Re: [PATCH 04/15] server: move bitmap related to spice-bitmap-utils

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On Tue, 2015-11-03 at 10:20 +0000, Frediano Ziglio wrote:
> From: Marc-André Lureau <marcandre.lureau@xxxxxxxxx>
> 
> ---
>  server/Makefile.am          |   2 +
>  server/red_common.h         |  13 ----
>  server/red_parse_qxl.c      |   1 +
>  server/red_worker.c         | 158 ++++------------------------------
> ----------
>  server/spice-bitmap-utils.c | 119 +++++++++++++++++++++++++++++++++
>  server/spice-bitmap-utils.h |  91 +++++++++++++++++++++++++
>  server/tree.h               |   9 +--
>  7 files changed, 226 insertions(+), 167 deletions(-)
>  create mode 100644 server/spice-bitmap-utils.c
>  create mode 100644 server/spice-bitmap-utils.h
> 
> diff --git a/server/Makefile.am b/server/Makefile.am
> index d2a7343..7216ab0 100644
> --- a/server/Makefile.am
> +++ b/server/Makefile.am
> @@ -133,6 +133,8 @@ libspice_server_la_SOURCES =			
> \
>  	pixmap-cache.c				\
>  	tree.h				\
>  	tree.c				\
> +	spice-bitmap-utils.h			\
> +	spice-bitmap-utils.c			\
>  	utils.h					\
>  	$(NULL)
>  
> diff --git a/server/red_common.h b/server/red_common.h
> index 47e591d..04d4c02 100644
> --- a/server/red_common.h
> +++ b/server/red_common.h
> @@ -44,17 +44,4 @@ static const LzImageType
> MAP_BITMAP_FMT_TO_LZ_IMAGE_TYPE[] = {
>      LZ_IMAGE_TYPE_A8
>  };
>  
> -static inline int bitmap_fmt_is_rgb(uint8_t fmt)
> -{
> -    static const int BITMAP_FMT_IS_RGB[SPICE_BITMAP_FMT_ENUM_END] =
> -                                        {0, 0, 0, 0, 0, 0, 1, 1, 1,
> 1, 1};
> -
> -    if (fmt >= SPICE_BITMAP_FMT_ENUM_END) {
> -        spice_warning("fmt >= SPICE_BITMAP_FMT_ENUM_END; %d >= %d",
> -                      fmt, SPICE_BITMAP_FMT_ENUM_END);
> -        return 0;
> -    }
> -    return BITMAP_FMT_IS_RGB[fmt];
> -}
> -
>  #endif
> diff --git a/server/red_parse_qxl.c b/server/red_parse_qxl.c
> index dd52602..5fc1a13 100644
> --- a/server/red_parse_qxl.c
> +++ b/server/red_parse_qxl.c
> @@ -23,6 +23,7 @@
>  #include <inttypes.h>
>  #include <glib.h>
>  #include "common/lz_common.h"
> +#include "spice-bitmap-utils.h"
>  #include "red_common.h"
>  #include "red_memslots.h"
>  #include "red_parse_qxl.h"
> diff --git a/server/red_worker.c b/server/red_worker.c
> index 0d0c603..bad8e47 100644
> --- a/server/red_worker.c
> +++ b/server/red_worker.c
> @@ -310,13 +310,6 @@ typedef struct StreamClipItem {
>      SpiceClipRects *rects;
>  } StreamClipItem;
>  
> -static const int BITMAP_FMT_IS_PLT[] = {0, 1, 1, 1, 1, 1, 0, 0, 0,
> 0, 0};
> -static const int BITMAP_FMP_BYTES_PER_PIXEL[] = {0, 0, 0, 0, 0, 1,
> 2, 3, 4, 4, 1};
> -
> -#define BITMAP_FMT_HAS_GRADUALITY(f)                                
>     \
> -    (bitmap_fmt_is_rgb(f)        &&                                 
>     \
> -     ((f) != SPICE_BITMAP_FMT_8BIT_A))
> -
>  typedef struct {
>      QuicUsrContext usr;
>      EncoderData data;
> @@ -613,10 +606,6 @@ static int
> red_display_free_some_independent_glz_drawables(DisplayChannelClient
>  static void red_display_free_glz_drawable(DisplayChannelClient *dcc,
> RedGlzDrawable *drawable);
>  static ImageItem *red_add_surface_area_image(DisplayChannelClient
> *dcc, int surface_id,
>                                               SpiceRect *area,
> PipeItem *pos, int can_lossy);
> -static BitmapGradualType _get_bitmap_graduality_level(RedWorker
> *worker, SpiceBitmap *bitmap,
> -                                                      uint32_t
