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Framebased format is set to H264 by default, which can be updated to other formats by updating the GUID through guid configfs attribute. Signed-off-by: Akash Kumar --- drivers/usb/gadget/function/uvc_configfs.c | 570 ++++++++++++++++++--- drivers/usb/gadget/function/uvc_configfs.h | 34 +- drivers/usb/gadget/function/uvc_v4l2.c | 80 ++- include/uapi/linux/usb/video.h | 62 +++ 4 files changed, 638 insertions(+), 108 deletions(-) diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c index 6fac696ea846..af292717b506 100644 --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -1571,6 +1571,7 @@ static const struct uvcg_config_group_type uvcg_control_grp_type = { static const char * const uvcg_format_names[] = { "uncompressed", "mjpeg", + "h264", }; static struct uvcg_color_matching * @@ -1776,6 +1777,8 @@ static int uvcg_streaming_header_allow_link(struct config_item *src, target_fmt = container_of(to_config_group(target), struct uvcg_format, group); + if (!target_fmt) + goto out; uvcg_format_set_indices(to_config_group(target)); @@ -1815,6 +1818,8 @@ static void uvcg_streaming_header_drop_link(struct config_item *src, mutex_lock(&opts->lock); target_fmt = container_of(to_config_group(target), struct uvcg_format, group); + if (!target_fmt) + goto out; list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) if (format_ptr->fmt == target_fmt) { @@ -1825,7 +1830,7 @@ static void uvcg_streaming_header_drop_link(struct config_item *src, } --target_fmt->linked; - +out: mutex_unlock(&opts->lock); mutex_unlock(su_mutex); } @@ -1921,8 +1926,8 @@ static const struct uvcg_config_group_type uvcg_streaming_header_grp_type = { * streaming/// */ -#define UVCG_FRAME_ATTR(cname, aname, bits) \ -static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\ +#define UVCG_FRAME_ATTR(cname, fname, bits) \ +static ssize_t uvcg_frame_##fname##_##cname##_show(struct config_item *item, char *page)\ { \ struct uvcg_frame *f = to_uvcg_frame(item); \ struct f_uvc_opts *opts; \ @@ -1936,14 +1941,14 @@ static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\ opts = to_f_uvc_opts(opts_item); \ \ mutex_lock(&opts->lock); \ - result = sprintf(page, "%u\n", f->frame.cname); \ + result = scnprintf(page, PAGE_SIZE, "%u\n", f->frame.fname.cname);\ mutex_unlock(&opts->lock); \ \ mutex_unlock(su_mutex); \ return result; \ } \ \ -static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \ +static ssize_t uvcg_frame_##fname##_##cname##_store(struct config_item *item, \ const char *page, size_t len)\ { \ struct uvcg_frame *f = to_uvcg_frame(item); \ @@ -1951,7 +1956,7 @@ static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \ struct config_item *opts_item; \ struct uvcg_format *fmt; \ struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ - typeof(f->frame.cname) num; \ + typeof(f->frame.fname.cname) num; \ int ret; \ \ ret = kstrtou##bits(page, 0, &num); \ @@ -1970,7 +1975,7 @@ static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \ goto end; \ } \ \ - f->frame.cname = num; \ + f->frame.fname.cname = num; \ ret = len; \ end: \ mutex_unlock(&opts->lock); \ @@ -1978,7 +1983,7 @@ end: \ return ret; \ } \ \ -UVC_ATTR(uvcg_frame_, cname, aname); +UVC_ATTR(uvcg_frame_, fname##_##cname, cname); static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item, char *page) @@ -1990,6 +1995,7 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item, struct config_item *fmt_item; struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex; int result; + u8 frame_index = 0; mutex_lock(su_mutex); /* for navigating configfs hierarchy */ @@ -2005,7 +2011,13 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item, opts = to_f_uvc_opts(opts_item); mutex_lock(&opts->lock); - result = sprintf(page, "%u\n", f->frame.b_frame_index); + if (f->fmt_type == UVCG_UNCOMPRESSED) + frame_index = f->frame.uf.bFrameIndex; + else if (f->fmt_type == UVCG_MJPEG) + frame_index = f->frame.mf.bFrameIndex; + else if (f->fmt_type == UVCG_H264) + frame_index = f->frame.hf.bFrameIndex; + result = scnprintf(page, PAGE_SIZE, "%u\n", frame_index); mutex_unlock(&opts->lock); out: @@ -2015,13 +2027,32 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item, UVC_ATTR_RO(uvcg_frame_, b_frame_index, bFrameIndex); -UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, 8); -UVCG_FRAME_ATTR(w_width, wWidth, 16); -UVCG_FRAME_ATTR(w_height, wHeight, 16); -UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, 32); -UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, 32); -UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, 32); -UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, 32); +/* Declare configurable frame attributes for uncompressed format */ +UVCG_FRAME_ATTR(bmCapabilities, uf, 8); +UVCG_FRAME_ATTR(wWidth, uf, 16); +UVCG_FRAME_ATTR(wHeight, uf, 16); +UVCG_FRAME_ATTR(dwMinBitRate, uf, 32); +UVCG_FRAME_ATTR(dwMaxBitRate, uf, 32); +UVCG_FRAME_ATTR(dwMaxVideoFrameBufferSize, uf, 32); +UVCG_FRAME_ATTR(dwDefaultFrameInterval, uf, 32); + +/* Declare configurable frame attributes for mjpeg format */ +UVCG_FRAME_ATTR(bmCapabilities, mf, 8); +UVCG_FRAME_ATTR(wWidth, mf, 16); +UVCG_FRAME_ATTR(wHeight, mf, 16); +UVCG_FRAME_ATTR(dwMinBitRate, mf, 32); +UVCG_FRAME_ATTR(dwMaxBitRate, mf, 32); +UVCG_FRAME_ATTR(dwMaxVideoFrameBufferSize, mf, 32); +UVCG_FRAME_ATTR(dwDefaultFrameInterval, mf, 32); + +/* Declare configurable frame attributes for h264 format */ +UVCG_FRAME_ATTR(bmCapabilities, hf, 8); +UVCG_FRAME_ATTR(wWidth, hf, 16); +UVCG_FRAME_ATTR(wHeight, hf, 16); +UVCG_FRAME_ATTR(dwMinBitRate, hf, 32); +UVCG_FRAME_ATTR(dwMaxBitRate, hf, 32); +UVCG_FRAME_ATTR(dwDefaultFrameInterval, hf, 32); +UVCG_FRAME_ATTR(dwBytesPerLine, hf, 32); #undef UVCG_FRAME_ATTR @@ -2032,7 +2063,7 @@ static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item, struct f_uvc_opts *opts; struct config_item *opts_item; struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex; - int result, i; + int result, i, n; char *pg = page; mutex_lock(su_mutex); /* for navigating configfs hierarchy */ @@ -2041,7 +2072,15 @@ static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item, opts = to_f_uvc_opts(opts_item); mutex_lock(&opts->lock); - for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) { + n = 0; + if (frm->fmt_type == UVCG_UNCOMPRESSED) + n = frm->frame.uf.bFrameIntervalType; + else if (frm->fmt_type == UVCG_MJPEG) + n = frm->frame.mf.bFrameIntervalType; + else if (frm->fmt_type == UVCG_H264) + n = frm->frame.hf.bNumFrameIntervals; + + for (result = 0, i = 0; i < n; ++i) { result += sprintf(pg, "%u\n", frm->dw_frame_interval[i]); pg = page + result; } @@ -2092,7 +2131,13 @@ static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item, kfree(ch->dw_frame_interval); ch->dw_frame_interval = frm_intrv; - ch->frame.b_frame_interval_type = n; + if (ch->fmt_type == UVCG_UNCOMPRESSED) + ch->frame.uf.bFrameIntervalType = n; + else if (ch->fmt_type == UVCG_MJPEG) + ch->frame.mf.bFrameIntervalType = n; + else if (ch->fmt_type == UVCG_H264) + ch->frame.hf.bNumFrameIntervals = n; + sort(ch->dw_frame_interval, n, sizeof(*ch->dw_frame_interval), uvcg_config_compare_u32, NULL); ret = len; @@ -2105,22 +2150,57 @@ static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item, UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval); -static struct configfs_attribute *uvcg_frame_attrs[] = { +static struct configfs_attribute *uvcg_uncompressed_frame_attrs[] = { &uvcg_frame_attr_b_frame_index, - &uvcg_frame_attr_bm_capabilities, - &uvcg_frame_attr_w_width, - &uvcg_frame_attr_w_height, - &uvcg_frame_attr_dw_min_bit_rate, - &uvcg_frame_attr_dw_max_bit_rate, - &uvcg_frame_attr_dw_max_video_frame_buffer_size, - &uvcg_frame_attr_dw_default_frame_interval, + &uvcg_frame_attr_uf_bmCapabilities, + &uvcg_frame_attr_uf_wWidth, + &uvcg_frame_attr_uf_wHeight, + &uvcg_frame_attr_uf_dwMinBitRate, + &uvcg_frame_attr_uf_dwMaxBitRate, + &uvcg_frame_attr_uf_dwMaxVideoFrameBufferSize, + &uvcg_frame_attr_uf_dwDefaultFrameInterval, &uvcg_frame_attr_dw_frame_interval, NULL, }; -static