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codecparsers: mpeg: Add an mpeg video bitstream parsing library

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Create a new codecparsers library
This commit is contained in:
Thibault Saunier 2011-07-19 13:52:01 +02:00 committed by Edward Hervey
parent 4ca79463fc
commit c64b99339c
12 changed files with 1409 additions and 3 deletions
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1
configure.ac
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@ -1946,6 +1946,7 @@ gst-libs/gst/Makefile
gst-libs/gst/basecamerabinsrc/Makefile
gst-libs/gst/interfaces/Makefile
gst-libs/gst/signalprocessor/Makefile
gst-libs/gst/codecparsers/Makefile
gst-libs/gst/video/Makefile
sys/Makefile
sys/dshowdecwrapper/Makefile

10
docs/libs/gst-plugins-bad-libs-docs.sgml
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@ -20,6 +20,16 @@
package.
</para>
<xi:include href="compiling.sgml" />
<chapter id="codecparsers">
<title>Bitstream parsing Library</title>
<para>
This library should be linked to by getting cflags and libs from
<filename>gstreamer-plugins-bad-&GST_MAJORMINOR;.pc</filename> and adding
<filename>-lgscodeparsers-&GST_MAJORMINOR;</filename> to the library flags.
</para>
<xi:include href="xml/gstmpegvideoparser.xml" />
</chapter>
</part>
<part id="gstreamer-libs-hierarchy">

28
docs/libs/gst-plugins-bad-libs-sections.txt
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@ -0,0 +1,28 @@
# codecparsers
<SECTION>
<FILE>gstmpegvideoparser</FILE>
<TITLE>mpegvideoparser</TITLE>
<INCLUDE>gst/codecparsers/gstmpegvideoparser.h</INCLUDE>
GstMpegVideoPacketTypeCode
GstMpegVideoPacketExtensionCode
GstMpegVideoLevel
GstMpegVideoProfile
GstMpegVideoPictureType
GstMpegVideoPictureStructure
GstMpegVideoSequenceHdr
GstMpegVideoSequenceExt
GstMpegVideoPictureHdr
GstMpegVideoGop
GstMpegVideoPictureExt
GstMpegVideoQuantMatrixExt
GstMpegVideoTypeOffsetSize
gst_mpeg_video_parse
gst_mpeg_video_parse_sequence_header
gst_mpeg_video_parse_picture_header
gst_mpeg_video_parse_picture_extension
gst_mpeg_video_parse_gop
gst_mpeg_video_parse_sequence_extension
gst_mpeg_video_parse_quant_matrix_extension
<SUBSECTION Standard>
<SUBSECTION Private>
</SECTION>

2
docs/libs/gst-plugins-bad-libs.types
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@ -1 +1,3 @@
#include <gst/gst.h>
#include <gst/codecparsers/gstmpegvideoparser.h>

4
gst-libs/gst/Makefile.am
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@ -1,6 +1,6 @@
SUBDIRS = interfaces signalprocessor video basecamerabinsrc
SUBDIRS = interfaces signalprocessor video basecamerabinsrc codecparsers
noinst_HEADERS = gst-i18n-plugin.h gettext.h
DIST_SUBDIRS = interfaces signalprocessor video basecamerabinsrc
DIST_SUBDIRS = interfaces signalprocessor video basecamerabinsrc codecparsers

29
gst-libs/gst/codecparsers/Makefile.am Normal file
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@ -0,0 +1,29 @@
lib_LTLIBRARIES = libgstcodecparsers-@GST_MAJORMINOR@.la
libgstcodecparsers_@GST_MAJORMINOR@_la_SOURCES = gstmpegvideoparser.c
libgstcodecparsers_@GST_MAJORMINOR@includedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/codecparsers
libgstcodecparsers_@GST_MAJORMINOR@include_HEADERS = \
gstmpegvideoparser.h
libgstcodecparsers_@GST_MAJORMINOR@_la_CFLAGS = $(GST_PLUGINS_BAD_CFLAGS) $(GST_CFLAGS)
libgstcodecparsers_@GST_MAJORMINOR@_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS)
libgstcodecparsers_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
Android.mk: $(BUILT_SOURCES) Makefile.am
androgenizer -:PROJECT libgstcodecparsers -:STATIC libgstcodecparsers-@GST_MAJORMINOR@ \
-:TAGS eng debug \
-:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \
-:SOURCES $(libgstcodecparsers_@GST_MAJORMINOR@_la_SOURCES) \
$(built_sources) \
-:CFLAGS $(DEFS) $(libgstcodecparsers_@GST_MAJORMINOR@_la_CFLAGS) \
-:LDFLAGS $(libgstcodecparsers_@GST_MAJORMINOR@_la_LDFLAGS) \
$(libgstcodecparsers@GST_MAJORMINOR@_la_LIBADD) \
-ldl \
-:HEADER_TARGET gstreamer-@GST_MAJORMINOR@/gst/codecparsers \
-:HEADERS $(libgstcodecparsersinclude_HEADERS) \
$(built_headers) \
-:PASSTHROUGH LOCAL_ARM_MODE:=arm \
> $@

