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      1 /*
      2  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "libyuv/convert_argb.h"
     12 
     13 #include <string.h>  // for memset()
     14 
     15 #include "libyuv/cpu_id.h"
     16 #include "libyuv/format_conversion.h"
     17 #ifdef HAVE_JPEG
     18 #include "libyuv/mjpeg_decoder.h"
     19 #endif
     20 #include "libyuv/rotate_argb.h"
     21 #include "libyuv/video_common.h"
     22 #include "libyuv/row.h"
     23 
     24 #ifdef __cplusplus
     25 namespace libyuv {
     26 extern "C" {
     27 #endif
     28 
     29 // Copy ARGB with optional flipping
     30 LIBYUV_API
     31 int ARGBCopy(const uint8* src_argb, int src_stride_argb,
     32              uint8* dst_argb, int dst_stride_argb,
     33              int width, int height) {
     34   if (!src_argb || !dst_argb ||
     35       width <= 0 || height == 0) {
     36     return -1;
     37   }
     38   // Negative height means invert the image.
     39   if (height < 0) {
     40     height = -height;
     41     src_argb = src_argb + (height - 1) * src_stride_argb;
     42     src_stride_argb = -src_stride_argb;
     43   }
     44 
     45   CopyPlane(src_argb, src_stride_argb, dst_argb, dst_stride_argb,
     46             width * 4, height);
     47   return 0;
     48 }
     49 
     50 // Convert I444 to ARGB.
     51 LIBYUV_API
     52 int I444ToARGB(const uint8* src_y, int src_stride_y,
     53                const uint8* src_u, int src_stride_u,
     54                const uint8* src_v, int src_stride_v,
     55                uint8* dst_argb, int dst_stride_argb,
     56                int width, int height) {
     57   if (!src_y || !src_u || !src_v ||
     58       !dst_argb ||
     59       width <= 0 || height == 0) {
     60     return -1;
     61   }
     62   // Negative height means invert the image.
     63   if (height < 0) {
     64     height = -height;
     65     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
     66     dst_stride_argb = -dst_stride_argb;
     67   }
     68   void (*I444ToARGBRow)(const uint8* y_buf,
     69                         const uint8* u_buf,
     70                         const uint8* v_buf,
     71                         uint8* rgb_buf,
     72                         int width) = I444ToARGBRow_C;
     73 #if defined(HAS_I444TOARGBROW_SSSE3)
     74   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     75     I444ToARGBRow = I444ToARGBRow_Any_SSSE3;
     76     if (IS_ALIGNED(width, 8)) {
     77       I444ToARGBRow = I444ToARGBRow_Unaligned_SSSE3;
     78       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     79         I444ToARGBRow = I444ToARGBRow_SSSE3;
     80       }
     81     }
     82   }
     83 #endif
     84 
     85   for (int y = 0; y < height; ++y) {
     86     I444ToARGBRow(src_y, src_u, src_v, dst_argb, width);
     87     dst_argb += dst_stride_argb;
     88     src_y += src_stride_y;
     89     src_u += src_stride_u;
     90     src_v += src_stride_v;
     91   }
     92   return 0;
     93 }
     94 
     95 // Convert I422 to ARGB.
     96 LIBYUV_API
     97 int I422ToARGB(const uint8* src_y, int src_stride_y,
     98                const uint8* src_u, int src_stride_u,
     99                const uint8* src_v, int src_stride_v,
    100                uint8* dst_argb, int dst_stride_argb,
    101                int width, int height) {
    102   if (!src_y || !src_u || !src_v ||
    103       !dst_argb ||
    104       width <= 0 || height == 0) {
    105     return -1;
    106   }
    107   // Negative height means invert the image.
    108   if (height < 0) {
    109     height = -height;
    110     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    111     dst_stride_argb = -dst_stride_argb;
    112   }
    113   void (*I422ToARGBRow)(const uint8* y_buf,
    114                         const uint8* u_buf,
    115                         const uint8* v_buf,
    116                         uint8* rgb_buf,
    117                         int width) = I422ToARGBRow_C;
    118 #if defined(HAS_I422TOARGBROW_NEON)
    119   if (TestCpuFlag(kCpuHasNEON)) {
    120     I422ToARGBRow = I422ToARGBRow_Any_NEON;
    121     if (IS_ALIGNED(width, 16)) {
    122       I422ToARGBRow = I422ToARGBRow_NEON;
    123     }
    124   }
    125 #elif defined(HAS_I422TOARGBROW_SSSE3)
    126   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    127     I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
    128     if (IS_ALIGNED(width, 8)) {
    129       I422ToARGBRow = I422ToARGBRow_Unaligned_SSSE3;
    130       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    131         I422ToARGBRow = I422ToARGBRow_SSSE3;
    132       }
    133     }
    134   }
    135 #endif
    136 
    137   for (int y = 0; y < height; ++y) {
    138     I422ToARGBRow(src_y, src_u, src_v, dst_argb, width);
    139     dst_argb += dst_stride_argb;
    140     src_y += src_stride_y;
    141     src_u += src_stride_u;
    142     src_v += src_stride_v;
    143   }
    144   return 0;
    145 }
    146 
    147 // Convert I411 to ARGB.
    148 LIBYUV_API
    149 int I411ToARGB(const uint8* src_y, int src_stride_y,
    150                const uint8* src_u, int src_stride_u,
    151                const uint8* src_v, int src_stride_v,
    152                uint8* dst_argb, int dst_stride_argb,
    153                int width, int height) {
    154   if (!src_y || !src_u || !src_v ||
    155       !dst_argb ||
    156       width <= 0 || height == 0) {
    157     return -1;
    158   }
    159   // Negative height means invert the image.
    160   if (height < 0) {
    161     height = -height;
    162     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    163     dst_stride_argb = -dst_stride_argb;
    164   }
    165   void (*I411ToARGBRow)(const uint8* y_buf,
    166                         const uint8* u_buf,
    167                         const uint8* v_buf,
    168                         uint8* rgb_buf,
    169                         int width) = I411ToARGBRow_C;
    170 #if defined(HAS_I411TOARGBROW_SSSE3)
    171   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    172     I411ToARGBRow = I411ToARGBRow_Any_SSSE3;
    173     if (IS_ALIGNED(width, 8)) {
    174       I411ToARGBRow = I411ToARGBRow_Unaligned_SSSE3;
    175       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    176         I411ToARGBRow = I411ToARGBRow_SSSE3;
    177       }
    178     }
    179   }
    180 #endif
    181 
    182   for (int y = 0; y < height; ++y) {
    183     I411ToARGBRow(src_y, src_u, src_v, dst_argb, width);
    184     dst_argb += dst_stride_argb;
    185     src_y += src_stride_y;
    186     src_u += src_stride_u;
    187     src_v += src_stride_v;
    188   }
    189   return 0;
    190 }
    191 
    192 
    193 // Convert I400 to ARGB.
    194 LIBYUV_API
    195 int I400ToARGB_Reference(const uint8* src_y, int src_stride_y,
    196                          uint8* dst_argb, int dst_stride_argb,
    197                          int width, int height) {
    198   if (!src_y || !dst_argb ||
    199       width <= 0 || height == 0) {
    200     return -1;
    201   }
    202   // Negative height means invert the image.
