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commit 93832f616ef3ea2dde888cf8e0b7e1a2da077d06 Author: Cyril Hrubis metan@ucw.cz Date: Fri May 2 23:29:31 2014 +0200

loaders: BMP: Use IO for saving.

Adds GP_IOWriteF() and converts BMP saver to it.

There is also new GP_WriteBMP() function that takes opened IO instead of a path as a parameter.

Signed-off-by: Cyril Hrubis metan@ucw.cz

diff --git a/build/syms/Loaders_symbols.txt b/build/syms/Loaders_symbols.txt index f8c1d68c..b73506dd 100644 --- a/build/syms/Loaders_symbols.txt +++ b/build/syms/Loaders_symbols.txt @@ -15,6 +15,7 @@ GP_LoadPNGMetaData GP_SavePNG

GP_MatchBMP +GP_WriteBMP GP_LoadBMP GP_ReadBMP GP_SaveBMP @@ -109,6 +110,7 @@ GP_IOFill GP_IOReadF GP_IOReadB2 GP_IOReadB4 +GP_IOWriteF

GP_IOZlib GP_IOZlibReset diff --git a/include/loaders/GP_BMP.h b/include/loaders/GP_BMP.h index 48eff73a..047d7733 100644 --- a/include/loaders/GP_BMP.h +++ b/include/loaders/GP_BMP.h @@ -41,6 +41,14 @@ GP_Context *GP_ReadBMP(GP_IO *io, GP_ProgressCallback *callback); GP_Context *GP_LoadBMP(const char *src_path, GP_ProgressCallback *callback);

/* + * Writes a BMP to an IO Stream. + * + * Returns zero on success, non-zero on failure and errno is set. + */ +int GP_WriteBMP(const GP_Context *src, GP_IO *io, + GP_ProgressCallback *callback); + +/* * Saves BMP to a file. Zero is returned on succes. Upon failure non-zero is * returned and errno is filled accordingly. */ diff --git a/include/loaders/GP_IO.h b/include/loaders/GP_IO.h index 6947e3b3..19a1c78e 100644 --- a/include/loaders/GP_IO.h +++ b/include/loaders/GP_IO.h @@ -173,6 +173,8 @@ enum GP_IOReadFTypes {

int GP_IOReadF(GP_IO *self, uint16_t *types, ...);

+int GP_IOWriteF(GP_IO *self, uint16_t *types, ...); + /* * GP_IOReadF wrappers for convinient reading of single value */ diff --git a/libs/loaders/GP_BMP.c b/libs/loaders/GP_BMP.c index cc03a5e3..1d9e9c20 100644 --- a/libs/loaders/GP_BMP.c +++ b/libs/loaders/GP_BMP.c @@ -226,8 +226,7 @@ static int read_bitmap_info_header(GP_IO *io, struct bitmap_info_header *header)

/* This must be 1 according to specs */ if (nr_planes != 1) - GP_DEBUG(1, "Number of planes is %"PRId16" should be 1", - nr_planes); + GP_WARN("Number of planes %"PRId16" should be 1", nr_planes);

GP_DEBUG(2, "Have BMP bitmap size %"PRId32"x%"PRId32" %"PRIu16" " "bpp, %"PRIu32" pallete colors, '%s' compression", @@ -742,22 +741,43 @@ static uint32_t bmp_count_bitmap_size(struct bitmap_info_header *header) return header->h * bmp_align_row_size(header->bpp * header->w); }

-static int bmp_write_header(struct bitmap_info_header *header, FILE *f) +static int bmp_write_header(GP_IO *io, struct bitmap_info_header *header) { uint32_t bitmap_size = bmp_count_bitmap_size(header); uint32_t file_size = bitmap_size + header->header_size + 14;

- /* Bitmap Header */ - if (GP_FWrite(f, "A2 L4 0x00 0x00 0x00 0x00 L4", "BM", - file_size, header->pixel_offset) != 7) + uint16_t bitmap_header[] = { + 'B', 'M', /* signature */ + GP_IO_L4, /* pixels offset */ + 0x00, 0x00, 0x00, 0x00, /* reserved */ + GP_IO_L4, /* file size */ + GP_IO_END, + }; + + if (GP_IOWriteF(io, bitmap_header, file_size, header->pixel_offset)) return EIO;

- /* Bitmap Info Header */ - if (GP_FWrite(f, "L4 L4 L4 L2 L2 L4 L4 L4 L4 L4 L4", - header->header_size, header->w, header->h, 1, - header->bpp, header->compress_type, bitmap_size, 0, 0, - header->palette_colors, 0) != 11) + uint16_t bitmap_info_header[] = { + GP_IO_L4, /* header size */ + GP_IO_L4, /* width */ + GP_IO_L4, /* height */ + 0x01, 0x00, /* nr planes, always 1 */ + GP_IO_L2, /* bpp */ + GP_IO_L4, /* compression type */ + GP_IO_L4, /* bitmap size */ + 0, 0, 0, 0, /* X PPM */ + 0, 0, 0, 0, /* Y PPM */ + GP_IO_L4, /* palette colors */ + 0, 0, 0, 0, /* important palette colors */ + GP_IO_END, + }; + + if (GP_IOWriteF(io, bitmap_info_header, header->header_size, + header->w, header->h, header->bpp, + header->compress_type, bitmap_size, + header->palette_colors)) { return EIO; + }

return 0; } @@ -796,7 +816,8 @@ static int bmp_fill_header(const GP_Context *src, struct bitmap_info_header *hea return 0; }

