[FFmpeg-devel] [PATCH 1/3] tools/target_dec_fuzzer: set some avctx->export_side_data flags

[FFmpeg-devel] [PATCH 1/3] tools/target_dec_fuzzer: set some avctx->export_side_data flags

[James Almer]

Signed-off-by: James Almer <jamrial@gmail.com>
---
 tools/target_dec_fuzzer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 1587045e02..7d71dd39e3 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -336,7 +336,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         if ((flags & 0x10) && c->p.id != AV_CODEC_ID_H264)
             ctx->flags2 |= AV_CODEC_FLAG2_FAST;
         if (flags & 0x80)
-            ctx->flags2 |= AV_CODEC_FLAG2_EXPORT_MVS;
+            ctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
 
         if (flags & 0x40)
             av_force_cpu_flags(0);
@@ -404,6 +404,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
             ctx->debug |= FF_DEBUG_QP;
         if (flags64 &4)
             ctx->debug |= FF_DEBUG_MB_TYPE;
+        if (flags64 & 8)
+            ctx->export_side_data |= AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS;
 
         if (extradata_size < size) {
             ctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
-- 
2.37.1

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[FFmpeg-devel] [PATCH 2/3] tools/target_dec_fuzzer: set AV_EF_CRCCHECK in avctx->err_recognition

[James Almer]

Signed-off-by: James Almer <jamrial@gmail.com>
---
 tools/target_dec_fuzzer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 7d71dd39e3..06c38a96c1 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -406,6 +406,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
             ctx->debug |= FF_DEBUG_MB_TYPE;
         if (flags64 & 8)
             ctx->export_side_data |= AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS;
+        if (flags64 & 0x10)
+            ctx->err_recognition |= AV_EF_CRCCHECK;
 
         if (extradata_size < size) {
             ctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
-- 
2.37.1

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[FFmpeg-devel] [PATCH 3/3] tools/target_dec_fuzzer: set avctx->workaround_bugs flags

[James Almer]

Signed-off-by: James Almer <jamrial@gmail.com>
---
 tools/target_dec_fuzzer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 06c38a96c1..5831052ba8 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -409,6 +409,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         if (flags64 & 0x10)
             ctx->err_recognition |= AV_EF_CRCCHECK;
 
+        ctx->workaround_bugs = bytestream2_get_le32(&gbc);
+
         if (extradata_size < size) {
             ctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
             if (ctx->extradata) {
-- 
2.37.1

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Re: [FFmpeg-devel] [PATCH 1/3] tools/target_dec_fuzzer: set some avctx->export_side_data flags

[James Almer]

On 7/19/2022 10:44 AM, James Almer wrote:
> Signed-off-by: James Almer <jamrial@gmail.com>
> ---
>   tools/target_dec_fuzzer.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
> index 1587045e02..7d71dd39e3 100644
> --- a/tools/target_dec_fuzzer.c
> +++ b/tools/target_dec_fuzzer.c
> @@ -336,7 +336,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
>           if ((flags & 0x10) && c->p.id != AV_CODEC_ID_H264)
>               ctx->flags2 |= AV_CODEC_FLAG2_FAST;
>           if (flags & 0x80)
> -            ctx->flags2 |= AV_CODEC_FLAG2_EXPORT_MVS;
> +            ctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
>   
>           if (flags & 0x40)
>               av_force_cpu_flags(0);
> @@ -404,6 +404,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
>               ctx->debug |= FF_DEBUG_QP;
>           if (flags64 &4)
>               ctx->debug |= FF_DEBUG_MB_TYPE;
> +        if (flags64 & 8)
> +            ctx->export_side_data |= AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS;
>   
>           if (extradata_size < size) {
>               ctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);

Will apply the patchset.
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