    203   if (height < 0) {
    204     height = -height;
    205     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    206     dst_stride_argb = -dst_stride_argb;
    207   }
    208   void (*YToARGBRow)(const uint8* y_buf,
    209                      uint8* rgb_buf,
    210                      int width) = YToARGBRow_C;
    211 #if defined(HAS_YTOARGBROW_SSE2)
    212   if (TestCpuFlag(kCpuHasSSE2) &&
    213       IS_ALIGNED(width, 8) &&
    214       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    215     YToARGBRow = YToARGBRow_SSE2;
    216   }
    217 #endif
    218 
    219   for (int y = 0; y < height; ++y) {
    220     YToARGBRow(src_y, dst_argb, width);
    221     dst_argb += dst_stride_argb;
    222     src_y += src_stride_y;
    223   }
    224   return 0;
    225 }
    226 
    227 // Convert I400 to ARGB.
    228 LIBYUV_API
    229 int I400ToARGB(const uint8* src_y, int src_stride_y,
    230                uint8* dst_argb, int dst_stride_argb,
    231                int width, int height) {
    232   if (!src_y || !dst_argb ||
    233       width <= 0 || height == 0) {
    234     return -1;
    235   }
    236   // Negative height means invert the image.
    237   if (height < 0) {
    238     height = -height;
    239     src_y = src_y + (height - 1) * src_stride_y;
    240     src_stride_y = -src_stride_y;
    241   }
    242   void (*I400ToARGBRow)(const uint8* src_y, uint8* dst_argb, int pix) =
    243       I400ToARGBRow_C;
    244 #if defined(HAS_I400TOARGBROW_SSE2)
    245   if (TestCpuFlag(kCpuHasSSE2) &&
    246       IS_ALIGNED(width, 8) &&
    247       IS_ALIGNED(src_y, 8) && IS_ALIGNED(src_stride_y, 8) &&
    248       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    249     I400ToARGBRow = I400ToARGBRow_SSE2;
    250   }
    251 #endif
    252 
    253   for (int y = 0; y < height; ++y) {
    254     I400ToARGBRow(src_y, dst_argb, width);
    255     src_y += src_stride_y;
    256     dst_argb += dst_stride_argb;
    257   }
    258   return 0;
    259 }
    260 
    261 // Convert BGRA to ARGB.
    262 LIBYUV_API
    263 int BGRAToARGB(const uint8* src_bgra, int src_stride_bgra,
    264                uint8* dst_argb, int dst_stride_argb,
    265                int width, int height) {
    266   if (!src_bgra || !dst_argb ||
    267       width <= 0 || height == 0) {
    268     return -1;
    269   }
    270   // Negative height means invert the image.
    271   if (height < 0) {
    272     height = -height;
    273     src_bgra = src_bgra + (height - 1) * src_stride_bgra;
    274     src_stride_bgra = -src_stride_bgra;
    275   }
    276   void (*BGRAToARGBRow)(const uint8* src_bgra, uint8* dst_argb, int pix) =
    277       BGRAToARGBRow_C;
    278 #if defined(HAS_BGRATOARGBROW_SSSE3)
    279   if (TestCpuFlag(kCpuHasSSSE3) &&
    280       IS_ALIGNED(width, 4) &&
    281       IS_ALIGNED(src_bgra, 16) && IS_ALIGNED(src_stride_bgra, 16) &&
    282       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    283     BGRAToARGBRow = BGRAToARGBRow_SSSE3;
    284   }
    285 #endif
    286 
    287   for (int y = 0; y < height; ++y) {
    288     BGRAToARGBRow(src_bgra, dst_argb, width);
    289     src_bgra += src_stride_bgra;
    290     dst_argb += dst_stride_argb;
    291   }
    292   return 0;
    293 }
    294 
    295 // Convert ABGR to ARGB.
    296 LIBYUV_API
    297 int ABGRToARGB(const uint8* src_abgr, int src_stride_abgr,
    298                uint8* dst_argb, int dst_stride_argb,
    299                int width, int height) {
    300   if (!src_abgr || !dst_argb ||
    301       width <= 0 || height == 0) {
    302     return -1;
    303   }
    304   // Negative height means invert the image.
    305   if (height < 0) {
    306     height = -height;
    307     src_abgr = src_abgr + (height - 1) * src_stride_abgr;
    308     src_stride_abgr = -src_stride_abgr;
    309   }
    310   void (*ABGRToARGBRow)(const uint8* src_abgr, uint8* dst_argb, int pix) =
    311       ABGRToARGBRow_C;
    312 #if defined(HAS_ABGRTOARGBROW_SSSE3)
    313   if (TestCpuFlag(kCpuHasSSSE3) &&
    314       IS_ALIGNED(width, 4) &&
    315       IS_ALIGNED(src_abgr, 16) && IS_ALIGNED(src_stride_abgr, 16) &&
    316       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    317     ABGRToARGBRow = ABGRToARGBRow_SSSE3;
    318   }
    319 #endif
    320 
    321   for (int y = 0; y < height; ++y) {
    322     ABGRToARGBRow(src_abgr, dst_argb, width);
    323     src_abgr += src_stride_abgr;
    324     dst_argb += dst_stride_argb;
    325   }
    326   return 0;
    327 }
    328 
    329 // Convert RGBA to ARGB.
    330 LIBYUV_API
    331 int RGBAToARGB(const uint8* src_rgba, int src_stride_rgba,
    332                uint8* dst_argb, int dst_stride_argb,
    333                int width, int height) {
    334   if (!src_rgba || !dst_argb ||
    335       width <= 0 || height == 0) {
    336     return -1;
    337   }
    338   // Negative height means invert the image.
    339   if (height < 0) {
    340     height = -height;
    341     src_rgba = src_rgba + (height - 1) * src_stride_rgba;
    342     src_stride_rgba = -src_stride_rgba;
    343   }
    344   void (*RGBAToARGBRow)(const uint8* src_rgba, uint8* dst_argb, int pix) =
    345       RGBAToARGBRow_C;
    346 #if defined(HAS_RGBATOARGBROW_SSSE3)
    347   if (TestCpuFlag(kCpuHasSSSE3) &&
    348       IS_ALIGNED(width, 4) &&
    349       IS_ALIGNED(src_rgba, 16) && IS_ALIGNED(src_stride_rgba, 16) &&
    350       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    351     RGBAToARGBRow = RGBAToARGBRow_SSSE3;
    352   }
    353 #endif
    354 
    355   for (int y = 0; y < height; ++y) {
    356     RGBAToARGBRow(src_rgba, dst_argb, width);
    357     src_rgba += src_stride_rgba;
    358     dst_argb += dst_stride_argb;
    359   }
    360   return 0;
    361 }
    362 
    363 // Convert RAW to ARGB.
