summaryrefslogtreecommitdiff
path: root/src/libffmpeg/libavcodec/imgconvert.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libffmpeg/libavcodec/imgconvert.c')
-rw-r--r--src/libffmpeg/libavcodec/imgconvert.c1723
1 files changed, 1118 insertions, 605 deletions
diff --git a/src/libffmpeg/libavcodec/imgconvert.c b/src/libffmpeg/libavcodec/imgconvert.c
index ca1aec6ad..6a36c8558 100644
--- a/src/libffmpeg/libavcodec/imgconvert.c
+++ b/src/libffmpeg/libavcodec/imgconvert.c
@@ -22,6 +22,11 @@
* Misc image convertion routines.
*/
+/* TODO:
+ * - write 'ffimg' program to test all the image related stuff
+ * - move all api to slice based system
+ * - integrate deinterlacing, postprocessing and scaling in the conversion process
+ */
#include "avcodec.h"
#include "dsputil.h"
@@ -34,16 +39,27 @@
#include "i386/mmx.h"
#endif
+#define xglue(x, y) x ## y
+#define glue(x, y) xglue(x, y)
+
+#define FF_COLOR_RGB 0 /* RGB color space */
+#define FF_COLOR_GRAY 1 /* gray color space */
+#define FF_COLOR_YUV 2 /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
+#define FF_COLOR_YUV_JPEG 3 /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
+
+#define FF_PIXEL_PLANAR 0 /* each channel has one component in AVPicture */
+#define FF_PIXEL_PACKED 1 /* only one components containing all the channels */
+#define FF_PIXEL_PALETTE 2 /* one components containing indexes for a palette */
+
typedef struct PixFmtInfo {
const char *name;
- uint8_t nb_components; /* number of components in AVPicture array */
- uint8_t is_yuv : 1; /* true if YUV instead of RGB color space */
- uint8_t is_packed : 1; /* true if multiple components in same word */
- uint8_t is_paletted : 1; /* true if paletted */
+ uint8_t nb_channels; /* number of channels (including alpha) */
+ uint8_t color_type; /* color type (see FF_COLOR_xxx constants) */
+ uint8_t pixel_type; /* pixel storage type (see FF_PIXEL_xxx constants) */
uint8_t is_alpha : 1; /* true if alpha can be specified */
- uint8_t is_gray : 1; /* true if gray or monochrome format */
- uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
- uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
+ uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
+ uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
+ uint8_t depth; /* bit depth of the color components */
} PixFmtInfo;
/* this table gives more information about formats */
@@ -51,87 +67,153 @@ static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
/* YUV formats */
[PIX_FMT_YUV420P] = {
.name = "yuv420p",
- .nb_components = 3, .is_yuv = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUV422P] = {
.name = "yuv422p",
- .nb_components = 3, .is_yuv = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV444P] = {
.name = "yuv444p",
- .nb_components = 3, .is_yuv = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUV422] = {
.name = "yuv422",
- .nb_components = 1, .is_yuv = 1, .is_packed = 1,
+ .nb_channels = 1,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV410P] = {
.name = "yuv410p",
- .nb_components = 3, .is_yuv = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 2,
},
[PIX_FMT_YUV411P] = {
.name = "yuv411p",
- .nb_components = 3, .is_yuv = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
+ /* JPEG YUV */
+ [PIX_FMT_YUVJ420P] = {
+ .name = "yuvj420p",
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV_JPEG,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
+ .x_chroma_shift = 1, .y_chroma_shift = 1,
+ },
+ [PIX_FMT_YUVJ422P] = {
+ .name = "yuvj422p",
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV_JPEG,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
+ .x_chroma_shift = 1, .y_chroma_shift = 0,
+ },
+ [PIX_FMT_YUVJ444P] = {
+ .name = "yuvj444p",
+ .nb_channels = 3,
+ .color_type = FF_COLOR_YUV_JPEG,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
+ .x_chroma_shift = 0, .y_chroma_shift = 0,
+ },
+
/* RGB formats */
[PIX_FMT_RGB24] = {
.name = "rgb24",
- .nb_components = 1, .is_packed = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 8,
},
[PIX_FMT_BGR24] = {
.name = "bgr24",
- .nb_components = 1, .is_packed = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 8,
},
[PIX_FMT_RGBA32] = {
.name = "rgba32",
- .nb_components = 1, .is_packed = 1, .is_alpha = 1,
+ .nb_channels = 4, .is_alpha = 1,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 8,
},
[PIX_FMT_RGB565] = {
.name = "rgb565",
- .nb_components = 1, .is_packed = 1,
+ .nb_channels = 3,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 5,
},
[PIX_FMT_RGB555] = {
.name = "rgb555",
- .nb_components = 1, .is_packed = 1, .is_alpha = 1,
+ .nb_channels = 4, .is_alpha = 1,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PACKED,
+ .depth = 5,
},
/* gray / mono formats */
[PIX_FMT_GRAY8] = {
.name = "gray",
- .nb_components = 1, .is_gray = 1,
+ .nb_channels = 1,
+ .color_type = FF_COLOR_GRAY,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 8,
},
[PIX_FMT_MONOWHITE] = {
.name = "monow",
- .nb_components = 1, .is_packed = 1, .is_gray = 1,
+ .nb_channels = 1,
+ .color_type = FF_COLOR_GRAY,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 1,
},
[PIX_FMT_MONOBLACK] = {
.name = "monob",
- .nb_components = 1, .is_packed = 1, .is_gray = 1,
+ .nb_channels = 1,
+ .color_type = FF_COLOR_GRAY,
+ .pixel_type = FF_PIXEL_PLANAR,
+ .depth = 1,
},
/* paletted formats */
[PIX_FMT_PAL8] = {
.name = "pal8",
- .nb_components = 1, .is_packed = 1, .is_paletted = 1,
+ .nb_channels = 4, .is_alpha = 1,
+ .color_type = FF_COLOR_RGB,
+ .pixel_type = FF_PIXEL_PALETTE,
+ .depth = 8,
},
};
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
{
- if (pix_fmt_info[pix_fmt].is_yuv) {
- *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
- *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
- } else {
- *h_shift=0;
- *v_shift=0;
- }
+ *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
