diff options
author | wm4 <wm4@mplayer2.org> | 2011-10-06 20:46:02 +0200 |
---|---|---|
committer | wm4 <wm4@mplayer2.org> | 2012-01-18 04:45:22 +0100 |
commit | 09cdd1406d5abe60bce57c7c2c3e71abe4330053 (patch) | |
tree | 0558584d4414c2ac44ae720c46fb33d2ec010019 /screenshot.c | |
parent | fee4d3b473deeb7b77d868ad2d78fc61446fe364 (diff) | |
download | mpv-09cdd1406d5abe60bce57c7c2c3e71abe4330053.tar.bz2 mpv-09cdd1406d5abe60bce57c7c2c3e71abe4330053.tar.xz |
screenshot: add jpg support
The screenshot image file type can now be selected with the
--screenshot-filetype option. The --screenshot-jpeg-quality option
controls the compression setting of the written JPEG image file.
Diffstat (limited to 'screenshot.c')
-rw-r--r-- | screenshot.c | 127 |
1 files changed, 115 insertions, 12 deletions
diff --git a/screenshot.c b/screenshot.c index 5ebe2e647f..3fe2bf4866 100644 --- a/screenshot.c +++ b/screenshot.c @@ -20,6 +20,7 @@ #include <stdlib.h> #include <string.h> #include <inttypes.h> +#include <setjmp.h> #include <sys/types.h> #include <sys/stat.h> @@ -29,6 +30,11 @@ #include <libavcodec/avcodec.h> #include "config.h" + +#ifdef CONFIG_JPEG +#include <jpeglib.h> +#endif + #include "talloc.h" #include "screenshot.h" #include "mp_core.h" @@ -46,6 +52,8 @@ #include "libvo/csputils.h" typedef struct screenshot_ctx { + struct MPContext *mpctx; + int full_window; int each_frame; int using_vf_screenshot; @@ -54,13 +62,30 @@ typedef struct screenshot_ctx { char fname[102]; } screenshot_ctx; +struct img_writer { + const char *file_ext; + int (*write)(screenshot_ctx *ctx, mp_image_t *image); +}; + static screenshot_ctx *screenshot_get_ctx(MPContext *mpctx) { - if (!mpctx->screenshot_ctx) - mpctx->screenshot_ctx = talloc_zero(mpctx, screenshot_ctx); + if (!mpctx->screenshot_ctx) { + mpctx->screenshot_ctx = talloc(mpctx, screenshot_ctx); + *mpctx->screenshot_ctx = (screenshot_ctx) { + .mpctx = mpctx, + }; + } return mpctx->screenshot_ctx; } +static FILE *open_file(screenshot_ctx *ctx, char *fname) { + FILE *fp = fopen(fname, "wb"); + if (fp == NULL) + mp_msg(MSGT_CPLAYER, MSGL_ERR, "\nPNG Error opening %s for writing!\n", + fname); + return fp; +} + static int write_png(screenshot_ctx *ctx, struct mp_image *image) { char *fname = ctx->fname; @@ -95,13 +120,9 @@ static int write_png(screenshot_ctx *ctx, struct mp_image *image) if (size < 1) goto error_exit; - fp = fopen(fname, "wb"); - if (fp == NULL) { - avcodec_close(avctx); - mp_msg(MSGT_CPLAYER, MSGL_ERR, "\nPNG Error opening %s for writing!\n", - fname); + fp = open_file(ctx, fname); + if (fp == NULL) goto error_exit; - } fwrite(outbuffer, size, 1, fp); fflush(fp); @@ -119,6 +140,87 @@ error_exit: return success; } +#ifdef CONFIG_JPEG + +static void write_jpeg_error_exit(j_common_ptr cinfo) +{ + // NOTE: do not write error message, too much effort to connect the libjpeg + // log callbacks with mplayer's log function mp_msp() + + // Return control to the setjmp point + longjmp(*(jmp_buf*)cinfo->client_data, 1); +} + +static int write_jpeg(screenshot_ctx *ctx, mp_image_t *image) +{ + struct jpeg_compress_struct cinfo; + struct jpeg_error_mgr jerr; + FILE *outfile = open_file(ctx, ctx->fname); + + if (!outfile) + return 0; + + cinfo.err = jpeg_std_error(&jerr); + jerr.error_exit = write_jpeg_error_exit; + + jmp_buf error_return_jmpbuf; + cinfo.client_data = &error_return_jmpbuf; + if (setjmp(cinfo.client_data)) { + jpeg_destroy_compress(&cinfo); + fclose(outfile); + return 0; + } + + jpeg_create_compress(&cinfo); + jpeg_stdio_dest(&cinfo, outfile); + + cinfo.image_width = image->width; + cinfo.image_height = image->height; + cinfo.input_components = 3; + cinfo.in_color_space = JCS_RGB; + + jpeg_set_defaults(&cinfo); + jpeg_set_quality(&cinfo, ctx->mpctx->opts.screenshot_jpeg_quality, 1); + + jpeg_start_compress(&cinfo, TRUE); + + while (cinfo.next_scanline < cinfo.image_height) { + JSAMPROW row_pointer[1]; + row_pointer[0] = image->planes[0] + cinfo.next_scanline * image->stride[0]; + jpeg_write_scanlines(&cinfo, row_pointer,1); + } + + jpeg_finish_compress(&cinfo); + + jpeg_destroy_compress(&cinfo); + fclose(outfile); + + return 1; +} + +#endif + +static const struct img_writer img_writers[] = { + { "png", write_png }, +#ifdef CONFIG_JPEG + { "jpg", write_jpeg }, + { "jpeg", write_jpeg }, +#endif +}; + +static const struct img_writer *get_writer(screenshot_ctx *ctx) +{ + const char *type = ctx->mpctx->opts.screenshot_filetype; + + for (size_t n = 0; n < sizeof(img_writers) / sizeof(img_writers[0]); n++) { + const struct img_writer *writer = &img_writers[n]; + if (type && strcmp(type, writer->file_ext) == 0) + return writer; + } + + return &img_writers[0]; +} + static int fexists(char *fname) { struct stat dummy; @@ -128,10 +230,10 @@ static int fexists(char *fname) return 0; } -static void gen_fname(screenshot_ctx *ctx) +static void gen_fname(screenshot_ctx *ctx, const char *ext) { do { - snprintf(ctx->fname, 100, "shot%04d.png", ++ctx->frameno); + snprintf(ctx->fname, 100, "shot%04d.%s", ++ctx->frameno, ext); } while (fexists(ctx->fname) && ctx->frameno < 100000); if (fexists(ctx->fname)) { ctx->fname[0] = '\0'; @@ -145,6 +247,7 @@ static void gen_fname(screenshot_ctx *ctx) void screenshot_save(struct MPContext *mpctx, struct mp_image *image) { screenshot_ctx *ctx = screenshot_get_ctx(mpctx); + const struct img_writer *writer = get_writer(ctx); struct mp_image *dst = alloc_mpi(image->w, image->h, IMGFMT_RGB24); struct SwsContext *sws = sws_getContextFromCmdLine_hq(image->width, @@ -163,8 +266,8 @@ void screenshot_save(struct MPContext *mpctx, struct mp_image *image) sws_scale(sws, (const uint8_t **)image->planes, image->stride, 0, image->height, dst->planes, dst->stride); - gen_fname(ctx); - write_png(ctx, dst); + gen_fname(ctx, writer->file_ext); + writer->write(ctx, dst); sws_freeContext(sws); free_mp_image(dst); |