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isomp4: Check return value of GstByteWriter

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And use unchecked variant of GstByteReader where applicable
This commit is contained in:
Edward Hervey 2012-04-12 15:48:57 +02:00
parent eb0cdfe20f
commit 97591c1e77
3 changed files with 39 additions and 35 deletions
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62
gst/isomp4/atoms.c
View file

@ -4215,36 +4215,38 @@ build_jp2h_extension (AtomTRAK * trak, gint width, gint height,
idhr_size + colr_size + cmap_size + cdef_size, TRUE);
/* ihdr = image header box */
gst_byte_writer_put_uint32_be (&writer, 22);
gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('i', 'h', 'd', 'r'));
gst_byte_writer_put_uint32_be (&writer, height);
gst_byte_writer_put_uint32_be (&writer, width);
gst_byte_writer_put_uint16_be (&writer, ncomp);
gst_byte_writer_put_uint32_be_unchecked (&writer, 22);
gst_byte_writer_put_uint32_le_unchecked (&writer, GST_MAKE_FOURCC ('i', 'h',
'd', 'r'));
gst_byte_writer_put_uint32_be_unchecked (&writer, height);
gst_byte_writer_put_uint32_be_unchecked (&writer, width);
gst_byte_writer_put_uint16_be_unchecked (&writer, ncomp);
/* 8 bits per component, unsigned */
gst_byte_writer_put_uint8 (&writer, 0x7);
gst_byte_writer_put_uint8_unchecked (&writer, 0x7);
/* compression type; reserved */
gst_byte_writer_put_uint8 (&writer, 0x7);
gst_byte_writer_put_uint8_unchecked (&writer, 0x7);
/* colour space (un)known */
gst_byte_writer_put_uint8 (&writer, 0x0);
gst_byte_writer_put_uint8_unchecked (&writer, 0x0);
/* intellectual property right (box present) */
gst_byte_writer_put_uint8 (&writer, 0x0);
gst_byte_writer_put_uint8_unchecked (&writer, 0x0);
/* colour specification box */
gst_byte_writer_put_uint32_be (&writer, 15);
gst_byte_writer_put_uint32_le (&writer, GST_MAKE_FOURCC ('c', 'o', 'l', 'r'));
gst_byte_writer_put_uint32_be_unchecked (&writer, 15);
gst_byte_writer_put_uint32_le_unchecked (&writer, GST_MAKE_FOURCC ('c', 'o',
'l', 'r'));
/* specification method: enumerated */
gst_byte_writer_put_uint8 (&writer, 0x1);
gst_byte_writer_put_uint8_unchecked (&writer, 0x1);
/* precedence; reserved */
gst_byte_writer_put_uint8 (&writer, 0x0);
gst_byte_writer_put_uint8_unchecked (&writer, 0x0);
/* approximation; reserved */
gst_byte_writer_put_uint8 (&writer, 0x0);
gst_byte_writer_put_uint8_unchecked (&writer, 0x0);
/* enumerated colourspace */
gst_byte_writer_put_uint32_be (&writer, cenum);
gst_byte_writer_put_uint32_be_unchecked (&writer, cenum);
if (cmap_array) {
gst_byte_writer_put_uint32_be (&writer, cmap_size);
gst_byte_writer_put_uint32_le (&writer,
gst_byte_writer_put_uint32_be_unchecked (&writer, cmap_size);
gst_byte_writer_put_uint32_le_unchecked (&writer,
GST_MAKE_FOURCC ('c', 'm', 'a', 'p'));
for (i = 0; i < cmap_array_size; i++) {
const GValue *item;
@ -4264,33 +4266,33 @@ build_jp2h_extension (AtomTRAK * trak, gint width, gint height,
GST_WARNING ("MTYP of cmap atom signals Pallete Mapping, but we don't "
"handle Pallete mapping atoms yet");
gst_byte_writer_put_uint16_be (&writer, cmp);
gst_byte_writer_put_uint8 (&writer, mtyp);
gst_byte_writer_put_uint8 (&writer, pcol);
gst_byte_writer_put_uint16_be_unchecked (&writer, cmp);
gst_byte_writer_put_uint8_unchecked (&writer, mtyp);
gst_byte_writer_put_uint8_unchecked (&writer, pcol);
}
}
if (cdef_array) {
gst_byte_writer_put_uint32_be (&writer, cdef_size);
gst_byte_writer_put_uint32_le (&writer,
gst_byte_writer_put_uint32_be_unchecked (&writer, cdef_size);
gst_byte_writer_put_uint32_le_unchecked (&writer,
GST_MAKE_FOURCC ('c', 'd', 'e', 'f'));
gst_byte_writer_put_uint16_be (&writer, cdef_array_size);
gst_byte_writer_put_uint16_be_unchecked (&writer, cdef_array_size);
for (i = 0; i < cdef_array_size; i++) {
const GValue *item;
gint value;
item = gst_value_array_get_value (cdef_array, i);
value = g_value_get_int (item);
gst_byte_writer_put_uint16_be (&writer, i);
gst_byte_writer_put_uint16_be_unchecked (&writer, i);
if (value > 0) {
gst_byte_writer_put_uint16_be (&writer, 0);
gst_byte_writer_put_uint16_be (&writer, value);
gst_byte_writer_put_uint16_be_unchecked (&writer, 0);
gst_byte_writer_put_uint16_be_unchecked (&writer, value);
} else if (value < 0) {
gst_byte_writer_put_uint16_be (&writer, -value);
gst_byte_writer_put_uint16_be (&writer, 0); /* TODO what here? */
gst_byte_writer_put_uint16_be_unchecked (&writer, -value);
gst_byte_writer_put_uint16_be_unchecked (&writer, 0); /* TODO what here? */
} else {
gst_byte_writer_put_uint16_be (&writer, 1);
gst_byte_writer_put_uint16_be (&writer, 0);
gst_byte_writer_put_uint16_be_unchecked (&writer, 1);
gst_byte_writer_put_uint16_be_unchecked (&writer, 0);
}
}
}