+ *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
}
const char *avcodec_get_pix_fmt_name(int pix_fmt)
@@ -142,6 +224,16 @@ const char *avcodec_get_pix_fmt_name(int pix_fmt)
return pix_fmt_info[pix_fmt].name;
}
+enum PixelFormat avcodec_get_pix_fmt(const char* name)
+{
+ int i;
+
+ for (i=0; i < PIX_FMT_NB; i++)
+ if (!strcmp(pix_fmt_info[i].name, name))
+ break;
+ return i;
+}
+
/* Picture field are filled with 'ptr' addresses. Also return size */
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height)
@@ -157,6 +249,9 @@ int avpicture_fill(AVPicture *picture, uint8_t *ptr,
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
+ case PIX_FMT_YUVJ420P:
+ case PIX_FMT_YUVJ422P:
+ case PIX_FMT_YUVJ444P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = w2 * h2;
@@ -218,28 +313,298 @@ int avpicture_fill(AVPicture *picture, uint8_t *ptr,
}
}
+int avpicture_layout(AVPicture* src, int pix_fmt, int width, int height,
+ unsigned char *dest, int dest_size)
+{
+ PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
+ int i, j, w, h, data_planes;
+ unsigned char* s;
+ int size = avpicture_get_size(pix_fmt, width, height);
+
+ if (size > dest_size)
+ return -1;
+
+ if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
+ if (pix_fmt == PIX_FMT_YUV422 || pix_fmt == PIX_FMT_RGB565 ||
+ pix_fmt == PIX_FMT_RGB555)
+ w = width * 2;
+ else if (pix_fmt == PIX_FMT_PAL8)
+ w = width;
+ else
+ w = width * (pf->depth * pf->nb_channels / 8);
+
+ data_planes = 1;
+ h = height;
+ } else {
+ data_planes = pf->nb_channels;
+ w = width;
+ h = height;
+ }
+
+ for (i=0; i<data_planes; i++) {
+ if (i == 1) {
+ w = width >> pf->x_chroma_shift;
+ h = height >> pf->y_chroma_shift;
+ }
+ s = src->data[i];
+ for(j=0; j<h; j++) {
+ memcpy(dest, s, w);
+ dest += w;
+ s += src->linesize[i];
+ }
+ }
+
+ if (pf->pixel_type == FF_PIXEL_PALETTE)
+ memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
+
+ return size;
+}
+
int avpicture_get_size(int pix_fmt, int width, int height)
{
AVPicture dummy_pict;
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
}
+/**
+ * compute the loss when converting from a pixel format to another
+ */
+int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
+ int has_alpha)
+{
+ const PixFmtInfo *pf, *ps;
+ int loss;
+
+ ps = &pix_fmt_info[src_pix_fmt];
+ pf = &pix_fmt_info[dst_pix_fmt];
+
+ /* compute loss */
+ loss = 0;
+ pf = &pix_fmt_info[dst_pix_fmt];
+ if (pf->depth < ps->depth ||
+ (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
+ loss |= FF_LOSS_DEPTH;
+ if (pf->x_chroma_shift > ps->x_chroma_shift ||
+ pf->y_chroma_shift > ps->y_chroma_shift)
+ loss |= FF_LOSS_RESOLUTION;
+ switch(pf->color_type) {
+ case FF_COLOR_RGB:
+ if (ps->color_type != FF_COLOR_RGB &&
+ ps->color_type != FF_COLOR_GRAY)
+ loss |= FF_LOSS_COLORSPACE;
+ break;
+ case FF_COLOR_GRAY:
+ if (ps->color_type != FF_COLOR_GRAY)
+ loss |= FF_LOSS_COLORSPACE;
+ break;
+ case FF_COLOR_YUV:
+ if (ps->color_type != FF_COLOR_YUV)
+ loss |= FF_LOSS_COLORSPACE;
+ break;
+ case FF_COLOR_YUV_JPEG:
+ if (ps->color_type != FF_COLOR_YUV_JPEG &&
+ ps->color_type != FF_COLOR_YUV &&
+ ps->color_type != FF_COLOR_GRAY)
+ loss |= FF_LOSS_COLORSPACE;
+ break;
+ default:
+ /* fail safe test */
+ if (ps->color_type != pf->color_type)
+ loss |= FF_LOSS_COLORSPACE;
+ break;
+ }
+ if (pf->color_type == FF_COLOR_GRAY &&
+ ps->color_type != FF_COLOR_GRAY)
+ loss |= FF_LOSS_CHROMA;
+ if (!pf->is_alpha && (ps->is_alpha && has_alpha))
+ loss |= FF_LOSS_ALPHA;
+ if (pf->pixel_type == FF_PIXEL_PALETTE &&
+ (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
+ loss |= FF_LOSS_COLORQUANT;
+ return loss;
+}
+
+static int avg_bits_per_pixel(int pix_fmt)
+{
+ int bits;
+ const PixFmtInfo *pf;
+
+ pf = &pix_fmt_info[pix_fmt];
+ switch(pf->pixel_type) {
+ case FF_PIXEL_PACKED:
+ switch(pix_fmt) {
+ case PIX_FMT_YUV422:
+ case PIX_FMT_RGB565:
+ case PIX_FMT_RGB555:
+ bits = 16;
+ break;
+ default:
+ bits = pf->depth * pf->nb_channels;
+ break;
+ }
+ break;
+ case FF_PIXEL_PLANAR:
+ if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
+ bits = pf->depth * pf->nb_channels;
+ } else {
+ bits = pf->depth + ((2 * pf->depth) >>
+ (pf->x_chroma_shift + pf->y_chroma_shift));
+ }
+ break;
+ case FF_PIXEL_PALETTE:
+ bits = 8;
+ break;
+ default:
+ bits = -1;
+ break;
+ }
+ return bits;
+}
+
+static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
+ int src_pix_fmt,
+ int has_alpha,
+ int loss_mask)
+{
+ int dist, i, loss, min_dist, dst_pix_fmt;
+
+ /* find exact color match with smallest size */
+ dst_pix_fmt = -1;
+ min_dist = 0x7fffffff;
+ for(i = 0;i < PIX_FMT_NB; i++) {
+ if (pix_fmt_mask & (1 << i)) {
+ loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
+ if (loss == 0) {
+ dist = avg_bits_per_pixel(i);
+ if (dist < min_dist) {
+ min_dist = dist;
+ dst_pix_fmt = i;
+ }
+ }
+ }
+ }
+ return dst_pix_fmt;
+}
+
+/**
+ * find best pixel format to convert to. Return -1 if none found
+ */
+int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
+ int has_alpha, int *loss_ptr)
+{
+ int dst_pix_fmt, loss_mask, i;
+ static const int loss_mask_order[] = {
+ ~0, /* no loss first */
+ ~FF_LOSS_ALPHA,
+ ~FF_LOSS_RESOLUTION,
+ ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
+ ~FF_LOSS_COLORQUANT,
+ ~FF_LOSS_DEPTH,
+ 0,
+ };
+
+ /* try with successive loss */
+ i = 0;
+ for(;;) {
+ loss_mask = loss_mask_order[i++];
+ dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
+ has_alpha, loss_mask);
+ if (dst_pix_fmt >= 0)
+ goto found;
+ if (loss_mask == 0)
+ break;
+ }
+ return -1;
+ found:
+ if (loss_ptr)
+ *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
+ return dst_pix_fmt;
+}
+
+static void img_copy_plane(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ for(;height > 0; height--) {
+ memcpy(dst, src, width);
+ dst += dst_wrap;
+ src += src_wrap;
+ }
+}
+
+/**
+ * Copy image 'src' to 'dst'.