> group_id);
> -static inline int _stride_is_extra(SpiceBitmap *bitmap);
> -
>  static void
> display_channel_client_release_item_before_push(DisplayChannelClient
> *dcc,
>                                                              PipeItem
> *item);
>  static void
> display_channel_client_release_item_after_push(DisplayChannelClient
> *dcc,
> @@ -2650,12 +2639,11 @@ static inline void
> red_update_copy_graduality(RedWorker* worker, Drawable *drawa
>  
>      bitmap = &drawable->red_drawable->u.copy.src_bitmap->u.bitmap;
>  
> -    if (!BITMAP_FMT_HAS_GRADUALITY(bitmap->format) ||
> _stride_is_extra(bitmap) ||
> +    if (!bitmap_fmt_has_graduality(bitmap->format) ||
> bitmap_has_extra_stride(bitmap) ||
>          (bitmap->data->flags & SPICE_CHUNKS_FLAGS_UNSTABLE)) {
>          drawable->copy_bitmap_graduality = BITMAP_GRADUAL_NOT_AVAIL;
>      } else  {
> -        drawable->copy_bitmap_graduality =
> -            _get_bitmap_graduality_level(worker, bitmap,drawable
> ->group_id);
> +        drawable->copy_bitmap_graduality =
> bitmap_get_graduality_level(bitmap);
>      }
>  }
>  
> @@ -4902,124 +4890,6 @@ static inline void red_init_zlib(RedWorker
> *worker)
>      }
>  }
>  
> -typedef struct {
> -    uint8_t b;
> -    uint8_t g;
> -    uint8_t r;
> -    uint8_t pad;
> -} rgb32_pixel_t;
> -
> -G_STATIC_ASSERT(sizeof(rgb32_pixel_t) == 4);
> -
> -typedef struct {
> -    uint8_t b;
> -    uint8_t g;
> -    uint8_t r;
> -} rgb24_pixel_t;
> -
> -G_STATIC_ASSERT(sizeof(rgb24_pixel_t) == 3);
> -
> -typedef uint16_t rgb16_pixel_t;
> -
> -#define RED_BITMAP_UTILS_RGB16
> -#include "red_bitmap_utils_tmpl.c"
> -#define RED_BITMAP_UTILS_RGB24
> -#include "red_bitmap_utils_tmpl.c"
> -#define RED_BITMAP_UTILS_RGB32
> -#include "red_bitmap_utils_tmpl.c"
> -
> -#define GRADUAL_HIGH_RGB24_TH -0.03
> -#define GRADUAL_HIGH_RGB16_TH 0
> -
> -// setting a more permissive threshold for stream identification in
> order
> -// not to miss streams that were artificially scaled on the guest
> (e.g., full screen view
> -// in window media player 12). see red_stream_add_frame
> -#define GRADUAL_MEDIUM_SCORE_TH 0.002
> -
> -// assumes that stride doesn't overflow
> -static BitmapGradualType _get_bitmap_graduality_level(RedWorker
> *worker, SpiceBitmap *bitmap,
> -                                                      uint32_t
> group_id)
> -{
> -    double score = 0.0;
> -    int num_samples = 0;
> -    int num_lines;
> -    double chunk_score = 0.0;
> -    int chunk_num_samples = 0;
> -    uint32_t x, i;
> -    SpiceChunk *chunk;
> -
> -    chunk = bitmap->data->chunk;
> -    for (i = 0; i < bitmap->data->num_chunks; i++) {
> -        num_lines = chunk[i].len / bitmap->stride;
> -        x = bitmap->x;
> -        switch (bitmap->format) {
> -        case SPICE_BITMAP_FMT_16BIT:
> -            compute_lines_gradual_score_rgb16((rgb16_pixel_t
> *)chunk[i].data, x, num_lines,
> -                                              &chunk_score,
> &chunk_num_samples);
> -            break;
> -        case SPICE_BITMAP_FMT_24BIT:
> -            compute_lines_gradual_score_rgb24((rgb24_pixel_t
> *)chunk[i].data, x, num_lines,
> -                                              &chunk_score,
> &chunk_num_samples);
> -            break;
> -        case SPICE_BITMAP_FMT_32BIT:
> -        case SPICE_BITMAP_FMT_RGBA:
> -            compute_lines_gradual_score_rgb32((rgb32_pixel_t
> *)chunk[i].data, x, num_lines,
> -                                              &chunk_score,
> &chunk_num_samples);