6
gst/isomp4/qtdemux.c
View file

@ -6251,7 +6251,8 @@ qtdemux_get_rtsp_uri_from_hndl (GstQTDemux * qtdemux, GNode * minf)
break;
}
/* skipping to the next entry */
gst_byte_reader_skip (&dref, atom_size - 8);
if (!gst_byte_reader_skip (&dref, atom_size - 8))
break;
} else {
GST_WARNING_OBJECT (qtdemux, "Failed to parse hndl child "
"atom header");
@ -6261,7 +6262,8 @@ qtdemux_get_rtsp_uri_from_hndl (GstQTDemux * qtdemux, GNode * minf)
break;
}
/* skip to the next entry */
gst_byte_reader_skip (&dref, size - 8);
if (!gst_byte_reader_skip (&dref, size - 8))
break;
} else {
GST_WARNING_OBJECT (qtdemux, "Error parsing dref atom");
}

6
gst/isomp4/qtdemux_dump.c
View file

@ -64,7 +64,7 @@ qtdemux_dump_mvhd (GstQTDemux * qtdemux, GstByteReader * data, int depth)
GST_LOG ("%*s pref. rate: %g", depth, "", GET_FP32 (data));
GST_LOG ("%*s pref. volume: %g", depth, "", GET_FP16 (data));
gst_byte_reader_skip (data, 46);
gst_byte_reader_skip_unchecked (data, 46);
GST_LOG ("%*s preview time: %u", depth, "", GET_UINT32 (data));
GST_LOG ("%*s preview dur.: %u", depth, "", GET_UINT32 (data));
GST_LOG ("%*s poster time: %u", depth, "", GET_UINT32 (data));
@ -281,7 +281,7 @@ qtdemux_dump_stsd (GstQTDemux * qtdemux, GstByteReader * data, int depth)
return FALSE;
qt_atom_parser_peek_sub (data, 0, 78, &sub);
gst_byte_reader_skip (&sub, 6);
gst_byte_reader_skip_unchecked (&sub, 6);
GST_LOG ("%*s data reference:%d", depth, "", GET_UINT16 (&sub));
GST_LOG ("%*s version/rev.: %08x", depth, "", GET_UINT32 (&sub));
fourcc = GET_FOURCC (&sub);
@ -297,7 +297,7 @@ qtdemux_dump_stsd (GstQTDemux * qtdemux, GstByteReader * data, int depth)
GST_LOG ("%*s frame count: %u", depth, "", GET_UINT16 (&sub));
/* something is not right with this, it's supposed to be a string but it's
* not apparently, so just skip this for now */
gst_byte_reader_skip (&sub, 1 + 31);
gst_byte_reader_skip_unchecked (&sub, 1 + 31);
GST_LOG ("%*s compressor: (skipped)", depth, "");
GST_LOG ("%*s depth: %u", depth, "", GET_UINT16 (&sub));
GST_LOG ("%*s color table ID:%u", depth, "", GET_UINT16 (&sub));