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-rw-r--r--sys/vdpau/Makefile.am10
-rw-r--r--sys/vdpau/gstvdpaudecoder.c4
-rw-r--r--sys/vdpau/gstvdpaumpegdecoder.c29
-rw-r--r--sys/vdpau/gstvdpaumpegdecoder.h4
-rw-r--r--sys/vdpau/mpegutil.c227
-rw-r--r--sys/vdpau/mpegutil.h63
6 files changed, 325 insertions, 12 deletions
diff --git a/sys/vdpau/Makefile.am b/sys/vdpau/Makefile.am
index 94f7efbc..f66c4aa4 100644
--- a/sys/vdpau/Makefile.am
+++ b/sys/vdpau/Makefile.am
@@ -1,8 +1,9 @@
plugin_LTLIBRARIES = libgstvdpau.la
libgstvdpau_la_SOURCES = \
- gstvdpaudecoder.c\
- gstvdpaumpegdecoder.c
+ gstvdpaudecoder.c \
+ gstvdpaumpegdecoder.c \
+ mpegutil.c
libgstvdpau_la_CFLAGS = $(GST_CFLAGS) $(X11_CFLAGS) -Ivdpau
libgstvdpau_la_LIBADD = $(GST_LIBS) $(X11_LIBS) -lvdpau
@@ -10,8 +11,9 @@ libgstvdpau_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstvdpau_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = \
- gstvdpaudecoder.h\
+ gstvdpaudecoder.h \
vdpauvariables.h \
- gstvdpaumpegdecoder.h
+ gstvdpaumpegdecoder.h \
+ mpegutil.h
diff --git a/sys/vdpau/gstvdpaudecoder.c b/sys/vdpau/gstvdpaudecoder.c
index 36a566e0..7d4ecb39 100644
--- a/sys/vdpau/gstvdpaudecoder.c
+++ b/sys/vdpau/gstvdpaudecoder.c
@@ -302,6 +302,8 @@ gst_vdpaudecoder_sink_set_caps (GstPad * pad, GstCaps * caps)
&framerate_numerator, &framerate_denominator);
src_caps = gst_pad_get_allowed_caps (dec->src);
+ if (G_UNLIKELY (!src_caps))
+ return FALSE;
structure = gst_caps_get_structure (src_caps, 0);
gst_structure_get_fourcc (structure, "format", &fourcc_format);
@@ -318,7 +320,7 @@ gst_vdpaudecoder_sink_set_caps (GstPad * pad, GstCaps * caps)
gst_caps_unref (new_caps);
- if (!res)
+ if (G_UNLIKELY (!res))
return FALSE;
dec->width = width;
diff --git a/sys/vdpau/gstvdpaumpegdecoder.c b/sys/vdpau/gstvdpaumpegdecoder.c
index 380cf602..e5da459f 100644
--- a/sys/vdpau/gstvdpaumpegdecoder.c
+++ b/sys/vdpau/gstvdpaumpegdecoder.c
@@ -1,7 +1,5 @@
/*
* GStreamer
- * Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
- * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -62,6 +60,7 @@
#include <gst/gst.h>
+#include "mpegutil.h"
#include "gstvdpaumpegdecoder.h"
GST_DEBUG_CATEGORY_STATIC (gst_vdpau_mpeg_decoder_debug);
@@ -88,7 +87,7 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/mpeg, mpegversion = (int) [ 1, 2 ], "
- "systemstream = (boolean) false")
+ "systemstream = (boolean) false, parsed = (boolean) true")
);
GST_BOILERPLATE (GstVdpauMpegDecoder, gst_vdpau_mpeg_decoder, GstVdpauDecoder,
@@ -104,11 +103,33 @@ gst_vdpau_mpeg_decoder_set_caps (GstVdpauDecoder * dec, GstCaps * caps)
{
GstVdpauMpegDecoder *mpeg_dec;
GstStructure *structure;
+ gint version;
mpeg_dec = GST_VDPAU_MPEG_DECODER (dec);
structure = gst_caps_get_structure (caps, 0);
- gst_structure_get_int (structure, "mpegversion", &mpeg_dec->version);
+ gst_structure_get_int (structure, "mpegversion", &version);
+ if (version == 1)
+ mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG1;
+
+ else {
+ const GValue *value;
+ GstBuffer *codec_data;
+ MPEGSeqHdr hdr = { 0, };
+
+ value = gst_structure_get_value (structure, "codec_data");
+ codec_data = gst_value_get_buffer (value);
+ mpeg_util_parse_sequence_hdr (&hdr, GST_BUFFER_DATA (codec_data),
+ GST_BUFFER_DATA (codec_data) + GST_BUFFER_SIZE (codec_data));
+ switch (hdr.profile) {
+ case 5:
+ mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
+ break;
+ default:
+ mpeg_dec->profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
+ break;
+ }
+ }
return TRUE;
}
diff --git a/sys/vdpau/gstvdpaumpegdecoder.h b/sys/vdpau/gstvdpaumpegdecoder.h
index 97462942..830cc671 100644
--- a/sys/vdpau/gstvdpaumpegdecoder.h
+++ b/sys/vdpau/gstvdpaumpegdecoder.h
@@ -1,7 +1,5 @@
/*
* GStreamer
- * Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
- * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -68,7 +66,7 @@ struct _GstVdpauMpegDecoder
gboolean silent;
- gint version;
+ VdpDecoderProfile profile;
};
struct _GstVdpauMpegDecoderClass
diff --git a/sys/vdpau/mpegutil.c b/sys/vdpau/mpegutil.c
new file mode 100644
index 00000000..274fa853
--- /dev/null
+++ b/sys/vdpau/mpegutil.c
@@ -0,0 +1,227 @@
+/* GStreamer
+ * Copyright (C) 2007 Jan Schmidt <thaytan@mad.scientist.com>
+ * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.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.