749
gst-libs/gst/codecparsers/gstmpegvideoparser.c Normal file
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@ -0,0 +1,749 @@
/* Gstreamer
* Copyright (C) <2011> Intel Corporation
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
*
* From bad/sys/vdpau/mpeg/mpegutil.c:
* 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.
*/
/**
* SECTION:gstmpegvideoparser
* @short_description: Convenience library for mpeg1 and 2 video
* bitstream parsing.
*
* <refsect2>
* <para>
* Provides useful functions for mpeg videos bitstream parsing.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstmpegvideoparser.h"
#include <string.h>
#include <gst/base/gstbitreader.h>
#include <gst/base/gstbytereader.h>
#define MARKER_BIT 0x1
#define GET_BITS(b, num, bits) G_STMT_START { \
if (!gst_bit_reader_get_bits_uint32(b, bits, num)) \
goto failed; \
GST_TRACE ("parsed %d bits: %d", num, *(bits)); \
} G_STMT_END
#define READ_UINT8(br, val, nbits) G_STMT_START { \
if (!gst_bit_reader_get_bits_uint8 (br, &val, nbits)) { \
GST_WARNING ("failed to read uint8, nbits: %d", nbits); \
goto failed; \
} \
} G_STMT_END
#define READ_UINT16(br, val, nbits) G_STMT_START { \
if (!gst_bit_reader_get_bits_uint16 (br, &val, nbits)) { \
GST_WARNING ("failed to read uint16, nbits: %d", nbits); \
goto failed; \
} \
} G_STMT_END
#define READ_UINT32(br, val, nbits) G_STMT_START { \
if (!gst_bit_reader_get_bits_uint32 (br, &val, nbits)) { \
GST_WARNING ("failed to read uint32, nbits: %d", nbits); \
goto failed; \
} \
} G_STMT_END
/* default intra quant matrix, in zig-zag order */
const guint8 default_intra_quantizer_matrix[64] = {
8,
16, 16,
19, 16, 19,
22, 22, 22, 22,
22, 22, 26, 24, 26,
27, 27, 27, 26, 26, 26,
26, 27, 27, 27, 29, 29, 29,
34, 34, 34, 29, 29, 29, 27, 27,
29, 29, 32, 32, 34, 34, 37,
38, 37, 35, 35, 34, 35,
38, 38, 40, 40, 40,
48, 48, 46, 46,
56, 56, 58,
69, 69,
83
};
const guint8 mpeg_zigzag_8x8[64] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63
};
GST_DEBUG_CATEGORY (mpegvideo_parser_debug);
#define GST_CAT_DEFAULT mpegvideo_parser_debug
static gboolean initialized = FALSE;
static inline gboolean
find_start_code (GstBitReader * b)
{
guint32 bits;
/* 0 bits until byte aligned */
while (b->bit != 0) {
GET_BITS (b, 1, &bits);
}
/* 0 bytes until startcode */
while (gst_bit_reader_peek_bits_uint32 (b, &bits, 32)) {
if (bits >> 8 == 0x1) {
return TRUE;
} else {
gst_bit_reader_skip (b, 8);
}
}
return FALSE;
failed:
return FALSE;
}
/* Set the Pixel Aspect Ratio in our hdr from a DAR code in the data */
static void
set_par_from_dar (GstMpegVideoSequenceHdr * seqhdr, 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 */
seqhdr->par_w = 4 * seqhdr->height;
seqhdr->par_h = 3 * seqhdr->width;
break;
case 0x03: /* 9:16 DAR */
seqhdr->par_w = 16 * seqhdr->height;
seqhdr->par_h = 9 * seqhdr->width;
break;
case 0x04: /* 1:2.21 DAR */
seqhdr->par_w = 221 * seqhdr->height;
seqhdr->par_h = 100 * seqhdr->width;
break;
case 0x01: /* Square pixels */
seqhdr->par_w = seqhdr->par_h = 1;
break;
default:
GST_DEBUG ("unknown/invalid aspect_ratio_information %d", asr_code);
break;
}
}
static void
set_fps_from_code (GstMpegVideoSequenceHdr * seqhdr, 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 && fps_code < 10) {
seqhdr->fps_n = framerates[fps_code][0];
seqhdr->fps_d = framerates[fps_code][1];
} else {
GST_DEBUG ("unknown/invalid frame_rate_code %d", fps_code);
/* Force a valid framerate */
/* FIXME or should this be kept unknown ?? */
seqhdr->fps_n = 30000;
seqhdr->fps_d = 1001;
}
}
static gboolean
gst_mpeg_video_parse_sequence (GstMpegVideoSequenceHdr * seqhdr,
GstBitReader * br)
{
guint8 bits;
guint8 load_intra_flag, load_non_intra_flag;
/* Setting the height/width codes */
READ_UINT16 (br, seqhdr->width, 12);
READ_UINT16 (br, seqhdr->height, 12);
READ_UINT8 (br, seqhdr->aspect_ratio_info, 4);
set_par_from_dar (seqhdr, seqhdr->aspect_ratio_info);
READ_UINT8 (br, seqhdr->frame_rate_code, 4);
set_fps_from_code (seqhdr, seqhdr->frame_rate_code);
READ_UINT32 (br, seqhdr->bitrate_value, 18);
if (seqhdr->bitrate_value == 0x3ffff) {
/* VBR stream */
seqhdr->bitrate = 0;
} else {
/* Value in header is in units of 400 bps */
seqhdr->bitrate *= 400;
}
READ_UINT8 (br, bits, 1);
if (bits != MARKER_BIT)
goto failed;
/* VBV buffer size */
READ_UINT16 (br, seqhdr->vbv_buffer_size_value, 10);
/* constrained_parameters_flag */
READ_UINT8 (br, seqhdr->constrained_parameters_flag, 1);
/* load_intra_quantiser_matrix */
READ_UINT8 (br, load_intra_flag, 1);
if (load_intra_flag) {
gint i;
for (i = 0; i < 64; i++)
READ_UINT8 (br, seqhdr->intra_quantizer_matrix[mpeg_zigzag_8x8[i]], 8);
} else
memcpy (seqhdr->intra_quantizer_matrix, default_intra_quantizer_matrix, 64);
/* non intra quantizer matrix */
READ_UINT8 (br, load_non_intra_flag, 1);
if (load_non_intra_flag) {
gint i;
for (i = 0; i < 64; i++)
READ_UINT8 (br, seqhdr->non_intra_quantizer_matrix[mpeg_zigzag_8x8[i]],
8);
} else
memset (seqhdr->non_intra_quantizer_matrix, 16, 64);
/* dump some info */
GST_LOG ("width x height: %d x %d", seqhdr->width, seqhdr->height);
GST_LOG ("fps: %d/%d", seqhdr->fps_n, seqhdr->fps_d);
GST_LOG ("par: %d/%d", seqhdr->par_w, seqhdr->par_h);
GST_LOG ("bitrate: %d", seqhdr->bitrate);
return TRUE;
/* ERRORS */
failed:
{
GST_WARNING ("Failed to parse sequence header");
/* clear out stuff */
memset (seqhdr, 0, sizeof (*seqhdr));
return FALSE;
}
}
static inline guint
scan_for_start_codes (const GstByteReader * reader, guint offset, guint size)
{
const guint8 *data;
guint32 state;
guint i;
g_return_val_if_fail (size > 0, -1);
g_return_val_if_fail ((guint64) offset + size <= reader->size - reader->byte,
-1);
/* we can't find the pattern with less than 4 bytes */