> -            break;
> -        default:
> -            spice_error("invalid bitmap format (not RGB) %u", bitmap
> ->format);
> -        }
> -        score += chunk_score;
> -        num_samples += chunk_num_samples;
> -    }
> -
> -    spice_assert(num_samples);
> -    score /= num_samples;
> -
> -    if (bitmap->format == SPICE_BITMAP_FMT_16BIT) {
> -        if (score < GRADUAL_HIGH_RGB16_TH) {
> -            return BITMAP_GRADUAL_HIGH;
> -        }
> -    } else {
> -        if (score < GRADUAL_HIGH_RGB24_TH) {
> -            return BITMAP_GRADUAL_HIGH;
> -        }
> -    }
> -
> -    if (score < GRADUAL_MEDIUM_SCORE_TH) {
> -        return BITMAP_GRADUAL_MEDIUM;
> -    } else {
> -        return BITMAP_GRADUAL_LOW;
> -    }
> -}
> -
> -static inline int _stride_is_extra(SpiceBitmap *bitmap)
> -{
> -    spice_assert(bitmap);
> -    if (bitmap_fmt_is_rgb(bitmap->format)) {
> -        return ((bitmap->x * BITMAP_FMP_BYTES_PER_PIXEL[bitmap
> ->format]) < bitmap->stride);
> -    } else {
> -        switch (bitmap->format) {
> -        case SPICE_BITMAP_FMT_8BIT:
> -            return (bitmap->x < bitmap->stride);
> -        case SPICE_BITMAP_FMT_4BIT_BE:
> -        case SPICE_BITMAP_FMT_4BIT_LE: {
> -            int bytes_width = SPICE_ALIGN(bitmap->x, 2) >> 1;
> -            return bytes_width < bitmap->stride;
> -        }
> -        case SPICE_BITMAP_FMT_1BIT_BE:
> -        case SPICE_BITMAP_FMT_1BIT_LE: {
> -            int bytes_width = SPICE_ALIGN(bitmap->x, 8) >> 3;
> -            return bytes_width < bitmap->stride;
> -        }
> -        default:
> -            spice_error("invalid image type %u", bitmap->format);
> -            return 0;
> -        }
> -    }
> -    return 0;
> -}
> -
>  typedef struct compress_send_data_t {
>      void*    comp_buf;
>      uint32_t comp_buf_size;
> @@ -5517,7 +5387,7 @@ static inline int
> red_compress_image(DisplayChannelClient *dcc,
>          ((src->y * src->stride) < MIN_SIZE_TO_COMPRESS)) { // TODO:
> change the size cond
>          return FALSE;
>      } else if (image_compression == SPICE_IMAGE_COMPRESSION_QUIC) {
> -        if (BITMAP_FMT_IS_PLT[src->format]) {
> +        if (bitmap_fmt_is_plt(src->format)) {
>              return FALSE;
>          } else {
>              quic_compress = TRUE;
> @@ -5527,11 +5397,11 @@ static inline int
> red_compress_image(DisplayChannelClient *dcc,
>              lz doesn't handle (1) bitmaps with strides that are
> larger than the width
>              of the image in bytes (2) unstable bitmaps
>          */
> -        if (_stride_is_extra(src) || (src->data->flags &
> SPICE_CHUNKS_FLAGS_UNSTABLE)) {
> +        if (bitmap_has_extra_stride(src) || (src->data->flags &
> SPICE_CHUNKS_FLAGS_UNSTABLE)) {
>              if ((image_compression == SPICE_IMAGE_COMPRESSION_LZ) ||
>                  (image_compression == SPICE_IMAGE_COMPRESSION_GLZ)
> ||
>                  (image_compression == SPICE_IMAGE_COMPRESSION_LZ4)
> ||
> -                BITMAP_FMT_IS_PLT[src->format]) {
> +                bitmap_fmt_is_plt(src->format)) {
>                  return FALSE;
>              } else {
>                  quic_compress = TRUE;
> @@ -5543,10 +5413,8 @@ static inline int
> red_compress_image(DisplayChannelClient *dcc,
>                      quic_compress = FALSE;
>                  } else {
>                      if (drawable->copy_bitmap_graduality ==
> BITMAP_GRADUAL_INVALID) {
> -                        quic_compress =
> BITMAP_FMT_HAS_GRADUALITY(src->format) &&