+ */
+
+#include "mpegutil.h"
+
+guint8 bits[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
+
+guint32
+read_bits (guint8 * buf, gint start_bit, gint n_bits)
+{
+ gint i;
+ guint32 ret = 0x00;
+
+ buf += start_bit / 8;
+ start_bit %= 8;
+
+ for (i = 0; i < n_bits; i++) {
+ guint32 tmp;
+
+ tmp = ((*buf & bits[start_bit]) >> (7 - start_bit));
+ ret = (ret | (tmp << (n_bits - i - 1)));
+ if (++start_bit == 8) {
+ buf += 1;
+ start_bit = 0;
+ }
+ }
+
+ return ret;
+}
+
+guint8 *
+mpeg_util_find_start_code (guint32 * sync_word, guint8 * cur, guint8 * end)
+{
+ guint32 code;
+
+ if (G_UNLIKELY (cur == NULL))
+ return NULL;
+
+ code = *sync_word;
+
+ while (cur < end) {
+ code <<= 8;
+
+ if (code == 0x00000100) {
+ /* Reset the sync word accumulator */
+ *sync_word = 0xffffffff;
+ return cur;
+ }
+
+ /* Add the next available byte to the collected sync word */
+ code |= *cur++;
+ }
+
+ *sync_word = code;
+ return NULL;
+}
+
+static void
+set_fps_from_code (MPEGSeqHdr * hdr, guint8 fps_code)
+{
+ const gint framerates[][2] = {
+ {30, 1}, {24000, 1001}, {24, 1}, {25, 1},
+ {30000, 1001}, {30, 1}, {50, 1}, {60000, 1001},
+ {60, 1}, {30, 1}
+ };
+
+ if (fps_code < 10) {
+ hdr->fps_n = framerates[fps_code][0];
+ hdr->fps_d = framerates[fps_code][1];
+ } else {
+ /* Force a valid framerate */
+ hdr->fps_n = 30000;
+ hdr->fps_d = 1001;
+ }
+}
+
+/* Set the Pixel Aspect Ratio in our hdr from a DAR code in the data */
+static void
+set_par_from_dar (MPEGSeqHdr * hdr, guint8 asr_code)
+{
+ /* Pixel_width = DAR_width * display_vertical_size */
+ /* Pixel_height = DAR_height * display_horizontal_size */
+ switch (asr_code) {
+ case 0x02: /* 3:4 DAR = 4:3 pixels */
+ hdr->par_w = 4 * hdr->height;
+ hdr->par_h = 3 * hdr->width;
+ break;
+ case 0x03: /* 9:16 DAR */
+ hdr->par_w = 16 * hdr->height;
+ hdr->par_h = 9 * hdr->width;
+ break;
+ case 0x04: /* 1:2.21 DAR */
+ hdr->par_w = 221 * hdr->height;
+ hdr->par_h = 100 * hdr->width;
+ break;
+ case 0x01: /* Square pixels */
+ default:
+ hdr->par_w = hdr->par_h = 1;
+ break;
+ }
+}
+
+static gboolean
+mpeg_util_parse_extension_packet (MPEGSeqHdr * hdr, guint8 * data, guint8 * end)
+{
+ guint8 ext_code;
+
+ if (G_UNLIKELY (data >= end))
+ return FALSE; /* short extension packet */
+
+ ext_code = data[0] >> 4;
+
+ switch (ext_code) {
+ case MPEG_PACKET_EXT_SEQUENCE:
+ {
+ /* Parse a Sequence Extension */
+ guint8 horiz_size_ext, vert_size_ext;
+ guint8 fps_n_ext, fps_d_ext;
+
+ if (G_UNLIKELY ((end - data) < 6))
+ /* need at least 10 bytes, minus 4 for the start code 000001b5 */
+ return FALSE;
+
+ horiz_size_ext = ((data[1] << 1) & 0x02) | ((data[2] >> 7) & 0x01);
+ vert_size_ext = (data[2] >> 5) & 0x03;
+ hdr->profile = read_bits (data, 7, 3);
+ fps_n_ext = (data[5] >> 5) & 0x03;
+ fps_d_ext = data[5] & 0x1f;
+
+ hdr->fps_n *= (fps_n_ext + 1);
+ hdr->fps_d *= (fps_d_ext + 1);
+ hdr->width += (horiz_size_ext << 12);
+ hdr->height += (vert_size_ext << 12);
+ break;
+ }
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+gboolean
+mpeg_util_parse_sequence_hdr (MPEGSeqHdr * hdr, guint8 * data, guint8 * end)