+ */
+void img_copy(AVPicture *dst, AVPicture *src,
+ int pix_fmt, int width, int height)
+{
+ int bwidth, bits, i;
+ PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
+
+ pf = &pix_fmt_info[pix_fmt];
+ switch(pf->pixel_type) {
+ case FF_PIXEL_PACKED:
+ switch(pix_fmt) {
+ case PIX_FMT_YUV422:
+ case PIX_FMT_RGB565:
+ case PIX_FMT_RGB555:
+ bits = 16;
+ break;
+ default:
+ bits = pf->depth * pf->nb_channels;
+ break;
+ }
+ bwidth = (width * bits + 7) >> 3;
+ img_copy_plane(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ bwidth, height);
+ break;
+ case FF_PIXEL_PLANAR:
+ for(i = 0; i < pf->nb_channels; i++) {
+ int w, h;
+ w = width;
+ h = height;
+ if (i == 1 || i == 2) {
+ w >>= pf->x_chroma_shift;
+ h >>= pf->y_chroma_shift;
+ }
+ bwidth = (w * pf->depth + 7) >> 3;
+ img_copy_plane(dst->data[i], dst->linesize[i],
+ src->data[i], src->linesize[i],
+ bwidth, h);
+ }
+ break;
+ case FF_PIXEL_PALETTE:
+ img_copy_plane(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ width, height);
+ /* copy the palette */
+ img_copy_plane(dst->data[1], dst->linesize[1],
+ src->data[1], src->linesize[1],
+ 4, 256);
+ break;
+ }
+}
/* XXX: totally non optimized */
static void yuv422_to_yuv420p(AVPicture *dst, AVPicture *src,
int width, int height)
{
- uint8_t *lum, *cb, *cr;
- int x, y;
- const uint8_t *p;
+ const uint8_t *p, *p1;
+ uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
+ int x;
- lum = dst->data[0];
- cb = dst->data[1];
- cr = dst->data[2];
- p = src->data[0];
-
- for(y=0;y<height;y+=2) {
+ p1 = src->data[0];
+ lum1 = dst->data[0];
+ cb1 = dst->data[1];
+ cr1 = dst->data[2];
+
+ for(;height >= 2; height -= 2) {
+ p = p1;
+ lum = lum1;
+ cb = cb1;
+ cr = cr1;
for(x=0;x<width;x+=2) {
lum[0] = p[0];
cb[0] = p[1];
@@ -250,27 +615,279 @@ static void yuv422_to_yuv420p(AVPicture *dst, AVPicture *src,
cb++;
cr++;
}
+ p1 += src->linesize[0];
+ lum1 += dst->linesize[0];
+ p = p1;
+ lum = lum1;
for(x=0;x<width;x+=2) {
lum[0] = p[0];
lum[1] = p[2];
p += 4;
lum += 2;
}
+ p1 += src->linesize[0];
+ lum1 += dst->linesize[0];
+ cb1 += dst->linesize[1];
+ cr1 += dst->linesize[2];
+ }
+}
+
+static void yuv422_to_yuv422p(AVPicture *dst, AVPicture *src,
+ int width, int height)
+{
+ const uint8_t *p, *p1;
+ uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
+ int w;
+
+ p1 = src->data[0];
+ lum1 = dst->data[0];
+ cb1 = dst->data[1];
+ cr1 = dst->data[2];
+ for(;height > 0; height--) {
+ p = p1;
+ lum = lum1;
+ cb = cb1;
+ cr = cr1;
+ for(w = width; w >= 2; w -= 2) {
+ lum[0] = p[0];
+ cb[0] = p[1];
+ lum[1] = p[2];
+ cr[0] = p[3];
+ p += 4;
+ lum += 2;
+ cb++;
+ cr++;
+ }
+ p1 += src->linesize[0];
+ lum1 += dst->linesize[0];
+ cb1 += dst->linesize[1];
+ cr1 += dst->linesize[2];
}
}
-#define SCALEBITS 8
+static void yuv422p_to_yuv422(AVPicture *dst, AVPicture *src,
+ int width, int height)
+{
+ uint8_t *p, *p1;
+ const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
+ int w;
+
+ p1 = dst->data[0];
+ lum1 = src->data[0];
+ cb1 = src->data[1];
+ cr1 = src->data[2];
+ for(;height > 0; height--) {
+ p = p1;
+ lum = lum1;
+ cb = cb1;
+ cr = cr1;
+ for(w = width; w >= 2; w -= 2) {
+ p[0] = lum[0];
+ p[1] = cb[0];
+ p[2] = lum[1];
+ p[3] = cr[0];
+ p += 4;
+ lum += 2;
+ cb++;
+ cr++;
+ }
+ p1 += dst->linesize[0];
+ lum1 += src->linesize[0];
+ cb1 += src->linesize[1];
+ cr1 += src->linesize[2];
+ }
+}
+
+#define SCALEBITS 10
#define ONE_HALF (1 << (SCALEBITS - 1))
-#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
+#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
+
+#define YUV_TO_RGB1_CCIR(cb1, cr1)\
+{\
+ cb = (cb1) - 128;\
+ cr = (cr1) - 128;\
+ r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
+ g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
+ ONE_HALF;\
+ b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
+}
+
+#define YUV_TO_RGB2_CCIR(r, g, b, y1)\
+{\
+ y = ((y1) - 16) * FIX(255.0/219.0);\
+ r = cm[(y + r_add) >> SCALEBITS];\
+ g = cm[(y + g_add) >> SCALEBITS];\
+ b = cm[(y + b_add) >> SCALEBITS];\
+}
+
+#define YUV_TO_RGB1(cb1, cr1)\
+{\
+ cb = (cb1) - 128;\
+ cr = (cr1) - 128;\
+ r_add = FIX(1.40200) * cr + ONE_HALF;\
+ g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
+ b_add = FIX(1.77200) * cb + ONE_HALF;\
+}
+
+#define YUV_TO_RGB2(r, g, b, y1)\
+{\
+ y = (y1) << SCALEBITS;\
+ r = cm[(y + r_add) >> SCALEBITS];\
+ g = cm[(y + g_add) >> SCALEBITS];\
+ b = cm[(y + b_add) >> SCALEBITS];\
+}
+
+#define Y_CCIR_TO_JPEG(y)\
+ cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
+
+#define Y_JPEG_TO_CCIR(y)\
+ (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
+
+#define C_CCIR_TO_JPEG(y)\
+ cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
+
+/* NOTE: the clamp is really necessary! */
+static inline int C_JPEG_TO_CCIR(int y) {
+ y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
+ if (y < 16)
+ y = 16;
+ return y;
+}
+
+
+#define RGB_TO_Y(r, g, b) \
+((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
+ FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
+
+#define RGB_TO_U(r1, g1, b1, shift)\
+(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
+ FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_V(r1, g1, b1, shift)\
+(((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
+ FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_Y_CCIR(r, g, b) \
+((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
+ FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
+
+#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
+(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
+ FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
+(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
+ FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+static uint8_t y_ccir_to_jpeg[256];
+static uint8_t y_jpeg_to_ccir[256];
+static uint8_t c_ccir_to_jpeg[256];
+static uint8_t c_jpeg_to_ccir[256];
+
+/* init various conversion tables */
+static void img_convert_init(void)
+{
+ int i;
+ uint8_t *cm = cropTbl + MAX_NEG_CROP;
+
+ for(i = 0;i < 256; i++) {
+ y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
+ y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
+ c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
+ c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
+ }
+}
+
+/* apply to each pixel the given table */
+static void img_apply_table(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height, const uint8_t *table1)