if (G_UNLIKELY (size < 4))
return -1;
data = reader->data + reader->byte + offset;
/* set the state to something that does not match */
state = 0xffffffff;
/* now find data */
for (i = 0; i < size; i++) {
/* throw away one byte and move in the next byte */
state = ((state << 8) | data[i]);
if (G_UNLIKELY ((state & 0xffffff00) == 0x00000100)) {
/* we have a match but we need to have skipped at
* least 4 bytes to fill the state. */
if (G_LIKELY (i >= 3))
return offset + i - 3;
}
/* TODO: reimplement making 010001 not detected as a sc
* Accelerate search for start code
* if (data[i] > 1) {
* while (i < (size - 4) && data[i] > 1) {
* if (data[i + 3] > 1)
* i += 4;
* else
* i += 1;
* }
* state = 0x00000100;
*}
*/
}
/* nothing found */
return -1;
}
/****** API *******/
/**
* gst_mpeg_video_parse:
* @data: The datas from which to parse
* @size: The size of @data
* @offset: The offset from which to start the parsing
*
* Parses @data, and detects the different packets types, offset,
* and size, starting from @offset
*
* Returns: a #GList of #GstMpegVideoTypeOffsetSize
*/
GList *
gst_mpeg_video_parse (guint8 * data, gsize size, guint offset)
{
gint off, rsize;
GstByteReader br;
GList *ret = NULL;
size = size - offset;
if (!initialized) {
GST_DEBUG_CATEGORY_INIT (mpegvideo_parser_debug, "codecparsers_mpegvideo",
0, "Mpegvideo parser library");
initialized = TRUE;
}
if (size <= 0) {
GST_DEBUG ("Can't parse from offset %d, buffer is to small", offset);
return NULL;
}
gst_byte_reader_init (&br, &data[offset], size);
off = scan_for_start_codes (&br, 0, size);
if (off < 0) {
GST_DEBUG ("No start code prefix in this buffer");
return NULL;
}
while (off >= 0 && off + 3 < size) {
GstMpegVideoTypeOffsetSize *codoffsize;
gst_byte_reader_skip (&br, off + 3);
codoffsize = g_malloc (sizeof (GstMpegVideoTypeOffsetSize));
gst_byte_reader_get_uint8 (&br, &codoffsize->type);
codoffsize->offset = gst_byte_reader_get_pos (&br) + offset;
rsize = gst_byte_reader_get_remaining (&br);
if (rsize <= 0)
break;
off = scan_for_start_codes (&br, 0, rsize);
codoffsize->size = off;
ret = g_list_prepend (ret, codoffsize);
codoffsize = ret->data;
}
return g_list_reverse (ret);
}
/**
* gst_mpeg_video_parse_sequence_header:
* @seqhdr: The #GstMpegVideoSequenceHdr to set
* @data: The datas from which to parse the seqhdr
* @size: The size of @data
* @offset: The offset in byte from which to start parsing @data
*
* Sets the @seqhdr Mpeg Video Sequence Header structure members from @data
*
* Returns: %TRUE if the seqhdr could be parsed correctly, %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_sequence_header (GstMpegVideoSequenceHdr * seqhdr,
guint8 * data, gsize size, guint offset)
{
GstBitReader br;
size = size - offset;
if (size - offset < 4)
return FALSE;
gst_bit_reader_init (&br, &data[offset], size);
return gst_mpeg_video_parse_sequence (seqhdr, &br);
}
/**
* gst_mpeg_video_parse_sequence_extension:
* @seqhdr: The #GstMpegVideoSequenceExt to set
* @data: The datas from which to parse the seqext
* @size: The size of @data
* @offset: The offset in byte from which to start parsing @data
*
* Sets the @seqext Mpeg Video Sequence Extension structure members from @data
*
* Returns: %TRUE if the seqext could be parsed correctly, %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_sequence_extension (GstMpegVideoSequenceExt * seqext,
guint8 * data, gsize size, guint offset)
{
GstBitReader br;
size = size - offset;
if (size < 6) {
GST_DEBUG ("not enough bytes to parse the extension");
return FALSE;
}
gst_bit_reader_init (&br, &data[offset], size);
if (gst_bit_reader_get_bits_uint8_unchecked (&br, 4) !=
GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE) {
GST_DEBUG ("Not parsing a sequence extension");
return FALSE;
}
/* skip profile and level escape bit */
gst_bit_reader_skip_unchecked (&br, 1);
seqext->profile = gst_bit_reader_get_bits_uint8_unchecked (&br, 3);
seqext->level = gst_bit_reader_get_bits_uint8_unchecked (&br, 4);
/* progressive */
seqext->progressive = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
/* chroma format */
seqext->chroma_format = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
/* resolution extension */
seqext->horiz_size_ext = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
seqext->vert_size_ext = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
seqext->bitrate_ext = gst_bit_reader_get_bits_uint16_unchecked (&br, 12);
/* skip marker bits */
gst_bit_reader_skip_unchecked (&br, 1);
seqext->vbv_buffer_size_extension =
gst_bit_reader_get_bits_uint8_unchecked (&br, 8);
seqext->low_delay = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
/* framerate extension */
seqext->fps_n_ext = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
seqext->fps_d_ext = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
return TRUE;
}
/**
* gst_mpeg_video_parse_quant_matrix_extension:
* @ext: The #GstMpegVideoQuantMatrixExt to set
* @data: The datas from which to parse @quant
* @size: The size of @data
* @offset: The offset in byte from which to start the parsing
*
* Sets the @quant Mpeg Video Quant Matrix Extension structure members from
* @data
*
* Returns: %TRUE if the quant matrix extension could be parsed correctly,
* %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_quant_matrix_extension (GstMpegVideoQuantMatrixExt * quant,
guint8 * data, gsize size, guint offset)
{
guint8 i;
GstBitReader br;
size = size - offset;
if (size < 1) {
GST_DEBUG ("not enough bytes to parse the extension");
return FALSE;
}
gst_bit_reader_init (&br, &data[offset], size);
if (gst_bit_reader_get_bits_uint8_unchecked (&br, 4) !=
GST_MPEG_VIDEO_PACKET_EXT_QUANT_MATRIX) {
GST_DEBUG ("Not parsing a quant matrix extension");
