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CLI : scale

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This commit is contained in:
lovebird 2025-05-04 17:32:46 +02:00
parent ddd28384ae
commit d2e960d231
6 changed files with 32 additions and 6 deletions
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1
packages/content/ref/pdf-to-images/dist/lib/convert.js vendored
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@ -109,6 +109,7 @@ export async function runConversion(config, logger) {
outputPathTemplate,
dpi: config.dpi,
format: config.format,
scale: config.scale,
startPage: config.startPage,
endPage: config.endPage,
logger

12
packages/content/ref/pdf-to-images/dist/lib/pdf.js vendored
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@ -41,6 +41,10 @@ export async function convertPdfToImages(pdfData, options) {
}
const numPagesToProcess = end - start + 1;
logger.info(`Processing pages ${start + 1} to ${end + 1} (${numPagesToProcess} pages) of ${pageCount} total`);
// Determine the scaling matrix
const scaleValue = options.scale ?? 2;
const matrix = scaleValue === 1 ? mupdf.Matrix.identity : mupdf.Matrix.scale(scaleValue, scaleValue);
logger.info(`Using scale factor: ${scaleValue}`);
for (let i = start; i <= end; i++) {
const pageNumber = i + 1; // User-facing page number (1-based)
// Create page-specific variables
@ -51,10 +55,14 @@ export async function convertPdfToImages(pdfData, options) {
// Resolve the output path using the template and page-specific variables
const outputPath = await resolveVariables(options.outputPathTemplate, false, pageVariables);
const page = doc.loadPage(i);
const pixmap = page.toPixmap([1, 0, 0, 1, 0, 0], mupdf.ColorSpace.DeviceRGB, false);
// Use the scaling matrix here
const pixmap = page.toPixmap(matrix, mupdf.ColorSpace.DeviceRGB, false);
// Note: DPI is implicitly handled by the scaling factor now.
// The pixmap dimensions will be scaled * scaleFactor.
// We might want to remove the explicit DPI option later if it's confusing.
const imageData = options.format === 'png'
? pixmap.asPNG()
: pixmap.asJPEG(100, false);
: pixmap.asJPEG(60, false);
mkdir(dirname(outputPath));
writeFileSync(outputPath, imageDataObjectToBuffer(imageData));
outputFiles.push(outputPath);

4
packages/content/ref/pdf-to-images/dist/types.js vendored
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@ -4,6 +4,7 @@ export const ConvertCommandArgsSchema = z.object({
input: z.string().describe('Path to the input PDF file'),
output: z.string().describe('Output path template (e.g., output/page_{PAGE}.png)').optional(),
dpi: z.number().int().positive().default(300).describe('Resolution for the output images'),
scale: z.number().positive().default(2).describe('Scaling factor to apply before rendering (e.g., 2 for 2x size)').optional(),
format: z.enum(['png', 'jpg']).default('png').describe('Output image format'),
startPage: z.number().int().positive().describe('First page to convert (1-based index)').optional(),
endPage: z.number().int().positive().describe('Last page to convert (1-based index)').optional()
@ -20,10 +21,11 @@ export const ConvertCommandSchema = ConvertCommandArgsSchema
format: data.format,
startPage: data.startPage,
endPage: data.endPage,
scale: data.scale,
};
// Keep only extra properties (like var-*)
const extras = Object.keys(data)
.filter(key => !['input', 'output', 'dpi', 'format', 'startPage', 'endPage', '_', '$0'].includes(key))
.filter(key => !['input', 'output', 'dpi', 'format', 'startPage', 'endPage', 'scale', '_', '$0'].includes(key))
.reduce((acc, key) => { acc[key] = data[key]; return acc; }, {});
return { ...known, ...extras };
})

1
packages/content/ref/pdf-to-images/src/lib/convert.ts
View File

@ -119,6 +119,7 @@ export async function runConversion(config: ConvertCommandConfig, logger: Logger
outputPathTemplate,
dpi: config.dpi,
format: config.format,
scale: config.scale,
startPage: config.startPage,
endPage: config.endPage,
logger

16
packages/content/ref/pdf-to-images/src/lib/pdf.ts
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@ -31,6 +31,7 @@ export interface PdfToImageOptions {
baseVariables: Record<string, any>;
outputPathTemplate: string;
dpi: number;
scale?: number;
format: ImageFormat;
startPage?: number;
endPage?: number;
@ -66,6 +67,12 @@ export async function convertPdfToImages(
const numPagesToProcess = end - start + 1;
logger.info(`Processing pages ${start + 1} to ${end + 1} (${numPagesToProcess} pages) of ${pageCount} total`);
// Determine the scaling matrix
const scaleValue = options.scale ?? 2;
const matrix = scaleValue === 1 ? mupdf.Matrix.identity : mupdf.Matrix.scale(scaleValue, scaleValue);
logger.info(`Using scale factor: ${scaleValue}`);
for (let i = start; i <= end; i++) {
const pageNumber = i + 1; // User-facing page number (1-based)
@ -79,15 +86,20 @@ export async function convertPdfToImages(
const outputPath = await resolveVariables(options.outputPathTemplate, false, pageVariables);
const page = doc.loadPage(i);
// Use the scaling matrix here
const pixmap = page.toPixmap(
[1, 0, 0, 1, 0, 0],
matrix,
mupdf.ColorSpace.DeviceRGB,
false
);
// Note: DPI is implicitly handled by the scaling factor now.
// The pixmap dimensions will be scaled * scaleFactor.
// We might want to remove the explicit DPI option later if it's confusing.
const imageData = options.format === 'png'
? pixmap.asPNG()
: pixmap.asJPEG(100, false);
: pixmap.asJPEG(60, false);
mkdir(dirname(outputPath));
writeFileSync(outputPath, imageDataObjectToBuffer(imageData as any))

4
packages/content/ref/pdf-to-images/src/types.ts
View File

@ -5,6 +5,7 @@ export const ConvertCommandArgsSchema = z.object({
input: z.string().describe('Path to the input PDF file'),
output: z.string().describe('Output path template (e.g., output/page_{PAGE}.png)').optional(),
dpi: z.number().int().positive().default(300).describe('Resolution for the output images'),
scale: z.number().positive().default(2).describe('Scaling factor to apply before rendering (e.g., 2 for 2x size)').optional(),
format: z.enum(['png', 'jpg']).default('png').describe('Output image format'),
startPage: z.number().int().positive().describe('First page to convert (1-based index)').optional(),
endPage: z.number().int().positive().describe('Last page to convert (1-based index)').optional()
@ -22,10 +23,11 @@ export const ConvertCommandSchema = ConvertCommandArgsSchema
format: data.format,
startPage: data.startPage,
endPage: data.endPage,
scale: data.scale,
};
// Keep only extra properties (like var-*)
const extras = Object.keys(data)
.filter(key => !['input', 'output', 'dpi', 'format', 'startPage', 'endPage', '_', '$0'].includes(key))
.filter(key => !['input', 'output', 'dpi', 'format', 'startPage', 'endPage', 'scale', '_', '$0'].includes(key))
.reduce((acc, key) => { acc[key] = data[key]; return acc; }, {} as any);
return { ...known, ...extras };