+{
+ int n;
+ const uint8_t *s;
+ uint8_t *d;
+ const uint8_t *table;
+
+ table = table1;
+ for(;height > 0; height--) {
+ s = src;
+ d = dst;
+ n = width;
+ while (n >= 4) {
+ d[0] = table[s[0]];
+ d[1] = table[s[1]];
+ d[2] = table[s[2]];
+ d[3] = table[s[3]];
+ d += 4;
+ s += 4;
+ n -= 4;
+ }
+ while (n > 0) {
+ d[0] = table[s[0]];
+ d++;
+ s++;
+ n--;
+ }
+ dst += dst_wrap;
+ src += src_wrap;
+ }
+}
/* XXX: use generic filter ? */
+/* XXX: in most cases, the sampling position is incorrect */
+
+/* 4x1 -> 1x1 */
+static void shrink41(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ int w;
+ const uint8_t *s;
+ uint8_t *d;
+
+ for(;height > 0; height--) {
+ s = src;
+ d = dst;
+ for(w = width;w > 0; w--) {
+ d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
+ s += 4;
+ d++;
+ }
+ src += src_wrap;
+ dst += dst_wrap;
+ }
+}
+
+/* 2x1 -> 1x1 */
+static void shrink21(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ int w;
+ const uint8_t *s;
+ uint8_t *d;
+
+ for(;height > 0; height--) {
+ s = src;
+ d = dst;
+ for(w = width;w > 0; w--) {
+ d[0] = (s[0] + s[1]) >> 1;
+ s += 2;
+ d++;
+ }
+ src += src_wrap;
+ dst += dst_wrap;
+ }
+}
+
/* 1x2 -> 1x1 */
-static void shrink2(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
- int width, int height)
+static void shrink12(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
{
int w;
- uint8_t *s1, *s2, *d;
+ uint8_t *d;
+ const uint8_t *s1, *s2;
for(;height > 0; height--) {
s1 = src;
@@ -298,27 +915,28 @@ static void shrink2(uint8_t *dst, int dst_wrap,
/* 2x2 -> 1x1 */
static void shrink22(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
+ const uint8_t *src, int src_wrap,
int width, int height)
{
int w;
- uint8_t *s1, *s2, *d;
+ const uint8_t *s1, *s2;
+ uint8_t *d;
for(;height > 0; height--) {
s1 = src;
s2 = s1 + src_wrap;
d = dst;
for(w = width;w >= 4; w-=4) {
- d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1;
- d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 1;
- d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 1;
- d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 1;
+ d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
+ d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
+ d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
+ d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
s1 += 8;
s2 += 8;
d += 4;
}
for(;w > 0; w--) {
- d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1;
+ d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
s1 += 2;
s2 += 2;
d++;
@@ -328,41 +946,142 @@ static void shrink22(uint8_t *dst, int dst_wrap,
}
}
-/* 1x1 -> 2x2 */
-static void grow22(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
+/* 4x4 -> 1x1 */
+static void shrink44(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
int width, int height)
{
int w;
- uint8_t *s1, *d;
+ const uint8_t *s1, *s2, *s3, *s4;
+ uint8_t *d;
for(;height > 0; height--) {
s1 = src;
+ s2 = s1 + src_wrap;
+ s3 = s2 + src_wrap;
+ s4 = s3 + src_wrap;
d = dst;
- for(w = width;w >= 4; w-=4) {
- d[1] = d[0] = s1[0];
- d[3] = d[2] = s1[1];
- s1 += 2;
- d += 4;
- }
- for(;w > 0; w--) {
- d[0] = s1[0];
- s1 ++;
+ for(w = width;w > 0; w--) {
+ d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
+ s2[0] + s2[1] + s2[2] + s2[3] +
+ s3[0] + s3[1] + s3[2] + s3[3] +
+ s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
+ s1 += 4;
+ s2 += 4;
+ s3 += 4;
+ s4 += 4;
d++;
}
+ src += 4 * src_wrap;
+ dst += dst_wrap;
+ }
+}
+
+static void grow21_line(uint8_t *dst, const uint8_t *src,
+ int width)
+{
+ int w;
+ const uint8_t *s1;
+ uint8_t *d;
+
+ s1 = src;
+ d = dst;
+ for(w = width;w >= 4; w-=4) {
+ d[1] = d[0] = s1[0];
+ d[3] = d[2] = s1[1];
+ s1 += 2;
+ d += 4;
+ }
+ for(;w >= 2; w -= 2) {
+ d[1] = d[0] = s1[0];
+ s1 ++;
+ d += 2;
+ }
+ /* only needed if width is not a multiple of two */
+ /* XXX: veryfy that */
+ if (w) {
+ d[0] = s1[0];
+ }
+}
+
+static void grow41_line(uint8_t *dst, const uint8_t *src,
+ int width)
+{
+ int w, v;
+ const uint8_t *s1;
+ uint8_t *d;
+
+ s1 = src;
+ d = dst;
+ for(w = width;w >= 4; w-=4) {
+ v = s1[0];
+ d[0] = v;
+ d[1] = v;
+ d[2] = v;
+ d[3] = v;
+ s1 ++;
+ d += 4;
+ }
+}
+
+/* 1x1 -> 2x1 */
+static void grow21(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ for(;height > 0; height--) {
+ grow21_line(dst, src, width);
+ src += src_wrap;
+ dst += dst_wrap;
+ }
+}
+
+/* 1x1 -> 2x2 */
+static void grow22(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ for(;height > 0; height--) {
+ grow21_line(dst, src, width);
if (height%2)
src += src_wrap;
dst += dst_wrap;
}
}
+/* 1x1 -> 4x1 */
+static void grow41(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ for(;height > 0; height--) {
+ grow41_line(dst, src, width);
+ src += src_wrap;
+ dst += dst_wrap;
+ }
+}
+
+/* 1x1 -> 4x4 */
+static void grow44(uint8_t *dst, int dst_wrap,
+ const uint8_t *src, int src_wrap,
+ int width, int height)
+{
+ for(;height > 0; height--) {
+ grow41_line(dst, src, width);
+ if ((height & 3) == 1)
+ src += src_wrap;
+ dst += dst_wrap;
+ }
+}
+
/* 1x2 -> 2x1 */
static void conv411(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
+ const uint8_t *src, int src_wrap,
int width, int height)
{
int w, c;
- uint8_t *s1, *s2, *d;
+ const uint8_t *s1, *s2;
+ uint8_t *d;
width>>=1;
@@ -383,357 +1102,36 @@ static void conv411(uint8_t *dst, int dst_wrap,
}
}
-static void img_copy(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
- int width, int height)
+/* XXX: add jpeg quantize code */
+
+#define TRANSP_INDEX (6*6*6)
+
+/* this is maybe slow, but allows for extensions */
+static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
{
- for(;height > 0; height--) {
- memcpy(dst, src, width);
- dst += dst_wrap;
- src += src_wrap;
- }
+ return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
}
-#define SCALE_BITS 10
-
-#define C_Y (76309 >> (16 - SCALE_BITS))
-#define C_RV (117504 >> (16 - SCALE_BITS))
-#define C_BU (138453 >> (16 - SCALE_BITS))
-#define C_GU (13954 >> (16 - SCALE_BITS))
-#define C_GV (34903 >> (16 - SCALE_BITS))
+static void build_rgb_palette(uint8_t *palette, int has_alpha)
+{
+ uint32_t *pal;
+ static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
+ int i, r, g, b;
-#define YUV_TO_RGB2(r, g, b, y1)\
-{\
- y = (y1 - 16) * C_Y;\
- r = cm[(y + r_add) >> SCALE_BITS];\
- g = cm[(y + g_add) >> SCALE_BITS];\
- b = cm[(y + b_add) >> SCALE_BITS];\
