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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Add support for getcaps that probes the camera for capabilities
This commit is contained in:
Youness Alaoui
Nicolas Dufresne
parent
4856d22b9f
commit
bb83c54a87
1 changed files with 162 additions and 47 deletions
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@ -141,12 +141,160 @@ gst_ahc_src_dispose (GObject * object)
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static gint
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_compare_formats (int f1, int f2)
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{
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if (f1 == f2)
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return 0;
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/* YV12 has priority */
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if (f1 == ImageFormat_YV12)
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return -1;
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if (f2 == ImageFormat_YV12)
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return 1;
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/* Then NV21 */
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if (f1 == ImageFormat_NV21)
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return -1;
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if (f2 == ImageFormat_NV21)
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return 1;
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/* Then we don't care */
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return f2 - f1;
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}
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static gint
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_compare_sizes (GstAHCSize * s1, GstAHCSize * s2)
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{
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return ((s2->width * s2->height) - (s1->width * s1->height));
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}
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static gint
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_compare_ranges (int *r1, int *r2)
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{
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if (r1[1] == r2[1])
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/* Smallest range */
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return (r1[1] - r1[0]) - (r2[1] - r2[0]);
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else
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/* Highest fps */
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return r2[1] - r1[1];
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}
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static GstCaps *
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gst_ahc_src_getcaps (GstBaseSrc * src)
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{
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GstAHCSrc *self = GST_AHC_SRC (src);
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return gst_caps_copy (self->caps);
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if (self->camera) {
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GstCaps *ret = gst_caps_new_empty ();
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GstAHCParameters *params;
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params = gst_ah_camera_get_parameters (self->camera);
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if (params) {
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GList *formats, *sizes, *ranges;
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GList *i, *j, *k;
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int previous_format = ImageFormat_UNKNOWN;
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formats = gst_ahc_parameters_get_supported_preview_formats (params);
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formats = g_list_sort (formats, (GCompareFunc) _compare_formats);
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sizes = gst_ahc_parameters_get_supported_preview_sizes (params);
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sizes = g_list_sort (sizes, (GCompareFunc) _compare_sizes);
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ranges = gst_ahc_parameters_get_supported_preview_fps_range (params);
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ranges = g_list_sort (ranges, (GCompareFunc) _compare_ranges);
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GST_WARNING_OBJECT (self, "Supported preview formats:");
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for (i = formats; i; i = i->next) {
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int f = GPOINTER_TO_INT (i->data);
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GstStructure *format = NULL;
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/* Ignore duplicates */
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if (f == previous_format)
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continue;
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/* Can't use switch/case because the values are not constants */
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if (f == ImageFormat_NV16) {
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GST_WARNING_OBJECT (self, " NV16 (%d)", f);
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format = gst_structure_new ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '1', '6'),
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NULL);
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} else if (f == ImageFormat_NV21) {
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GST_WARNING_OBJECT (self, " NV21 (%d)", f);
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format = gst_structure_new ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '2', '1'),
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NULL);
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} else if (f == ImageFormat_RGB_565) {
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GST_WARNING_OBJECT (self, " RGB565 (%d)", f);
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format = gst_structure_new ("video/x-raw-rgb",
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"bpp", G_TYPE_INT, 16,
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"depth", G_TYPE_INT, 16,
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"red_mask", G_TYPE_INT, 0xf800,
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"green_mask", G_TYPE_INT, 0x07e0,
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"blue_mask", G_TYPE_INT, 0x001f,
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"endianness", G_TYPE_INT, G_LITTLE_ENDIAN, NULL);
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} else if (f == ImageFormat_YUY2) {
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GST_WARNING_OBJECT (self, " YUY2 (%d)", f);
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format = gst_structure_new ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
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NULL);
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} else if (f == ImageFormat_YV12) {
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GST_WARNING_OBJECT (self, " YV12 (%d)", f);
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format = gst_structure_new ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
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NULL);
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}
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previous_format = f;
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if (format) {
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for (j = sizes; j; j = j->next) {
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GstAHCSize *s = j->data;
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GstStructure *size;
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size = gst_structure_copy (format);
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gst_structure_set (size, "width", G_TYPE_INT, s->width,
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"height", G_TYPE_INT, s->height,
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"interlaced", G_TYPE_BOOLEAN, FALSE,
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"pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, NULL);
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for (k = ranges; k; k = k->next) {
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int *range = k->data;
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GstStructure *s;
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s = gst_structure_copy (size);