const struct config_item_type uvcg_frame_type = { - .ct_item_ops = &uvcg_config_item_ops, - .ct_attrs = uvcg_frame_attrs, +static struct configfs_attribute *uvcg_mjpeg_frame_attrs[] = { + &uvcg_frame_attr_b_frame_index, + &uvcg_frame_attr_mf_bmCapabilities, + &uvcg_frame_attr_mf_wWidth, + &uvcg_frame_attr_mf_wHeight, + &uvcg_frame_attr_mf_dwMinBitRate, + &uvcg_frame_attr_mf_dwMaxBitRate, + &uvcg_frame_attr_mf_dwMaxVideoFrameBufferSize, + &uvcg_frame_attr_mf_dwDefaultFrameInterval, + &uvcg_frame_attr_dw_frame_interval, + NULL, +}; + +static struct configfs_attribute *uvcg_h264_frame_attrs[] = { + &uvcg_frame_attr_b_frame_index, + &uvcg_frame_attr_hf_bmCapabilities, + &uvcg_frame_attr_hf_wWidth, + &uvcg_frame_attr_hf_wHeight, + &uvcg_frame_attr_hf_dwMinBitRate, + &uvcg_frame_attr_hf_dwMaxBitRate, + &uvcg_frame_attr_hf_dwDefaultFrameInterval, + &uvcg_frame_attr_dw_frame_interval, + &uvcg_frame_attr_hf_dwBytesPerLine, + NULL, +}; + +static struct config_item_type uvcg_uncompressed_frame_type = { + .ct_attrs = uvcg_uncompressed_frame_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item_type uvcg_mjpeg_frame_type = { + .ct_attrs = uvcg_mjpeg_frame_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item_type uvcg_h264_frame_type = { + .ct_attrs = uvcg_h264_frame_attrs, .ct_owner = THIS_MODULE, }; @@ -2131,20 +2211,17 @@ static struct config_item *uvcg_frame_make(struct config_group *group, struct uvcg_format *fmt; struct f_uvc_opts *opts; struct config_item *opts_item; - struct uvcg_frame_ptr *frame_ptr; + struct config_item_type *uvcg_frame_config_item; + struct uvc_frame_uncompressed *uf; h = kzalloc(sizeof(*h), GFP_KERNEL); if (!h) return ERR_PTR(-ENOMEM); - h->frame.b_descriptor_type = USB_DT_CS_INTERFACE; - h->frame.b_frame_index = 1; - h->frame.w_width = 640; - h->frame.w_height = 360; - h->frame.dw_min_bit_rate = 18432000; - h->frame.dw_max_bit_rate = 55296000; - h->frame.dw_max_video_frame_buffer_size = 460800; - h->frame.dw_default_frame_interval = 666666; + uf = &h->frame.uf; + + uf->bDescriptorType = USB_DT_CS_INTERFACE; + uf->bFrameIndex = 1; opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; opts = to_f_uvc_opts(opts_item); @@ -2152,30 +2229,55 @@ static struct config_item *uvcg_frame_make(struct config_group *group, mutex_lock(&opts->lock); fmt = to_uvcg_format(&group->cg_item); if (fmt->type == UVCG_UNCOMPRESSED) { - h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED; + uf->bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED; + uf->wWidth = cpu_to_le16(640); + uf->wHeight = cpu_to_le16(360); + uf->dwMinBitRate = cpu_to_le32(18432000); + uf->dwMaxBitRate = cpu_to_le32(55296000); + uf->dwMaxVideoFrameBufferSize = cpu_to_le32(460800); + uf->dwDefaultFrameInterval = cpu_to_le32(666666); + h->fmt_type = UVCG_UNCOMPRESSED; + uvcg_frame_config_item = &uvcg_uncompressed_frame_type; } else if (fmt->type == UVCG_MJPEG) { - h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; + struct uvc_frame_mjpeg *mf = &h->frame.mf; + + mf->bDescriptorType = USB_DT_CS_INTERFACE; + mf->bFrameIndex = 1; + mf->bDescriptorSubType = UVC_VS_FRAME_MJPEG; + mf->wWidth = cpu_to_le16(640); + mf->wHeight = cpu_to_le16(360); + mf->dwMinBitRate = cpu_to_le32(18432000); + mf->dwMaxBitRate = cpu_to_le32(55296000); + mf->dwMaxVideoFrameBufferSize = cpu_to_le32(460800); + mf->dwDefaultFrameInterval = cpu_to_le32(666666); + h->fmt_type = UVCG_MJPEG; + uvcg_frame_config_item = &uvcg_mjpeg_frame_type; + } else if (fmt->type == UVCG_H264) { + struct uvc_frame_h264 *hf = &h->frame.hf; + + hf->bDescriptorSubType = UVC_VS_FRAME_FRAME_BASED; + hf->wWidth = cpu_to_le16(1920); + hf->wHeight = cpu_to_le16(1080); + hf->dwMinBitRate = cpu_to_le32(29491200); + hf->dwMaxBitRate = cpu_to_le32(100000000); + hf->dwDefaultFrameInterval = cpu_to_le32(333667); + hf->bmCapabilities = 0x00; + hf->dwBytesPerLine = 0; + + h->fmt_type = UVCG_H264; + uvcg_frame_config_item = &uvcg_h264_frame_type; } else { mutex_unlock(&opts->lock); kfree(h); return ERR_PTR(-EINVAL); } - frame_ptr = kzalloc(sizeof(*frame_ptr), GFP_KERNEL); - if (!frame_ptr) { - mutex_unlock(&opts->lock); - kfree(h); - return ERR_PTR(-ENOMEM); - } - - frame_ptr->frm = h; - list_add_tail(&frame_ptr->entry, &fmt->frames); ++fmt->num_frames; mutex_unlock(&opts->lock); - config_item_init_type_name(&h->item, name, &uvcg_frame_type); + config_item_init_type_name(&h->item, name, uvcg_frame_config_item); return &h->item; } @@ -2185,23 +2287,14 @@ static void uvcg_frame_drop(struct config_group *group, struct config_item *item struct uvcg_format *fmt; struct f_uvc_opts *opts; struct config_item *opts_item; - struct uvcg_frame *target_frm = NULL; - struct uvcg_frame_ptr *frame_ptr, *tmp; opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; opts = to_f_uvc_opts(opts_item); mutex_lock(&opts->lock); - target_frm = container_of(item, struct uvcg_frame, item); fmt = to_uvcg_format(&group->cg_item); - list_for_each_entry_safe(frame_ptr, tmp, &fmt->frames, entry) - if (frame_ptr->frm == target_frm) { - list_del(&frame_ptr->entry); - kfree(frame_ptr); - --fmt->num_frames; - break; - } + --fmt->num_frames; mutex_unlock(&opts->lock); config_item_put(item); @@ -2215,11 +2308,20 @@ static void uvcg_format_set_indices(struct config_group *fmt) list_for_each_entry(ci, &fmt->cg_children, ci_entry) { struct uvcg_frame *frm; - if (ci->ci_type != &uvcg_frame_type) + if ((ci->ci_type != &uvcg_uncompressed_frame_type) || + (ci->ci_type != &uvcg_mjpeg_frame_type) || + (ci->ci_type != &uvcg_h264_frame_type)) continue; frm = to_uvcg_frame(ci); - frm->frame.b_frame_index = i++; + if (frm->fmt_type == UVCG_UNCOMPRESSED) + frm->frame.uf.bFrameIndex = i; + else if (frm->fmt_type == UVCG_MJPEG) + frm->frame.mf.bFrameIndex = i; + else if (frm->fmt_type == UVCG_H264) + frm->frame.hf.bFrameIndex = i; + + i++; } } @@ -2464,7 +2566,6 @@ static struct config_group *uvcg_uncompressed_make(struct config_group *group, h->desc.bmInterlaceFlags = 0; h->desc.bCopyProtect = 0; - INIT_LIST_HEAD(&h->fmt.frames); h->fmt.type = UVCG_UNCOMPRESSED; h->fmt.color_matching = color_match; color_match->refcnt++; @@ -2654,7 +2755,6 @@ static struct config_group *uvcg_mjpeg_make(struct config_group *group, h->desc.bmInterlaceFlags = 0; h->desc.bCopyProtect = 0; - INIT_LIST_HEAD(&h->fmt.frames); h->fmt.type = UVCG_MJPEG; h->fmt.color_matching = color_match; color_match->refcnt++; @@ -2677,6 +2777,263 @@ static const struct uvcg_config_group_type uvcg_mjpeg_grp_type = { .name = "mjpeg", }; +/* ----------------------------------------------------------------------------- + * streaming/h264/ + */ + +struct uvcg_h264 { + struct uvcg_format fmt; + struct uvc_format_h264 desc; +}; + +static struct uvcg_h264 *to_uvcg_h264(struct config_item *item) +{ + return container_of( + container_of(to_config_group(item), struct uvcg_format, group), + struct uvcg_h264, fmt); +} + +static struct configfs_group_operations uvcg_h264_group_ops = { + .make_item = uvcg_frame_make, + .drop_item = uvcg_frame_drop, +}; + +#define UVCG_H264_ATTR_RO(cname, aname, bits) \ +static ssize_t uvcg_h264_##cname##_show(struct config_item *item, char *page)\ +{ \ + struct uvcg_h264 *u = to_uvcg_h264(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = scnprintf(page, PAGE_SIZE, "%u\n", \ + le##bits##_to_cpu(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +UVC_ATTR_RO(uvcg_h264_, cname, aname) + +#define UVCG_H264_ATTR(cname, aname, bits) \ +static ssize_t uvcg_h264_##cname##_show(struct config_item *item, char *page)\ +{ \ + struct uvcg_h264 *u = to_uvcg_h264(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = scnprintf(page, PAGE_SIZE, "%u\n", \ + le##bits##_to_cpu(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t \ +uvcg_h264_##cname##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct uvcg_h264 *u = to_uvcg_h264(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int ret; \ + u8 num; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + if (u->fmt.linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = kstrtou8(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > 255) { \ + ret = -EINVAL; \ + goto end; \ + } \ + u->desc.aname = num; \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +UVC_ATTR(uvcg_h264_, cname, aname) + +UVCG_H264_ATTR_RO(b_format_index, bFormatIndex, 8); +UVCG_H264_ATTR_RO(b_bits_per_pixel, bBitsPerPixel, 8); +UVCG_H264_ATTR(b_default_frame_index, bDefaultFrameIndex, 8); +UVCG_H264_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, 8); +UVCG_H264_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, 8); +UVCG_H264_ATTR_RO(bm_interface_flags, bmInterfaceFlags, 8); + +#undef UVCG_H264_ATTR +#undef UVCG_H264_ATTR_RO + +static ssize_t uvcg_h264_guid_format_show(struct config_item *item, + char *page) +{ + struct uvcg_h264 *u = to_uvcg_h264(item); + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + memcpy(page, u->desc.guidFormat, sizeof(u->desc.guidFormat)); + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + + return sizeof(u->desc.guidFormat); +} + +static ssize_t uvcg_h264_guid_format_store(struct config_item *item, + const char *page, size_t len) +{ + struct uvcg_h264 *u = to_uvcg_h264(item); + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; + int ret; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + if (u->fmt.linked || opts->refcnt) { + ret = -EBUSY; + goto end; + } + + memcpy(u->desc.guidFormat, page, + min(sizeof(u->desc.guidFormat), len)); + ret = sizeof(u->desc.guidFormat); + +end: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +UVC_ATTR(uvcg_h264_, guid_format, guidFormat); + +static inline ssize_t +uvcg_h264_bma_controls_show(struct config_item *item, char *page) +{ + struct uvcg_h264 *u = to_uvcg_h264(item); + + return uvcg_format_bma_controls_show(&u->fmt, page); +} + +static inline ssize_t +uvcg_h264_bma_controls_store(struct config_item *item, + const char *page, size_t len) +{ + struct uvcg_h264 *u = to_uvcg_h264(item); + + return uvcg_format_bma_controls_store(&u->fmt, page, len); +} + +UVC_ATTR(uvcg_h264_, bma_controls, bmaControls); + +static struct configfs_attribute *uvcg_h264_attrs[] = { + &uvcg_h264_attr_b_format_index, + &uvcg_h264_attr_b_default_frame_index, + &uvcg_h264_attr_b_bits_per_pixel, + &uvcg_h264_attr_b_aspect_ratio_x, + &uvcg_h264_attr_b_aspect_ratio_y, + &uvcg_h264_attr_bm_interface_flags, + &uvcg_h264_attr_bma_controls, + &uvcg_h264_attr_guid_format, + NULL, +}; + +static struct config_item_type uvcg_h264_type = { + .ct_item_ops = &uvcg_config_item_ops, + .ct_group_ops = &uvcg_h264_group_ops, + .ct_attrs = uvcg_h264_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_h264_make(struct config_group *group, + const char *name) +{ + struct uvcg_h264 *h; + static char guid[] = { /*Declear frame framebased as H264*/ + 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + }; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->desc.bLength = UVC_DT_FORMAT_FRAMEBASED_SIZE; + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VS_FORMAT_FRAME_BASED; + memcpy(h->desc.guidFormat, guid, sizeof(guid)); + h->desc.bBitsPerPixel = 16; + h->desc.bDefaultFrameIndex = 1; + h->desc.bAspectRatioX = 0; + h->desc.bAspectRatioY = 0; + h->desc.bmInterfaceFlags = 0; + h->desc.bCopyProtect = 0; + h->desc.bVariableSize = 1; + + h->fmt.type = UVCG_H264; + config_group_init_type_name(&h->fmt.group, name, + &uvcg_h264_type); + + return &h->fmt.group; +} + +static struct configfs_group_operations uvcg_h264_grp_ops = { + .make_group = uvcg_h264_make, +}; + +static