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refactoring

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This commit is contained in:
Maxim Devaev
2025-01-27 06:32:26 +02:00
parent db297db52e
commit df39b824c6
6 changed files with 67 additions and 32 deletions
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4
src/libs/capture.c
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@@ -67,13 +67,13 @@ static const struct {
{"YUYV", V4L2_PIX_FMT_YUYV},
{"YVYU", V4L2_PIX_FMT_YVYU},
{"UYVY", V4L2_PIX_FMT_UYVY},
{"YUV420", V4L2_PIX_FMT_YUV420},
{"YVU420", V4L2_PIX_FMT_YVU420},
{"RGB565", V4L2_PIX_FMT_RGB565},
{"RGB24", V4L2_PIX_FMT_RGB24},
{"BGR24", V4L2_PIX_FMT_BGR24},
{"MJPEG", V4L2_PIX_FMT_MJPEG},
{"JPEG", V4L2_PIX_FMT_JPEG},
{"YU12", V4L2_PIX_FMT_YUV420},
{"YV12", V4L2_PIX_FMT_YVU420},
};
static const struct {

2
src/libs/capture.h
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@@ -39,7 +39,7 @@
#define US_VIDEO_MAX_FPS ((uint)120)
#define US_STANDARDS_STR "PAL, NTSC, SECAM"
#define US_FORMATS_STR "YUYV, YVYU, UYVY, YU12, YV12, RGB565, RGB24, BGR24, MJPEG, JPEG"
#define US_FORMATS_STR "YUYV, YVYU, UYVY, YUV420, YVU420, RGB565, RGB24, BGR24, MJPEG, JPEG"
#define US_IO_METHODS_STR "MMAP, USERPTR"

23
src/libs/frame.c
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@@ -82,18 +82,31 @@ bool us_frame_compare(const us_frame_s *a, const us_frame_s *b) {
uint us_frame_get_padding(const us_frame_s *frame) {
uint bytes_per_pixel = 0;
switch (frame->format) {
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_YUV420: bytes_per_pixel = 1; break;
bytes_per_pixel = 1;
break;
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_RGB565: bytes_per_pixel = 2; break;
case V4L2_PIX_FMT_RGB565:
bytes_per_pixel = 2;
break;
case V4L2_PIX_FMT_BGR24:
case V4L2_PIX_FMT_RGB24: bytes_per_pixel = 3; break;
case V4L2_PIX_FMT_RGB24:
bytes_per_pixel = 3;
break;
// case V4L2_PIX_FMT_H264:
case V4L2_PIX_FMT_MJPEG:
case V4L2_PIX_FMT_JPEG: bytes_per_pixel = 0; break;
default: assert(0 && "Unknown format");
case V4L2_PIX_FMT_JPEG:
bytes_per_pixel = 0;
break;
default:
assert(0 && "Unknown format");
}
if (bytes_per_pixel > 0 && frame->stride > frame->width) {
return (frame->stride - frame->width * bytes_per_pixel);

