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Wed, 19 Oct 2022 15:03:42 +0000 From: Andreas Rheinhardt To: ffmpeg-devel@ffmpeg.org Date: Wed, 19 Oct 2022 17:03:46 +0200 Message-ID: X-Mailer: git-send-email 2.34.1 X-TMN: [33IBn7qR6lTS2ocSFmAApnWv64QHvhlx3rYeRjb3co4=] X-ClientProxiedBy: AS8PR04CA0166.eurprd04.prod.outlook.com (2603:10a6:20b:331::21) To AS8P250MB0744.EURP250.PROD.OUTLOOK.COM (2603:10a6:20b:541::14) X-Microsoft-Original-Message-ID: <20221019150347.780595-1-andreas.rheinhardt@outlook.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8P250MB0744:EE_|DU2P250MB0189:EE_ X-MS-Office365-Filtering-Correlation-Id: db5c7620-1343-469e-82e4-08dab1e31c53 X-MS-Exchange-SLBlob-MailProps: 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 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Andreas Rheinhardt --- libavcodec/cbs.c | 18 ++++-------------- libavcodec/cbs_internal.h | 21 ++++++++++++--------- 2 files changed, 16 insertions(+), 23 deletions(-) diff --git a/libavcodec/cbs.c b/libavcodec/cbs.c index 8d6e3c3442..504197e06d 100644 --- a/libavcodec/cbs.c +++ b/libavcodec/cbs.c @@ -839,12 +839,10 @@ void ff_cbs_delete_unit(CodedBitstreamFragment *frag, static void cbs_default_free_unit_content(void *opaque, uint8_t *data) { const CodedBitstreamUnitTypeDescriptor *desc = opaque; - if (desc->content_type == CBS_CONTENT_TYPE_INTERNAL_REFS) { - int i; - for (i = 0; i < desc->type.ref.nb_offsets; i++) { - void **ptr = (void**)(data + desc->type.ref.offsets[i]); - av_buffer_unref((AVBufferRef**)(ptr + 1)); - } + + for (int i = 0; i < desc->type.ref.nb_offsets; i++) { + void **ptr = (void**)(data + desc->type.ref.offsets[i]); + av_buffer_unref((AVBufferRef**)(ptr + 1)); } av_free(data); } @@ -981,14 +979,6 @@ static int cbs_clone_unit_content(CodedBitstreamContext *ctx, return AVERROR(ENOSYS); switch (desc->content_type) { - case CBS_CONTENT_TYPE_POD: - ref = av_buffer_alloc(desc->content_size); - if (!ref) - return AVERROR(ENOMEM); - memcpy(ref->data, unit->content, desc->content_size); - err = 0; - break; - case CBS_CONTENT_TYPE_INTERNAL_REFS: err = cbs_clone_internal_refs_unit_content(&ref, unit, desc); break; diff --git a/libavcodec/cbs_internal.h b/libavcodec/cbs_internal.h index 5ccba3c901..045df91744 100644 --- a/libavcodec/cbs_internal.h +++ b/libavcodec/cbs_internal.h @@ -31,9 +31,7 @@ enum CBSContentType { - // Unit content is a simple structure. - CBS_CONTENT_TYPE_POD, - // Unit content contains some references to other structures, but all + // Unit content may contain some references to other structures, but all // managed via buffer reference counting. The descriptor defines the // structure offsets of every buffer reference. CBS_CONTENT_TYPE_INTERNAL_REFS, @@ -78,9 +76,12 @@ typedef const struct CodedBitstreamUnitTypeDescriptor { size_t content_size; union { + // This union's state is determined by content_type: + // ref for CBS_CONTENT_TYPE_INTERNAL_REFS, + // complex for CBS_CONTENT_TYPE_COMPLEX. struct { - // Number of entries in the ref_offsets array. Only nonzero - // if the content_type is CBS_CONTENT_TYPE_INTERNAL_REFS. + // Number of entries in the ref_offsets array. + // May be zero, then the structure is POD-like. int nb_offsets; // The structure must contain two adjacent elements: // type *field; @@ -191,18 +192,20 @@ int ff_cbs_write_signed(CodedBitstreamContext *ctx, PutBitContext *pbc, #define MIN_INT_BITS(length) (-(INT64_C(1) << ((length) - 1))) #define TYPE_LIST(...) { __VA_ARGS__ } -#define CBS_UNIT_TYPE_POD(type, structure) { \ +#define CBS_UNIT_TYPE_POD(type_, structure) { \ .nb_unit_types = 1, \ - .unit_type.list = { type }, \ - .content_type = CBS_CONTENT_TYPE_POD, \ + .unit_type.list = { type_ }, \ + .content_type = CBS_CONTENT_TYPE_INTERNAL_REFS, \ .content_size = sizeof(structure), \ + .type.ref = { .nb_offsets = 0 }, \ } #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_type = CBS_CONTENT_TYPE_INTERNAL_REFS, \ .content_size = sizeof(structure), \ + .type.ref = { .nb_offsets = 0 }, \ } #define CBS_UNIT_TYPES_INTERNAL_REF(types, structure, ref_field) { \ From patchwork Wed Oct 19 15:05:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Rheinhardt X-Patchwork-Id: 38825 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a20:4a86:b0:9d:28a3:170e with SMTP id fn6csp408674pzb; Wed, 19 Oct 2022 08:05:44 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5+GxFowVd9lAgdNQ6gjfHUZo8x010sLXS5Md2OH8K1gT1oA000O7PhTOxy3ueqG1EaWsGl X-Received: by 2002:a05:6402:320e:b0:45c:ae50:dbca with SMTP id g14-20020a056402320e00b0045cae50dbcamr7998120eda.104.1666191940386; Wed, 19 Oct 2022 08:05:40 -0700 (PDT) Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. 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Wed, 19 Oct 2022 15:05:28 +0000 From: Andreas Rheinhardt To: ffmpeg-devel@ffmpeg.org Date: Wed, 19 Oct 2022 17:05:32 +0200 Message-ID: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: X-TMN: [cqPe78WAfUlNWty9gjwOLW846P4BOfYXqAGr3EqMzkM=] X-ClientProxiedBy: AM6PR10CA0082.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:209:8c::23) To AS8P250MB0744.EURP250.PROD.OUTLOOK.COM (2603:10a6:20b:541::14) X-Microsoft-Original-Message-ID: <20221019150532.780739-1-andreas.rheinhardt@outlook.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8P250MB0744:EE_|DU2P250MB0189:EE_ X-MS-Office365-Filtering-Correlation-Id: 60048751-3836-4d9a-8cec-08dab1e35beb X-MS-Exchange-SLBlob-MailProps: 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 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Andreas Rheinhardt --- Inspired by https://ffmpeg.org/pipermail/ffmpeg-devel/2022-October/303005.html libavcodec/cbs_internal.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/cbs_internal.h b/libavcodec/cbs_internal.h index 045df91744..7887552269 100644 --- a/libavcodec/cbs_internal.h +++ b/libavcodec/cbs_internal.h @@ -41,9 +41,9 @@ enum CBSContentType { }; enum { - // Maximum number of unit types described by the same unit type - // descriptor. - CBS_MAX_UNIT_TYPES = 3, + // Maximum number of unit types described by the same non-range + // unit type descriptor. + CBS_MAX_LIST_UNIT_TYPES = 3, // Maximum number of reference buffer offsets in any one unit. CBS_MAX_REF_OFFSETS = 2, // Special value used in a unit type descriptor to indicate that it @@ -60,7 +60,7 @@ typedef const struct CodedBitstreamUnitTypeDescriptor { union { // Array of unit types that this entry describes. - CodedBitstreamUnitType list[CBS_MAX_UNIT_TYPES]; + CodedBitstreamUnitType list[CBS_MAX_LIST_UNIT_TYPES]; // Start and end of unit type range, used if nb_unit_types is // CBS_UNIT_TYPE_RANGE. struct {