return FALSE;
}
READ_UINT8 (&br, quant->load_intra_quantiser_matrix, 1);
if (quant->load_intra_quantiser_matrix) {
for (i = 0; i < 64; i++) {
READ_UINT8 (&br, quant->intra_quantiser_matrix[mpeg_zigzag_8x8[i]], 8);
}
}
READ_UINT8 (&br, quant->load_non_intra_quantiser_matrix, 1);
if (quant->load_non_intra_quantiser_matrix) {
for (i = 0; i < 64; i++) {
READ_UINT8 (&br, quant->non_intra_quantiser_matrix[mpeg_zigzag_8x8[i]],
8);
}
}
READ_UINT8 (&br, quant->load_chroma_intra_quantiser_matrix, 1);
if (quant->load_non_intra_quantiser_matrix) {
for (i = 0; i < 64; i++) {
READ_UINT8 (&br, quant->chroma_intra_quantiser_matrix[mpeg_zigzag_8x8[i]],
8);
}
}
READ_UINT8 (&br, quant->load_chroma_non_intra_quantiser_matrix, 1);
if (quant->load_chroma_non_intra_quantiser_matrix) {
for (i = 0; i < 64; i++) {
READ_UINT8 (&br,
quant->chroma_non_intra_quantiser_matrix[mpeg_zigzag_8x8[i]], 8);
}
}
return TRUE;
failed:
GST_WARNING ("error parsing \"Quant Matrix Extension\"");
return FALSE;
}
/**
* gst_mpeg_video_parse_picture_extension:
* @ext: The #GstMpegVideoPictureExt to set
* @data: The datas from which to parse the ext
* @size: The size of @data
* @offset: The offset in byte from which to start the parsing
*
* Sets the @ext Mpeg Video Picture Extension structure members from @data
*
* Returns: %TRUE if the picture extension could be parsed correctly,
* %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_picture_extension (GstMpegVideoPictureExt * ext,
guint8 * data, gsize size, guint offset)
{
GstBitReader br;
size = size - offset;
if (size < 4)
return FALSE;
gst_bit_reader_init (&br, &data[offset], size);
/* f_code */
READ_UINT8 (&br, ext->f_code[0][0], 4);
READ_UINT8 (&br, ext->f_code[0][1], 4);
READ_UINT8 (&br, ext->f_code[1][0], 4);
READ_UINT8 (&br, ext->f_code[1][1], 4);
/* intra DC precision */
READ_UINT8 (&br, ext->intra_dc_precision, 2);
/* picture structure */
READ_UINT8 (&br, ext->picture_structure, 2);
/* top field first */
READ_UINT8 (&br, ext->top_field_first, 1);
/* frame pred frame dct */
READ_UINT8 (&br, ext->frame_pred_frame_dct, 1);
/* concealment motion vectors */
READ_UINT8 (&br, ext->concealment_motion_vectors, 1);
/* q scale type */
READ_UINT8 (&br, ext->q_scale_type, 1);
/* intra vlc format */
READ_UINT8 (&br, ext->intra_vlc_format, 1);
/* alternate scan */
READ_UINT8 (&br, ext->alternate_scan, 1);
/* repeat first field */
READ_UINT8 (&br, ext->repeat_first_field, 1);
/* chroma_420_type */
READ_UINT8 (&br, ext->chroma_420_type, 1);
/* progressive_frame */
READ_UINT8 (&br, ext->progressive_frame, 1);
/* composite display */
READ_UINT8 (&br, ext->composite_display, 1);
if (ext->composite_display) {
/* v axis */
READ_UINT8 (&br, ext->v_axis, 1);
/* field sequence */
READ_UINT8 (&br, ext->field_sequence, 3);
/* sub carrier */
READ_UINT8 (&br, ext->sub_carrier, 1);
/* burst amplitude */
READ_UINT8 (&br, ext->burst_amplitude, 7);
/* sub_carrier phase */
READ_UINT8 (&br, ext->sub_carrier_phase, 8);
}
return TRUE;
failed:
GST_WARNING ("error parsing \"Picture Coding Extension\"");
return FALSE;
}
/**
* gst_mpeg_video_parse_picture_header:
* @hdr: The #GstMpegVideoPictureHdr to set
* @data: The datas from which to parse the hdr
* @size: The size of @data
* @offset: The offset in byte from which to start the parsing
*
* Sets the @hdr Mpeg Video Picture Header structure members from @data
*
* Returns: %TRUE if the picture sequence could be parsed correctly, %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_picture_header (GstMpegVideoPictureHdr * hdr,
guint8 * data, gsize size, guint offset)
{
GstBitReader br;
size = size - offset;
if (size < 4)
return FALSE;
gst_bit_reader_init (&br, &data[offset], size);
/* temperal sequence number */
if (!gst_bit_reader_get_bits_uint16 (&br, &hdr->tsn, 10))
return FALSE;
/* frame type */
if (!gst_bit_reader_get_bits_uint8 (&br, (guint8 *) & hdr->pic_type, 3))
return FALSE;
if (hdr->pic_type == 0 || hdr->pic_type > 4)
return FALSE; /* Corrupted picture packet */
/* skype VBV delay */
if (!gst_bit_reader_skip (&br, 8))
return FALSE;
if (hdr->pic_type == GST_MPEG_VIDEO_PICTURE_TYPE_P
|| hdr->pic_type == GST_MPEG_VIDEO_PICTURE_TYPE_B) {
READ_UINT8 (&br, hdr->full_pel_forward_vector, 1);
READ_UINT8 (&br, hdr->f_code[0][0], 3);
hdr->f_code[0][1] = hdr->f_code[0][0];
} else {
hdr->full_pel_forward_vector = 0;
hdr->f_code[0][0] = hdr->f_code[0][1] = 0;
}
if (hdr->pic_type == GST_MPEG_VIDEO_PICTURE_TYPE_B) {
READ_UINT8 (&br, hdr->full_pel_backward_vector, 1);
READ_UINT8 (&br, hdr->f_code[1][0], 3);
hdr->f_code[1][1] = hdr->f_code[1][0];
} else {
hdr->full_pel_backward_vector = 0;
hdr->f_code[1][0] = hdr->f_code[1][1] = 0;
}
return TRUE;
failed:
{
GST_WARNING ("Failed to parse sequence extension");
return FALSE;
}
}
/**
* gst_mpeg_video_parse_gop:
* @gop: The #GstMpegVideoGop to set
* @data: The datas from which to parse the gop
* @size: The size of @data
* @offset: The offset in byte from which to start the parsing
*
*
* Sets the @gop Mpeg Video Group of Picture structure members from @data
*
* Returns: %TRUE if the gop could be parsed correctly, %FALSE otherwize.
*/
gboolean
gst_mpeg_video_parse_gop (GstMpegVideoGop * gop, guint8 * data,
gsize size, guint offset)
{
GstBitReader br;
size = size - offset;
if (size < 4)
return FALSE;
gst_bit_reader_init (&br, &data[offset], size);
READ_UINT8 (&br, gop->drop_frame_flag, 1);
READ_UINT8 (&br, gop->hour, 5);
READ_UINT8 (&br, gop->minute, 6);
/* skip unused bit */
if (!gst_bit_reader_skip (&br, 1))
return FALSE;
READ_UINT8 (&br, gop->second, 6);
READ_UINT8 (&br, gop->frame, 6);
READ_UINT8 (&br, gop->closed_gop, 1);
READ_UINT8 (&br, gop->broken_gop, 1);
return TRUE;
failed:
GST_WARNING ("error parsing \"GOP\"");
return FALSE;
}

