[FFmpeg-devel] [PATCH FFmpeg 4/15] libavfilter: dnn interface definitions for CLIP/CLAP Inference

[<m.kaindl0208@gmail.com>]

Defines new DNNFunctionType enums for CLIP and CLAP inference and adds new data structures like DNNExecZeroShotClassificationParams to support zero-shot classification models.


Try the new filters using my Github Repo https://github.com/MaximilianKaindl/DeepFFMPEGVideoClassification.

Any Feedback is appreciated!

Signed-off-by: MaximilianKaindl <m.kaindl0208@gmail.com>
---
 libavfilter/dnn_interface.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/libavfilter/dnn_interface.h b/libavfilter/dnn_interface.h
index 66086409be..2125348c6b 100644
--- a/libavfilter/dnn_interface.h
+++ b/libavfilter/dnn_interface.h
@@ -58,6 +58,8 @@ typedef enum {
     DFT_PROCESS_FRAME,      // process the whole frame
     DFT_ANALYTICS_DETECT,   // detect from the whole frame
     DFT_ANALYTICS_CLASSIFY, // classify for each bounding box
+    DFT_ANALYTICS_CLIP,      // classify whole frame with zero-shot classification
+    DFT_ANALYTICS_CLAP      // classify whole audio frame with zero-shot classification
 }DNNFunctionType;
 
 typedef enum {
@@ -90,6 +92,16 @@ typedef struct DNNExecClassificationParams {
     const char *target;
 } DNNExecClassificationParams;
 
+typedef struct DNNExecZeroShotClassificationParams {
+    DNNExecBaseParams base;
+    const char **labels;
+    const int label_count;
+    const char *target;
+    const char *tokenizer_path;
+    const int *softmax_units;
+    const int softmax_units_count;
+} DNNExecZeroShotClassificationParams;
+
 typedef int (*FramePrePostProc)(AVFrame *frame, DNNData *model, AVFilterContext *filter_ctx);
 typedef int (*DetectPostProc)(AVFrame *frame, DNNData *output, uint32_t nb, AVFilterContext *filter_ctx);
 typedef int (*ClassifyPostProc)(AVFrame *frame, DNNData *output, uint32_t bbox_index, AVFilterContext *filter_ctx);
@@ -136,6 +148,16 @@ typedef struct OVOptions {
 typedef struct THOptions {
     const AVClass *clazz;
     int optimize;
+
+    // Contrastive Language-X Pre-training options
+    float logit_scale;
+    float temperature;
+    int forward_order;  // Order of forward output (0: media text, 1: text media)
+    int normalize;      // Normalize the input tensor
+    int64_t token_dimension;
+    int64_t input_resolution;
+    int64_t sample_rate;
+    int64_t sample_duration;
 } THOptions;
 
 typedef struct DNNModule DNNModule;
@@ -177,6 +199,8 @@ struct DNNModule {
     DNNBackendType type;
     // Loads model and parameters from given file. Returns NULL if it is not possible.
     DNNModel *(*load_model)(DnnContext *ctx, DNNFunctionType func_type, AVFilterContext *filter_ctx);
+    // Loads model, tokenizer and parameters from given file. Returns NULL if it is not possible.
+    DNNModel *(*load_model_with_tokenizer)(DnnContext *ctx, DNNFunctionType func_type, const char** labels, int label_count, int* softmax_units, int softmax_units_count, const char* tokenizer_path, AVFilterContext *filter_ctx);
     // Executes model with specified input and output. Returns the error code otherwise.
     int (*execute_model)(const DNNModel *model, DNNExecBaseParams *exec_params);
     // Retrieve inference result.
-- 
2.34.1


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