    364 LIBYUV_API
    365 int RAWToARGB(const uint8* src_raw, int src_stride_raw,
    366               uint8* dst_argb, int dst_stride_argb,
    367               int width, int height) {
    368   if (!src_raw || !dst_argb ||
    369       width <= 0 || height == 0) {
    370     return -1;
    371   }
    372   // Negative height means invert the image.
    373   if (height < 0) {
    374     height = -height;
    375     src_raw = src_raw + (height - 1) * src_stride_raw;
    376     src_stride_raw = -src_stride_raw;
    377   }
    378   void (*RAWToARGBRow)(const uint8* src_raw, uint8* dst_argb, int pix) =
    379       RAWToARGBRow_C;
    380 #if defined(HAS_RAWTOARGBROW_SSSE3)
    381   if (TestCpuFlag(kCpuHasSSSE3) &&
    382       IS_ALIGNED(width, 16) &&
    383       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    384     RAWToARGBRow = RAWToARGBRow_SSSE3;
    385   }
    386 #endif
    387 
    388   for (int y = 0; y < height; ++y) {
    389     RAWToARGBRow(src_raw, dst_argb, width);
    390     src_raw += src_stride_raw;
    391     dst_argb += dst_stride_argb;
    392   }
    393   return 0;
    394 }
    395 
    396 // Convert RGB24 to ARGB.
    397 LIBYUV_API
    398 int RGB24ToARGB(const uint8* src_rgb24, int src_stride_rgb24,
    399                 uint8* dst_argb, int dst_stride_argb,
    400                 int width, int height) {
    401   if (!src_rgb24 || !dst_argb ||
    402       width <= 0 || height == 0) {
    403     return -1;
    404   }
    405   // Negative height means invert the image.
    406   if (height < 0) {
    407     height = -height;
    408     src_rgb24 = src_rgb24 + (height - 1) * src_stride_rgb24;
    409     src_stride_rgb24 = -src_stride_rgb24;
    410   }
    411   void (*RGB24ToARGBRow)(const uint8* src_rgb24, uint8* dst_argb, int pix) =
    412       RGB24ToARGBRow_C;
    413 #if defined(HAS_RGB24TOARGBROW_SSSE3)
    414   if (TestCpuFlag(kCpuHasSSSE3) &&
    415       IS_ALIGNED(width, 16) &&
    416       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    417     RGB24ToARGBRow = RGB24ToARGBRow_SSSE3;
    418   }
    419 #endif
    420 
    421   for (int y = 0; y < height; ++y) {
    422     RGB24ToARGBRow(src_rgb24, dst_argb, width);
    423     src_rgb24 += src_stride_rgb24;
    424     dst_argb += dst_stride_argb;
    425   }
    426   return 0;
    427 }
    428 
    429 // Convert RGB565 to ARGB.
    430 LIBYUV_API
    431 int RGB565ToARGB(const uint8* src_rgb565, int src_stride_rgb565,
    432                  uint8* dst_argb, int dst_stride_argb,
    433                  int width, int height) {
    434   if (!src_rgb565 || !dst_argb ||
    435       width <= 0 || height == 0) {
    436     return -1;
    437   }
    438   // Negative height means invert the image.
    439   if (height < 0) {
    440     height = -height;
    441     src_rgb565 = src_rgb565 + (height - 1) * src_stride_rgb565;
    442     src_stride_rgb565 = -src_stride_rgb565;
    443   }
    444   void (*RGB565ToARGBRow)(const uint8* src_rgb565, uint8* dst_argb, int pix) =
    445       RGB565ToARGBRow_C;
    446 #if defined(HAS_RGB565TOARGBROW_SSE2)
    447   if (TestCpuFlag(kCpuHasSSE2) &&
    448       IS_ALIGNED(width, 8) &&
    449       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    450     RGB565ToARGBRow = RGB565ToARGBRow_SSE2;
    451   }
    452 #endif
    453 
    454   for (int y = 0; y < height; ++y) {
    455     RGB565ToARGBRow(src_rgb565, dst_argb, width);
    456     src_rgb565 += src_stride_rgb565;
    457     dst_argb += dst_stride_argb;
    458   }
    459   return 0;
    460 }
    461 
    462 // Convert ARGB1555 to ARGB.
    463 LIBYUV_API
    464 int ARGB1555ToARGB(const uint8* src_argb1555, int src_stride_argb1555,
    465                    uint8* dst_argb, int dst_stride_argb,
    466                    int width, int height) {
    467   if (!src_argb1555 || !dst_argb ||
    468        width <= 0 || height == 0) {
    469     return -1;
    470   }
    471   // Negative height means invert the image.
    472   if (height < 0) {
    473     height = -height;
    474     src_argb1555 = src_argb1555 + (height - 1) * src_stride_argb1555;
    475     src_stride_argb1555 = -src_stride_argb1555;
    476   }
    477   void (*ARGB1555ToARGBRow)(const uint8* src_argb1555, uint8* dst_argb,
    478                             int pix) = ARGB1555ToARGBRow_C;
    479 #if defined(HAS_ARGB1555TOARGBROW_SSE2)
    480   if (TestCpuFlag(kCpuHasSSE2) &&
    481       IS_ALIGNED(width, 8) &&
    482       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    483     ARGB1555ToARGBRow = ARGB1555ToARGBRow_SSE2;
    484   }
    485 #endif
    486 
    487   for (int y = 0; y < height; ++y) {
    488     ARGB1555ToARGBRow(src_argb1555, dst_argb, width);
    489     src_argb1555 += src_stride_argb1555;
    490     dst_argb += dst_stride_argb;
    491   }
    492   return 0;
    493 }
    494 
    495 // Convert ARGB4444 to ARGB.
    496 LIBYUV_API
    497 int ARGB4444ToARGB(const uint8* src_argb4444, int src_stride_argb4444,
    498                    uint8* dst_argb, int dst_stride_argb,
    499                    int width, int height) {
    500   if (!src_argb4444 || !dst_argb ||
    501       width <= 0 || height == 0) {
    502     return -1;
    503   }
    504   // Negative height means invert the image.
    505   if (height < 0) {
    506     height = -height;
    507     src_argb4444 = src_argb4444 + (height - 1) * src_stride_argb4444;
    508     src_stride_argb4444 = -src_stride_argb4444;
    509   }
    510   void (*ARGB4444ToARGBRow)(const uint8* src_argb4444, uint8* dst_argb,
    511                             int pix) = ARGB4444ToARGBRow_C;
    512 #if defined(HAS_ARGB4444TOARGBROW_SSE2)
    513   if (TestCpuFlag(kCpuHasSSE2) &&
    514       IS_ALIGNED(width, 8) &&
    515       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    516     ARGB4444ToARGBRow = ARGB4444ToARGBRow_SSE2;
    517   }
    518 #endif
    519 
    520   for (int y = 0; y < height; ++y) {
    521     ARGB4444ToARGBRow(src_argb4444, dst_argb, width);
    522     src_argb4444 += src_stride_argb4444;
    523     dst_argb += dst_stride_argb;
    524   }
    525   return 0;
    526 }
    527 
    528 // Convert NV12 to ARGB.