365
gst-libs/gst/codecparsers/gstmpegvideoparser.h Normal file
View file

@ -0,0 +1,365 @@
/* Gstreamer
* Copyright (C) <2011> Intel Corporation
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
*
* From bad/sys/vdpau/mpeg/mpegutil.c:
* 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 __GST_MPEG_VIDEO_UTILS_H__
#define __GST_MPEG_VIDEO_UTILS_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/**
* GstMpegVideoPacketTypeCode:
* @GST_MPEG_VIDEO_PACKET_PICTURE: Picture packet starting code
* @GST_MPEG_VIDEO_PACKET_SLICE_MIN: Picture packet starting code
* @GST_MPEG_VIDEO_PACKET_SLICE_MAX: Slice max packet starting code
* @GST_MPEG_VIDEO_PACKET_SEQUENCE : Sequence packet starting code
* @GST_MPEG_VIDEO_PACKET_EXTENSION: Extension packet starting code
* @GST_MPEG_VIDEO_PACKET_SEQUENCE_END: Sequence end packet code
* @GST_MPEG_VIDEO_PACKET_GOP: Group of Picture packet starting code
* @GST_MPEG_VIDEO_PACKET_NONE: None packet code
*
* Indicates the type of MPEG packet
*/
typedef enum {
GST_MPEG_VIDEO_PACKET_PICTURE = 0x00,
GST_MPEG_VIDEO_PACKET_SLICE_MIN = 0x01,
GST_MPEG_VIDEO_PACKET_SLICE_MAX = 0xaf,
GST_MPEG_VIDEO_PACKET_SEQUENCE = 0xb3,
GST_MPEG_VIDEO_PACKET_EXTENSION = 0xb5,
GST_MPEG_VIDEO_PACKET_SEQUENCE_END = 0xb7,
GST_MPEG_VIDEO_PACKET_GOP = 0xb8,
GST_MPEG_VIDEO_PACKET_NONE = 0xff
} GstMpegVideoPacketTypeCode;
/**
* GstMpegVideoPacketExtensionCode:
* @GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE: Sequence extension code
* @GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE_DISPLAY: Display extension code
* @GST_MPEG_VIDEO_PACKET_EXT_QUANT_MATRIX: Quantizer extension code
* @GST_MPEG_VIDEO_PACKET_EXT_GOP: Group Of Picture extension code
*
* Indicates what type of packets are in this
* block, some are mutually * exclusive though - ie, sequence packs are
* accumulated separately. GOP & Picture may occur together or separately
*/
typedef enum {
GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE = 0x01,
GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE_DISPLAY = 0x02,
GST_MPEG_VIDEO_PACKET_EXT_QUANT_MATRIX = 0x03,
GST_MPEG_VIDEO_PACKET_EXT_GOP = 0x04
} GstMpegVideoPacketExtensionCode;
/**
* GstMpegVideoLevel:
* @GST_MPEG_VIDEO_LEVEL_LOW
* @GST_MPEG_VIDEO_LEVEL_MAIN
* @GST_MPEG_VIDEO_LEVEL_HIGH_1440
* @GST_MPEG_VIDEO_LEVEL_HIGH
*
* Indicates the level in use
**/
typedef enum {
GST_MPEG_VIDEO_LEVEL_HIGH = 0x04,
GST_MPEG_VIDEO_LEVEL_HIGH_1440 = 0x06,
GST_MPEG_VIDEO_LEVEL_MAIN = 0x08,
GST_MPEG_VIDEO_LEVEL_LOW = 0x0a
} GstMpegVideoLevel;
/**
* GstMpegVideoProfile:
* @GST_MPEG_VIDEO_PROFILE_422,
* @GST_MPEG_VIDEO_PROFILE_HIGH,
* @GST_MPEG_VIDEO_PROFILE_SPATIALLY_SCALABLE,
* @GST_MPEG_VIDEO_PROFILE_SNR_SCALABLE,
* @GST_MPEG_VIDEO_PROFILE_MAIN,
* @GST_MPEG_VIDEO_PROFILE_SIMPLE,
*
* Indicates the profile type in use
**/
typedef enum {
GST_MPEG_VIDEO_PROFILE_422 = 0x00,
GST_MPEG_VIDEO_PROFILE_HIGH = 0x01,
GST_MPEG_VIDEO_PROFILE_SPATIALLY_SCALABLE = 0x02,
GST_MPEG_VIDEO_PROFILE_SNR_SCALABLE = 0x03,
GST_MPEG_VIDEO_PROFILE_MAIN = 0x04,
GST_MPEG_VIDEO_PROFILE_SIMPLE = 0x05
} GstMpegVideoProfile;
/**
* GstMpegVideoPictureType:
* @GST_MPEG_VIDEO_PICTURE_TYPE_I: Type I
* @GST_MPEG_VIDEO_PICTURE_TYPE_P: Type P
* @GST_MPEG_VIDEO_PICTURE_TYPE_B: Type B
* @GST_MPEG_VIDEO_PICTURE_TYPE_D: Type D
*
* Indicates the type of picture
*/
typedef enum {
GST_MPEG_VIDEO_PICTURE_TYPE_I = 0x01,
GST_MPEG_VIDEO_PICTURE_TYPE_P = 0x02,
GST_MPEG_VIDEO_PICTURE_TYPE_B = 0x03,
GST_MPEG_VIDEO_PICTURE_TYPE_D = 0x04
} GstMpegVideoPictureType;
/**
* GstMpegVideoPictureStructure:
* @GST_MPEG_VIDEO_PICTURE_STRUCTURE_TOP_FIELD: Top field
* @GST_MPEG_VIDEO_PICTURE_STRUCTURE_BOTTOM_FIELD: Bottom field
* @GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME: Frame
*
* Indicates the structure of picture
*/
typedef enum {
GST_MPEG_VIDEO_PICTURE_STRUCTURE_TOP_FIELD = 0x01,
GST_MPEG_VIDEO_PICTURE_STRUCTURE_BOTTOM_FIELD = 0x02,
GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME = 0x03
} GstMpegVideoPictureStructure;
typedef struct _GstMpegVideoSequenceHdr GstMpegVideoSequenceHdr;
typedef struct _GstMpegVideoSequenceExt GstMpegVideoSequenceExt;
typedef struct _GstMpegVideoPictureHdr GstMpegVideoPictureHdr;
typedef struct _GstMpegVideoGop GstMpegVideoGop;
typedef struct _GstMpegVideoPictureExt GstMpegVideoPictureExt;
typedef struct _GstMpegVideoQuantMatrixExt GstMpegVideoQuantMatrixExt;
typedef struct _GstMpegVideoTypeOffsetSize GstMpegVideoTypeOffsetSize;
/**
* GstMpegVideoSequenceHdr:
* @width: Width of each frame
* @height: Height of each frame
* @par_w: Calculated Pixel Aspect Ratio width
* @par_h: Pixel Aspect Ratio height
* @fps_n: Calculated Framrate nominator
* @fps_d: Calculated Framerate denominator
* @bitrate_value: Value of the bitrate as is in the stream (400bps unit)
* @bitrate: the real bitrate of the Mpeg video stream in bits per second, 0 if VBR stream
* @constrained_parameters_flag: %TRUE if this stream uses contrained parameters.
* @intra_quantizer_matrix: intra-quantization table
* @non_intra_quantizer_matrix: non-intra quantization table
*
* The Mpeg2 Video Sequence Header structure.