-}
-
-/* XXX: no chroma interpolating is done */
-#define RGB_FUNCTIONS(rgb_name) \
- \
-static void yuv420p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- uint8_t *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2; \
- int w, y, cb, cr, r_add, g_add, b_add, width2; \
- uint8_t *cm = cropTbl + MAX_NEG_CROP; \
- unsigned int r, g, b; \
- \
- d = dst->data[0]; \
- y1_ptr = src->data[0]; \
- cb_ptr = src->data[1]; \
- cr_ptr = src->data[2]; \
- width2 = (width + 1) >> 1; \
- for(;height >= 2; height -= 2) { \
- d1 = d; \
- d2 = d + dst->linesize[0]; \
- y2_ptr = y1_ptr + src->linesize[0]; \
- for(w = width; w >= 2; w -= 2) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- /* output 4 pixels */ \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
- RGB_OUT(d1 + BPP, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y2_ptr[0]); \
- RGB_OUT(d2, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y2_ptr[1]); \
- RGB_OUT(d2 + BPP, r, g, b); \
- \
- d1 += 2 * BPP; \
- d2 += 2 * BPP; \
- \
- y1_ptr += 2; \
- y2_ptr += 2; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- /* handle odd width */ \
- if (w) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y2_ptr[0]); \
- RGB_OUT(d2, r, g, b); \
- d1 += BPP; \
- d2 += BPP; \
- y1_ptr++; \
- y2_ptr++; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- d += 2 * dst->linesize[0]; \
- y1_ptr += 2 * src->linesize[0] - width; \
- cb_ptr += src->linesize[1] - width2; \
- cr_ptr += src->linesize[2] - width2; \
- } \
- /* handle odd height */ \
- if (height) { \
- d1 = d; \
- for(w = width; w >= 2; w -= 2) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- /* output 2 pixels */ \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
- RGB_OUT(d1 + BPP, r, g, b); \
- \
- d1 += 2 * BPP; \
- \
- y1_ptr += 2; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- /* handle width */ \
- if (w) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- /* output 2 pixels */ \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- d1 += BPP; \
- \
- y1_ptr++; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- } \
-} \
- \
-/* XXX: no chroma interpolating is done */ \
-static void yuv422p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- uint8_t *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1; \
- int w, y, cb, cr, r_add, g_add, b_add, width2; \
- uint8_t *cm = cropTbl + MAX_NEG_CROP; \
- unsigned int r, g, b; \
- \
- d = dst->data[0]; \
- y1_ptr = src->data[0]; \
- cb_ptr = src->data[1]; \
- cr_ptr = src->data[2]; \
- width2 = (width + 1) >> 1; \
- for(;height > 0; height --) { \
- d1 = d; \
- for(w = width; w >= 2; w -= 2) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- /* output 2 pixels */ \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- \
- YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
- RGB_OUT(d1 + BPP, r, g, b); \
- \
- d1 += 2 * BPP; \
- \
- y1_ptr += 2; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- /* handle width */ \
- if (w) { \
- cb = cb_ptr[0] - 128; \
- cr = cr_ptr[0] - 128; \
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
- \
- /* output 2 pixels */ \
- YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
- RGB_OUT(d1, r, g, b); \
- d1 += BPP; \
- \
- y1_ptr++; \
- cb_ptr++; \
- cr_ptr++; \
- } \
- d += dst->linesize[0]; \
- y1_ptr += src->linesize[0] - width; \
- cb_ptr += src->linesize[1] - width2; \
- cr_ptr += src->linesize[2] - width2; \
- } \
-} \
- \
-static void rgb_name ## _to_yuv420p(AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- int wrap, wrap3, x, y; \
- int r, g, b, r1, g1, b1; \
- uint8_t *lum, *cb, *cr; \
- const uint8_t *p; \
- \
- lum = dst->data[0]; \
- cb = dst->data[1]; \
- cr = dst->data[2]; \
- \
- wrap = dst->linesize[0]; \
- wrap3 = src->linesize[0]; \
- p = src->data[0]; \
- for(y=0;y<height;y+=2) { \
- for(x=0;x<width;x+=2) { \
- RGB_IN(r, g, b, p); \
- r1 = r; \
- g1 = g; \
- b1 = b; \
- lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
- RGB_IN(r, g, b, p + BPP); \
- r1 += r; \
- g1 += g; \
- b1 += b; \
- lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + \
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
- p += wrap3; \
- lum += wrap; \
- \
- RGB_IN(r, g, b, p); \
- r1 += r; \
- g1 += g; \
- b1 += b; \
- lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
- \
- RGB_IN(r, g, b, p + BPP); \
- r1 += r; \
- g1 += g; \
- b1 += b; \
- lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g + \
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
- \
- cb[0] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> \
- (SCALEBITS + 2)) + 128; \
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> \
- (SCALEBITS + 2)) + 128; \
- \
- cb++; \
- cr++; \
- p += -wrap3 + 2 * BPP; \
- lum += -wrap + 2; \
- } \
- p += wrap3 + (wrap3 - width * BPP); \
- lum += wrap + (wrap - width); \
- cb += dst->linesize[1] - width / 2; \
- cr += dst->linesize[2] - width / 2; \
- } \
-} \
- \
-static void rgb_name ## _to_gray(AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- const unsigned char *p; \
- unsigned char *q; \
- int r, g, b, dst_wrap, src_wrap; \
- int x, y; \
- \
- p = src->data[0]; \
- src_wrap = src->linesize[0] - BPP * width; \
- \
- q = dst->data[0]; \
- dst_wrap = dst->linesize[0] - width; \
- \
- for(y=0;y<height;y++) { \
- for(x=0;x<width;x++) { \
- RGB_IN(r, g, b, p); \
- q[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
- q++; \
- p += BPP; \
- } \
- p += src_wrap; \
- q += dst_wrap; \
- } \
-} \
- \
-static void gray_to_ ## rgb_name(AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- const unsigned char *p; \
- unsigned char *q; \
- int r, dst_wrap, src_wrap; \
- int x, y; \
- \
- p = src->data[0]; \
- src_wrap = src->linesize[0] - width; \
- \
- q = dst->data[0]; \
- dst_wrap = dst->linesize[0] - BPP * width; \
- \
- for(y=0;y<height;y++) { \
- for(x=0;x<width;x++) { \
- r = p[0]; \
- RGB_OUT(q, r, r, r); \
- q += BPP; \
- p ++; \
- } \
- p += src_wrap; \
- q += dst_wrap; \
- } \
-} \
- \
-static void pal8_to_ ## rgb_name(AVPicture *dst, AVPicture *src, \
- int width, int height) \
-{ \
- const unsigned char *p; \
- unsigned char *q; \
- int r, g, b, dst_wrap, src_wrap; \
- int x, y; \
- uint32_t v;\
- const uint32_t *palette;\
-\
- p = src->data[0]; \
- src_wrap = src->linesize[0] - width; \
- palette = (uint32_t *)src->data[1];\
- \
- q = dst->data[0]; \
- dst_wrap = dst->linesize[0] - BPP * width; \