-static int bmp_write_data(FILE *f, const GP_Context *src, GP_ProgressCallback *callback) +static int bmp_write_data(GP_IO *io, const GP_Context *src, + GP_ProgressCallback *callback) { int y; uint32_t padd_len = 0; @@ -817,13 +838,14 @@ static int bmp_write_data(FILE *f, const GP_Context *src, GP_ProgressCallback *c row = tmp; }

- if (fwrite(row, src->bytes_per_row, 1, f) != 1) + if (GP_IOWrite(io, row, src->bytes_per_row) != src->bytes_per_row) return EIO;

/* write padding */ - if (padd_len) - if (fwrite(padd, padd_len, 1, f) != 1) + if (padd_len) { + if (GP_IOWrite(io, padd, padd_len) != padd_len) return EIO; + }

if (GP_ProgressCallbackReport(callback, y, src->h, src->w)) { GP_DEBUG(1, "Operation aborted"); @@ -831,50 +853,55 @@ static int bmp_write_data(FILE *f, const GP_Context *src, GP_ProgressCallback *c } }

+ GP_ProgressCallbackDone(callback); + return 0; }

-int GP_SaveBMP(const GP_Context *src, const char *dst_path, - GP_ProgressCallback *callback) +int GP_WriteBMP(const GP_Context *src, GP_IO *io, + GP_ProgressCallback *callback) { struct bitmap_info_header header; - FILE *f; int err;

- GP_DEBUG(1, "Saving BMP Image '%s'", dst_path); - if ((err = bmp_fill_header(src, &header))) - goto err0; + goto err;

- f = fopen(dst_path, "wb"); + if ((err = bmp_write_header(io, &header))) + goto err;

- if (f == NULL) { - err = errno; - GP_DEBUG(1, "Failed to open '%s' for writing: %s", - dst_path, strerror(errno)); - goto err0; - } + if ((err = bmp_write_data(io, src, callback))) + goto err;

- if ((err = bmp_write_header(&header, f))) - goto err1; + return 0; +err: + errno = err; + return 1; +}

- if ((err = bmp_write_data(f, src, callback))) - goto err1;

- if (fclose(f)) { - err = errno; - GP_DEBUG(1, "Failed to close file '%s': %s", - dst_path, strerror(errno)); - goto err1; +int GP_SaveBMP(const GP_Context *src, const char *dst_path, + GP_ProgressCallback *callback) +{ + GP_IO *io; + + GP_DEBUG(1, "Saving BMP Image '%s'", dst_path); + + io = GP_IOFile(dst_path, GP_IO_WRONLY); + + if (!io) + return 1; + + if (GP_WriteBMP(src, io, callback)) { + GP_IOClose(io); + unlink(dst_path); + return 1; }

- GP_ProgressCallbackDone(callback); + if (GP_IOClose(io)) { + unlink(dst_path); + return 1; + }

return 0; -err1: - fclose(f); -err0: - unlink(dst_path); - errno = err; - return 1; } diff --git a/libs/loaders/GP_IO.c b/libs/loaders/GP_IO.c index 0b77bd5c..145058b8 100644 --- a/libs/loaders/GP_IO.c +++ b/libs/loaders/GP_IO.c @@ -27,6 +27,7 @@ #include <sys/stat.h> #include <fcntl.h> #include <stdarg.h> +#include <inttypes.h>

#include <core/GP_ByteOrder.h> #include <core/GP_Debug.h> @@ -612,6 +613,60 @@ end: return ret; }

+int GP_IOWriteF(GP_IO *io, uint16_t *types, ...) +{ + va_list va; + uint8_t *ptr, t; + int32_t i4; + int16_t i2; + + va_start(va, types); + + while (*types != GP_IO_END) { + switch (TYPE(*types)) { + case GP_IO_CONST: + t = VAL(*types); + if (GP_IOWrite(io, &t, 1) != 1) + goto err; + break; + case GP_IO_L2: + case GP_IO_B2: + i2 = va_arg(va, int); + ptr = (void*)&i2; + + if (needs_swap(*types)) + GP_SWAP(ptr[0], ptr[1]); + + if (GP_IOWrite(io, ptr, 2) != 2) + goto err; + break; + case GP_IO_L4: + case GP_IO_B4: + i4 = va_arg(va, int); + ptr = (void*)&i4; + + if (needs_swap(*types)) { + GP_SWAP(ptr[0], ptr[3]); + GP_SWAP(ptr[1], ptr[2]); + } + + if (GP_IOWrite(io, ptr, 4) != 4) + goto err; + break; + default: + GP_WARN("Invalid type %"PRIu16"n", *types); + goto err; + } + types++; + } + + va_end(va); + return 0; +err: + va_end(va); + return -1; +} + int GP_IOReadB4(GP_IO *io, uint32_t *val) { uint16_t desc[] = {

-----------------------------------------------------------------------

Summary of changes: build/syms/Loaders_symbols.txt | 2 + include/loaders/GP_BMP.h | 8 +++ include/loaders/GP_IO.h | 2 + libs/loaders/GP_BMP.c | 115 ++++++++++++++++++++++++--------------- libs/loaders/GP_IO.c | 55 +++++++++++++++++++ 5 files changed, 138 insertions(+), 44 deletions(-)

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