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Code Issues Releases Activity

avcodec/cbs_jpeg: Use table-based alloc/free

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cbs_jpeg was the last user of CBS that didn't use
CodedBitstreamUnitTypeDescriptors.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-08-04 11:23:01 +02:00
parent 9638f5b1a2
commit 2d722b6638
2 changed files with 34 additions and 49 deletions
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7
libavcodec/cbs_internal.h
View File

@ -197,6 +197,13 @@ int ff_cbs_write_signed(CodedBitstreamContext *ctx, PutBitContext *pbc,
.content_type = CBS_CONTENT_TYPE_POD, \
.content_size = sizeof(structure), \
}
#define CBS_UNIT_RANGE_POD(range_start, range_end, structure) { \
.nb_unit_types = CBS_UNIT_TYPE_RANGE, \
.unit_type.range.start = range_start, \
.unit_type.range.end = range_end, \
.content_type = CBS_CONTENT_TYPE_POD, \
.content_size = sizeof(structure), \
}
#define CBS_UNIT_TYPES_INTERNAL_REF(types, structure, ref_field) { \
.nb_unit_types = FF_ARRAY_ELEMS((CodedBitstreamUnitType[])TYPE_LIST types), \

76
libavcodec/cbs_jpeg.c
View File

@ -82,27 +82,6 @@
#undef xu
static void cbs_jpeg_free_application_data(void *opaque, uint8_t *content)
{
JPEGRawApplicationData *ad = (JPEGRawApplicationData*)content;
av_buffer_unref(&ad->Ap_ref);
av_freep(&content);
}
static void cbs_jpeg_free_comment(void *opaque, uint8_t *content)
{
JPEGRawComment *comment = (JPEGRawComment*)content;
av_buffer_unref(&comment->Cm_ref);
av_freep(&content);
}
static void cbs_jpeg_free_scan(void *opaque, uint8_t *content)
{
JPEGRawScan *scan = (JPEGRawScan*)content;
av_buffer_unref(&scan->data_ref);
av_freep(&content);
}
static int cbs_jpeg_split_fragment(CodedBitstreamContext *ctx,
CodedBitstreamFragment *frag,
int header)
@ -248,41 +227,26 @@ static int cbs_jpeg_read_unit(CodedBitstreamContext *ctx,
if (err < 0)
return err;
err = ff_cbs_alloc_unit_content2(ctx, unit);
if (err < 0)
return err;
if (unit->type >= JPEG_MARKER_SOF0 &&
unit->type <= JPEG_MARKER_SOF3) {
err = ff_cbs_alloc_unit_content(unit,
sizeof(JPEGRawFrameHeader),
NULL);
if (err < 0)
return err;
err = cbs_jpeg_read_frame_header(ctx, &gbc, unit->content);
if (err < 0)
return err;
} else if (unit->type >= JPEG_MARKER_APPN &&
unit->type <= JPEG_MARKER_APPN + 15) {
err = ff_cbs_alloc_unit_content(unit,
sizeof(JPEGRawApplicationData),
&cbs_jpeg_free_application_data);
if (err < 0)
return err;
err = cbs_jpeg_read_application_data(ctx, &gbc, unit->content);
if (err < 0)
return err;
} else if (unit->type == JPEG_MARKER_SOS) {
JPEGRawScan *scan;
JPEGRawScan *scan = unit->content;
int pos;
err = ff_cbs_alloc_unit_content(unit,
sizeof(JPEGRawScan),
&cbs_jpeg_free_scan);
if (err < 0)
return err;
scan = unit->content;
err = cbs_jpeg_read_scan_header(ctx, &gbc, &scan->header);
if (err < 0)
return err;
@ -299,21 +263,17 @@ static int cbs_jpeg_read_unit(CodedBitstreamContext *ctx,
} else {
switch (unit->type) {
#define SEGMENT(marker, type, func, free) \
#define SEGMENT(marker, func) \
case JPEG_MARKER_ ## marker: \
{ \
err = ff_cbs_alloc_unit_content(unit, \
sizeof(type), free); \
if (err < 0) \
return err; \
err = cbs_jpeg_read_ ## func(ctx, &gbc, unit->content); \
if (err < 0) \
return err; \
} \
break
SEGMENT(DQT, JPEGRawQuantisationTableSpecification, dqt, NULL);
SEGMENT(DHT, JPEGRawHuffmanTableSpecification, dht, NULL);
SEGMENT(COM, JPEGRawComment, comment, &cbs_jpeg_free_comment);
SEGMENT(DQT, dqt);
SEGMENT(DHT, dht);
SEGMENT(COM, comment);
#undef SEGMENT
default:
return AVERROR(ENOSYS);
@ -456,9 +416,27 @@ static int cbs_jpeg_assemble_fragment(CodedBitstreamContext *ctx,
return 0;
}
static const CodedBitstreamUnitTypeDescriptor cbs_jpeg_unit_types[] = {
CBS_UNIT_RANGE_POD(JPEG_MARKER_SOF0, JPEG_MARKER_SOF3, JPEGRawFrameHeader),
CBS_UNIT_RANGE_INTERNAL_REF(JPEG_MARKER_APPN, JPEG_MARKER_APPN + 15,
JPEGRawApplicationData, Ap),
CBS_UNIT_TYPE_INTERNAL_REF(JPEG_MARKER_SOS, JPEGRawScan, data),
CBS_UNIT_TYPE_POD(JPEG_MARKER_DQT, JPEGRawQuantisationTableSpecification),
CBS_UNIT_TYPE_POD(JPEG_MARKER_DHT, JPEGRawHuffmanTableSpecification),
CBS_UNIT_TYPE_INTERNAL_REF(JPEG_MARKER_COM, JPEGRawComment, Cm),
CBS_UNIT_TYPE_END_OF_LIST
};
const CodedBitstreamType ff_cbs_type_jpeg = {
.codec_id = AV_CODEC_ID_MJPEG,
.unit_types = cbs_jpeg_unit_types,
.split_fragment = &cbs_jpeg_split_fragment,
.read_unit = &cbs_jpeg_read_unit,
.write_unit = &cbs_jpeg_write_unit,