> -                           
>  (_get_bitmap_graduality_level(display_channel->common.worker, src,
> -                                                          drawable
> ->group_id) ==
> -                             BITMAP_GRADUAL_HIGH);
> +                        quic_compress =
> bitmap_fmt_has_graduality(src->format) &&
> +                            bitmap_get_graduality_level(src) ==
> BITMAP_GRADUAL_HIGH;
>                      } else {
>                          quic_compress = (drawable
> ->copy_bitmap_graduality == BITMAP_GRADUAL_HIGH);
>                      }
> @@ -5566,7 +5434,7 @@ static inline int
> red_compress_image(DisplayChannelClient *dcc,
>              ((image_compression == SPICE_IMAGE_COMPRESSION_AUTO_LZ)
> ||
>              (image_compression ==
> SPICE_IMAGE_COMPRESSION_AUTO_GLZ))) {
>              // if we use lz for alpha, the stride can't be extra
> -            if (src->format != SPICE_BITMAP_FMT_RGBA ||
> !_stride_is_extra(src)) {
> +            if (src->format != SPICE_BITMAP_FMT_RGBA ||
> !bitmap_has_extra_stride(src)) {
>                  return red_jpeg_compress_image(dcc, dest,
>                                                 src, o_comp_data,
> drawable->group_id);
>              }
> @@ -5578,7 +5446,7 @@ static inline int
> red_compress_image(DisplayChannelClient *dcc,
>          int ret;
>          if ((image_compression == SPICE_IMAGE_COMPRESSION_AUTO_GLZ)
> ||
>              (image_compression == SPICE_IMAGE_COMPRESSION_GLZ)) {
> -            glz = BITMAP_FMT_HAS_GRADUALITY(src->format) && (
> +            glz = bitmap_fmt_has_graduality(src->format) && (
>                      (src->x * src->y) < glz_enc_dictionary_get_size(
>                          dcc->glz_dict->dict));
>          } else if ((image_compression ==
> SPICE_IMAGE_COMPRESSION_AUTO_LZ) ||
> @@ -7847,14 +7715,12 @@ static void
> red_marshall_image(RedChannelClient *rcc, SpiceMarshaller *m, ImageI
>      comp_mode = display_channel->common.worker->image_compression;
>  
>      if (((comp_mode == SPICE_IMAGE_COMPRESSION_AUTO_LZ) ||
> -        (comp_mode == SPICE_IMAGE_COMPRESSION_AUTO_GLZ)) &&
> !_stride_is_extra(&bitmap)) {
> +        (comp_mode == SPICE_IMAGE_COMPRESSION_AUTO_GLZ)) &&
> !bitmap_has_extra_stride(&bitmap)) {
>  
> -        if (BITMAP_FMT_HAS_GRADUALITY(item->image_format)) {
> +        if (bitmap_fmt_has_graduality(item->image_format)) {
>              BitmapGradualType grad_level;
>  
> -            grad_level =
> _get_bitmap_graduality_level(display_channel->common.worker,
> -                                                      &bitmap,
> -                                                      worker
> ->mem_slots.internal_groupslot_id);
> +            grad_level = bitmap_get_graduality_level(&bitmap);
>              if (grad_level == BITMAP_GRADUAL_HIGH) {
>                  // if we use lz for alpha, the stride can't be extra
>                  lossy_comp = display_channel->enable_jpeg && item
> ->can_lossy;
> diff --git a/server/spice-bitmap-utils.c b/server/spice-bitmap
> -utils.c
> new file mode 100644
> index 0000000..c4ec625
> --- /dev/null
> +++ b/server/spice-bitmap-utils.c
> @@ -0,0 +1,119 @@
> +/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
> +/*
> +   Copyright (C) 2009-2015 Red Hat, Inc.
> +
> +   This library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later
> version.
> +
> +   This library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with this library; if not, see <
> http://www.gnu.org/licenses/>.
