COMPMID-556 Fix Channel Extract documentation

Change-Id: Iac5fd0800953f6db040f025313e5077fcad74af6
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/112931
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/core/CL/kernels/CLChannelExtractKernel.h b/arm_compute/core/CL/kernels/CLChannelExtractKernel.h
index 404b2d1..96ce442 100644
--- a/arm_compute/core/CL/kernels/CLChannelExtractKernel.h
+++ b/arm_compute/core/CL/kernels/CLChannelExtractKernel.h
@@ -53,14 +53,14 @@
     ~CLChannelExtractKernel() = default;
     /** Set the input and output of the kernel
      *
-     * @param[in]  input   Source tensor.
+     * @param[in]  input   Source tensor. Formats supported: RGB888/RGBA8888/YUYV422/UYVY422
      * @param[in]  channel Channel to extract.
      * @param[out] output  Destination tensor. Must be of U8 format.
      */
     void configure(const ICLTensor *input, Channel channel, ICLTensor *output);
     /** Set the input and output of the kernel
      *
-     * @param[in]  input   Multi-planar source image.
+     * @param[in]  input   Multi-planar source image. Formats supported: NV12/NV21/IYUV/YUV444
      * @param[in]  channel Channel to extract.
      * @param[out] output  Single-planar 2D destination image. Must be of U8 format.
      */
diff --git a/arm_compute/runtime/CL/functions/CLChannelExtract.h b/arm_compute/runtime/CL/functions/CLChannelExtract.h
index 1753374..9182fef 100644
--- a/arm_compute/runtime/CL/functions/CLChannelExtract.h
+++ b/arm_compute/runtime/CL/functions/CLChannelExtract.h
@@ -39,14 +39,14 @@
 public:
     /** Initialize the function's source, destination
      *
-     * @param[in]  input   The input tensor to extract the channel from. Formats supported: Any single planar.
+     * @param[in]  input   The input tensor to extract the channel from. Formats supported: RGB888/RGBA8888/YUYV422/UYVY422
      * @param[in]  channel The channel to extract.
      * @param[out] output  The extracted channel. Must be of U8 format.
      */
     void configure(const ICLTensor *input, Channel channel, ICLTensor *output);
     /** Initialize the function's source, destination
      *
-     * @param[in]  input   The multi-planar input image to extract channel from.
+     * @param[in]  input   The multi-planar input image to extract channel from. Formats supported: NV12/NV21/IYUV/YUV444
      * @param[in]  channel The channel to extract.
      * @param[out] output  The extracted 2D channel. Must be of U8 format.
      */
diff --git a/arm_compute/runtime/NEON/functions/NEChannelExtract.h b/arm_compute/runtime/NEON/functions/NEChannelExtract.h
index 5e46eef..1620d3a 100644
--- a/arm_compute/runtime/NEON/functions/NEChannelExtract.h
+++ b/arm_compute/runtime/NEON/functions/NEChannelExtract.h
@@ -39,14 +39,14 @@
 public:
     /** Initialize the function's source, destination
      *
-     * @param[in]  input   The input tensor to extract the channel from. Formats supported: Any single planar.
+     * @param[in]  input   The input tensor to extract the channel from. Formats supported: Formats supported: RGB888/RGBA8888/YUYV422/UYVY422
      * @param[in]  channel The channel to extract.
      * @param[out] output  The extracted channel. Format supported: U8
      */
     void configure(const ITensor *input, Channel channel, ITensor *output);
     /** Initialize the function's source, destination
      *
-     * @param[in]  input   The multi-planar input image to extract channel from.
+     * @param[in]  input   The multi-planar input image to extract channel from. Formats supported: NV12/NV21/IYUV/YUV444
      * @param[in]  channel The channel to extract.
      * @param[out] output  The extracted channel. Format supported: U8
      */