *, guchar *, gint); -static void flx_decode_brun (GstFlxDec *, guchar *, guchar *); -static void flx_decode_delta_fli (GstFlxDec *, guchar *, guchar *); -static void flx_decode_delta_flc (GstFlxDec *, guchar *, guchar *); - -#define rndalign(off) ((off) + ((off) % 2)) - -static GstElementClass *parent_class = NULL; - -GType -gst_flxdec_get_type (void) -{ - static GType flxdec_type = 0; - - if (!flxdec_type) { - static const GTypeInfo flxdec_info = { - sizeof (GstFlxDecClass), - (GBaseInitFunc) gst_flxdec_base_init, - NULL, - (GClassInitFunc) gst_flxdec_class_init, - NULL, - NULL, - sizeof (GstFlxDec), - 0, - (GInstanceInitFunc) gst_flxdec_init, - }; - - flxdec_type = - g_type_register_static (GST_TYPE_ELEMENT, "GstFlxDec", &flxdec_info, 0); - } - return flxdec_type; -} - -static void -gst_flxdec_base_init (GstFlxDecClass * klass) -{ - GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); - - gst_element_class_set_details (gstelement_class, &flxdec_details); - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&sink_factory)); - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&src_video_factory)); -} - -static void -gst_flxdec_class_init (GstFlxDecClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - - parent_class = g_type_class_ref (GST_TYPE_ELEMENT); - - GST_DEBUG_CATEGORY_INIT (flxdec_debug, "flxdec", 0, "FLX video decoder"); - - gobject_class->set_property = gst_flxdec_set_property; - gobject_class->get_property = gst_flxdec_get_property; - - gstelement_class->change_state = gst_flxdec_change_state; -} - - - -static void -gst_flxdec_init (GstFlxDec * flxdec) -{ - flxdec->sinkpad = - gst_pad_new_from_template (gst_static_pad_template_get (&sink_factory), - "sink"); - gst_element_add_pad (GST_ELEMENT (flxdec), flxdec->sinkpad); - gst_element_set_loop_function (GST_ELEMENT (flxdec), gst_flxdec_loop); - - flxdec->srcpad = - gst_pad_new_from_template (gst_static_pad_template_get - (&src_video_factory), "src"); - gst_element_add_pad (GST_ELEMENT (flxdec), flxdec->srcpad); - gst_pad_use_explicit_caps (flxdec->srcpad); - - flxdec->bs = NULL; - flxdec->frame = NULL; - flxdec->delta = NULL; -} - -static void -flx_decode_chunks (GstFlxDec * flxdec, gulong count, gchar * data, gchar * dest) -{ - FlxFrameChunk *hdr; - - g_return_if_fail (data != NULL); - - while (count--) { - hdr = (FlxFrameChunk *) data; - data += FlxFrameChunkSize; - - switch (hdr->id) { - case FLX_COLOR64: - flx_decode_color (flxdec, data, dest, 2); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - case FLX_COLOR256: - flx_decode_color (flxdec, data, dest, 0); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - case FLX_BRUN: - flx_decode_brun (flxdec, data, dest); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - case FLX_LC: - flx_decode_delta_fli (flxdec, data, dest); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - case FLX_SS2: - flx_decode_delta_flc (flxdec, data, dest); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - case FLX_BLACK: - memset (dest, 0, flxdec->size); - break; - - case FLX_MINI: - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - - default: - GST_WARNING ("Unimplented chunk type: 0x%02x size: %d - skipping", - hdr->id, hdr->size); - data += rndalign (hdr->size) - FlxFrameChunkSize; - break; - } - } -} - - -static void -flx_decode_color (GstFlxDec * flxdec, guchar * data, guchar * dest, gint scale) -{ - guint packs, count, indx; - - g_return_if_fail (flxdec != NULL); - - packs = (data[0] + (data[1] << 8)); - - data += 2; - indx = 0; - - GST_LOG ("GstFlxDec: cmap packs: %d", packs); - while (packs--) { - /* color map index + skip count */ - indx += *data++; - - /* number of rgb triplets */ - count = *data++ & 0xff; - if (count == 0) - count = 256; - - GST_LOG ("GstFlxDec: cmap count: %d (indx: %d)\n", count, indx); - flx_set_palette_vector (flxdec->converter, indx, count, data, scale); - - data += (count * 3); - } -} - -static void -flx_decode_brun (GstFlxDec * flxdec, guchar * data, guchar * dest) -{ - gulong count, lines, row; - guchar x; - - g_return_if_fail (flxdec != NULL); - - lines = flxdec->hdr.height; - while (lines--) { - /* packet count. - * should not be used anymore, since the flc format can - * contain more then 255 RLE packets. we use the frame - * width instead. - */ - data++; - - row = flxdec->hdr.width; - while (row) { - count = *data++; - - if (count > 0x7f) { - /* literal run */ - count = 0x100 - count; - row -= count; - - while (count--) - *dest++ = *data++; - - } else { - /* replicate run */ - row -= count; - x = *data++; - - while (count--) - *dest++ = x; - } - } - } -} - -static void -flx_decode_delta_fli (GstFlxDec * flxdec, guchar * data, guchar * dest) -{ - gulong count, packets, lines, start_line, start_l; - guchar *start_p, x; - - g_return_if_fail (flxdec != NULL); - g_return_if_fail (flxdec->delta != NULL); - - - /* use last frame for delta */ - memcpy (dest, GST_BUFFER_DATA (flxdec->delta), - GST_BUFFER_SIZE (flxdec->delta)); - - start_line = (data[0] + (data[1] << 8)); - lines = (data[2] + (data[3] << 8)); - data += 4; - - /* start position of delta */ - dest += (flxdec->hdr.width * start_line); - start_p = dest; - start_l = lines; - - while (lines--) { - /* packet count */ - packets = *data++; - - while (packets--) { - /* skip count */ - dest += *data++; - - /* RLE count */ - count = *data++; - - if (count > 0x7f) { - /* literal run */ - count = 0x100 - count; - x = *data++; - - while (count--) - *dest++ = x; - - } else { - /* replicate run */ - while (count--) - *dest++ = *data++; - } - } - start_p += flxdec->hdr.width; - dest = start_p; - } -} - -static void -flx_decode_delta_flc (GstFlxDec * flxdec, guchar * data, guchar * dest) -{ - gulong count, lines, start_l, opcode; - guchar *start_p; - - g_return_if_fail (flxdec != NULL); - g_return_if_fail (flxdec->delta != NULL); - - - /* use last frame for delta */ - memcpy (dest, GST_BUFFER_DATA (flxdec->delta), - GST_BUFFER_SIZE (flxdec->delta)); - - lines = (data[0] + (data[1] << 8)); - data += 2; - - start_p = dest; - start_l = lines; - - while (lines) { - dest = start_p + (flxdec->hdr.width * (start_l - lines)); - - /* process opcode(s) */ - while ((opcode = (data[0] + (data[1] << 8))) & 0xc000) { - data += 2; - if ((opcode & 0xc000) == 0xc000) { - /* skip count */ - start_l += (0x10000 - opcode); - dest += flxdec->hdr.width * (0x10000 - opcode); - } else { - /* last pixel */ - dest += flxdec->hdr.width; - *dest++ = (opcode & 0xff); - } - } - data += 2; - - /* last opcode is the packet count */ - while (opcode--) { - /* skip count */ - dest += *data++; - - /* RLE count */ - count = *data++; - - if (count > 0x7f) { - /* replicate word run */ - count = 0x100 - count; - while (count--) { - *dest++ = data[0]; - *dest++ = data[1]; - } - data += 2; - } else { - /* literal word run */ - while (count--) { - *dest++ = *data++; - *dest++ = *data++; - } - } - } - lines--; - } -} - -static GstBuffer * -flx_get_data (GstFlxDec * flxdec, gulong size) -{ - GstBuffer *retbuf; - guint32 got_bytes; - - g_return_val_if_fail (flxdec != NULL, NULL); - - got_bytes = gst_bytestream_read (flxdec->bs, &retbuf, size); - if (got_bytes < size) { - GstEvent *event; - guint32 remaining; - - gst_bytestream_get_status (flxdec->bs, &remaining, &event); - gst_pad_event_default (flxdec->sinkpad, event); - } - - return retbuf; -} - - -static void -gst_flxdec_loop (GstElement * element) -{ - GstBuffer *buf; - GstBuffer *databuf; - guchar *data, *chunk; - GstCaps *caps; - - GstFlxDec *flxdec; - FlxHeader *flxh; - FlxFrameChunk *flxfh; - - g_return_if_fail (element != NULL); - g_return_if_fail (GST_IS_FLXDEC (element)); - - GST_DEBUG ("entering loop function"); - - flxdec = GST_FLXDEC (element); - - if (flxdec->state == GST_FLXDEC_READ_HEADER) { - databuf = flx_get_data (flxdec, FlxHeaderSize); - - if (!databuf) { - GST_LOG ("empty buffer"); - return; - } - - data = GST_BUFFER_DATA (databuf); - - memcpy ((char *) &flxdec->hdr, data, sizeof (FlxHeader)); - - gst_buffer_unref (databuf); - - flxh = &flxdec->hdr; - - /* check header */ - if (flxh->type != FLX_MAGICHDR_FLI && - flxh->type != FLX_MAGICHDR_FLC && flxh->type != FLX_MAGICHDR_FLX) { - GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL), - ("not a flx file (type %d)\n", flxh->type)); - return; - } - - - GST_LOG ("size : %d\n", flxh->size); - GST_LOG ("frames : %d\n", flxh->frames); - GST_LOG ("width : %d\n", flxh->width); - GST_LOG ("height : %d\n", flxh->height); - GST_LOG ("depth : %d\n", flxh->depth); - GST_LOG ("speed : %d\n", flxh->speed); - - flxdec->next_time = 0; - - if (flxh->type == FLX_MAGICHDR_FLI) { - flxdec->frame_time = JIFFIE * flxh->speed; - } else { - flxdec->frame_time = flxh->speed * GST_MSECOND; - } - - caps = gst_caps_from_string (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN); - gst_caps_set_simple (caps, - "width", G_TYPE_INT, flxh->width, - "height", G_TYPE_INT, flxh->height, - "framerate", G_TYPE_DOUBLE, (gdouble) (GST_SECOND / flxdec->frame_time), - NULL); - - gst_pad_set_explicit_caps (flxdec->srcpad, caps); - - if (flxh->depth <= 8) - flxdec->converter = - flx_colorspace_converter_new (flxh->width, flxh->height); - - if (flxh->type == FLX_MAGICHDR_FLC || flxh->type == FLX_MAGICHDR_FLX) { - GST_LOG ("(FLC) aspect_dx : %d\n", flxh->aspect_dx); - GST_LOG ("(FLC) aspect_dy : %d\n", flxh->aspect_dy); - GST_LOG ("(FLC) oframe1 : 0x%08x\n", flxh->oframe1); - GST_LOG ("(FLC) oframe2 : 0x%08x\n", flxh->oframe2); - } - - flxdec->size = (flxh->width * flxh->height); - - /* create delta and output frame */ - flxdec->frame = gst_buffer_new (); - flxdec->delta = gst_buffer_new (); - GST_BUFFER_DATA (flxdec->frame) = g_malloc (flxdec->size); - GST_BUFFER_SIZE (flxdec->frame) = flxdec->size; - GST_BUFFER_DATA (flxdec->delta) = g_malloc (flxdec->size); - GST_BUFFER_SIZE (flxdec->delta) = flxdec->size; - - flxdec->state = GST_FLXDEC_PLAYING; - } else if (flxdec->state == GST_FLXDEC_PLAYING) { - GstBuffer *out; - - databuf = flx_get_data (flxdec, FlxFrameChunkSize); - if (!databuf) - return; - - flxfh = (FlxFrameChunk *) GST_BUFFER_DATA (databuf); - - switch (flxfh->id) { - case FLX_FRAME_TYPE: - buf = flx_get_data (flxdec, flxfh->size - FlxFrameChunkSize); - - chunk = GST_BUFFER_DATA (buf); - - if (((FlxFrameType *) chunk)->chunks == 0) - break; - - /* create 32 bits output frame */ - out = gst_buffer_new (); - GST_BUFFER_DATA (out) = g_malloc (flxdec->size * 4); - GST_BUFFER_SIZE (out) = flxdec->size * 4; - - /* decode chunks */ - flx_decode_chunks (flxdec, - ((FlxFrameType *) chunk)->chunks, - GST_BUFFER_DATA (buf) + FlxFrameTypeSize, - GST_BUFFER_DATA (flxdec->frame)); - - /* destroy input buffer */ - gst_buffer_unref (buf); - - /* save copy of the current frame for possible delta. */ - memcpy (GST_BUFFER_DATA (flxdec->delta), - GST_BUFFER_DATA (flxdec->frame), GST_BUFFER_SIZE (flxdec->delta)); - - /* convert current frame. */ - flx_colorspace_convert (flxdec->converter, - GST_BUFFER_DATA (flxdec->frame), GST_BUFFER_DATA (out)); - - GST_BUFFER_TIMESTAMP (out) = flxdec->next_time; - flxdec->next_time += flxdec->frame_time; - - gst_pad_push (flxdec->srcpad, GST_DATA (out)); - - break; - } - - /* destroy header buffer */ - gst_buffer_unref (databuf); - } -} - -static GstElementStateReturn -gst_flxdec_change_state (GstElement * element) -{ - GstFlxDec *flxdec; - - flxdec = GST_FLXDEC (element); - - switch (GST_STATE_TRANSITION (element)) { - case GST_STATE_NULL_TO_READY: - break; - case GST_STATE_READY_TO_PAUSED: - flxdec->bs = gst_bytestream_new (flxdec->sinkpad); - flxdec->state = GST_FLXDEC_READ_HEADER; - break; - case GST_STATE_PAUSED_TO_PLAYING: - break; - case GST_STATE_PLAYING_TO_PAUSED: - break; - case GST_STATE_PAUSED_TO_READY: - gst_buffer_unref (flxdec->frame); - flxdec->frame = NULL; - gst_buffer_unref (flxdec->delta); - flxdec->delta = NULL; - gst_bytestream_destroy (flxdec->bs); - break; - case GST_STATE_READY_TO_NULL: - break; - } - - parent_class->change_state (element); - - return GST_STATE_SUCCESS; -} - -static void -gst_flxdec_set_property (GObject * object, guint prop_id, const GValue * value, - GParamSpec * pspec) -{ - GstFlxDec *flxdec; - - g_return_if_fail (GST_IS_FLXDEC (object)); - flxdec = GST_FLXDEC (object); - - switch (prop_id) { - default: - break; - } -} - -static void -gst_flxdec_get_property (GObject * object, guint prop_id, GValue * value, - GParamSpec * pspec) -{ - GstFlxDec *flxdec; - - g_return_if_fail (GST_IS_FLXDEC (object)); - flxdec = GST_FLXDEC (object); - - switch (prop_id) { - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static gboolean -plugin_init (GstPlugin * plugin) -{ - if (!gst_library_load ("gstbytestream")) - return FALSE; - - return gst_element_register (plugin, "flxdec", - GST_RANK_PRIMARY, GST_TYPE_FLXDEC); -} - -GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, - GST_VERSION_MINOR, - "flxdec", - "FLX video decoder", - plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN) |