[Mesa-dev] [PATCH 11/20] st/va: add huffman table handling for MJPEG

Leo Liu leo.liu at amd.com
Wed Aug 16 17:53:14 UTC 2017


Signed-off-by: Leo Liu <leo.liu at amd.com>
Reviewed-by: Christian K├Ânig <christian.koenig at amd.com>
---
 src/gallium/state_trackers/va/picture_mjpeg.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/gallium/state_trackers/va/picture_mjpeg.c b/src/gallium/state_trackers/va/picture_mjpeg.c
index 09b2efc21b..17f077962e 100644
--- a/src/gallium/state_trackers/va/picture_mjpeg.c
+++ b/src/gallium/state_trackers/va/picture_mjpeg.c
@@ -63,7 +63,24 @@ void vlVaHandleIQMatrixBufferMJPEG(vlVaContext *context, vlVaBuffer *buf)
 
 void vlVaHandleHuffmanTableBufferType(vlVaContext *context, vlVaBuffer *buf)
 {
-   /* TODO */
+   VAHuffmanTableBufferJPEGBaseline *mjpeg = buf->data;
+   int i;
+
+   assert(buf->size >= sizeof(VASliceParameterBufferJPEGBaseline) && buf->num_elements == 1);
+
+   for (i = 0; i < 2; ++i) {
+      context->desc.mjpeg.huffman_table.load_huffman_table[i] = mjpeg->load_huffman_table[i];
+
+      memcpy(&context->desc.mjpeg.huffman_table.table[i].num_dc_codes,
+         mjpeg->huffman_table[i].num_dc_codes, 16);
+      memcpy(&context->desc.mjpeg.huffman_table.table[i].dc_values,
+         mjpeg->huffman_table[i].dc_values, 12);
+      memcpy(&context->desc.mjpeg.huffman_table.table[i].num_ac_codes,
+         mjpeg->huffman_table[i].num_ac_codes, 16);
+      memcpy(&context->desc.mjpeg.huffman_table.table[i].ac_values,
+         mjpeg->huffman_table[i].ac_values, 162);
+      memcpy(&context->desc.mjpeg.huffman_table.table[i].pad, mjpeg->huffman_table[i].pad, 2);
+   }
 }
 
 void vlVaHandleSliceParameterBufferMJPEG(vlVaContext *context, vlVaBuffer *buf)
-- 
2.11.0



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