> +*/
> +#ifdef HAVE_CONFIG_H
> +#include <config.h>
> +#endif
> +#include "spice-bitmap-utils.h"
> +
> +#define RED_BITMAP_UTILS_RGB16
> +#include "red_bitmap_utils_tmpl.c"
> +#define RED_BITMAP_UTILS_RGB24
> +#include "red_bitmap_utils_tmpl.c"
> +#define RED_BITMAP_UTILS_RGB32
> +#include "red_bitmap_utils_tmpl.c"
> +
> +#define GRADUAL_HIGH_RGB24_TH -0.03
> +#define GRADUAL_HIGH_RGB16_TH 0
> +
> +// setting a more permissive threshold for stream identification in
> order
> +// not to miss streams that were artificially scaled on the guest
> (e.g., full screen view
> +// in window media player 12). see red_stream_add_frame
> +#define GRADUAL_MEDIUM_SCORE_TH 0.002
> +
> +// assumes that stride doesn't overflow
> +BitmapGradualType bitmap_get_graduality_level(SpiceBitmap *bitmap)
> +{
> +    double score = 0.0;
> +    int num_samples = 0;
> +    int num_lines;
> +    double chunk_score = 0.0;
> +    int chunk_num_samples = 0;
> +    uint32_t x, i;
> +    SpiceChunk *chunk;
> +
> +    chunk = bitmap->data->chunk;
> +    for (i = 0; i < bitmap->data->num_chunks; i++) {
> +        num_lines = chunk[i].len / bitmap->stride;
> +        x = bitmap->x;
> +        switch (bitmap->format) {
> +        case SPICE_BITMAP_FMT_16BIT:
> +            compute_lines_gradual_score_rgb16((rgb16_pixel_t
> *)chunk[i].data, x, num_lines,
> +                                              &chunk_score,
> &chunk_num_samples);
> +            break;
> +        case SPICE_BITMAP_FMT_24BIT:
> +            compute_lines_gradual_score_rgb24((rgb24_pixel_t
> *)chunk[i].data, x, num_lines,
> +                                              &chunk_score,
> &chunk_num_samples);
> +            break;
> +        case SPICE_BITMAP_FMT_32BIT:
> +        case SPICE_BITMAP_FMT_RGBA:
> +            compute_lines_gradual_score_rgb32((rgb32_pixel_t
> *)chunk[i].data, x, num_lines,
> +                                              &chunk_score,
> &chunk_num_samples);
> +            break;
> +        default:
> +            spice_error("invalid bitmap format (not RGB) %u", bitmap
> ->format);
> +        }
> +        score += chunk_score;
> +        num_samples += chunk_num_samples;
> +    }
> +
> +    spice_assert(num_samples);
> +    score /= num_samples;
> +
> +    if (bitmap->format == SPICE_BITMAP_FMT_16BIT) {
> +        if (score < GRADUAL_HIGH_RGB16_TH) {
> +            return BITMAP_GRADUAL_HIGH;
> +        }
> +    } else {
> +        if (score < GRADUAL_HIGH_RGB24_TH) {
> +            return BITMAP_GRADUAL_HIGH;
> +        }
> +    }
> +
> +    if (score < GRADUAL_MEDIUM_SCORE_TH) {
> +        return BITMAP_GRADUAL_MEDIUM;
> +    } else {
> +        return BITMAP_GRADUAL_LOW;
> +    }
> +}
> +
> +int bitmap_has_extra_stride(SpiceBitmap *bitmap)
> +{
> +    spice_assert(bitmap);
> +    if (bitmap_fmt_is_rgb(bitmap->format)) {
> +        return ((bitmap->x * bitmap_fmt_get_bytes_per_pixel(bitmap
> ->format)) < bitmap->stride);
> +    } else {
> +        switch (bitmap->format) {
> +        case SPICE_BITMAP_FMT_8BIT:
> +            return (bitmap->x < bitmap->stride);
> +        case SPICE_BITMAP_FMT_4BIT_BE:
> +        case SPICE_BITMAP_FMT_4BIT_LE: {
> +            int bytes_width = SPICE_ALIGN(bitmap->x, 2) >> 1;
> +            return bytes_width < bitmap->stride;
> +        }
> +        case SPICE_BITMAP_FMT_1BIT_BE:
> +        case SPICE_BITMAP_FMT_1BIT_LE: {
> +            int bytes_width = SPICE_ALIGN(bitmap->x, 8) >> 3;
> +            return bytes_width < bitmap->stride;
> +        }
> +        default:
> +            spice_error("invalid image type %u", bitmap->format);
> +            return 0;
> +        }
> +    }
> +    return 0;
> +}
> diff --git a/server/spice-bitmap-utils.h b/server/spice-bitmap
> -utils.h
> new file mode 100644
> index 0000000..38cb88a
> --- /dev/null
> +++ b/server/spice-bitmap-utils.h
> @@ -0,0 +1,91 @@
> +/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
> +/*
> +   Copyright (C) 2009-2015 Red Hat, Inc.