    529 LIBYUV_API
    530 int NV12ToARGB(const uint8* src_y, int src_stride_y,
    531                const uint8* src_uv, int src_stride_uv,
    532                uint8* dst_argb, int dst_stride_argb,
    533                int width, int height) {
    534   if (!src_y || !src_uv || !dst_argb ||
    535       width <= 0 || height == 0) {
    536     return -1;
    537   }
    538   // Negative height means invert the image.
    539   if (height < 0) {
    540     height = -height;
    541     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    542     dst_stride_argb = -dst_stride_argb;
    543   }
    544   void (*NV12ToARGBRow)(const uint8* y_buf,
    545                         const uint8* uv_buf,
    546                         uint8* rgb_buf,
    547                         int width) = NV12ToARGBRow_C;
    548 #if defined(HAS_NV12TOARGBROW_SSSE3)
    549   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    550     NV12ToARGBRow = NV12ToARGBRow_Any_SSSE3;
    551     if (IS_ALIGNED(width, 8)) {
    552       NV12ToARGBRow = NV12ToARGBRow_Unaligned_SSSE3;
    553       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    554         NV12ToARGBRow = NV12ToARGBRow_SSSE3;
    555       }
    556     }
    557   }
    558 #endif
    559 #if defined(HAS_NV12TOARGBROW_NEON)
    560   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
    561     NV12ToARGBRow = NV12ToARGBRow_Any_NEON;
    562     if (IS_ALIGNED(width, 8)) {
    563       NV12ToARGBRow = NV12ToARGBRow_NEON;
    564     }
    565   }
    566 #endif
    567 
    568   for (int y = 0; y < height; ++y) {
    569     NV12ToARGBRow(src_y, src_uv, dst_argb, width);
    570     dst_argb += dst_stride_argb;
    571     src_y += src_stride_y;
    572     if (y & 1) {
    573       src_uv += src_stride_uv;
    574     }
    575   }
    576   return 0;
    577 }
    578 
    579 // Convert NV21 to ARGB.
    580 LIBYUV_API
    581 int NV21ToARGB(const uint8* src_y, int src_stride_y,
    582                const uint8* src_uv, int src_stride_uv,
    583                uint8* dst_argb, int dst_stride_argb,
    584                int width, int height) {
    585   if (!src_y || !src_uv || !dst_argb ||
    586       width <= 0 || height == 0) {
    587     return -1;
    588   }
    589   // Negative height means invert the image.
    590   if (height < 0) {
    591     height = -height;
    592     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    593     dst_stride_argb = -dst_stride_argb;
    594   }
    595   void (*NV21ToARGBRow)(const uint8* y_buf,
    596                         const uint8* uv_buf,
    597                         uint8* rgb_buf,
    598                         int width) = NV21ToARGBRow_C;
    599 #if defined(HAS_NV21TOARGBROW_SSSE3)
    600   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    601     NV21ToARGBRow = NV21ToARGBRow_Any_SSSE3;
    602     if (IS_ALIGNED(width, 8)) {
    603       NV21ToARGBRow = NV21ToARGBRow_Unaligned_SSSE3;
    604       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    605         NV21ToARGBRow = NV21ToARGBRow_SSSE3;
    606       }
    607     }
    608   }
    609 #endif
    610 #if defined(HAS_NV21TOARGBROW_NEON)
    611   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
    612     NV21ToARGBRow = NV21ToARGBRow_Any_NEON;
    613     if (IS_ALIGNED(width, 8)) {
    614       NV21ToARGBRow = NV21ToARGBRow_NEON;
    615     }
    616   }
    617 #endif
    618 
    619   for (int y = 0; y < height; ++y) {
    620     NV21ToARGBRow(src_y, src_uv, dst_argb, width);
    621     dst_argb += dst_stride_argb;
    622     src_y += src_stride_y;
    623     if (y & 1) {
    624       src_uv += src_stride_uv;
    625     }
    626   }
    627   return 0;
    628 }
    629 
    630 // Convert M420 to ARGB.
    631 LIBYUV_API
    632 int M420ToARGB(const uint8* src_m420, int src_stride_m420,
    633                uint8* dst_argb, int dst_stride_argb,
    634                int width, int height) {
    635   if (!src_m420 || !dst_argb ||
    636       width <= 0 || height == 0) {
    637     return -1;
    638   }
    639   // Negative height means invert the image.
    640   if (height < 0) {
    641     height = -height;
    642     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
    643     dst_stride_argb = -dst_stride_argb;
    644   }
    645   void (*NV12ToARGBRow)(const uint8* y_buf,
    646                         const uint8* uv_buf,
    647                         uint8* rgb_buf,
    648                         int width) = NV12ToARGBRow_C;
    649 #if defined(HAS_NV12TOARGBROW_SSSE3)
    650   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    651     NV12ToARGBRow = NV12ToARGBRow_Any_SSSE3;
    652     if (IS_ALIGNED(width, 8)) {
    653       NV12ToARGBRow = NV12ToARGBRow_Unaligned_SSSE3;
    654       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    655         NV12ToARGBRow = NV12ToARGBRow_SSSE3;
    656       }
    657     }
    658   }
    659 #endif
    660 
    661   for (int y = 0; y < height - 1; y += 2) {
    662     NV12ToARGBRow(src_m420, src_m420 + src_stride_m420 * 2, dst_argb, width);
    663     NV12ToARGBRow(src_m420 + src_stride_m420, src_m420 + src_stride_m420 * 2,
    664                   dst_argb + dst_stride_argb, width);
    665     dst_argb += dst_stride_argb * 2;
    666     src_m420 += src_stride_m420 * 3;
    667   }
    668   if (height & 1) {
    669     NV12ToARGBRow(src_m420, src_m420 + src_stride_m420 * 2, dst_argb, width);
    670   }
    671   return 0;
    672 }
    673 
    674 // Convert YUY2 to ARGB.
    675 LIBYUV_API
    676 int YUY2ToARGB(const uint8* src_yuy2, int src_stride_yuy2,
    677                uint8* dst_argb, int dst_stride_argb,
    678                int width, int height) {
    679   if (!src_yuy2 || !dst_argb ||
    680       width <= 0 || height == 0) {
    681     return -1;
    682   }
    683   // Negative height means invert the image.