- \
- for(y=0;y<height;y++) { \
- for(x=0;x<width;x++) { \
- v = palette[p[0]];\
- r = (v >> 16) & 0xff;\
- g = (v >> 8) & 0xff;\
- b = (v) & 0xff;\
- RGB_OUT(q, r, g, b); \
- q += BPP; \
- p ++; \
- } \
- p += src_wrap; \
- q += dst_wrap; \
- } \
+ pal = (uint32_t *)palette;
+ i = 0;
+ for(r = 0; r < 6; r++) {
+ for(g = 0; g < 6; g++) {
+ for(b = 0; b < 6; b++) {
+ pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
+ (pal_value[g] << 8) | pal_value[b];
+ }
+ }
+ }
+ if (has_alpha)
+ pal[i++] = 0;
+ while (i < 256)
+ pal[i++] = 0xff000000;
}
/* copy bit n to bits 0 ... n - 1 */
@@ -746,6 +1144,8 @@ static inline unsigned int bitcopy_n(unsigned int a, int n)
/* rgb555 handling */
+#define RGB_NAME rgb555
+
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint16_t *)(s))[0];\
@@ -754,21 +1154,29 @@ static inline unsigned int bitcopy_n(unsigned int a, int n)
b = bitcopy_n(v << 3, 3);\
}
-#define RGB_OUT(d, r, g, b)\
+#define RGBA_IN(r, g, b, a, s)\
+{\
+ unsigned int v = ((const uint16_t *)(s))[0];\
+ r = bitcopy_n(v >> (10 - 3), 3);\
+ g = bitcopy_n(v >> (5 - 3), 3);\
+ b = bitcopy_n(v << 3, 3);\
+ a = (-(v >> 15)) & 0xff;\
+}
+
+#define RGBA_OUT(d, r, g, b, a)\
{\
- ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;\
+ ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | \
+ ((a << 8) & 0x8000);\
}
#define BPP 2
-RGB_FUNCTIONS(rgb555)
-
-#undef RGB_IN
-#undef RGB_OUT
-#undef BPP
+#include "imgconvert_template.h"
/* rgb565 handling */
+#define RGB_NAME rgb565
+
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint16_t *)(s))[0];\
@@ -784,14 +1192,12 @@ RGB_FUNCTIONS(rgb555)
#define BPP 2
-RGB_FUNCTIONS(rgb565)
-
-#undef RGB_IN
-#undef RGB_OUT
-#undef BPP
+#include "imgconvert_template.h"
/* bgr24 handling */
+#define RGB_NAME bgr24
+
#define RGB_IN(r, g, b, s)\
{\
b = (s)[0];\
@@ -808,7 +1214,7 @@ RGB_FUNCTIONS(rgb565)
#define BPP 3
-RGB_FUNCTIONS(bgr24)
+#include "imgconvert_template.h"
#undef RGB_IN
#undef RGB_OUT
@@ -816,6 +1222,9 @@ RGB_FUNCTIONS(bgr24)
/* rgb24 handling */
+#define RGB_NAME rgb24
+#define FMT_RGB24
+
#define RGB_IN(r, g, b, s)\
{\
r = (s)[0];\
@@ -832,14 +1241,13 @@ RGB_FUNCTIONS(bgr24)
#define BPP 3
-RGB_FUNCTIONS(rgb24)
-
-#undef RGB_IN
-#undef RGB_OUT
-#undef BPP
+#include "imgconvert_template.h"
/* rgba32 handling */
+#define RGB_NAME rgba32
+#define FMT_RGBA32
+
#define RGB_IN(r, g, b, s)\
{\
unsigned int v = ((const uint32_t *)(s))[0];\
@@ -848,80 +1256,23 @@ RGB_FUNCTIONS(rgb24)
b = v & 0xff;\
}
-#define RGB_OUT(d, r, g, b)\
+#define RGBA_IN(r, g, b, a, s)\
{\
- ((uint32_t *)(d))[0] = (0xff << 24) | (r << 16) | (g << 8) | b;\
+ unsigned int v = ((const uint32_t *)(s))[0];\
+ a = (v >> 24) & 0xff;\
+ r = (v >> 16) & 0xff;\
+ g = (v >> 8) & 0xff;\
+ b = v & 0xff;\
}
-#define BPP 4
-
-RGB_FUNCTIONS(rgba32)
-
-#undef RGB_IN
-#undef RGB_OUT
-#undef BPP
-
-
-static void rgb24_to_rgb565(AVPicture *dst, AVPicture *src,
- int width, int height)
-{
- const unsigned char *p;
- unsigned char *q;
- int r, g, b, dst_wrap, src_wrap;
- int x, y;
-
- p = src->data[0];
- src_wrap = src->linesize[0] - 3 * width;
-
- q = dst->data[0];
- dst_wrap = dst->linesize[0] - 2 * width;
-
- for(y=0;y<height;y++) {
- for(x=0;x<width;x++) {
- r = p[0];
- g = p[1];
- b = p[2];
-
- ((unsigned short *)q)[0] =
- ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
- q += 2;
- p += 3;
- }
- p += src_wrap;
- q += dst_wrap;
- }
+#define RGBA_OUT(d, r, g, b, a)\
+{\
+ ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
}
-/* NOTE: we also add a dummy alpha bit */
-static void rgb24_to_rgb555(AVPicture *dst, AVPicture *src,
- int width, int height)
-{
- const unsigned char *p;
- unsigned char *q;
- int r, g, b, dst_wrap, src_wrap;
- int x, y;
-
- p = src->data[0];
- src_wrap = src->linesize[0] - 3 * width;
-
- q = dst->data[0];
- dst_wrap = dst->linesize[0] - 2 * width;
+#define BPP 4
- for(y=0;y<height;y++) {
- for(x=0;x<width;x++) {
- r = p[0];
- g = p[1];
- b = p[2];
-
- ((unsigned short *)q)[0] =
- ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;
- q += 2;
- p += 3;
- }
- p += src_wrap;
- q += dst_wrap;
- }
-}
+#include "imgconvert_template.h"
static void mono_to_gray(AVPicture *dst, AVPicture *src,
int width, int height, int xor_mask)
@@ -989,7 +1340,6 @@ static void gray_to_mono(AVPicture *dst, AVPicture *src,
d = dst->data[0];
dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
- printf("%d %d\n", width, height);
for(y=0;y<height;y++) {
n = width;
@@ -1033,65 +1383,26 @@ static void gray_to_monoblack(AVPicture *dst, AVPicture *src,
gray_to_mono(dst, src, width, height, 0x00);
}
-/* this is maybe slow, but allows for extensions */
-static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
-{
- return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
-}
+typedef struct ConvertEntry {
+ void (*convert)(AVPicture *dst, AVPicture *src, int width, int height);
+} ConvertEntry;
-/* XXX: put jpeg quantize code instead */
-static void rgb24_to_pal8(AVPicture *dst, AVPicture *src,
- int width, int height)
-{
- const unsigned char *p;
- unsigned char *q;
- int r, g, b, dst_wrap, src_wrap;
- int x, y, i;
- static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
- uint32_t *pal;
+/* Add each new convertion function in this table. In order to be able
+ to convert from any format to any format, the following constraints
+ must be satisfied:
- p = src->data[0];
- src_wrap = src->linesize[0] - 3 * width;
+ - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
- q = dst->data[0];
- dst_wrap = dst->linesize[0] - width;
+ - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
- for(y=0;y<height;y++) {
- for(x=0;x<width;x++) {
- r = p[0];
- g = p[1];
- b = p[2];
+ - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGBA32
- q[0] = gif_clut_index(r, g, b);
- q++;
- p += 3;
- }
- p += src_wrap;
- q += dst_wrap;
- }
+ - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
+ PIX_FMT_RGB24.
- /* build palette */
- pal = (uint32_t *)dst->data[1];
- i = 0;
- for(r = 0; r < 6; r++) {
- for(g = 0; g < 6; g++) {
- for(b = 0; b < 6; b++) {
- pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
- (pal_value[g] << 8) | pal_value[b];
- }
- }
- }
- while (i < 256)
- pal[i++] = 0;
-}
-
-typedef struct ConvertEntry {
- void (*convert)(AVPicture *dst, AVPicture *src, int width, int height);
-} ConvertEntry;
+ - PIX_FMT_422 must convert to and from PIX_FMT_422P.