*/
struct _GstMpegVideoSequenceHdr
{
guint16 width, height;
guint8 aspect_ratio_info;
guint8 frame_rate_code;
guint32 bitrate_value;
guint16 vbv_buffer_size_value;
guint8 constrained_parameters_flag;
guint8 intra_quantizer_matrix[64];
guint8 non_intra_quantizer_matrix[64];
/* Calculated values */
guint par_w, par_h;
guint fps_n, fps_d;
guint bitrate;
};
/**
* GstMpegVideoSequenceExt:
* @profile: mpeg2 decoder profil
* @level: mpeg2 decoder level
* @progressive: %TRUE if the frames are progressive %FALSE otherwize
* @chroma_format: indicates the chrominance format
* @horiz_size_ext: Horizontal size
* @vert_size_ext: Vertical size
* @bitrate_ext: The bitrate
* @vbv_buffer_size_extension: Vbv vuffer size
* @low_delay: %TRUE if the sequence doesn't contain any B-pitcture, %FALSE
* otherwize
* @fps_n_ext: Framerate nominator code
* @fps_d_ext: Framerate denominator code
*
* The Mpeg2 Video Sequence Extension structure.
**/
struct _GstMpegVideoSequenceExt
{
/* mpeg2 decoder profile */
guint8 profile;
/* mpeg2 decoder level */
guint8 level;
guint8 progressive;
guint8 chroma_format;
guint8 horiz_size_ext, vert_size_ext;
guint16 bitrate_ext;
guint8 vbv_buffer_size_extension;
guint8 low_delay;
guint8 fps_n_ext, fps_d_ext;
};
/**
* GstMpegVideoQuantMatrixExt:
* @load_intra_quantiser_matrix
* @intra_quantiser_matrix
* @load_non_intra_quantiser_matrix
* @non_intra_quantiser_matrix:
* @load_chroma_intra_quantiser_matrix
* @chroma_intra_quantiser_matrix
* @load_chroma_non_intra_quantiser_matrix
* @chroma_non_intra_quantiser_matrix
*
* The Quant Matrix Extension structure
*/
struct _GstMpegVideoQuantMatrixExt
{
guint8 load_intra_quantiser_matrix;
guint8 intra_quantiser_matrix[64];
guint8 load_non_intra_quantiser_matrix;
guint8 non_intra_quantiser_matrix[64];
guint8 load_chroma_intra_quantiser_matrix;
guint8 chroma_intra_quantiser_matrix[64];
guint8 load_chroma_non_intra_quantiser_matrix;
guint8 chroma_non_intra_quantiser_matrix[64];
};
/**
* GstMpegVideoPictureHdr:
* @tsn: Temporal Sequence Number
* @pic_type: Type of the frame
* @full_pel_forward_vector: the full pel forward flag of
* the frame: 0 or 1.
* @full_pel_backward_vector: the full pel backward flag
* of the frame: 0 or 1.
* @f_code: F code
*
* The Mpeg2 Video Picture Header structure.
*/
struct _GstMpegVideoPictureHdr
{
guint16 tsn;
guint8 pic_type;
guint8 full_pel_forward_vector, full_pel_backward_vector;
guint8 f_code[2][2];
};
/**
* GstMpegVideoPictureExt:
* @intra_dc_precision: Intra DC precision
* @picture_structure: Structure of the picture
* @top_field_first: Top field first
* @frame_pred_frame_dct: Frame
* @concealment_motion_vectors: Concealment Motion Vectors
* @q_scale_type: Q Scale Type
* @intra_vlc_format: Intra Vlc Format
* @alternate_scan: Alternate Scan
* @repeat_first_field: Repeat First Field
* @chroma_420_type: Chroma 420 Type
* @progressive_frame: %TRUE if the frame is progressive %FALSE otherwize
*
* The Mpeg2 Video Picture Extension structure.
*/
struct _GstMpegVideoPictureExt
{
guint8 f_code[2][2];
guint8 intra_dc_precision;
guint8 picture_structure;
guint8 top_field_first;
guint8 frame_pred_frame_dct;
guint8 concealment_motion_vectors;
guint8 q_scale_type;
guint8 intra_vlc_format;
guint8 alternate_scan;
guint8 repeat_first_field;
guint8 chroma_420_type;
guint8 progressive_frame;
guint8 composite_display;
guint8 v_axis;
guint8 field_sequence;
guint8 sub_carrier;
guint8 burst_amplitude;
guint8 sub_carrier_phase;
};
/**
* GstMpegVideoGop:
* @drop_frame_flag: Drop Frame Flag
* @hour: Hour (0-23)
* @minute: Minute (O-59)
* @second: Second (0-59)
* @frame: Frame (0-59)
* @closed_gop: Closed Gop
* @broken_gop: Broken Gop
*
* The Mpeg Video Group of Picture structure.
*/
struct _GstMpegVideoGop
{
guint8 drop_frame_flag;
guint8 hour, minute, second, frame;
guint8 closed_gop;
guint8 broken_gop;
};
/**
* GstMpegVideoTypeOffsetSize:
* @type: the type of the packet that start at @offset
* @offset: the offset of the packet start in bytes, it is the exact, start of the packet, no sync code included
* @size: The size in bytes of the packet or -1 if the end wasn't found. It is the exact size of the packet, no sync code included
*
* A structure that contains the type of a packet, its offset and its size
*/
struct _GstMpegVideoTypeOffsetSize
{
guint8 type;
guint offset;
gint size;
};
GList * gst_mpeg_video_parse (guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_sequence_header (GstMpegVideoSequenceHdr * params,
guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_picture_header (GstMpegVideoPictureHdr* hdr,
guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_picture_extension (GstMpegVideoPictureExt *ext,
guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_gop (GstMpegVideoGop * gop,
guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_sequence_extension (GstMpegVideoSequenceExt * seqext,
guint8 * data, gsize size, guint offset);
gboolean gst_mpeg_video_parse_quant_matrix_extension (GstMpegVideoQuantMatrixExt * quant,
guint8 * data, gsize size, guint offset);
G_END_DECLS
#endif