    684   if (height < 0) {
    685     height = -height;
    686     src_yuy2 = src_yuy2 + (height - 1) * src_stride_yuy2;
    687     src_stride_yuy2 = -src_stride_yuy2;
    688   }
    689   void (*YUY2ToUV422Row)(const uint8* src_yuy2, uint8* dst_u, uint8* dst_v,
    690       int pix) = YUY2ToUV422Row_C;
    691   void (*YUY2ToYRow)(const uint8* src_yuy2,
    692                      uint8* dst_y, int pix) = YUY2ToYRow_C;
    693 #if defined(HAS_YUY2TOYROW_SSE2)
    694   if (TestCpuFlag(kCpuHasSSE2)) {
    695     if (width > 16) {
    696       YUY2ToUV422Row = YUY2ToUV422Row_Any_SSE2;
    697       YUY2ToYRow = YUY2ToYRow_Any_SSE2;
    698     }
    699     if (IS_ALIGNED(width, 16)) {
    700       YUY2ToUV422Row = YUY2ToUV422Row_Unaligned_SSE2;
    701       YUY2ToYRow = YUY2ToYRow_Unaligned_SSE2;
    702       if (IS_ALIGNED(src_yuy2, 16) && IS_ALIGNED(src_stride_yuy2, 16)) {
    703         YUY2ToUV422Row = YUY2ToUV422Row_SSE2;
    704         YUY2ToYRow = YUY2ToYRow_SSE2;
    705       }
    706     }
    707   }
    708 #elif defined(HAS_YUY2TOYROW_NEON)
    709   if (TestCpuFlag(kCpuHasNEON)) {
    710     if (width > 8) {
    711       YUY2ToYRow = YUY2ToYRow_Any_NEON;
    712       if (width > 16) {
    713         YUY2ToUV422Row = YUY2ToUV422Row_Any_NEON;
    714       }
    715     }
    716     if (IS_ALIGNED(width, 8)) {
    717       YUY2ToYRow = YUY2ToYRow_NEON;
    718       if (IS_ALIGNED(width, 16)) {
    719         YUY2ToUV422Row = YUY2ToUV422Row_NEON;
    720       }
    721     }
    722   }
    723 #endif
    724 
    725   void (*I422ToARGBRow)(const uint8* y_buf,
    726                         const uint8* u_buf,
    727                         const uint8* v_buf,
    728                         uint8* argb_buf,
    729                         int width) = I422ToARGBRow_C;
    730 #if defined(HAS_I422TOARGBROW_NEON)
    731   if (TestCpuFlag(kCpuHasNEON)) {
    732     I422ToARGBRow = I422ToARGBRow_Any_NEON;
    733     if (IS_ALIGNED(width, 16)) {
    734       I422ToARGBRow = I422ToARGBRow_NEON;
    735     }
    736   }
    737 #elif defined(HAS_I422TOARGBROW_SSSE3)
    738   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    739     I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
    740     if (IS_ALIGNED(width, 8) &&
    741         IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    742       I422ToARGBRow = I422ToARGBRow_SSSE3;
    743     }
    744   }
    745 #endif
    746 
    747   SIMD_ALIGNED(uint8 rowy[kMaxStride]);
    748   SIMD_ALIGNED(uint8 rowu[kMaxStride]);
    749   SIMD_ALIGNED(uint8 rowv[kMaxStride]);
    750 
    751   for (int y = 0; y < height; ++y) {
    752     YUY2ToUV422Row(src_yuy2, rowu, rowv, width);
    753     YUY2ToYRow(src_yuy2, rowy, width);
    754     I422ToARGBRow(rowy, rowu, rowv, dst_argb, width);
    755     src_yuy2 += src_stride_yuy2;
    756     dst_argb += dst_stride_argb;
    757   }
    758   return 0;
    759 }
    760 
    761 // Convert UYVY to ARGB.
    762 LIBYUV_API
    763 int UYVYToARGB(const uint8* src_uyvy, int src_stride_uyvy,
    764                uint8* dst_argb, int dst_stride_argb,
    765                int width, int height) {
    766   if (!src_uyvy || !dst_argb ||
    767       width <= 0 || height == 0) {
    768     return -1;
    769   }
    770   // Negative height means invert the image.
    771   if (height < 0) {
    772     height = -height;
    773     src_uyvy = src_uyvy + (height - 1) * src_stride_uyvy;
    774     src_stride_uyvy = -src_stride_uyvy;
    775   }
    776   void (*UYVYToUV422Row)(const uint8* src_uyvy, uint8* dst_u, uint8* dst_v,
    777       int pix) = UYVYToUV422Row_C;
    778   void (*UYVYToYRow)(const uint8* src_uyvy,
    779                      uint8* dst_y, int pix) = UYVYToYRow_C;
    780 #if defined(HAS_UYVYTOYROW_SSE2)
    781   if (TestCpuFlag(kCpuHasSSE2)) {
    782     if (width > 16) {
    783       UYVYToUV422Row = UYVYToUV422Row_Any_SSE2;
    784       UYVYToYRow = UYVYToYRow_Any_SSE2;
    785     }
    786     if (IS_ALIGNED(width, 16)) {
    787       UYVYToUV422Row = UYVYToUV422Row_Unaligned_SSE2;
    788       UYVYToYRow = UYVYToYRow_Unaligned_SSE2;
    789       if (IS_ALIGNED(src_uyvy, 16) && IS_ALIGNED(src_stride_uyvy, 16)) {
    790         UYVYToUV422Row = UYVYToUV422Row_SSE2;
    791         UYVYToYRow = UYVYToYRow_SSE2;
    792       }
    793     }
    794   }
    795 #endif
    796   void (*I422ToARGBRow)(const uint8* y_buf,
    797                         const uint8* u_buf,
    798                         const uint8* v_buf,
    799                         uint8* argb_buf,
    800                         int width) = I422ToARGBRow_C;
    801 #if defined(HAS_I422TOARGBROW_NEON)
    802   if (TestCpuFlag(kCpuHasNEON)) {
    803     I422ToARGBRow = I422ToARGBRow_Any_NEON;
    804     if (IS_ALIGNED(width, 16)) {
    805       I422ToARGBRow = I422ToARGBRow_NEON;
    806     }
    807   }
    808 #elif defined(HAS_I422TOARGBROW_SSSE3)
    809   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
    810     I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
    811     if (IS_ALIGNED(width, 8) &&
    812         IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
    813       I422ToARGBRow = I422ToARGBRow_SSSE3;
    814     }
    815   }
    816 #endif
    817 
    818   SIMD_ALIGNED(uint8 rowy[kMaxStride]);
    819   SIMD_ALIGNED(uint8 rowu[kMaxStride]);
    820   SIMD_ALIGNED(uint8 rowv[kMaxStride]);
    821 
    822   for (int y = 0; y < height; ++y) {
    823     UYVYToUV422Row(src_uyvy, rowu, rowv, width);
    824     UYVYToYRow(src_uyvy, rowy, width);
    825     I422ToARGBRow(rowy, rowu, rowv, dst_argb, width);
    826     src_uyvy += src_stride_uyvy;
    827     dst_argb += dst_stride_argb;
    828   }
    829   return 0;
    830 }
    831 
    832 #ifdef HAVE_JPEG
    833 struct ARGBBuffers {
    834   uint8* argb;
    835   int argb_stride;
    836   int w;
    837   int h;
    838 };
    839 
    840 static void JpegI420ToARGB(void* opaque,
    841                          const uint8* const* data,
    842                          const int* strides,
    843                          int rows) {
    844   ARGBBuffers* dest = static_cast<ARGBBuffers*>(opaque);
    845   I420ToARGB(data[0], strides[0],
    846              data[1], strides[1],
    847              data[2], strides[2],
    848              dest->argb, dest->argb_stride,
    849              dest->w, rows);
    850   dest->argb += rows * dest->argb_stride;
    851   dest->h -= rows;
    852 }
    853 
    854 static void JpegI422ToARGB(void* opaque,
    855                            const uint8* const* data,
    856                            const int* strides,
    857                            int rows) {
    858   ARGBBuffers* dest = static_cast<ARGBBuffers*>(opaque);