66
src/ustreamer/encoders/cpu/encoder.c
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@@ -26,7 +26,7 @@
#include "encoder.h"
#include "../../../libs/logging.h"
typedef struct {
struct jpeg_destination_mgr mgr; // Default manager
@@ -51,7 +51,7 @@ static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg);
static void _jpeg_term_destination(j_compress_ptr jpeg);
void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality) {
void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, uint quality) {
// This function based on compress_image_to_jpeg() from mjpg-streamer
us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
@@ -72,11 +72,17 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420: jpeg.in_color_space = JCS_YCbCr; break;
case V4L2_PIX_FMT_YVU420:
jpeg.in_color_space = JCS_YCbCr;
break;
# ifdef JCS_EXTENSIONS
case V4L2_PIX_FMT_BGR24: jpeg.in_color_space = JCS_EXT_BGR; break;
case V4L2_PIX_FMT_BGR24:
jpeg.in_color_space = JCS_EXT_BGR;
break;
# endif
default: jpeg.in_color_space = JCS_RGB; break;
default:
jpeg.in_color_space = JCS_RGB;
break;
}
jpeg_set_defaults(&jpeg);
@@ -88,11 +94,23 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
// https://www.fourcc.org/yuv.php
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_UYVY: _jpeg_write_scanlines_yuv(&jpeg, src); break;
case V4L2_PIX_FMT_UYVY:
_jpeg_write_scanlines_yuv(&jpeg, src);
break;
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420: _jpeg_write_scanlines_yuv_planar(&jpeg, src); break;
case V4L2_PIX_FMT_RGB565: _jpeg_write_scanlines_rgb565(&jpeg, src); break;
case V4L2_PIX_FMT_RGB24: _jpeg_write_scanlines_rgb24(&jpeg, src); break;
case V4L2_PIX_FMT_YVU420:
_jpeg_write_scanlines_yuv_planar(&jpeg, src);
break;
case V4L2_PIX_FMT_RGB565:
_jpeg_write_scanlines_rgb565(&jpeg, src);
break;
case V4L2_PIX_FMT_RGB24:
_jpeg_write_scanlines_rgb24(&jpeg, src);
break;
case V4L2_PIX_FMT_BGR24:
# ifdef JCS_EXTENSIONS
_jpeg_write_scanlines_rgb24(&jpeg, src); // Use native JCS_EXT_BGR
@@ -129,13 +147,13 @@ static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const u
u8 *line_buf;
US_CALLOC(line_buf, frame->width * 3);
const unsigned padding = us_frame_get_padding(frame);
const uint padding = us_frame_get_padding(frame);
const u8 *data = frame->data;
while (jpeg->next_scanline < frame->height) {
u8 *ptr = line_buf;
for (unsigned x = 0; x < frame->width; ++x) {
for (uint x = 0; x < frame->width; ++x) {
// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-uyvy.html
const bool is_odd_pixel = x & 1;
u8 y, u, v;
@@ -176,21 +194,25 @@ static void _jpeg_write_scanlines_yuv_planar(struct jpeg_compress_struct *jpeg,
u8 *line_buf;
US_CALLOC(line_buf, frame->width * 3);
const unsigned padding = us_frame_get_padding(frame);
const uint padding = us_frame_get_padding(frame);
const uint image_size = frame->width * frame->height;
const uint chroma_array_size = (frame->used - image_size) / 2;
const uint chroma_matrix_order = (image_size / chroma_array_size) == 16 ? 4 : 2;
US_LOG_DEBUG("Planar data: Image Size %u, Chroma Array Size %u, Chroma Matrix Order %u", image_size, chroma_array_size, chroma_matrix_order);
const u8 *data = frame->data;
const u8 *chroma1_data = frame->data + image_size;
const u8 *chroma2_data = frame->data + image_size + chroma_array_size;
//US_LOG_DEBUG("Planar data: Image Size %u, Chroma Array Size %u, Chroma Matrix Order %u",
// image_size, chroma_array_size, chroma_matrix_order);
while (jpeg->next_scanline < frame->height) {
u8 *ptr = line_buf;
for (unsigned x = 0; x < frame->width; ++x) {
for (uint x = 0; x < frame->width; ++x) {
// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-yuv420.html
u8 y = data[x], u, v;
u8 y = data[x];
u8 u;
u8 v;
uint chroma_position = x / chroma_matrix_order;
switch (frame->format) {
@@ -215,7 +237,7 @@ static void _jpeg_write_scanlines_yuv_planar(struct jpeg_compress_struct *jpeg,
data += frame->width + padding;
if( jpeg->next_scanline > 0 && jpeg->next_scanline % chroma_matrix_order == 0 ){
if (jpeg->next_scanline > 0 && jpeg->next_scanline % chroma_matrix_order == 0) {
chroma1_data += (frame->width + padding) / chroma_matrix_order;
chroma2_data += (frame->width + padding) / chroma_matrix_order;
}
@@ -231,14 +253,14 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, cons
u8 *line_buf;
US_CALLOC(line_buf, frame->width * 3);
const unsigned padding = us_frame_get_padding(frame);
const uint padding = us_frame_get_padding(frame);
const u8 *data = frame->data;
while (jpeg->next_scanline < frame->height) {
u8 *ptr = line_buf;
for (unsigned x = 0; x < frame->width; ++x) {
const unsigned int two_byte = (data[1] << 8) + data[0];
for (uint x = 0; x < frame->width; ++x) {
const uint two_byte = (data[1] << 8) + data[0];
ptr[0] = data[1] & 248; // Red
ptr[1] = (u8)((two_byte & 2016) >> 3); // Green
@@ -257,7 +279,7 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, cons
}
static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
const unsigned padding = us_frame_get_padding(frame);
const uint padding = us_frame_get_padding(frame);
u8 *data = frame->data;
while (jpeg->next_scanline < frame->height) {
@@ -273,14 +295,14 @@ static void _jpeg_write_scanlines_bgr24(struct jpeg_compress_struct *jpeg, const
u8 *line_buf;
US_CALLOC(line_buf, frame->width * 3);
const unsigned padding = us_frame_get_padding(frame);
const uint padding = us_frame_get_padding(frame);
u8 *data = frame->data;
while (jpeg->next_scanline < frame->height) {
u8 *ptr = line_buf;
// swap B and R values
for (unsigned x = 0; x < frame->width * 3; x += 3) {
for (uint x = 0; x < frame->width * 3; x += 3) {
ptr[0] = data[x + 2];
ptr[1] = data[x + 1];
ptr[2] = data[x];

2
src/ustreamer/encoders/cpu/encoder.h
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@@ -35,4 +35,4 @@
#include "../../../libs/frame.h"
void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality);
void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, uint quality);