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if (range[0] == range[1]) {
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gst_structure_set (s, "framerate", GST_TYPE_FRACTION,
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range[0], 1000, NULL);
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} else {
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gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE,
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range[0], 1000, range[1], 1000, NULL);
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}
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gst_caps_append_structure (ret, s);
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}
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gst_structure_free (size);
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}
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gst_structure_free (format);
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}
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}
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GST_WARNING_OBJECT (self, "Supported preview sizes:");
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for (i = sizes; i; i = i->next) {
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GstAHCSize *s = i->data;
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GST_WARNING_OBJECT (self, " %dx%d", s->width, s->height);
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}
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GST_WARNING_OBJECT (self, "Supported preview fps range:");
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for (i = ranges; i; i = i->next) {
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int *range = i->data;
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GST_WARNING_OBJECT (self, " [%d, %d]", range[0], range[1]);
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}
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gst_ahc_parameters_supported_preview_formats_free (formats);
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gst_ahc_parameters_supported_preview_sizes_free (sizes);
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gst_ahc_parameters_supported_preview_fps_range_free (ranges);
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}
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gst_ahc_parameters_free (params);
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return ret;
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} else {
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return NULL;
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}
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}
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static void
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@ -281,15 +429,19 @@ gst_ahc_src_open (GstAHCSrc * self)
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self->camera = gst_ah_camera_open (0);
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if (self->camera) {
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GstAHCParameters *params;
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JNIEnv *env = gst_dvm_get_env ();
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params = gst_ah_camera_get_parameters (self->camera);
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GstAHCParameters *params;
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gint i;
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GST_WARNING_OBJECT (self, "Opened camera");
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self->texture = gst_ag_surfacetexture_new (0);
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gst_ah_camera_set_preview_texture (self->camera, self->texture);
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gst_ah_camera_set_error_callback (self->camera, gst_ahc_src_on_error, self);
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params = gst_ah_camera_get_parameters (self->camera);
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if (params) {
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GstAHCSize *size;
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int i;
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GST_WARNING_OBJECT (self, "Params : %s",
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gst_ahc_parameters_flatten (params));
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@ -309,51 +461,14 @@ gst_ahc_src_open (GstAHCSrc * self)
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gst_ag_imageformat_get_bits_per_pixel
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(gst_ahc_parameters_get_preview_format (params)) / 8;
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gst_ahc_size_free (size);
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self->texture = gst_ag_surfacetexture_new (0);
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gst_ah_camera_set_preview_texture (self->camera, self->texture);
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gst_ah_camera_set_error_callback (self->camera, gst_ahc_src_on_error,
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self);
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for (i = 0; i < NUM_CALLBACK_BUFFERS; i++) {
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jbyteArray array = (*env)->NewByteArray (env, self->buffer_size);
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gst_ah_camera_add_callback_buffer (self->camera, array);
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(*env)->DeleteLocalRef (env, array);
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}
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{
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GList *list, *i;
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list = gst_ahc_parameters_get_supported_preview_formats (params);
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GST_WARNING_OBJECT (self, "Supported preview formats:");
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for (i = list; i; i = i->next) {
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int f = GPOINTER_TO_INT (i->data);
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GST_WARNING_OBJECT (self, " %d", f);
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}
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gst_ahc_parameters_supported_preview_formats_free (list);
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list = gst_ahc_parameters_get_supported_preview_sizes (params);
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GST_WARNING_OBJECT (self, "Supported preview sizes:");
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for (i = list; i; i = i->next) {
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GstAHCSize *s = i->data;
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GST_WARNING_OBJECT (self, " %dx%d", s->width, s->height);
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}
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gst_ahc_parameters_supported_preview_sizes_free (list);
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list = gst_ahc_parameters_get_supported_preview_fps_range (params);
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GST_WARNING_OBJECT (self, "Supported preview fps range:");
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for (i = list; i; i = i->next) {
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int *range = i->data;
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GST_WARNING_OBJECT (self, " [%d, %d]", range[0], range[1]);
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}
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gst_ahc_parameters_supported_preview_fps_range_free (list);
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}
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gst_ahc_parameters_free (params);
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}
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for (i = 0; i < NUM_CALLBACK_BUFFERS; i++) {
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jbyteArray array = (*env)->NewByteArray (env, self->buffer_size);
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gst_ah_camera_add_callback_buffer (self->camera, array);
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(*env)->DeleteLocalRef (env, array);
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}
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} else {
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GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
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("Unable to open device '%d'.", 0), GST_ERROR_SYSTEM);
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