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codecparsers: h265: add helpers to convert quantization matrices
Add utility functions to convert quantization matrices from zig-zag scan order into raster scan order and vice-versa https://bugzilla.gnome.org/show_bug.cgi?id=747613
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2 changed files with 139 additions and 0 deletions
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@ -131,6 +131,24 @@ static const guint8 default_scaling_list2[64] = {
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54, 71, 71, 91
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54, 71, 71, 91
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};
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};
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static const guint8 zigzag_4x4[16] = {
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0, 1, 4, 8,
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5, 2, 3, 6,
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9, 12, 13, 10,
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7, 11, 14, 15,
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};
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static const guint8 zigzag_8x8[64] = {
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0, 1, 8, 16, 9, 2, 3, 10,
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17, 24, 32, 25, 18, 11, 4, 5,
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12, 19, 26, 33, 40, 48, 41, 34,
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27, 20, 13, 6, 7, 14, 21, 28,
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35, 42, 49, 56, 57, 50, 43, 36,
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29, 22, 15, 23, 30, 37, 44, 51,
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58, 59, 52, 45, 38, 31, 39, 46,
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53, 60, 61, 54, 47, 55, 62, 63
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};
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typedef struct
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typedef struct
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{
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{
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guint par_n, par_d;
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guint par_n, par_d;
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@ -2385,3 +2403,103 @@ gst_h265_sei_free (GstH265SEIMessage * sei)
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pic_timing->du_cpb_removal_delay_increment_minus1 = 0;
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pic_timing->du_cpb_removal_delay_increment_minus1 = 0;
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}
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}
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}
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}
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/**
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* gst_h265_quant_matrix_4x4_get_zigzag_from_raster:
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* @out_quant: (out): The resulting quantization matrix
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* @quant: The source quantization matrix
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*
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* Converts quantization matrix @quant from raster scan order to
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* zigzag scan order and store the resulting factors into @out_quant.
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*
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* Note: it is an error to pass the same table in both @quant and
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* @out_quant arguments.
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*
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* Since: 1.6
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*/
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void
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gst_h265_quant_matrix_4x4_get_zigzag_from_raster (guint8 out_quant[16],
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const guint8 quant[16])
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{
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guint i;
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g_return_if_fail (out_quant != quant);
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for (i = 0; i < 16; i++)
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out_quant[i] = quant[zigzag_4x4[i]];
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}
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/**
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* gst_h265_quant_matrix_4x4_get_raster_from_zigzag:
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* @out_quant: (out): The resulting quantization matrix
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* @quant: The source quantization matrix
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*
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* Converts quantization matrix @quant from zigzag scan order to
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* raster scan order and store the resulting factors into @out_quant.
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*
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* Note: it is an error to pass the same table in both @quant and
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* @out_quant arguments.
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*
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* Since: 1.6
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*/
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void
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gst_h265_quant_matrix_4x4_get_raster_from_zigzag (guint8 out_quant[16],
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const guint8 quant[16])
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{
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guint i;
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g_return_if_fail (out_quant != quant);
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for (i = 0; i < 16; i++)
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out_quant[zigzag_4x4[i]] = quant[i];
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}
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/**
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* gst_h265_quant_matrix_8x8_get_zigzag_from_raster:
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* @out_quant: (out): The resulting quantization matrix
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* @quant: The source quantization matrix
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*
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* Converts quantization matrix @quant from raster scan order to
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* zigzag scan order and store the resulting factors into @out_quant.
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*
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* Note: it is an error to pass the same table in both @quant and
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* @out_quant arguments.
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*
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* Since: 1.6
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*/
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void
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gst_h265_quant_matrix_8x8_get_zigzag_from_raster (guint8 out_quant[64],
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const guint8 quant[64])
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{
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guint i;
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g_return_if_fail (out_quant != quant);
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for (i = 0; i < 64; i++)
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out_quant[i] = quant[zigzag_8x8[i]];
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}
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/**
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* gst_h265_quant_matrix_8x8_get_raster_from_zigzag:
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* @out_quant: (out): The resulting quantization matrix
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* @quant: The source quantization matrix
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*
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* Converts quantization matrix @quant from zigzag scan order to
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* raster scan order and store the resulting factors into @out_quant.
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*
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* Note: it is an error to pass the same table in both @quant and
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* @out_quant arguments.
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*
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* Since: 1.6
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*/
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void
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gst_h265_quant_matrix_8x8_get_raster_from_zigzag (guint8 out_quant[64],
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const guint8 quant[64])
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{
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guint i;
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g_return_if_fail (out_quant != quant);
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for (i = 0; i < 64; i++)
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out_quant[zigzag_8x8[i]] = quant[i];
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}
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@ -1061,5 +1061,26 @@ gboolean gst_h265_sei_copy (GstH265SEIMessage * dest_sei,
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void gst_h265_sei_free (GstH265SEIMessage * sei);
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void gst_h265_sei_free (GstH265SEIMessage * sei);
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void gst_h265_quant_matrix_4x4_get_zigzag_from_raster (guint8 out_quant[16],
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const guint8 quant[16]);
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void gst_h265_quant_matrix_4x4_get_raster_from_zigzag (guint8 out_quant[16],
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const guint8 quant[16]);
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void gst_h265_quant_matrix_8x8_get_zigzag_from_raster (guint8 out_quant[64],
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const guint8 quant[64]);
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void gst_h265_quant_matrix_8x8_get_raster_from_zigzag (guint8 out_quant[64],
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const guint8 quant[64]);
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#define gst_h265_quant_matrix_16x16_get_zigzag_from_raster \
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gst_h265_quant_matrix_8x8_get_zigzag_from_raster
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#define gst_h265_quant_matrix_16x16_get_raster_from_zigzag \
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gst_h265_quant_matrix_8x8_get_raster_from_zigzag
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#define gst_h265_quant_matrix_32x32_get_zigzag_from_raster \
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gst_h265_quant_matrix_8x8_get_zigzag_from_raster
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#define gst_h265_quant_matrix_32x32_get_raster_from_zigzag \
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gst_h265_quant_matrix_8x8_get_raster_from_zigzag
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G_END_DECLS
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G_END_DECLS
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#endif
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#endif
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