3
gst-plugins-bad.spec.in
View file

@ -204,6 +204,7 @@ make ERROR_CFLAGS='' ERROR_CXXFLAGS=''
%{_libdir}/libgstbasevideo-%{majorminor}.so.*
%{_libdir}/libgstphotography-%{majorminor}.so.*
%{_libdir}/libgstsignalprocessor-%{majorminor}.so.*
%{_libdir}/libgstcodecparsers-%{majorminor}.so.*
# Plugins without external dependencies
%{_libdir}/gstreamer-%{majorminor}/libgstadpcmdec.so
%{_libdir}/gstreamer-%{majorminor}/libgstadpcmenc.so
@ -329,8 +330,10 @@ make ERROR_CFLAGS='' ERROR_CXXFLAGS=''
%{_libdir}/libgstbasevideo-%{majorminor}.so
%{_libdir}/libgstphotography-%{majorminor}.so
%{_libdir}/libgstsignalprocessor-%{majorminor}.so
%{_libdir}/libgstcodecparsers-%{majorminor}.so
%{_libdir}/libgstbasecamerabinsrc-%{majorminor}.so
%{_includedir}/gstreamer-%{majorminor}/gst/interfaces/photography*
%{_includedir}/gstreamer-%{majorminor}/gst/codecparsers
%{_includedir}/gstreamer-%{majorminor}/gst/signalprocessor
%{_includedir}/gstreamer-%{majorminor}/gst/video
%{_includedir}/gstreamer-%{majorminor}/gst/basecamerabinsrc/gstbasecamerasrc.h

3
pkgconfig/gstreamer-plugins-bad.pc.in
View file

@ -7,6 +7,7 @@ Name: GStreamer Bad Plugin libraries
Description: Currently includes the photography interface library
Requires: gstreamer-@GST_MAJORMINOR@ gstreamer-base-@GST_MAJORMINOR@
Version: @VERSION@
Libs: -L${libdir} -lgstphotography-@GST_MAJORMINOR@
Libs: -L${libdir} -lgstphotography-@GST_MAJORMINOR@\
-L${libdir} -lgstcodecparsers-@GST_MAJORMINOR@\
Cflags: -I${includedir}

10
tests/check/Makefile.am
View file

@ -183,6 +183,7 @@ check_PROGRAMS = \
pipelines/colorspace \
$(check_mimic) \
elements/rtpmux \
libs/mpegvideoparser \
$(check_schro) \
$(check_vp8) \
elements/viewfinderbin \
@ -214,6 +215,15 @@ elements_h263parse_LDADD = libparser.la $(LDADD)
elements_h264parse_LDADD = libparser.la $(LDADD)
libs_mpegvideoparser_CFLAGS = \
$(GST_PLUGINS_BAD_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) \
$(GST_BASE_CFLAGS) $(GST_CFLAGS) $(AM_CFLAGS)
libs_mpegvideoparser_LDADD = \
$(top_builddir)/gst-libs/gst/codecparsers/libgstcodecparsers-@GST_MAJORMINOR@.la \
$(GST_PLUGINS_BAD_LIBS) -lgstcodecparsers-@GST_MAJORMINOR@ \
$(GST_BASE_LIBS) $(GST_LIBS) $(LDADD)
elements_voaacenc_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \
$(GST_BASE_CFLAGS) $(GST_CFLAGS) $(AM_CFLAGS)