    859   I422ToARGB(data[0], strides[0],
    860              data[1], strides[1],
    861              data[2], strides[2],
    862              dest->argb, dest->argb_stride,
    863              dest->w, rows);
    864   dest->argb += rows * dest->argb_stride;
    865   dest->h -= rows;
    866 }
    867 
    868 static void JpegI444ToARGB(void* opaque,
    869                            const uint8* const* data,
    870                            const int* strides,
    871                            int rows) {
    872   ARGBBuffers* dest = static_cast<ARGBBuffers*>(opaque);
    873   I444ToARGB(data[0], strides[0],
    874              data[1], strides[1],
    875              data[2], strides[2],
    876              dest->argb, dest->argb_stride,
    877              dest->w, rows);
    878   dest->argb += rows * dest->argb_stride;
    879   dest->h -= rows;
    880 }
    881 
    882 static void JpegI411ToARGB(void* opaque,
    883                            const uint8* const* data,
    884                            const int* strides,
    885                            int rows) {
    886   ARGBBuffers* dest = static_cast<ARGBBuffers*>(opaque);
    887   I411ToARGB(data[0], strides[0],
    888              data[1], strides[1],
    889              data[2], strides[2],
    890              dest->argb, dest->argb_stride,
    891              dest->w, rows);
    892   dest->argb += rows * dest->argb_stride;
    893   dest->h -= rows;
    894 }
    895 
    896 static void JpegI400ToARGB(void* opaque,
    897                            const uint8* const* data,
    898                            const int* strides,
    899                            int rows) {
    900   ARGBBuffers* dest = static_cast<ARGBBuffers*>(opaque);
    901   I400ToARGB(data[0], strides[0],
    902              dest->argb, dest->argb_stride,
    903              dest->w, rows);
    904   dest->argb += rows * dest->argb_stride;
    905   dest->h -= rows;
    906 }
    907 
    908 // MJPG (Motion JPeg) to ARGB
    909 // TODO(fbarchard): review w and h requirement. dw and dh may be enough.
    910 LIBYUV_API
    911 int MJPGToARGB(const uint8* sample,
    912                size_t sample_size,
    913                uint8* argb, int argb_stride,
    914                int w, int h,
    915                int dw, int dh) {
    916   if (sample_size == kUnknownDataSize) {
    917     // ERROR: MJPEG frame size unknown
    918     return -1;
    919   }
    920 
    921   // TODO(fbarchard): Port to C
    922   MJpegDecoder mjpeg_decoder;
    923   bool ret = mjpeg_decoder.LoadFrame(sample, sample_size);
    924   if (ret && (mjpeg_decoder.GetWidth() != w ||
    925               mjpeg_decoder.GetHeight() != h)) {
    926     // ERROR: MJPEG frame has unexpected dimensions
    927     mjpeg_decoder.UnloadFrame();
    928     return 1;  // runtime failure
    929   }
    930   if (ret) {
    931     ARGBBuffers bufs = { argb, argb_stride, dw, dh };
    932     // YUV420
    933     if (mjpeg_decoder.GetColorSpace() ==
    934             MJpegDecoder::kColorSpaceYCbCr &&
    935         mjpeg_decoder.GetNumComponents() == 3 &&
    936         mjpeg_decoder.GetVertSampFactor(0) == 2 &&
    937         mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
    938         mjpeg_decoder.GetVertSampFactor(1) == 1 &&
    939         mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
    940         mjpeg_decoder.GetVertSampFactor(2) == 1 &&
    941         mjpeg_decoder.GetHorizSampFactor(2) == 1) {
    942       ret = mjpeg_decoder.DecodeToCallback(&JpegI420ToARGB, &bufs, dw, dh);
    943     // YUV422
    944     } else if (mjpeg_decoder.GetColorSpace() ==
    945                    MJpegDecoder::kColorSpaceYCbCr &&
    946                mjpeg_decoder.GetNumComponents() == 3 &&
    947                mjpeg_decoder.GetVertSampFactor(0) == 1 &&
    948                mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
    949                mjpeg_decoder.GetVertSampFactor(1) == 1 &&
    950                mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
    951                mjpeg_decoder.GetVertSampFactor(2) == 1 &&
    952                mjpeg_decoder.GetHorizSampFactor(2) == 1) {
    953       ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToARGB, &bufs, dw, dh);
    954     // YUV444
    955     } else if (mjpeg_decoder.GetColorSpace() ==
    956                    MJpegDecoder::kColorSpaceYCbCr &&
    957                mjpeg_decoder.GetNumComponents() == 3 &&
    958                mjpeg_decoder.GetVertSampFactor(0) == 1 &&
    959                mjpeg_decoder.GetHorizSampFactor(0) == 1 &&
    960                mjpeg_decoder.GetVertSampFactor(1) == 1 &&
    961                mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
    962                mjpeg_decoder.GetVertSampFactor(2) == 1 &&
    963                mjpeg_decoder.GetHorizSampFactor(2) == 1) {
    964       ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToARGB, &bufs, dw, dh);
    965     // YUV411
    966     } else if (mjpeg_decoder.GetColorSpace() ==
    967                    MJpegDecoder::kColorSpaceYCbCr &&
    968                mjpeg_decoder.GetNumComponents() == 3 &&
    969                mjpeg_decoder.GetVertSampFactor(0) == 1 &&
    970                mjpeg_decoder.GetHorizSampFactor(0) == 4 &&
    971                mjpeg_decoder.GetVertSampFactor(1) == 1 &&
    972                mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
    973                mjpeg_decoder.GetVertSampFactor(2) == 1 &&
    974                mjpeg_decoder.GetHorizSampFactor(2) == 1) {
    975       ret = mjpeg_decoder.DecodeToCallback(&JpegI411ToARGB, &bufs, dw, dh);
    976     // YUV400
    977     } else if (mjpeg_decoder.GetColorSpace() ==
    978                    MJpegDecoder::kColorSpaceGrayscale &&
    979                mjpeg_decoder.GetNumComponents() == 1 &&
    980                mjpeg_decoder.GetVertSampFactor(0) == 1 &&
    981                mjpeg_decoder.GetHorizSampFactor(0) == 1) {
    982       ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToARGB, &bufs, dw, dh);
    983     } else {
    984       // TODO(fbarchard): Implement conversion for any other colorspace/sample
    985       // factors that occur in practice. 411 is supported by libjpeg
    986       // ERROR: Unable to convert MJPEG frame because format is not supported
    987       mjpeg_decoder.UnloadFrame();
    988       return 1;
    989     }
    990   }
    991   return 0;
    992 }
    993 #endif
    994 
    995 // Convert camera sample to I420 with cropping, rotation and vertical flip.
    996 // src_width is used for source stride computation
    997 // src_height is used to compute location of planes, and indicate inversion
    998 // sample_size is measured in bytes and is the size of the frame.