-/* add each new convertion function in this table */
-/* constraints;
- - all non YUV modes must convert at least to and from PIX_FMT_RGB24
+ The other conversion functions are just optimisations for common cases.
*/
static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
[PIX_FMT_YUV420P] = {
@@ -1111,27 +1422,45 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
.convert = yuv420p_to_rgba32
},
},
- [PIX_FMT_YUV422P] = {
+ [PIX_FMT_YUV422P] = {
+ [PIX_FMT_YUV422] = {
+ .convert = yuv422p_to_yuv422,
+ },
+ },
+ [PIX_FMT_YUV444P] = {
+ [PIX_FMT_RGB24] = {
+ .convert = yuv444p_to_rgb24
+ },
+ },
+ [PIX_FMT_YUVJ420P] = {
[PIX_FMT_RGB555] = {
- .convert = yuv422p_to_rgb555
+ .convert = yuvj420p_to_rgb555
},
[PIX_FMT_RGB565] = {
- .convert = yuv422p_to_rgb565
+ .convert = yuvj420p_to_rgb565
},
[PIX_FMT_BGR24] = {
- .convert = yuv422p_to_bgr24
+ .convert = yuvj420p_to_bgr24
},
[PIX_FMT_RGB24] = {
- .convert = yuv422p_to_rgb24
+ .convert = yuvj420p_to_rgb24
},
[PIX_FMT_RGBA32] = {
- .convert = yuv422p_to_rgba32
+ .convert = yuvj420p_to_rgba32
+ },
+ },
+ [PIX_FMT_YUVJ444P] = {
+ [PIX_FMT_RGB24] = {
+ .convert = yuvj444p_to_rgb24
},
},
[PIX_FMT_YUV422] = {
[PIX_FMT_YUV420P] = {
.convert = yuv422_to_yuv420p,
},
+ [PIX_FMT_YUV422P] = {
+ .convert = yuv422_to_yuv422p,
+ },
},
[PIX_FMT_RGB24] = {
@@ -1144,14 +1473,38 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
[PIX_FMT_RGB555] = {
.convert = rgb24_to_rgb555
},
+ [PIX_FMT_RGBA32] = {
+ .convert = rgb24_to_rgba32
+ },
+ [PIX_FMT_BGR24] = {
+ .convert = rgb24_to_bgr24
+ },
[PIX_FMT_GRAY8] = {
.convert = rgb24_to_gray
},
- [PIX_FMT_PAL8] = {
+ [PIX_FMT_PAL8] = {
.convert = rgb24_to_pal8
},
+ [PIX_FMT_YUV444P] = {
+ .convert = rgb24_to_yuv444p
+ },
+ [PIX_FMT_YUVJ420P] = {
+ .convert = rgb24_to_yuvj420p
+ },
+ [PIX_FMT_YUVJ444P] = {
+ .convert = rgb24_to_yuvj444p
+ },
},
[PIX_FMT_RGBA32] = {
+ [PIX_FMT_RGB24] = {
+ .convert = rgba32_to_rgb24
+ },
+ [PIX_FMT_RGB555] = {
+ .convert = rgba32_to_rgb555
+ },
+ [PIX_FMT_PAL8] = {
+ .convert = rgba32_to_pal8
+ },
[PIX_FMT_YUV420P] = {
.convert = rgba32_to_yuv420p
},
@@ -1160,6 +1513,9 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
},
},
[PIX_FMT_BGR24] = {
+ [PIX_FMT_RGB24] = {
+ .convert = bgr24_to_rgb24
+ },
[PIX_FMT_YUV420P] = {
.convert = bgr24_to_yuv420p
},
@@ -1168,6 +1524,12 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
},
},
[PIX_FMT_RGB555] = {
+ [PIX_FMT_RGB24] = {
+ .convert = rgb555_to_rgb24
+ },
+ [PIX_FMT_RGBA32] = {
+ .convert = rgb555_to_rgba32
+ },
[PIX_FMT_YUV420P] = {
.convert = rgb555_to_yuv420p
},
@@ -1176,6 +1538,9 @@ static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
},
},
[PIX_FMT_RGB565] = {
+ [PIX_FMT_RGB24] = {
+ .convert = rgb565_to_rgb24
+ },
[PIX_FMT_YUV420P] = {
.convert = rgb565_to_yuv420p
},
@@ -1242,8 +1607,6 @@ static int avpicture_alloc(AVPicture *picture,
void *ptr;
size = avpicture_get_size(pix_fmt, width, height);
- if (size < 0)
- goto fail;
ptr = av_malloc(size);
if (!ptr)
goto fail;
@@ -1259,11 +1622,20 @@ static void avpicture_free(AVPicture *picture)
av_free(picture->data[0]);
}
+/* return true if yuv planar */
+static inline int is_yuv_planar(PixFmtInfo *ps)
+{
+ return (ps->color_type == FF_COLOR_YUV ||
+ ps->color_type == FF_COLOR_YUV_JPEG) &&
+ ps->pixel_type == FF_PIXEL_PLANAR;
+}
+
/* XXX: always use linesize. Return -1 if not supported */
int img_convert(AVPicture *dst, int dst_pix_fmt,
AVPicture *src, int src_pix_fmt,
int src_width, int src_height)
{
+ static int inited;
int i, ret, dst_width, dst_height, int_pix_fmt;
PixFmtInfo *src_pix, *dst_pix;
ConvertEntry *ce;
@@ -1275,26 +1647,19 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
if (src_width <= 0 || src_height <= 0)
return 0;
+ if (!inited) {
+ inited = 1;
+ img_convert_init();
+ }
+
dst_width = src_width;
dst_height = src_height;
dst_pix = &pix_fmt_info[dst_pix_fmt];
src_pix = &pix_fmt_info[src_pix_fmt];
if (src_pix_fmt == dst_pix_fmt) {
- /* XXX: incorrect */
- /* same format: just copy */
- for(i = 0; i < dst_pix->nb_components; i++) {
- int w, h;
- w = dst_width;
- h = dst_height;
- if (dst_pix->is_yuv && (i == 1 || i == 2)) {
- w >>= dst_pix->x_chroma_shift;
- h >>= dst_pix->y_chroma_shift;
- }
- img_copy(dst->data[i], dst->linesize[i],
- src->data[i], src->linesize[i],
- w, h);
- }
+ /* no conversion needed: just copy */
+ img_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
return 0;
}
@@ -1306,13 +1671,21 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
}
/* gray to YUV */
- if (dst_pix->is_yuv && src_pix_fmt == PIX_FMT_GRAY8) {
+ if (is_yuv_planar(dst_pix) &&
+ src_pix_fmt == PIX_FMT_GRAY8) {
int w, h, y;
uint8_t *d;
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- dst_width, dst_height);
+ if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
+ img_copy_plane(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
+ } else {
+ img_apply_table(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height,
+ y_jpeg_to_ccir);
+ }
/* fill U and V with 128 */
w = dst_width;
h = dst_height;
@@ -1329,18 +1702,26 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
}
/* YUV to gray */
- if (src_pix->is_yuv && dst_pix_fmt == PIX_FMT_GRAY8) {
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- dst_width, dst_height);
+ if (is_yuv_planar(src_pix) &&
+ dst_pix_fmt == PIX_FMT_GRAY8) {
+ if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
+ img_copy_plane(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
+ } else {
+ img_apply_table(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height,
+ y_ccir_to_jpeg);
+ }