const struct uvcg_config_group_type uvcg_h264_grp_type = { + .type = { + .ct_item_ops = &uvcg_config_item_ops, + .ct_group_ops = &uvcg_h264_grp_ops, + .ct_owner = THIS_MODULE, + }, + .name = "h264", +}; + + /* ----------------------------------------------------------------------------- * streaming/color_matching/default */ @@ -2912,6 +3269,7 @@ static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h, if (ret) return ret; grp = &f->fmt->group; + j = 0; list_for_each_entry(item, &grp->cg_children, ci_entry) { frm = to_uvcg_frame(item); ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); @@ -2965,6 +3323,11 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, container_of(fmt, struct uvcg_mjpeg, fmt); *size += sizeof(m->desc); + } else if (fmt->type == UVCG_H264) { + struct uvcg_h264 *h = + container_of(fmt, struct uvcg_h264, fmt); + + *size += sizeof(h->desc); } else { return -EINVAL; } @@ -2972,10 +3335,23 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, break; case UVCG_FRAME: { struct uvcg_frame *frm = priv1; - int sz = sizeof(frm->dw_frame_interval); - *size += sizeof(frm->frame); - *size += frm->frame.b_frame_interval_type * sz; + if (frm->fmt_type == UVCG_UNCOMPRESSED) { + struct uvc_frame_uncompressed uf = + frm->frame.uf; + *size += + UVC_DT_FRAME_UNCOMPRESSED_SIZE(uf.bFrameIntervalType); + } else if (frm->fmt_type == UVCG_MJPEG) { + struct uvc_frame_mjpeg mf = + frm->frame.mf; + *size += + UVC_DT_FRAME_MJPEG_SIZE(mf.bFrameIntervalType); + } else if (frm->fmt_type == UVCG_H264) { + struct uvc_frame_h264 hf = + frm->frame.hf; + *size += + UVC_DT_FRAME_H264_SIZE(hf.bNumFrameIntervals); + } } break; case UVCG_COLOR_MATCHING: { @@ -3045,6 +3421,14 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, m->desc.bNumFrameDescriptors = fmt->num_frames; memcpy(*dest, &m->desc, sizeof(m->desc)); *dest += sizeof(m->desc); + } else if (fmt->type == UVCG_H264) { + struct uvcg_h264 *h = + container_of(fmt, struct uvcg_h264, fmt); + + h->desc.bFormatIndex = n + 1; + h->desc.bNumFrameDescriptors = fmt->num_frames; + memcpy(*dest, &h->desc, sizeof(h->desc)); + *dest += sizeof(h->desc); } else { return -EINVAL; } @@ -3052,21 +3436,46 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, break; case UVCG_FRAME: { struct uvcg_frame *frm = priv1; - struct uvc_descriptor_header *h = *dest; - sz = sizeof(frm->frame); - memcpy(*dest, &frm->frame, sz); - *dest += sz; - sz = frm->frame.b_frame_interval_type * - sizeof(*frm->dw_frame_interval); + if (frm->fmt_type == UVCG_UNCOMPRESSED) { + struct uvc_frame_uncompressed *uf = + &frm->frame.uf; + uf->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( + uf->bFrameIntervalType); + uf->bFrameIndex = n+1; + sz = UVC_DT_FRAME_UNCOMPRESSED_SIZE(0); + memcpy(*dest, uf, sz); + *dest += sz; + sz = uf->bFrameIntervalType * + sizeof(*frm->dw_frame_interval); + } else if (frm->fmt_type == UVCG_MJPEG) { + struct uvc_frame_mjpeg *mf = + &frm->frame.mf; + mf->bLength = UVC_DT_FRAME_MJPEG_SIZE( + mf->bFrameIntervalType); + mf->bFrameIndex = n+1; + sz = UVC_DT_FRAME_MJPEG_SIZE(0); + memcpy(*dest, mf, sz); + *dest += sz; + sz = mf->bFrameIntervalType * + sizeof(*frm->dw_frame_interval); + } else if (frm->fmt_type == UVCG_H264) { + struct uvc_frame_h264 *hf = + &frm->frame.hf; + hf->bLength = UVC_DT_FRAME_H264_SIZE( + hf->bNumFrameIntervals); + hf->bFrameIndex = n+1; + sz = UVC_DT_FRAME_H264_SIZE(0); + memcpy(*dest, hf, sz); + *dest += sz; + sz = hf->bNumFrameIntervals * + sizeof(*frm->dw_frame_interval); + } else { + return -EINVAL; + } + memcpy(*dest, frm->dw_frame_interval, sz); *dest += sz; - if (frm->fmt_type == UVCG_UNCOMPRESSED) - h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( - frm->frame.b_frame_interval_type); - else if (frm->fmt_type == UVCG_MJPEG) - h->bLength = UVC_DT_FRAME_MJPEG_SIZE( - frm->frame.b_frame_interval_type); } break; case UVCG_COLOR_MATCHING: { @@ -3285,6 +3694,7 @@ static const struct uvcg_config_group_type uvcg_streaming_grp_type = { &uvcg_streaming_header_grp_type, &uvcg_uncompressed_grp_type, &uvcg_mjpeg_grp_type, + &uvcg_h264_grp_type, &uvcg_color_matching_grp_type, &uvcg_streaming_class_grp_type, NULL, diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h index c6a690158138..31d01a79dbac 100644 --- a/drivers/usb/gadget/function/uvc_configfs.h +++ b/drivers/usb/gadget/function/uvc_configfs.h @@ -49,6 +49,7 @@ container_of(group_ptr, struct uvcg_color_matching, group) enum uvcg_format_type { UVCG_UNCOMPRESSED = 0, UVCG_MJPEG, + UVCG_H264, }; struct uvcg_format { @@ -92,20 +93,11 @@ struct uvcg_frame_ptr { struct uvcg_frame { struct config_item item; enum uvcg_format_type fmt_type; - struct { - u8 b_length; - u8 b_descriptor_type; - u8 b_descriptor_subtype; - u8 b_frame_index; - u8 bm_capabilities; - u16 w_width; - u16 w_height; - u32 dw_min_bit_rate; - u32 dw_max_bit_rate; - u32 dw_max_video_frame_buffer_size; - u32 dw_default_frame_interval; - u8 b_frame_interval_type; - } __attribute__((packed)) frame; + union { + struct uvc_frame_uncompressed uf; + struct uvc_frame_mjpeg mf; + struct uvc_frame_h264 hf; + } frame; u32 *dw_frame_interval; }; @@ -142,6 +134,20 @@ static inline struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) return container_of(to_uvcg_format(item), struct uvcg_mjpeg, fmt); } +/* ----------------------------------------------------------------------------- + * streaming/framebased/ + */ + +struct uvcg_framebased { + struct uvcg_format fmt; + struct uvc_format_h264 desc; +}; + +static inline struct uvcg_framebased *to_uvcg_framebased(struct config_item *item) +{ + return container_of(to_uvcg_format(item), struct uvcg_framebased, fmt); +} + /* ----------------------------------------------------------------------------- * control/extensions/ */ diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c index a024aecb76dc..d9355be6cd34 100644 --- a/drivers/usb/gadget/function/uvc_v4l2.c +++ b/drivers/usb/gadget/function/uvc_v4l2.c @@ -31,14 +31,23 @@ static const struct uvc_format_desc *to_uvc_format(struct uvcg_format *uformat) { char guid[16] = UVC_GUID_FORMAT_MJPEG; const struct uvc_format_desc *format; - struct uvcg_uncompressed *unc; if (uformat->type == UVCG_UNCOMPRESSED) { + struct uvcg_uncompressed *unc; + unc = to_uvcg_uncompressed(&uformat->group.cg_item); if (!unc) return ERR_PTR(-EINVAL); memcpy(guid, unc->desc.guidFormat, sizeof(guid)); + } else if (uformat->type == UVCG_H264) { + struct uvcg_framebased *fb; + + fb = to_uvcg_framebased(&uformat->group.cg_item); + if (!fb) + return ERR_PTR(-EINVAL); + + memcpy(guid, fb->desc.guidFormat, sizeof(guid)); } format = uvc_format_by_guid(guid); @@ -58,19 +67,23 @@ static int uvc_v4l2_get_bytesperline(struct uvcg_format *uformat, if (!u) return 0; - return u->desc.bBitsPerPixel * uframe->frame.w_width / 8; + return u->desc.bBitsPerPixel * uframe->frame.uf.wWidth / 8; } return 0; } static int uvc_get_frame_size(struct uvcg_format *uformat, - struct uvcg_frame *uframe) + struct uvcg_frame *uframe) { unsigned int bpl = uvc_v4l2_get_bytesperline(uformat, uframe); - return bpl ? bpl * uframe->frame.w_height : - uframe->frame.dw_max_video_frame_buffer_size; + if (uformat->type == UVCG_MJPEG) + return uframe->frame.mf.dwMaxVideoFrameBufferSize; + else if (uformat->type == UVCG_H264) + return uframe->frame.hf.wWidth * uframe->frame.hf.wHeight; + + return bpl ? bpl * uframe->frame.uf.wHeight : 0; } static struct uvcg_format *find_format_by_index(struct uvc_device *uvc, int index) @@ -95,16 +108,37 @@ static struct uvcg_frame *find_frame_by_index(struct uvc_device *uvc, int index) { struct uvcg_format_ptr *format; - struct uvcg_frame_ptr *frame; + struct uvcg_frame *frame; struct uvcg_frame *uframe = NULL; + struct config_group *grp; + struct config_item *item; + list_for_each_entry(format, &uvc->header->formats, entry) { if (format->fmt->type != uformat->type) continue; - list_for_each_entry(frame, &format->fmt->frames, entry) { - if (index == frame->frm->frame.b_frame_index) { - uframe = frame->frm; - break; + + grp = &format->fmt->group; + list_for_each_entry(item, &grp->cg_children, ci_entry) { + frame = to_uvcg_frame(item); + switch (frm->fmt_type) { + case UVCG_UNCOMPRESSED: + if (index == frame->frame.uf.bFrameIndex) { + uframe = frame->frame; + break; + } + case UVCG_MJPEG: + if (index == frame->frame.mf.bFrameIndex) { + uframe = frame->frame; + break; + } + case UVCG_H264: + if (index == frame->frame.hf.bFrameIndex) { + uframe = frame->frame; + break; + } + default: + continue; } } } @@ -136,8 +170,10 @@ static struct uvcg_frame *find_closest_frame_by_size(struct uvc_device *uvc, { struct uvc_video *video = &uvc->video; struct uvcg_format_ptr *format; - struct uvcg_frame_ptr *frame; + struct uvcg_frame *frame; struct uvcg_frame *uframe = NULL; + struct config_group *grp; + struct config_item *item; unsigned int d, maxd; /* Find the closest image size. The distance between image sizes is @@ -150,11 +186,27 @@ static struct uvcg_frame *find_closest_frame_by_size(struct uvc_device *uvc, if (format->fmt->type != uformat->type) continue; - list_for_each_entry(frame, &format->fmt->frames, entry) { + grp = &format->fmt->group; + list_for_each_entry(item, &grp->cg_children, ci_entry) { u16 w, h; - w = frame->frm->frame.w_width; - h = frame->frm->frame.w_height; + frame = to_uvcg_frame(item); + switch (frame->fmt_type) { + case UVCG_UNCOMPRESSED: + w = frame->frame.uf.wWidth; + h = frame->frame.uf.wHeight; + break; + case UVCG_MJPEG: + w = frame->frame.mf.wWidth; + h = frame->frame.mf.wHeight; + break; + case UVCG_H264: + w = frame->frame.hf.wWidth; + h = frame->frame.hf.wHeight; + break; + default: + continue; + } d = min(w, rw) * min(h, rh); d = w*h + rw*rh - 2*d; diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h index 2ff0e8a3a683..3d77703063c7 100644 --- a/include/uapi/linux/usb/video.h +++ b/include/uapi/linux/usb/video.h @@ -55,6 +55,8 @@ #define UVC_VS_FORMAT_FRAME_BASED 0x10 #define UVC_VS_FRAME_FRAME_BASED 0x11 #define UVC_VS_FORMAT_STREAM_BASED 0x12 +#define UVC_VS_FORMAT_H264 0x13 +#define UVC_VS_FRAME_H264 0x14 /* A.7. Video Class-Specific Endpoint Descriptor Subtypes */ #define UVC_EP_UNDEFINED 0x00 @@ -597,5 +599,65 @@ struct UVC_FRAME_MJPEG(n) { \ __le32 dwFrameInterval[n]; \ } __attribute__ ((packed)) +/* H264 Payload - 3.1.1. H264 Video Format Descriptor */ +struct uvc_format_h264 { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFormatIndex; + __u8 bNumFrameDescriptors; + __u8 guidFormat[16]; + __u8 bBitsPerPixel; + __u8 bDefaultFrameIndex; + __u8 bAspectRatioX; + __u8 bAspectRatioY; + __u8 bmInterfaceFlags; + __u8 bCopyProtect; + __u8 bVariableSize; +} __attribute__((__packed__)); + +#define UVC_DT_FORMAT_H264_SIZE 52 +#define UVC_DT_FORMAT_FRAMEBASED_SIZE 28 + +/* H264 Payload - 3.1.2. H264 Video Frame Descriptor */ +struct uvc_frame_h264 { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + __u8 bFrameIndex; + __u8 bmCapabilities; + __u16 wWidth; + __u16 wHeight; + __u32 dwMinBitRate; + __u32 dwMaxBitRate; + __u32 dwDefaultFrameInterval; + __u8 bNumFrameIntervals; + __u32 dwBytesPerLine; + __u32 dwFrameInterval[]; +} __attribute__((__packed__)); + +#define UVC_DT_FRAME_H264_SIZE(n) (26+4*(n)) +#define UVC_DT_FRAME_FRAMEBASED_SIZE(n) (26+4*(n)) + +#define UVC_FRAME_H264(n) \ + uvc_frame_h264_##n + +#define DECLARE_UVC_FRAME_H264(n) \ +struct UVC_FRAME_H264(n) { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubType; \ + __u8 bFrameIndex; \ + __u8 bmCapabilities; \ + __u16 wWidth; \ + __u16 wHeight; \ + __u32 dwMinBitRate; \ + __u32 dwMaxBitRate; \ + __u32 dwDefaultFrameInterval; \ + __u8 bNumFrameIntervals; \ + __u32 dwBytesPerLine; \ + __u32 dwFrameInterval[n]; \ +} __attribute__ ((packed)) + #endif /* __LINUX_USB_VIDEO_H */