    999 //   With MJPEG it is the compressed size of the frame.
   1000 LIBYUV_API
   1001 int ConvertToARGB(const uint8* sample, size_t sample_size,
   1002                   uint8* dst_argb, int argb_stride,
   1003                   int crop_x, int crop_y,
   1004                   int src_width, int src_height,
   1005                   int dst_width, int dst_height,
   1006                   RotationMode rotation,
   1007                   uint32 format) {
   1008   if (dst_argb == NULL || sample == NULL ||
   1009       src_width <= 0 || dst_width <= 0 ||
   1010       src_height == 0 || dst_height == 0) {
   1011     return -1;
   1012   }
   1013   int aligned_src_width = (src_width + 1) & ~1;
   1014   const uint8* src;
   1015   const uint8* src_uv;
   1016   int abs_src_height = (src_height < 0) ? -src_height : src_height;
   1017   int inv_dst_height = (dst_height < 0) ? -dst_height : dst_height;
   1018   if (src_height < 0) {
   1019     inv_dst_height = -inv_dst_height;
   1020   }
   1021   int r = 0;
   1022 
   1023   // One pass rotation is available for some formats. For the rest, convert
   1024   // to I420 (with optional vertical flipping) into a temporary I420 buffer,
   1025   // and then rotate the I420 to the final destination buffer.
   1026   // For in-place conversion, if destination dst_argb is same as source sample,
   1027   // also enable temporary buffer.
   1028   bool need_buf = (rotation && format != FOURCC_ARGB) || dst_argb == sample;
   1029   uint8* tmp_argb = dst_argb;
   1030   int tmp_argb_stride = argb_stride;
   1031   uint8* buf = NULL;
   1032   int abs_dst_height = (dst_height < 0) ? -dst_height : dst_height;
   1033   if (need_buf) {
   1034     int argb_size = dst_width * abs_dst_height * 4;
   1035     buf = new uint8[argb_size];
   1036     if (!buf) {
   1037       return 1;  // Out of memory runtime error.
   1038     }
   1039     dst_argb = buf;
   1040     argb_stride = dst_width;
   1041   }
   1042 
   1043   switch (format) {
   1044     // Single plane formats
   1045     case FOURCC_YUY2:
   1046       src = sample + (aligned_src_width * crop_y + crop_x) * 2;
   1047       r = YUY2ToARGB(src, aligned_src_width * 2,
   1048                      dst_argb, argb_stride,
   1049                      dst_width, inv_dst_height);
   1050       break;
   1051     case FOURCC_UYVY:
   1052       src = sample + (aligned_src_width * crop_y + crop_x) * 2;
   1053       r = UYVYToARGB(src, aligned_src_width * 2,
   1054                      dst_argb, argb_stride,
   1055                      dst_width, inv_dst_height);
   1056       break;
   1057 //    case FOURCC_V210:
   1058       // stride is multiple of 48 pixels (128 bytes).
   1059       // pixels come in groups of 6 = 16 bytes
   1060 //      src = sample + (aligned_src_width + 47) / 48 * 128 * crop_y +
   1061 //            crop_x / 6 * 16;
   1062 //      r = V210ToARGB(src, (aligned_src_width + 47) / 48 * 128,
   1063 //                     dst_argb, argb_stride,
   1064 //                     dst_width, inv_dst_height);
   1065 //      break;
   1066     case FOURCC_24BG:
   1067       src = sample + (src_width * crop_y + crop_x) * 3;
   1068       r = RGB24ToARGB(src, src_width * 3,
   1069                       dst_argb, argb_stride,
   1070                       dst_width, inv_dst_height);
   1071       break;
   1072     case FOURCC_RAW:
   1073       src = sample + (src_width * crop_y + crop_x) * 3;
   1074       r = RAWToARGB(src, src_width * 3,
   1075                     dst_argb, argb_stride,
   1076                     dst_width, inv_dst_height);
   1077       break;
   1078     case FOURCC_ARGB:
   1079       src = sample + (src_width * crop_y + crop_x) * 4;
   1080       r = ARGBToARGB(src, src_width * 4,
   1081                      dst_argb, argb_stride,
   1082                      dst_width, inv_dst_height);
   1083       break;
   1084     case FOURCC_BGRA:
   1085       src = sample + (src_width * crop_y + crop_x) * 4;
   1086       r = BGRAToARGB(src, src_width * 4,
   1087                      dst_argb, argb_stride,
   1088                      dst_width, inv_dst_height);
   1089       break;
   1090     case FOURCC_ABGR:
   1091       src = sample + (src_width * crop_y + crop_x) * 4;
   1092       r = ABGRToARGB(src, src_width * 4,
   1093                      dst_argb, argb_stride,
   1094                      dst_width, inv_dst_height);
   1095       break;
   1096     case FOURCC_RGBA:
   1097       src = sample + (src_width * crop_y + crop_x) * 4;
   1098       r = RGBAToARGB(src, src_width * 4,
   1099                      dst_argb, argb_stride,
   1100                      dst_width, inv_dst_height);
   1101       break;
   1102     case FOURCC_RGBP:
   1103       src = sample + (src_width * crop_y + crop_x) * 2;
   1104       r = RGB565ToARGB(src, src_width * 2,
   1105                        dst_argb, argb_stride,
   1106                        dst_width, inv_dst_height);
   1107       break;
   1108     case FOURCC_RGBO:
   1109       src = sample + (src_width * crop_y + crop_x) * 2;
   1110       r = ARGB1555ToARGB(src, src_width * 2,
   1111                          dst_argb, argb_stride,
   1112                          dst_width, inv_dst_height);
   1113       break;
   1114     case FOURCC_R444:
   1115       src = sample + (src_width * crop_y + crop_x) * 2;
   1116       r = ARGB4444ToARGB(src, src_width * 2,
   1117                          dst_argb, argb_stride,
   1118                          dst_width, inv_dst_height);
   1119       break;
   1120     // TODO(fbarchard): Support cropping Bayer by odd numbers
   1121     // by adjusting fourcc.
   1122     case FOURCC_BGGR:
   1123       src = sample + (src_width * crop_y + crop_x);
   1124       r = BayerBGGRToARGB(src, src_width,
   1125                           dst_argb, argb_stride,
   1126                           dst_width, inv_dst_height);
   1127       break;
   1128 
   1129     case FOURCC_GBRG:
   1130       src = sample + (src_width * crop_y + crop_x);
   1131       r = BayerGBRGToARGB(src, src_width,
   1132                           dst_argb, argb_stride,
   1133                           dst_width, inv_dst_height);
   1134       break;
   1135 
   1136     case FOURCC_GRBG:
   1137       src = sample + (src_width * crop_y + crop_x);
   1138       r = BayerGRBGToARGB(src, src_width,
   1139                           dst_argb, argb_stride,
   1140                           dst_width, inv_dst_height);
   1141       break;
   1142 
   1143     case FOURCC_RGGB:
   1144       src = sample + (src_width * crop_y + crop_x);
   1145       r = BayerRGGBToARGB(src, src_width,
   1146                           dst_argb, argb_stride,
   1147                           dst_width, inv_dst_height);
   1148       break;
   1149 
   1150     case FOURCC_I400:
   1151       src = sample + src_width * crop_y + crop_x;
   1152       r = I400ToARGB(src, src_width,
   1153                      dst_argb, argb_stride,
   1154                      dst_width, inv_dst_height);
   1155       break;
   1156 
   1157     // Biplanar formats
   1158     case FOURCC_NV12:
   1159       src = sample + (src_width * crop_y + crop_x);
   1160       src_uv = sample + aligned_src_width * (src_height + crop_y / 2) + crop_x;
   1161       r = NV12ToARGB(src, src_width,
   1162                      src_uv, aligned_src_width,
   1163                      dst_argb, argb_stride,
   1164                      dst_width, inv_dst_height);
   1165       break;
   1166     case FOURCC_NV21:
   1167       src = sample + (src_width * crop_y + crop_x);
   1168       src_uv = sample + aligned_src_width * (src_height + crop_y / 2) + crop_x;
   1169       // Call NV12 but with u and v parameters swapped.