+{
+ guint32 code;
+ guint8 dar_idx, fps_idx;
+ guint32 sync_word = 0xffffffff;
+ gboolean constrained_flag;
+ gboolean load_intra_flag;
+ gboolean load_non_intra_flag;
+
+ if (G_UNLIKELY ((end - data) < 12))
+ return FALSE; /* Too small to be a sequence header */
+
+ code = GST_READ_UINT32_BE (data);
+ if (G_UNLIKELY (code != (0x00000100 | MPEG_PACKET_SEQUENCE)))
+ return FALSE;
+
+ /* Skip the sync word */
+ data += 4;
+
+ /* Parse the MPEG 1 bits */
+ hdr->mpeg_version = 1;
+
+ code = GST_READ_UINT32_BE (data);
+ hdr->width = (code >> 20) & 0xfff;
+ hdr->height = (code >> 8) & 0xfff;
+
+ dar_idx = (code >> 4) & 0xf;
+ set_par_from_dar (hdr, dar_idx);
+ fps_idx = code & 0xf;
+ set_fps_from_code (hdr, fps_idx);
+
+ constrained_flag = (data[7] >> 2) & 0x01;
+ load_intra_flag = (data[7] >> 1) & 0x01;
+ if (load_intra_flag) {
+ if (G_UNLIKELY ((end - data) < 64))
+ return FALSE;
+ data += 64;
+ }
+
+ load_non_intra_flag = data[7] & 0x01;
+ if (load_non_intra_flag) {
+ if (G_UNLIKELY ((end - data) < 64))
+ return FALSE;
+ data += 64;
+ }
+
+ /* Advance past the rest of the MPEG-1 header */
+ data += 8;
+
+ /* Read MPEG-2 sequence extensions */
+ data = mpeg_util_find_start_code (&sync_word, data, end);
+ while (data != NULL) {
+ if (G_UNLIKELY (data >= end))
+ return FALSE;
+
+ /* data points at the last byte of the start code */
+ if (data[0] == MPEG_PACKET_EXTENSION) {
+ if (!mpeg_util_parse_extension_packet (hdr, data + 1, end))
+ return FALSE;
+
+ hdr->mpeg_version = 2;
+ }
+ data = mpeg_util_find_start_code (&sync_word, data, end);
+ }
+
+ return TRUE;
+}
diff --git a/sys/vdpau/mpegutil.h b/sys/vdpau/mpegutil.h
new file mode 100644
index 00000000..f0f8aca0
--- /dev/null
+++ b/sys/vdpau/mpegutil.h
@@ -0,0 +1,63 @@
+/* GStreamer
+ * Copyright (C) 2007 Jan Schmidt <thaytan@mad.scientist.com>
+ * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.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.
+ */
+
+#ifndef __MPEGUTIL_H__
+#define __MPEGUTIL_H__
+
+#include <gst/gst.h>
+
+typedef struct MPEGSeqHdr MPEGSeqHdr;
+
+/* Packet ID codes for different packet types we
+ * care about */
+#define MPEG_PACKET_PICTURE 0x00
+#define MPEG_PACKET_SLICE_MIN 0x01
+#define MPEG_PACKET_SLICE_MAX 0xaf
+#define MPEG_PACKET_SEQUENCE 0xb3
+#define MPEG_PACKET_EXTENSION 0xb5
+#define MPEG_PACKET_SEQUENCE_END 0xb7
+#define MPEG_PACKET_GOP 0xb8
+#define MPEG_PACKET_NONE 0xff
+
+/* Extension codes we care about */
+#define MPEG_PACKET_EXT_SEQUENCE 0x01
+#define MPEG_PACKET_EXT_SEQUENCE_DISPLAY 0x02
+#define MPEG_PACKET_EXT_QUANT_MATRIX 0x03
+
+struct MPEGSeqHdr
+{
+ /* 0 for unknown, else 1 or 2 */
+ guint8 mpeg_version;
+
+ /* Pixel-Aspect Ratio from DAR code via set_par_from_dar */
+ gint par_w, par_h;
+ /* Width and Height of the video */
+ gint width, height;
+ /* Framerate */
+ gint fps_n, fps_d;
+
+ /* mpeg2 decoder profile */
+ gint profile;
+};
+
+gboolean mpeg_util_parse_sequence_hdr (MPEGSeqHdr *hdr,
+ guint8 *data, guint8 *end);
+
+#endif
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