> +
> +   This library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later
> version.
> +
> +   This library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with this library; if not, see <
> http://www.gnu.org/licenses/>.
> +*/
> +#ifndef RED_BITMAP_UTILS_H_
> +# define RED_BITMAP_UTILS_H_
> +
> +#include <glib.h>
> +#include <stdint.h>
> +#include "common/draw.h"
> +#include "common/log.h"
> +
> +typedef enum {
> +    BITMAP_GRADUAL_INVALID,
> +    BITMAP_GRADUAL_NOT_AVAIL,
> +    BITMAP_GRADUAL_LOW,
> +    BITMAP_GRADUAL_MEDIUM,
> +    BITMAP_GRADUAL_HIGH,
> +} BitmapGradualType;
> +
> +typedef struct {
> +    uint8_t b;
> +    uint8_t g;
> +    uint8_t r;
> +    uint8_t pad;
> +} rgb32_pixel_t;
> +
> +G_STATIC_ASSERT(sizeof(rgb32_pixel_t) == 4);
> +
> +typedef struct {
> +    uint8_t b;
> +    uint8_t g;
> +    uint8_t r;
> +} rgb24_pixel_t;
> +
> +G_STATIC_ASSERT(sizeof(rgb24_pixel_t) == 3);
> +
> +typedef uint16_t rgb16_pixel_t;
> +
> +
> +static inline int bitmap_fmt_get_bytes_per_pixel(uint8_t fmt)
> +{
> +    static const int bytes_per_pixel[] = {0, 0, 0, 0, 0, 1, 2, 3, 4,
> 4, 1};
> +
> +    spice_return_val_if_fail(fmt <
> SPICE_N_ELEMENTS(bytes_per_pixel), 0);
> +
> +    return bytes_per_pixel[fmt];
> +}
> +
> +
> +static inline int bitmap_fmt_is_plt(uint8_t fmt)
> +{
> +    static const int fmt_is_plt[] = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0,
> 0};
> +
> +    spice_return_val_if_fail(fmt < SPICE_N_ELEMENTS(fmt_is_plt), 0);
> +
> +    return fmt_is_plt[fmt];
> +}
> +
> +static inline int bitmap_fmt_is_rgb(uint8_t fmt)
> +{
> +    static const int fmt_is_rgb[] = {0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
> 1};
> +
> +    spice_return_val_if_fail(fmt < SPICE_N_ELEMENTS(fmt_is_rgb), 0);
> +
> +    return fmt_is_rgb[fmt];
> +}
> +
> +static inline int bitmap_fmt_has_graduality(uint8_t fmt)
> +{
> +    return bitmap_fmt_is_rgb(fmt) && fmt != SPICE_BITMAP_FMT_8BIT_A;
> +}
> +
> +
> +BitmapGradualType bitmap_get_graduality_level     (SpiceBitmap
> *bitmap);
> +int               bitmap_has_extra_stride         (SpiceBitmap
> *bitmap);
> +
> +#endif /* RED_BITMAP_UTILS_H_ */
> diff --git a/server/tree.h b/server/tree.h
> index 8cd7b05..77f1fbf 100644
> --- a/server/tree.h
> +++ b/server/tree.h
> @@ -21,6 +21,7 @@
>  #include <stdint.h>
>  #include "common/region.h"
>  #include "common/ring.h"
> +#include "spice-bitmap-utils.h"
>  
>  enum {
>      TREE_ITEM_TYPE_NONE,
> @@ -64,14 +65,6 @@ struct DrawItem {
>  
>  #define IS_DRAW_ITEM(item) ((item)->type == TREE_ITEM_TYPE_DRAWABLE)
>  
> -typedef enum {
> -    BITMAP_GRADUAL_INVALID,
> -    BITMAP_GRADUAL_NOT_AVAIL,
> -    BITMAP_GRADUAL_LOW,
> -    BITMAP_GRADUAL_MEDIUM,
> -    BITMAP_GRADUAL_HIGH,
> -} BitmapGradualType;
> -
>  typedef struct DependItem {
>      Drawable *drawable;
>      RingItem ring_item;



ACK from me. I almost want to suggest changing some of these functions
from an int return type to gboolean while we're moving them, but I
don't know if it's really important enough to (potentially) introduce
rebasing conflicts.

Also, it's probably worth mentioning in the commit log that we're
removing some unused parameters from bitmap_get_graduality_level()

Jonathon
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