   1170       r = NV21ToARGB(src, src_width,
   1171                      src_uv, aligned_src_width,
   1172                      dst_argb, argb_stride,
   1173                      dst_width, inv_dst_height);
   1174       break;
   1175     case FOURCC_M420:
   1176       src = sample + (src_width * crop_y) * 12 / 8 + crop_x;
   1177       r = M420ToARGB(src, src_width,
   1178                      dst_argb, argb_stride,
   1179                      dst_width, inv_dst_height);
   1180       break;
   1181 //    case FOURCC_Q420:
   1182 //      src = sample + (src_width + aligned_src_width * 2) * crop_y + crop_x;
   1183 //      src_uv = sample + (src_width + aligned_src_width * 2) * crop_y +
   1184 //               src_width + crop_x * 2;
   1185 //      r = Q420ToARGB(src, src_width * 3,
   1186 //                    src_uv, src_width * 3,
   1187 //                    dst_argb, argb_stride,
   1188 //                    dst_width, inv_dst_height);
   1189 //      break;
   1190     // Triplanar formats
   1191     case FOURCC_I420:
   1192     case FOURCC_YU12:
   1193     case FOURCC_YV12: {
   1194       const uint8* src_y = sample + (src_width * crop_y + crop_x);
   1195       const uint8* src_u;
   1196       const uint8* src_v;
   1197       int halfwidth = (src_width + 1) / 2;
   1198       int halfheight = (abs_src_height + 1) / 2;
   1199       if (format == FOURCC_YV12) {
   1200         src_v = sample + src_width * abs_src_height +
   1201             (halfwidth * crop_y + crop_x) / 2;
   1202         src_u = sample + src_width * abs_src_height +
   1203             halfwidth * (halfheight + crop_y / 2) + crop_x / 2;
   1204       } else {
   1205         src_u = sample + src_width * abs_src_height +
   1206             (halfwidth * crop_y + crop_x) / 2;
   1207         src_v = sample + src_width * abs_src_height +
   1208             halfwidth * (halfheight + crop_y / 2) + crop_x / 2;
   1209       }
   1210       r = I420ToARGB(src_y, src_width,
   1211                      src_u, halfwidth,
   1212                      src_v, halfwidth,
   1213                      dst_argb, argb_stride,
   1214                      dst_width, inv_dst_height);
   1215       break;
   1216     }
   1217     case FOURCC_I422:
   1218     case FOURCC_YV16: {
   1219       const uint8* src_y = sample + src_width * crop_y + crop_x;
   1220       const uint8* src_u;
   1221       const uint8* src_v;
   1222       int halfwidth = (src_width + 1) / 2;
   1223       if (format == FOURCC_YV16) {
   1224         src_v = sample + src_width * abs_src_height +
   1225             halfwidth * crop_y + crop_x / 2;
   1226         src_u = sample + src_width * abs_src_height +
   1227             halfwidth * (abs_src_height + crop_y) + crop_x / 2;
   1228       } else {
   1229         src_u = sample + src_width * abs_src_height +
   1230             halfwidth * crop_y + crop_x / 2;
   1231         src_v = sample + src_width * abs_src_height +
   1232             halfwidth * (abs_src_height + crop_y) + crop_x / 2;
   1233       }
   1234       r = I422ToARGB(src_y, src_width,
   1235                      src_u, halfwidth,
   1236                      src_v, halfwidth,
   1237                      dst_argb, argb_stride,
   1238                      dst_width, inv_dst_height);
   1239       break;
   1240     }
   1241     case FOURCC_I444:
   1242     case FOURCC_YV24: {
   1243       const uint8* src_y = sample + src_width * crop_y + crop_x;
   1244       const uint8* src_u;
   1245       const uint8* src_v;
   1246       if (format == FOURCC_YV24) {
   1247         src_v = sample + src_width * (abs_src_height + crop_y) + crop_x;
   1248         src_u = sample + src_width * (abs_src_height * 2 + crop_y) + crop_x;
   1249       } else {
   1250         src_u = sample + src_width * (abs_src_height + crop_y) + crop_x;
   1251         src_v = sample + src_width * (abs_src_height * 2 + crop_y) + crop_x;
   1252       }
   1253       r = I444ToARGB(src_y, src_width,
   1254                      src_u, src_width,
   1255                      src_v, src_width,
   1256                      dst_argb, argb_stride,
   1257                      dst_width, inv_dst_height);
   1258       break;
   1259     }
   1260     case FOURCC_I411: {
   1261       int quarterwidth = (src_width + 3) / 4;
   1262       const uint8* src_y = sample + src_width * crop_y + crop_x;
   1263       const uint8* src_u = sample + src_width * abs_src_height +
   1264           quarterwidth * crop_y + crop_x / 4;
   1265       const uint8* src_v = sample + src_width * abs_src_height +
   1266           quarterwidth * (abs_src_height + crop_y) + crop_x / 4;
   1267       r = I411ToARGB(src_y, src_width,
   1268                      src_u, quarterwidth,
   1269                      src_v, quarterwidth,
   1270                      dst_argb, argb_stride,
   1271                      dst_width, inv_dst_height);
   1272       break;
   1273     }
   1274 #ifdef HAVE_JPEG
   1275     case FOURCC_MJPG:
   1276       r = MJPGToARGB(sample, sample_size,
   1277                      dst_argb, argb_stride,
   1278                      src_width, abs_src_height, dst_width, inv_dst_height);
   1279       break;
   1280 #endif
   1281     default:
   1282       r = -1;  // unknown fourcc - return failure code.
   1283   }
   1284 
   1285   if (need_buf) {
   1286     if (!r) {
   1287       r = ARGBRotate(dst_argb, argb_stride,
   1288                      tmp_argb, tmp_argb_stride,
   1289                      dst_width, abs_dst_height, rotation);
   1290     }
   1291     delete buf;
   1292   }
   1293 
   1294   return r;
   1295 }
   1296 
   1297 #ifdef __cplusplus
   1298 }  // extern "C"
   1299 }  // namespace libyuv
   1300 #endif
   1301