return 0;
}
- /* YUV to YUV */
- if (dst_pix->is_yuv && src_pix->is_yuv) {
- int x_shift, y_shift, w, h;
+ /* YUV to YUV planar */
+ if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
+ int x_shift, y_shift, w, h, xy_shift;
void (*resize_func)(uint8_t *dst, int dst_wrap,
- uint8_t *src, int src_wrap,
+ const uint8_t *src, int src_wrap,
int width, int height);
/* compute chroma size of the smallest dimensions */
@@ -1357,40 +1738,116 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
- if (x_shift == 0 && y_shift == 0) {
- resize_func = img_copy; /* should never happen */
- } else if (x_shift == 0 && y_shift == 1) {
- resize_func = shrink2;
- } else if (x_shift == 1 && y_shift == 1) {
+ xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
+ /* there must be filters for conversion at least from and to
+ YUV444 format */
+ switch(xy_shift) {
+ case 0x00:
+ resize_func = img_copy_plane;
+ break;
+ case 0x10:
+ resize_func = shrink21;
+ break;
+ case 0x20:
+ resize_func = shrink41;
+ break;
+ case 0x01:
+ resize_func = shrink12;
+ break;
+ case 0x11:
resize_func = shrink22;
- } else if (x_shift == -1 && y_shift == -1) {
+ break;
+ case 0x22:
+ resize_func = shrink44;
+ break;
+ case 0xf0:
+ resize_func = grow21;
+ break;
+ case 0xe0:
+ resize_func = grow41;
+ break;
+ case 0xff:
resize_func = grow22;
- } else if (x_shift == -1 && y_shift == 1) {
+ break;
+ case 0xee:
+ resize_func = grow44;
+ break;
+ case 0xf1:
resize_func = conv411;
- } else {
+ break;
+ default:
/* currently not handled */
- return -1;
+ goto no_chroma_filter;
}
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- dst_width, dst_height);
+ img_copy_plane(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
for(i = 1;i <= 2; i++)
resize_func(dst->data[i], dst->linesize[i],
src->data[i], src->linesize[i],
dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
- return 0;
+ /* if yuv color space conversion is needed, we do it here on
+ the destination image */
+ if (dst_pix->color_type != src_pix->color_type) {
+ const uint8_t *y_table, *c_table;
+ if (dst_pix->color_type == FF_COLOR_YUV) {
+ y_table = y_jpeg_to_ccir;
+ c_table = c_jpeg_to_ccir;
+ } else {
+ y_table = y_ccir_to_jpeg;
+ c_table = c_ccir_to_jpeg;
+ }
+ img_apply_table(dst->data[0], dst->linesize[0],
+ dst->data[0], dst->linesize[0],
+ dst_width, dst_height,
+ y_table);
+
+ for(i = 1;i <= 2; i++)
+ img_apply_table(dst->data[i], dst->linesize[i],
+ dst->data[i], dst->linesize[i],
+ dst_width>>dst_pix->x_chroma_shift,
+ dst_height>>dst_pix->y_chroma_shift,
+ c_table);
+ }
+ return 0;
}
+ no_chroma_filter:
/* try to use an intermediate format */
- if (src_pix_fmt == PIX_FMT_MONOWHITE ||
- src_pix_fmt == PIX_FMT_MONOBLACK ||
- dst_pix_fmt == PIX_FMT_MONOWHITE ||
- dst_pix_fmt == PIX_FMT_MONOBLACK) {
+ if (src_pix_fmt == PIX_FMT_YUV422 ||
+ dst_pix_fmt == PIX_FMT_YUV422) {
+ /* specific case: convert to YUV422P first */
+ int_pix_fmt = PIX_FMT_YUV422P;
+ } else if ((src_pix->color_type == FF_COLOR_GRAY &&
+ src_pix_fmt != PIX_FMT_GRAY8) ||
+ (dst_pix->color_type == FF_COLOR_GRAY &&
+ dst_pix_fmt != PIX_FMT_GRAY8)) {
+ /* gray8 is the normalized format */
int_pix_fmt = PIX_FMT_GRAY8;
+ } else if ((is_yuv_planar(src_pix) &&
+ src_pix_fmt != PIX_FMT_YUV444P &&
+ src_pix_fmt != PIX_FMT_YUVJ444P)) {
+ /* yuv444 is the normalized format */
+ if (src_pix->color_type == FF_COLOR_YUV_JPEG)
+ int_pix_fmt = PIX_FMT_YUVJ444P;
+ else
+ int_pix_fmt = PIX_FMT_YUV444P;
+ } else if ((is_yuv_planar(dst_pix) &&
+ dst_pix_fmt != PIX_FMT_YUV444P &&
+ dst_pix_fmt != PIX_FMT_YUVJ444P)) {
+ /* yuv444 is the normalized format */
+ if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
+ int_pix_fmt = PIX_FMT_YUVJ444P;
+ else
+ int_pix_fmt = PIX_FMT_YUV444P;
} else {
- int_pix_fmt = PIX_FMT_RGB24;
+ /* the two formats are rgb or gray8 or yuv[j]444p */
+ if (src_pix->is_alpha && dst_pix->is_alpha)
+ int_pix_fmt = PIX_FMT_RGBA32;
+ else
+ int_pix_fmt = PIX_FMT_RGB24;
}
if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
return -1;
@@ -1407,6 +1864,62 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
return ret;
}
+/* NOTE: we scan all the pixels to have an exact information */
+static int get_alpha_info_pal8(AVPicture *src, int width, int height)
+{
+ const unsigned char *p;
+ int src_wrap, ret, x, y;
+ unsigned int a;
+ uint32_t *palette = (uint32_t *)src->data[1];
+
+ p = src->data[0];
+ src_wrap = src->linesize[0] - width;
+ ret = 0;
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ a = palette[p[0]] >> 24;
+ if (a == 0x00) {
+ ret |= FF_ALPHA_TRANSP;
+ } else if (a != 0xff) {
+ ret |= FF_ALPHA_SEMI_TRANSP;
+ }
+ p++;
+ }
+ p += src_wrap;
+ }
+ return ret;
+}
+
+/**
+ * Tell if an image really has transparent alpha values.
+ * @return ored mask of FF_ALPHA_xxx constants
+ */
+int img_get_alpha_info(AVPicture *src, int pix_fmt, int width, int height)
+{
+ PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
+ int ret;
+
+ pf = &pix_fmt_info[pix_fmt];
+ /* no alpha can be represented in format */
+ if (!pf->is_alpha)
+ return 0;
+ switch(pix_fmt) {
+ case PIX_FMT_RGBA32:
+ ret = get_alpha_info_rgba32(src, width, height);
+ break;
+ case PIX_FMT_RGB555:
+ ret = get_alpha_info_rgb555(src, width, height);
+ break;
+ case PIX_FMT_PAL8:
+ ret = get_alpha_info_pal8(src, width, height);
+ break;
+ default:
+ /* we do not know, so everything is indicated */
+ ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
+ break;
+ }
+ return ret;
+}
#ifdef HAVE_MMX
#define DEINT_INPLACE_LINE_LUM \
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-24 22:36:56 +0000