208
tests/check/libs/mpegvideoparser.c Normal file
View file

@ -0,0 +1,208 @@
/* Gstreamer
* Copyright (C) <2011> Intel Corporation
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.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 <gst/check/gstcheck.h>
#include <gst/codecparsers/gstmpegvideoparser.h>
/* actually seq + gop */
static guint8 mpeg2_seq[] = {
0x00, 0x00, 0x01, 0xb3, 0x02, 0x00, 0x18, 0x15, 0xff, 0xff, 0xe0, 0x28,
0x00, 0x00, 0x01, 0xb3, 0x78, 0x04, 0x38, 0x37, 0xff, 0xff, 0xf0, 0x00,
0x00, 0x00, 0x01, 0xb5, 0x14, 0x8a, 0x00, 0x11, 0x03, 0x71,
0x00, 0x00, 0x01, 0xb8, 0x00, 0x08, 0x00, 0x00,
0x00, 0x00, 0x01, 0x03, 0x00, 0x08, 0x00, 0x00
};
static guint8 mis_identified_datas[] = {
0x00, 0x00, 0x01, 0x1f, 0x4a, 0xf4, 0xd4, 0xd8, 0x08, 0x23, 0xdd,
0x7c, 0xd3, 0x75, 0x21, 0x43, 0x85, 0x31, 0x43, 0x04, 0x24, 0x30,
0x18, 0x43, 0xba, 0x1a, 0x50, 0x60, 0xbb, 0x53, 0x56, 0x80, 0x41,
0xb9, 0xd4, 0x25, 0x42, 0xea, 0x71, 0xb7, 0x49, 0x84, 0x0b, 0x14,
0x24, 0xc2, 0xaa, 0xba, 0xf9, 0xf7, 0x5b, 0x78, 0xa2, 0xba, 0xd3,
0xc7, 0x12, 0xee, 0xbe, 0xba, 0xfa, 0xeb, 0xeb, 0xaf, 0xbe, 0x6f,
0xce, 0x92, 0x05, 0x15, 0x22, 0x44, 0xf4, 0xc9, 0x1b, 0xcd, 0x84,
0x80, 0x87, 0x35, 0x6c, 0x07, 0x82, 0xaf, 0x3c, 0x3a, 0x89, 0x48,
0x3a, 0x26, 0x00, 0x64, 0x03, 0x12, 0x60, 0x03, 0xf4, 0x8c, 0x21,
0x16, 0xbe, 0x3c, 0x7c, 0x18, 0x03, 0x10, 0x0c, 0x80, 0xa0, 0x05,
0xe1, 0x85, 0x94, 0x90, 0xc4, 0x74, 0x05, 0x72, 0x80, 0x7a, 0x8e,
0x3e, 0x00, 0x30,
/* The accelerated version of scan_for_start_codes()
* mis-identifies the following as a start code */
0x01, 0x00, 0x01, 0x80, 0x68, 0x14,
0x26, 0xe4, 0x80, 0x98, 0x0a, 0xba, 0x77, 0x01, 0xc2, 0x42, 0x12,
0xc4, 0x59, 0x2a, 0xbb, 0x49, 0xf2, 0xc5, 0xa8, 0xd9, 0x30, 0x33,
0x16, 0x50, 0x60, 0x61, 0x41, 0xaa, 0x0d, 0x41, 0x5b, 0x17, 0x77,
0x76, 0x1a, 0x14, 0x3a, 0x08, 0x19, 0x3d, 0x6c, 0x94, 0x55, 0xd0,
0x94, 0x5a, 0xeb, 0x61, 0x22, 0xa7, 0xa6, 0x83, 0x47, 0x6d, 0x4d,
0x84, 0xc4, 0x6f, 0x78, 0xd8, 0x3a, 0xb4, 0x02, 0x0c, 0x36, 0xa6,
0x0b, 0x18, 0x49, 0xf7, 0xad, 0x00, 0x82, 0x09, 0xba, 0x12, 0xba,
0x1d, 0x44, 0x94, 0x0a, 0x1b, 0x03, 0xbb, 0xa2, 0x53, 0x02, 0xc0,
0x41, 0xac, 0x22,
/* the real start code is here */
0x00, 0x00, 0x01, 0x20, 0x4a, 0xfd, 0xf5, 0x50
};
static GstMpegVideoPacketTypeCode ordercode[] = {
GST_MPEG_VIDEO_PACKET_SEQUENCE,
GST_MPEG_VIDEO_PACKET_EXTENSION,
GST_MPEG_VIDEO_PACKET_GOP,
};
GST_START_TEST (test_mpeg_parse)
{
gint i;
GList *list, *tmp;
GstMpegVideoTypeOffsetSize *typeoffsz;
list = gst_mpeg_video_parse (mpeg2_seq, sizeof (mpeg2_seq), 12);
assert_equals_int (g_list_length (list), 4);
for (tmp = list, i = 0; tmp; tmp = g_list_next (tmp), i++) {
typeoffsz = tmp->data;
if (i == 3) {
fail_unless (GST_MPEG_VIDEO_PACKET_SLICE_MIN <= typeoffsz->type &&
typeoffsz->type <= GST_MPEG_VIDEO_PACKET_SLICE_MAX);
fail_unless (typeoffsz->size < 0);
} else
assert_equals_int (ordercode[i], typeoffsz->type);
}
g_list_free_full (list, (GDestroyNotify) g_free);
}
GST_END_TEST;
GST_START_TEST (test_mpeg_parse_sequence_header)
{
GList *list;
GstMpegVideoTypeOffsetSize *typeoffsz;
GstMpegVideoSequenceHdr seqhdr;
list = gst_mpeg_video_parse (mpeg2_seq, sizeof (mpeg2_seq), 12);
typeoffsz = list->data;
fail_unless (typeoffsz->type == GST_MPEG_VIDEO_PACKET_SEQUENCE);
fail_unless (gst_mpeg_video_parse_sequence_header (&seqhdr, mpeg2_seq,
sizeof (mpeg2_seq), typeoffsz->offset));
assert_equals_int (seqhdr.width, 1920);
assert_equals_int (seqhdr.height, 1080);
assert_equals_int (seqhdr.aspect_ratio_info, 3);
assert_equals_int (seqhdr.par_w, 17280);
assert_equals_int (seqhdr.par_h, 17280);
assert_equals_int (seqhdr.frame_rate_code, 7);
assert_equals_int (seqhdr.fps_n, 60000);
assert_equals_int (seqhdr.fps_d, 1001);
assert_equals_int (seqhdr.bitrate_value, 262143);
assert_equals_int (seqhdr.bitrate, 0);
assert_equals_int (seqhdr.vbv_buffer_size_value, 512);
fail_unless (seqhdr.constrained_parameters_flag == FALSE);
g_list_free_full (list, (GDestroyNotify) g_free);
}
GST_END_TEST;
GST_START_TEST (test_mpeg_parse_sequence_extension)
{
GList *list;
GstMpegVideoTypeOffsetSize *typeoffsz;
GstMpegVideoSequenceExt seqext;
list = gst_mpeg_video_parse (mpeg2_seq, sizeof (mpeg2_seq), 12);
typeoffsz = list->next->data;
fail_unless (typeoffsz->type == GST_MPEG_VIDEO_PACKET_EXTENSION);
fail_unless (gst_mpeg_video_parse_sequence_extension (&seqext,
mpeg2_seq, sizeof (mpeg2_seq), typeoffsz->offset));
assert_equals_int (seqext.profile, 4);
assert_equals_int (seqext.level, 8);
assert_equals_int (seqext.progressive, 1);
assert_equals_int (seqext.chroma_format, 1);
assert_equals_int (seqext.horiz_size_ext, 0);
assert_equals_int (seqext.vert_size_ext, 0);
assert_equals_int (seqext.vert_size_ext, 0);
assert_equals_int (seqext.bitrate_ext, 8);
assert_equals_int (seqext.vbv_buffer_size_extension, 3);
assert_equals_int (seqext.low_delay, 0);
assert_equals_int (seqext.fps_n_ext, 3);
assert_equals_int (seqext.fps_d_ext, 2);
g_list_free_full (list, (GDestroyNotify) g_free);
}
GST_END_TEST;
GST_START_TEST (test_mis_identified_datas)
{
GList *list, *tmp;
GstMpegVideoTypeOffsetSize *typeoffsz;
guint8 *data = mis_identified_datas;
list = gst_mpeg_video_parse (mis_identified_datas,
sizeof (mis_identified_datas), 0);
assert_equals_int (g_list_length (list), 2);
for (tmp = list; tmp; tmp = g_list_next (tmp)) {
typeoffsz = tmp->data;
assert_equals_int (data[typeoffsz->offset - 4], 0);
assert_equals_int (data[typeoffsz->offset - 3], 0);
assert_equals_int (data[typeoffsz->offset - 2], 1);
}
g_list_free_full (list, (GDestroyNotify) g_free);
}
GST_END_TEST;
static Suite *
videoparsers_suite (void)
{
Suite *s = suite_create ("Video Parsers library");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_mpeg_parse);
tcase_add_test (tc_chain, test_mpeg_parse_sequence_header);
tcase_add_test (tc_chain, test_mpeg_parse_sequence_extension);
tcase_add_test (tc_chain, test_mis_identified_datas);
return s;
}
int
main (int argc, char **argv)
{
int nf;
Suite *s = videoparsers_suite ();
SRunner *sr = srunner_create (s);
gst_check_init (&argc, &argv);
srunner_run_all (sr, CK_NORMAL);
nf = srunner_ntests_failed (sr);
srunner_free (sr);
return nf;
}